National Library of Energy BETA

Sample records for davis cu csm

  1. CSM: Earth, Energy, Environment 2013 Annual Faculty

    E-Print Network [OSTI]

    CSM: Earth, Energy, Environment 2013 Annual Faculty Conference Campus Update Terry Parker, Provost August 19, 2013 #12;CSM: Earth, Energy, Environment In Previous Years, we have discussed: · Campus budget on space overall and space location · Accreditation #12;CSM: Earth, Energy, Environment For this year, we

  2. Rachel Davis

    E-Print Network [OSTI]

    Phone: (765) 494-1423. Dept. Fax: (765) 494-0548. Office: 626 Mathematical Sciences Building. Email: davis705@math.purdue.edu. US Mail: Department of ...

  3. Sample.tex for the CSM Style File csm.sty A convenient template for typesetting

    E-Print Network [OSTI]

    ]. The latest version, as of t* *his document, is version V1.6b. Use the csm.sty [4] package file not have a caption or label along the top.* * The axes are labeled, and a legend is allowed if needed

  4. CSM GRADUATE HOURLY GRADUATE ASSISTANT AGREEMENT Student's Name

    E-Print Network [OSTI]

    #Term_of_Appointment. Contracts written for partial semesters are set up accordingly. Late contracts are set up for payment. This appointment may be terminated by either party at any time for any reason. In the event of such termination and effective on the termination date, CSM will cease stipend payments for services not yet rendered. Any

  5. CSM GRADUATE RESEARCH AND TEACHING ASSISTANT AGREEMENT Student's Name

    E-Print Network [OSTI]

    written for partial semesters are set up accordingly. Late contracts are set up for payment on the next. This appointment may be terminated by either party at any time for any reason. In the event of such termination and effective on the termination date, CSM will cease stipend payments for services not yet rendered. Any

  6. Cu

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit theCovalent Bonding in ActinideRail between PADCrystalDouglasApplications |Cu

  7. W. M. Davis Scientific Programmer

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    ;June 5, 2007 Bill Davis, PPPL 2 Overview Introduce NSTX Introduce EPICS & MDSplus The Event-Summation System Side Benefits (EPICS Pages) Future Plans #12;June 5, 2007 Bill Davis, PPPL 3 NSTX Spherical 53 institutions #12;June 5, 2007 Bill Davis, PPPL 4 NSTX #12;June 5, 2007 Bill Davis, PPPL 5 EPICS

  8. Technology Support Bob Davis

    E-Print Network [OSTI]

    Technology Support Services · Bob Davis · Associate Director User Support Services 1 #12;Technology Support Services · NUIT Technology Support Services (TSS) helps Northwestern faculty, staff, and students Technologies · Brian Nielsen · Project Manager Faculty Initiatives 8 #12;Support for Teaching & Learning

  9. Memorandum WM 0001 Evaluation of WAQUA/CSM8 A concise evaluation of water level

    E-Print Network [OSTI]

    Vries, Hans de

    developments, facilitates maintenance, and removes some problems which exist in the software which was used. The new dcsm­98 is envisaged to replace dcsm­96 as the operational model later in the year 2000. 2 Method 2.1 Statistics The comparison of waqua/csm­16 and waqua/csm­8 has been carried out along the lines

  10. Low velocity impact of inclined CSM composite laminates

    SciTech Connect (OSTI)

    Arnold, W.S.; Madjidi, S.; Marshall, I.H.; Robb, M.D.

    1993-12-31

    The damage tolerance of composite laminates subject to low velocity impact is an important aspect of current design philosophies required to ensure the integrity of primary load bearing structures. To the authors knowledge, no work published in the open literature has addressed the damage tolerance of composites subject to impacts at non-perpendicular inclinations, which in practical situations is the most common form of impact. This paper describes an experimental study, devised to assess the influence of inclined impact on the residual strength characteristics of CSM laminates. Preliminary experimental results and comparisons with previous work on flat plate impact tests are presented. The influence of the degree of inclination and impact energy are correlated with the laminates damage area and residual tensile properties.

  11. UC DAVIS: VICE CHANCELLOR ADMINISTRATIVE AND RESOURCE

    E-Print Network [OSTI]

    California at Davis, University of

    & Community Development - CAES Direct Charges 04-00134 202 Cousteau Ste 110, Davis 2,473 Davis Psychology Central Campus 06-00007 202 Cousteau Ste 175, Davis 2,482 Davis Human & Community Development - CAES

  12. "Toward bioengineering translation" , UC Davis

    E-Print Network [OSTI]

    Psarrakos, Panayiotis

    "Toward bioengineering translation" . , UC Davis , 6 , 1, ( , parking Engineering at the University of California Davis. He obtained his PhD in Bioengineering (Mechanical the translation of devices and instruments into clinical use and commercialization. #12;Toward bioengineering

  13. PLASMA PHYSICS PPPL UC Davis

    E-Print Network [OSTI]

    PRINCETON PLASMA PHYSICS LABORATORY PPPL UC Davis PRINCETON PLASMA PHYSICS LABORATORY PPPL UC Davis Scattering System for ETG physics on NSTX H. Park, E. Mazzucato, and D. Smith PPPL, Princeton University C, 2006 Hyatt Regency, Dallas, TX #12;PRINCETON PLASMA PHYSICS LABORATORY PPPL UC Davis PRINCETON PLASMA

  14. Ohio Nuclear Profile - Davis Besse

    U.S. Energy Information Administration (EIA) Indexed Site

    Davis Besse" "Unit","Summer Capacity (MW)","Net Generation (Thousand MWh)","Summer Capacity Factor (Percent)","Type","Commercial Operation Date","License Expiration Date"...

  15. Invasion Biology Mark A. Davis

    E-Print Network [OSTI]

    Davis, Mark A.

    Invasion Biology Mark A. Davis 2 biology 2 MarkA.DavisInvasionBiology2 1 With the exception of climate change, biological invasions have probably received more attention during the past ten years than on the subject, Invasion Biology provides a comprehensive and up-to-date review of the science of biological

  16. ITS-Davis Biennial Report 2008

    E-Print Network [OSTI]

    Sperling, Dan

    2009-01-01

    architecture, explored Scotland, Germany, Denmark, and Sweden. Handy, who directs the UC Davis Sustainable

  17. Friday, October 21 UC Davis Conference Center

    E-Print Network [OSTI]

    Ishida, Yuko

    through wine, brewing and food sciences UC Davis Department of Entomology Entomology.ucdavis.edu Event

  18. Recycle Batteries CSM recycles a variety of battery types including automotive, sealed lead acid, nickel

    E-Print Network [OSTI]

    Recycle Batteries CSM recycles a variety of battery types including automotive, sealed lead acid, and alkaline batteries. All batteries need to be sorted by battery type. Each battery type must be accumulated in a clearly labeled receptacle to identify the acceptable battery type. Batteries can be dropped off

  19. CSM Trailhead Channel Development Policy page 1 of 1 Colorado School of Mines Trailhead

    E-Print Network [OSTI]

    . The portal is designed to support Channels delivered from a developer's web server, which may be a departmental server or the central CSM web server. Channels typically will not be placed on the portal server, but will be referenced by the URL to the developer's web server. Channels may be developed using any traditional web

  20. Colorado School of Mines 1 General CSM Minor/ASI requirements can be

    E-Print Network [OSTI]

    Colorado School of Mines 1 Energy General CSM Minor/ASI requirements can be found here (bulletin.mines.edu/undergraduate/ undergraduateinformation/minorasi). http://energyminor.mines.edu Programs Offered · Minor in Energy · Area of Special Interest in Energy Program Educational Objectives The discovery, production, and use of energy in modern

  1. Davis-Besse uncertainty study

    SciTech Connect (OSTI)

    Davis, C B

    1987-08-01

    The uncertainties of calculations of loss-of-feedwater transients at Davis-Besse Unit 1 were determined to address concerns of the US Nuclear Regulatory Commission relative to the effectiveness of feed and bleed cooling. Davis-Besse Unit 1 is a pressurized water reactor of the raised-loop Babcock and Wilcox design. A detailed, quality-assured RELAP5/MOD2 model of Davis-Besse was developed at the Idaho National Engineering Laboratory. The model was used to perform an analysis of the loss-of-feedwater transient that occurred at Davis-Besse on June 9, 1985. A loss-of-feedwater transient followed by feed and bleed cooling was also calculated. The evaluation of uncertainty was based on the comparisons of calculations and data, comparisons of different calculations of the same transient, sensitivity calculations, and the propagation of the estimated uncertainty in initial and boundary conditions to the final calculated results.

  2. Colorado School of Mines Personal Home Page Policy Creation of a personal web page on CSM servers and publication of web pages through the campus network is a

    E-Print Network [OSTI]

    Colorado School of Mines Personal Home Page Policy Creation of a personal web page on CSM servers and publication of web pages through the campus network is a privilege that requires adherence to CSM computer usage policies. As a condition of publishing web pages via any CSM computing or network resource, we may

  3. PS-wave moveout inversion for tilted TI media: A physical-modeling study Pawan Dewangan and Ilya Tsvankin , Center for Wave Phenomena, Colorado School of Mines (CSM),

    E-Print Network [OSTI]

    PS-wave moveout inversion for tilted TI media: A physical-modeling study Pawan Dewangan and Ilya Tsvankin , Center for Wave Phenomena, Colorado School of Mines (CSM), Mike Batzle, Center for Rock Abuse, CSM, Kasper van Wijk, Physical Acoustics Laboratory, CSM, and Matt Haney, Center for Wave Phenomena

  4. QER- Comment of Brenda Davies

    Broader source: Energy.gov [DOE]

    To Whom it May Concern, we are seeking fix-it-first, reduce demand, and clean energy future is the kind of energy infrastructure Massachusetts wants and needs. Not fracking, we won't allow it! -- Brenda K Davies, OTR/L Outdoor Access Providing recreation for all! YES WE CAN!!

  5. World Malaria Day at UC Davis: Current research in vector biology and genetics at UC Davis

    E-Print Network [OSTI]

    Ishida, Yuko

    World Malaria Day at UC Davis: Current research in vector biology and genetics at UC Davis When-borne diseases in the world. Worldwide programs continue to rely on control programs based on the most recent

  6. Superconductors described with CSM.(a new paper, 2008-10-16)

    E-Print Network [OSTI]

    Tian De Cao

    2008-10-16

    The properties of the known superconductors can be explained with the correlations dominated superconducting mechanism (CSM). The correlations have the spin correlation, the charge correlation and the spin-charge correlation, and their strengths can be described by the related correlation lengths in their correlation functions. Our evaluation from many superconductors is that superconductivities occur if both the spin correlation and the charge correlation are stronger, and the calculation of a Hubbard model showed that the spin-charge correlation may govern superconductivities1. Afterwards, this mechanism has led a model which includes various superconductivities and magnetisms, and the relation between superconductivities and magnetisms can be understood on this model2 (these results have been shown by calculations). This mechanism is very practical, for example, to turn a material into a superconductor or increase the Tc of a superconductor, what we will do is to increase the spin-charge correlation. In this letter, we first describe the relations between the spin-charge correlation, the spin correlation and the charge correlation, take these relations as the basis of constructing a new phase diagram, and then classify the known superconductors into various sections in this phase diagram. This letter also gives a new explanation about the pressure effect on Tc, the isotope effect on Tc and the pairing symmetry with the CSM.

  7. On type IIn/Ia-CSM supernovae as exemplified by SN 2012ca

    E-Print Network [OSTI]

    Inserra, C; Smartt, S J; Benetti, S; Chen, T -W; Childress, M; Gal-Yam, A; Howell, D A; Kangas, T; Pignata, G; Polshaw, J; Sullivan, M; Smith, K W; Valenti, S; Young, D R; Parker, S; Seccull, T; McCrum, M

    2015-01-01

    We present the complete set of ultra-violet, optical and near-infrared photometry and spectroscopy for SN 2012ca, covering the period from 6 days prior to maximum light, until 531 days after maximum. The spectroscopic time series for SN 2012ca is essentially unchanged over 1.5 years, and appear to be dominated at all epochs by signatures of interaction with a dense circumstellar medium rather than the underlying supernova (SN). SN 2012ca is a member of the class of type Ia-CSM/IIn SNe, the nature of which have been debated extensively in the literature. The two leading scenarios are either a type Ia SN exploding within a dense CSM from a non-degenerate, evolved companion, or a core-collapse SN from a massive star. While some members of the class have been unequivocally associated with type Ia SNe, in other cases the association is less certain. While it is possible that Sn 2012ca does arise from a thermonuclear SN, this would require a relatively high (between 20 and 70 per cent) efficiency in converting kine...

  8. ITS-Davis Biennial Report 2008

    E-Print Network [OSTI]

    Sperling, Dan

    2009-01-01

    and Environmental Engineering and Environmental Science andenology, civil and environmental engineering, and economics.of civil and environmental engineering, the ITS-Davis

  9. TAP Webinar: Davis-Bacon Act Compliance

    Office of Energy Efficiency and Renewable Energy (EERE)

    This webinar, held on Nov. 18, 2014, offered information for Energy Department grantees, sub-grantees, and their contractors on complying with Davis-Bacon Act requirements.

  10. The Davis-Bacon Act: Vestige of Jim Crow

    E-Print Network [OSTI]

    Bernstein, David

    1994-01-01

    ironic, given that Davis-Bacon has par- ticularly harshoppo- sition of local activist to Davis-Bacon Act).a tenuous one." '4 7 The Davis-Bacon Act was soon to further

  11. The Revolution Revised: A Guided Tour of Davis v. Washington

    E-Print Network [OSTI]

    Graham, Kenneth

    2006-01-01

    for Petitoner, Davis v. Washington, No. 05-5524, Dec. 22,WL 3597706, p. 15. Davis v. Washington, No. 05-5224, Oralfor Respondent, Davis v. Washington, No. 05-5524, Feb. 2,

  12. EA-1982: Parker-Davis Transmission System Routine Operation and...

    Energy Savers [EERE]

    Parker-Davis Transmission System Routine Operation and Maintenance Project and Proposed Integrated Vegetation Management Program EA-1982: Parker-Davis Transmission System Routine...

  13. Gary Davis | Department of Energy

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would likeUniverse (Journal Article)ForthcomingGENERALProblems I n Q uasi---Elas2cDavis About Us

  14. Davis Bacon | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: Alternative Fuels DataEnergy Webinar:IAbout Us| DepartmentFunds RecipientsDavid M. KlausDavis

  15. World Malaria Day at UC Davis: Research in vector

    E-Print Network [OSTI]

    Ishida, Yuko

    World Malaria Day at UC Davis: Research in vector biology and genetics at UC Davis 25 April 2012 Davis, Davis, CA Purpose: In recognition of World Malaria Day and in support of the Roll Back Malaria:54-4:00pm Concluding Remarks Schedule World Malaria

  16. World Malaria Day at UC Davis: Current research in

    E-Print Network [OSTI]

    Ishida, Yuko

    World Malaria Day at UC Davis: Current research in vector biology and genetics at UC Davis 25 April-borne diseases in the world. Worldwide programs continue to rely on control programs based on the most recent remarks UC Davis World Malaria Day at UC Davis: Current research in vector biology and genetics at UC

  17. Urban Land Use and Transportation Center University of California, Davis

    E-Print Network [OSTI]

    California at Davis, University of

    Urban Land Use and Transportation Center University of California, Davis The Urban Land Use and Transportation Center (ULTRANS) at the UC Davis Institute of Transportation Studies (ITS-Davis) is tackling-Davis researchers have provided strong input to the design and analysis of the entire array of California's proposed

  18. Recent Agricultural Ergonomics Research at UC Davis

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    Davis, Berkeley and San Francisco · Focus on labor-intensive agriculture Agricultural Ergonomics effects of prolonged exposure to musculoskeletal disorders risk factors- Manual weeding Focus on basic exposure to musculoskeletal disorders risk factors- Manual weeding Recent Research Projects Fatigue

  19. ITS-Davis Biennial Report 2008

    E-Print Network [OSTI]

    Sperling, Dan

    2009-01-01

    for Energy and Transportation brings China and CaliforniaCalifornia Presented by ITS-Davis The 11th Biennial Conference on Transportation and Energyalong California Highway 99. Future Transportation Energy:

  20. SEMI-ANNUAL DAVIS-BACON ENFORCEMENT REPORT | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    SEMI-ANNUAL DAVIS-BACON ENFORCEMENT REPORT SEMI-ANNUAL DAVIS-BACON ENFORCEMENT REPORT Semi-Annual Davis-Bacon Enforcement Report. Please submit the Semi-Annual Davis-Bacon...

  1. SEMI-ANNUAL DAVIS-BACON ENFORCEMENT REPORT

    Office of Environmental Management (EM)

    SEMI-ANNUAL DAVIS-BACON ENFORCEMENT REPORT Please submit the Semi-Annual Davis-Bacon Enforcement Report in the Performance and Accountability for Grants in Energy (PAGE) system. If...

  2. Fifty years of bicycle policy in Davis, CA Ted Buehler

    E-Print Network [OSTI]

    Handy, Susan L.

    Fifty years of bicycle policy in Davis, CA Ted Buehler Institute of Transportation Studies-752-5878 slhandy@ucdavis.edu Please Submit to the Committee of Bicycle Transportation: ANF20 Word Count: 5378 Number of figures: 6 #12;Buehler and Handy 2 Fifty Years of Bicycle Psolicy in Davis, CA ABSTRACT Davis

  3. RetroSkeleton: Retrofitting Android Apps Benjamin Davis

    E-Print Network [OSTI]

    Chen, Hao

    RetroSkeleton: Retrofitting Android Apps Benjamin Davis University of California, Davis bendavis@ucdavis.edu Hao Chen University of California, Davis chen@ucdavis.edu ABSTRACT An obvious asset of the Android platform. We can leverage the rela- tively uniform nature of Android apps to allow users to tweak appli

  4. Light-travel-time diagnostics in early Supernova spectra: substantial mass loss of the IIb progenitor of SN 2013cu through a superwind

    E-Print Network [OSTI]

    Gräfener, G

    2015-01-01

    The progenitors of type-IIb supernovae (SNe) are believed to have lost their H-rich envelopes almost completely in the direct pre-SN phase. Recently the first 'flash spectrum' of a SN IIb (SN2013cu) has been presented, taken early enough to study its immediate circumstellar medium (CSM). Similar to a previous study by Groh (2014) we analyse the structure and chemical composition of the optically-thick CSM using non-LTE model atmospheres. For the first time we take light-travel time (LTT) effects on the spectrum formation into account, which affect the shapes and strengths of the observable emission lines, as well as the inferred SN luminosity. Based on the new CSM parameters we estimate a lower limit of ~0.3Msun for the CSM mass, which is a factor 10-100 higher than previous estimates. The spectral fit implies a CSM in the form of a homogeneous and spherically symmetric superwind whose mass-loss rate exceeds common expectations by up to two orders of magnitude. The derived chemical composition is in agreement...

  5. INDELIBLY DAVIS:  A Quarter-Century of UC Davis Stories...and Backstories

    E-Print Network [OSTI]

    Vanderhoef, Larry N

    2015-01-01

    in Division I-A [now the Football Bowl Subdivision] withmembership in Division I-AA [now the Football Champi- onshipUC Davis 28-21 in the first football game played at Aggie

  6. City of Davis City Manager's Office 23 Russell Boulevard, Suite 1 Davis, California 95616

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    September 17, 2014 The portion of the Putah Creek Parkway Bike Path between West Olive Drive and the tunnel of GATEways Horticulture, UC Davis Arboretum and Public Garden, ebgriswold@ucdavis.edu (530) 754-8038 Anne

  7. Mary Ellen Davis Lisa Janicke Hinchliffe

    E-Print Network [OSTI]

    Oakleaf, Megan

    Value of Academic Libraries Mary Ellen Davis Lisa Janicke Hinchliffe Megan Oakleaf ACRL Conference 2011 #12;what do we mean by value? Value Use Return-on- Investment Commodity Library Impact Competing Alternatives #12;What's the Evidence? #12;The Value of Academic Libraries: An ACRL Initiative · Align libraries

  8. TAP Webinar: Davis-Bacon Act Compliance

    Broader source: Energy.gov [DOE]

    This TAP webinar held on Nov. 18, 2014 from 1:00 p.m. - 3:00 p.m. Eastern Standard Time. It will offer information for Energy Department grantees, sub-grantees, and their contractors on complying with Davis-Bacon Act requirements.

  9. Kidney Transplantation at UC Davis Current Status

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    Alnimri, B Gallay, C Troppmann Univ of California Davis Med Center World Transplant Congress 2014 #12 from acute stress/injury · Kidney allografts will grow with time #12;#12;Standard pediatric en bloc.2% Imports 100% Cold ischemia (hrs) 23.1 13.6 ­ 30.5 Pulsatile Machine Perfusion 100% Final Pump Flow (ml

  10. Davis PV plant operation and maintenance manual

    SciTech Connect (OSTI)

    1994-09-01

    This operation and maintenance manual contains the information necessary to run the Photovoltaics for Utility Scale Applications (PVUSA) test facility in Davis, California. References to more specific information available in drawings, data sheets, files, or vendor manuals are included. The PVUSA is a national cooperative research and demonstration program formed in 1987 to assess the potential of utility scale photovoltaic systems.

  11. Isotopic Survey of Lake Davis and the Local Groundwater

    SciTech Connect (OSTI)

    Ridley, M N; Moran, J E; Singleton, M J

    2007-08-21

    In September 2007, California Fish and Game (CAFG) plans to eradicate the northern pike from Lake Davis. As a result of the eradication treatment, local residents have concerns that the treatment might impact the local groundwater quality. To address the concerns of the residents, Lawrence Livermore National Laboratory (LLNL) recommended measuring the naturally occurring stable oxygen isotopes in local groundwater wells, Lake Davis, and the Lake Davis tributaries. The purpose of these measurements is to determine if the source of the local groundwater is either rain/snowmelt, Lake Davis/Big Grizzly Creek water or a mixture of Lake Davis/Big Grizzly Creek and rain/snowmelt. As a result of natural evaporation, Lake Davis and the water flowing into Big Grizzly Creek are naturally enriched in {sup 18}oxygen ({sup 18}O), and if a source of a well's water is Lake Davis or Big Grizzly Creek, the well water will contain a much higher concentration of {sup 18}O. This survey will allow for the identification of groundwater wells whose water source is Lake Davis or Big Grizzly Creek. The results of this survey will be useful in the development of a water-quality monitoring program for the upcoming Lake Davis treatment. LLNL analyzed 167 groundwater wells (Table 1), 12 monthly samples from Lake Davis (Table 2), 3 samples from Lake Davis tributaries (Table 2), and 8 Big Grizzly Creek samples (Table 2). Of the 167 groundwater wells sampled and analyzed, only 2 wells contained a significant component of evaporated water, with an isotope composition similar to Lake Davis water. The other 163 groundwater wells have isotope compositions which indicate that their water source is rain/snowmelt.

  12. UC Davis Health System -Computer Workstation Self Evaluation Assessment Date: ______________

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    UC Davis Health System - Computer Workstation Self Evaluation Assessment Date Ergonomics Program at 734-6180 #12;UCDHS ERGONOMICS PROGRAM Adjusting your Computer Workstation to Fit

  13. The UC Davis Emerging Lithium Battery Test Project

    E-Print Network [OSTI]

    Burke, Andy; Miller, Marshall

    2009-01-01

    The UC Davis Emerging Lithium Battery Test Project Andrewto evaluate emerging lithium battery technologies for plug-vehicles. By emerging lithium battery chemistries were meant

  14. Raymond Davis Jr., Solar Neutrinos, and the Solar Neutrino Problems

    Office of Scientific and Technical Information (OSTI)

    discrepancy. While at Brookhaven, Ray Davis conducted research and experiments in solar neutrinos at Homestake Gold Mine in South Dakota. This research was funded by the...

  15. Semi-Annual Davis-Bacon Act Enforcement Report Form Guidance...

    Energy Savers [EERE]

    Semi-Annual Davis-Bacon Act Enforcement Report Form Guidance Semi-Annual Davis-Bacon Act Enforcement Report Form Guidance Semi-Annual Davis-Bacon Act Enforcement Report Form...

  16. Davis Water Consumption Efficiency Link, Phung, Purewal, Purewal, Salmon ESM 121 Water Science and Management

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    Davis Water Consumption Efficiency Link, Phung, Purewal, Purewal, Salmon ESM 121 Water Science and Management Water Consumption Efficiency of Toilets & Shower Heads in Davis: Old Davis Purewal, Kiernan Salmon Abstract The efficiency of household water consumption varies with the age

  17. DAVIS-BACON ACT WAGE RATES FOR ARRA-FUNDED ENERGY EFFICIENCY...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DAVIS-BACON ACT WAGE RATES FOR ARRA-FUNDED ENERGY EFFICIENCY AND CONSERVATION BLOCK GRANT (EECBG) PROGRAM PROJECTS INCLUDING RESIDENTIAL WEATHERIZATION WORK DAVIS-BACON ACT WAGE...

  18. FINITE K(ss, 1)'S FOR ARTIN GROUPS Ruth Charney(*)and Michael W. Davis(*)

    E-Print Network [OSTI]

    Charney, Ruth

    (*)and Michael W. Davis(*) To Bill Browder for his sixtieth birthday 1 #12;2 RUTH CHARNEY AND MICHAEL W. DAVIS convex, open set I (the interior

  19. University of California Davis | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page| Open Energy Information Serbia-EnhancingEt Al.,Turin, New York:Power Company JumpGeoPower JumpCalifornia Davis Jump

  20. Davis Energy Group | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower VenturesInformation9) WindGrid Project)Area (1982)DatabusDavis

  1. Davis Energy Group | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower VenturesInformation9) WindGrid Project)Area (1982)DatabusDavis

  2. Davis Graham Stubbs LLP | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIX ECoopButtePower VenturesInformation9) WindGrid Project)Area (1982)DatabusDavisGraham

  3. Kim Davis Lebak | National Nuclear Security Administration

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformationJesse Bergkamp Graduate student Subtask 4Photo4> TheKevinKim Davis Lebak |

  4. Net-Zero Campus at University of California, Davis

    Office of Energy Efficiency and Renewable Energy (EERE)

    With the help of $2.5 million in U.S. Department of Energy (DOE) funding, the University of California, Davis (UC Davis) built a net-zero community on its 130-acre West Village campus that provides housing for approximately 3,000 people in 662 apartments and 343 single-family homes.

  5. Student Handbook UC Davis Master of Public Health

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    Student Handbook UC Davis Master of Public Health Degree Program 2014-2015 Academic Year Last . . . . . . . . 6 Learning Objectives . . . . . . . . . . 7 MPH Core Competencies . . . . . . . . . 7 Public Health;3 Welcometo the UC Davis Master of Public Health Program. I congratulate you on joining a new generation

  6. University of California, Davis Office of the University Registrar

    E-Print Network [OSTI]

    Ishida, Yuko

    University of California, Davis Office of the University Registrar Diploma Mailing Form One Shields Avenue, 12 Mrak Hall, Davis, CA 95616-8692 | Office: 530-752-3639 | Fax: 530-752-6906 Diploma diploma will be held until your bill is paid. For more information about your hold, contact Student

  7. University of California, Davis Office of the University Registrar

    E-Print Network [OSTI]

    Ishida, Yuko

    University of California, Davis Office of the University Registrar Petition for Credit by Examination One Shields Avenue, 12 Mrak Hall, Davis, CA 95616-8692 | Office: 530-752-3639 | Fax: 530 at the Cashier's Office or bill your account at the Office of the University Registrar. · The Office

  8. Analysis of City of Davis 2010 Urban Water Management Plan

    E-Print Network [OSTI]

    Pasternack, Gregory B.

    Analysis of City of Davis 2010 Urban Water Management Plan Jessica Collado, Junyan Li, Vicki Lin Abstract With a growing population, the water demand in the city of Davis will increase, further depleting its aquifer. In order to prevent groundwater overdrafting, which can lead to degrading water quality

  9. UC Davis School of Medicine Match Results -2013

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    Medicine SACRAMENTO CA UC Davis Med Ctr-CA Emergency Medicine SACRAMENTO CA UC Davis Med Ctr-CA Emergency Medicine SACRAMENTO CA UC San Francisco-CA Emergency Medicine SAN FRANCISCO CA Sutter Health-CA Family Med/Sacramento SACRAMENTO CA Swedish Medical Center-WA Family Med/SeaMar SEATTLE WA Arrowhead Reg Med Ctr-CA Family Medicine

  10. Backups Using Storage Clusters! Joshua T. A. Davies ...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Backups Using Storage Clusters Joshua T. A. Davies Garrett W. Ransom Nicole M. Shaw Mentors: David Kennel, Sonny Rosemond, Cindy Valdez, Timothy Hemphill (DCS-CSD) LA-UR-14-26017...

  11. West Virginia University 1 Davis College of Agriculture, Natural Resources,

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    of our soils, water, forests, wildlife, domestic animals, food, fiber, and living spaces. The Davis and Environmental Microbiology · Animal and Nutritional Sciences · Biochemistry · Environmental Protection · Landscape Architecture SCHOOL OF NATURAL RESOURCES · Agribusiness Management and Rural Development · Energy

  12. VBA-0083- In the Matter of S.R. Davis

    Broader source: Energy.gov [DOE]

    This Decision considers an Appeal of an Initial Agency Decision (IAD) issued on April 21, 2004, involving a complaint filed by S.R. Davis (also referred to as the Complainant) under the Department...

  13. University of California Davis Health Care System Nurse Practitioner

    E-Print Network [OSTI]

    Ferrara, Katherine W.

    University of California Davis Health Care System Nurse Practitioner JULIE JORGENSON MSN, RN, FNP, ANP, GNP TITLE: Nurse Practitioner II SPECIALTY: Comprehensive Epilepsy Program Neurology ADDRESS: UC INTERESTS: Pediatric and Adult Epilepsy EDUCATION: 1982 California State University Chico BSN Chico

  14. Updated 1-14 Ronald J. Davis, Jr.

    E-Print Network [OSTI]

    with industry, and programs for continuous improvement including Lean Six Sigma. In November of 2005 Mr. Davis for Installation Management, Army Management Staff College (2008); Lean Six Sigma Executive Green Belt (2007

  15. VBU-0083- In the Matter of S. R. Davis

    Broader source: Energy.gov [DOE]

    S. R. Davis, a former employee of Fluor Fernald, Inc. (Fluor), a Department of Energy (DOE) contractor, appeals the DOE Ohio Field Office’s (OFO) dismissal of the whistleblower complaint against...

  16. UTILIZATION DOBER, LIDSKY, CRAIG & ASSOCIATES, INC. * CRAIG, GAULDEN & DAVIS * SEAMON, WHITESIDE & ASSOCIATES, INC * MCCRACKEN & LOPEZ, P.A.

    E-Print Network [OSTI]

    Stuart, Steven J.

    SPACE UTILIZATION STUDY 2002 DOBER, LIDSKY, CRAIG & ASSOCIATES, INC. * CRAIG, GAULDEN & DAVIS 2002 SPACE UTILIZATION STUDY DOBER, LIDSKY, CRAIG & ASSOCIATES, INC. * CRAIG, GAULDEN & DAVIS * SEAMON CAMPUS SPACE UTILIZATION

  17. Davis-Bacon Act Wage Rates for ARRA-Funded State Energy Program...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Davis-Bacon Act Wage Rates for ARRA-Funded State Energy Program Projects Involving Residential Weatherization Work Davis-Bacon Act Wage Rates for ARRA-Funded State Energy Program...

  18. DAVIS-BACON ACT WAGE RATES FOR ARRA-FUNDED STATE ENERGY PROGRAM...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    DAVIS-BACON ACT WAGE RATES FOR ARRA-FUNDED STATE ENERGY PROGRAM (SEP) PROJECTS INCLUDING RESIDENTIAL WEATHERIZATION WORK DAVIS-BACON ACT WAGE RATES FOR ARRA-FUNDED STATE ENERGY...

  19. PAO Form 5/2001 1 REQUEST FOR DAVIS-BACON DETERMINATION

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    #12;PAO Form 5/2001 1 REQUEST FOR DAVIS-BACON DETERMINATION Princeton Plasma Physics Laboratory for Davis-Bacon Determination (1) TO: (2) Project Title: NSTX Upgrade Project No.: Date: 1/20/11 (3

  20. FINITE K( ; 1)'S FOR ARTIN GROUPS Ruth Charney ( ) and Michael W. Davis ( )

    E-Print Network [OSTI]

    Charney, Ruth

    FINITE K(#25;; 1)'S FOR ARTIN GROUPS Ruth Charney (#3;) and Michael W. Davis (#3;) To Bill Browder RUTH CHARNEY AND MICHAEL W. DAVIS convex, open set I (the interior of the \\Tits cone"). When W is #12

  1. UC Davis Medical Center Community Health Needs Assessment Implementation Plan Page 2 Introduction

    E-Print Network [OSTI]

    Ullrich, Paul

    , an 800-member physician's practice group and the Betty Irene Moore School of Nursing. UC Davis Medical Center has the region's only Level I pediatric and adult trauma centers; the UC Davis MIND Institute

  2. The Davis Bicycle Studies: Why Do I Bicycle But My Neighbor Doesn't?

    E-Print Network [OSTI]

    Handy, Susan L.

    2011-01-01

    Factors Associated with Bicycle Ownership and Use: A StudyHandy. 2008. “Fifty Years of Bicycle Policy in Davis, CA,”The Davis Bicycle Studies Why do I bicycle but my neighbor

  3. April 6, 2011 Gloria Alvarado Vice President, UC Davis Retirees' Association

    E-Print Network [OSTI]

    California at Davis, University of

    Assembly Katie Kolesar ­ Chair, UC Davis Graduate Student Association William Lacy ­ Vice Provost Chancellor, Human Health Sciences Bill Rains ­ President, UC Davis Emeriti Association Rahim Reed ­ AssociateApril 6, 2011 Gloria Alvarado ­ Vice President, UC Davis Retirees' Association Yena Bae ­ Vice

  4. 1996 Bruce Davis. Reprinted from GIS: A Visual Approach, p. 210 (OnWord Press). 1996 Bruce Davis. Reprinted from GIS: A Visual Approach, p. 214 (OnWord Press).

    E-Print Network [OSTI]

    Wright, Dawn Jeannine

    © 1996 Bruce Davis. Reprinted from GIS: A Visual Approach, p. 210 (OnWord Press). #12;© 1996 Bruce Davis. Reprinted from GIS: A Visual Approach, p. 214 (OnWord Press). #12;© 1996 Bruce Davis. Reprinted from GIS: A Visual Approach, p. 216 (OnWord Press). #12;© 1996 Bruce Davis. Reprinted from GIS

  5. University of California, Davis Electrical and Computer Engineering

    E-Print Network [OSTI]

    Kolner, Brian H.

    AGENDA University of California, Davis Electrical and Computer Engineering Industrial Affiliates, Physical Sciences, IBM Research, T.J. Watson Research Center In Quest of the "Next Switch": Prospects, Industrial Affiliates Committee 8:50 a.m. - 9:15 a.m. Chair's Report ECE Department Chair, Professor Richard

  6. Laser Frequency Stabilization with Optical Cavities Anya M. Davis

    E-Print Network [OSTI]

    Blinov, Boris

    Laser Frequency Stabilization with Optical Cavities Anya M. Davis Walla Walla University University Effective laser cooling requires the laser's frequency to be precise, with a frequency drift of no more than lasers for correcting frequency drift. In the University of Washington Quantum Computing with Trapped

  7. Student Affairs Supporting the Vision of UC Davis

    E-Print Network [OSTI]

    Ferrara, Katherine W.

    that promote student learning · To provide seamless systems that advance transitions and success · To foster programs focused on mentorship, leadership and career development. Students engaged in activities outsideStudent Affairs Supporting the Vision of UC Davis Annual Report, 2010-2011 #12;STUDENT AFFAIRS

  8. TERRORISM AND WAR (SAS 7) UC Davis; Spring, 2013

    E-Print Network [OSTI]

    Ishida, Yuko

    1 TERRORISM AND WAR (SAS 7) UC Davis; Spring, 2013 INSTRUCTORS OFFICE HOUR (VIRTUAL) Prof. James R to varying degrees in major conflicts around the world, issues of terrorism and war are heavily debated deeply about terrorism and war and question your assumptions. You will be asked to understand

  9. Transportation Stacy C. Davis Susan W. Diegel Robert G. Boundy

    E-Print Network [OSTI]

    Pennycook, Steve

    ;Transportation Energy Data Book Quick Facts Petroleum The U.S. produces 7.9 million barrels of petroleum per day TRANSPORTATION ENERGY DATA BOOK: EDITION 31 Stacy C. Davis Susan W. Diegel Oak Ridge National Laboratory Robert G. Boundy Roltek, Inc. July 2012 Transportation Energy Data Book: Edition 31 can be found on line at: cta

  10. UC Davis School of Medicine Match Results -2008

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    -CA Emergency Medicine SACRAMENTO CA UC Davis Med Ctr-CA Emergency Medicine SACRAMENTO CA Sutter Health-CA Family Med/Sacramento SACRAMENTO CA Contra Costa Reg Med Ctr-CA Family Medicine MARTINEZ CA Kaiser Perm-Woodland Hills-CA Family Medicine WOODLAND HILLS CA Methodist Hosp-Sacramento-CA Family Medicine SACRAMENTO CA

  11. University of California Davis Health Care System Nurse Practitioner

    E-Print Network [OSTI]

    Ferrara, Katherine W.

    -C TITLE: Nurse Practitioner II SPECIALTY: Adult Neurology, Deep brain stimulation program ADDRESS: UCUniversity of California Davis Health Care System Nurse Practitioner LAURA SPERRY MSN, RN, ANP Care System Nurse Practitioner LAURA SPERRY MSN, RN, ANP-C RECENT PUBLICATIONS: Zhang, L., & Sperry, L

  12. Fusion Energy Sciences Advisory Committee Dr. N. Anne Davies

    E-Print Network [OSTI]

    Sciences February 28, 2006 Fusion Energy Sciences Program Update www.ofes.fusion.doe.gov U.S. DepartmentFusion Energy Sciences Advisory Committee Dr. N. Anne Davies Associate Director for Fusion Energy of Energy's Office of Science #12;Fusion is part of SC's part of the American Competitiveness Initiative

  13. UC DAVIS SCHOOL OF MEDICINE THIRD YEAR ABSENCE POLICY

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    UC DAVIS SCHOOL OF MEDICINE THIRD YEAR ABSENCE POLICY In order to gain the knowledge and skills needed to successfully complete the third year, experiential learning is essential. This requires a student to maintain consistent participation and attendance throughout the third year. We recognize

  14. RICHARD A. DAVIS: CURRICULUM VITAE June 1, 2015

    E-Print Network [OSTI]

    Davis, Richard A.

    of International Statistics Institute, 1992 Koopmans Econometric Theory Prize for the period 1994­1996, inclusive Statistics. (Jan '13­present) Associate Editor, Communications for Statistical Applications and Methods. (Jan1 RICHARD A. DAVIS: CURRICULUM VITAE June 1, 2015 Address Department of Statistics Columbia

  15. Reply to Davies: Hydraulic fracturing remains a possible mechanism for

    E-Print Network [OSTI]

    Jackson, Robert B.

    LETTER Reply to Davies: Hydraulic fracturing remains a possible mechanism for observed methane mechanisms were leaky gas well casings and the possibility that hydraulic fracturing might generate new- knowledged the possibility of hydraulic fracturing playing a role. Is it possible that hydraulic fracturing

  16. GG671b Remote Sensing Planets Gillis-Davis

    E-Print Network [OSTI]

    GG671b Remote Sensing ­ Planets Gillis-Davis Wednesday 1:30-4:20 POST 544 Description: This course will teach end-to-end principles of remote sensing across electromagnetic spectrum with application state-of-the art remote sensing methods and basic concepts of how to use such data to derive information

  17. Health Happens at UC Davis: Promoting Student Academic Success

    E-Print Network [OSTI]

    Ishida, Yuko

    Health Happens at UC Davis: Promoting Student Academic Success Through a Sustainable Wellness Model and community health. Background and Need Today's undergraduate and graduate students face an increasing number of stressors, which has caused a steady increase in student requests for mental health services on university

  18. UC DAVIS PHYSICAL DESIGN FRAMEWORK PHYSICAL DESIGN FRAMEWORK

    E-Print Network [OSTI]

    Ullrich, Paul

    the criteria the campus will use to judge the success of proposed projects with regard to planning and designUC DAVIS PHYSICAL DESIGN FRAMEWORK PHYSICAL DESIGN FRAMEWORK 2008 /2009 #12;ACKNOWLEDGEMENTS, Environmental and Capital Planning Karl Mohr, Physical, Environmental and Capital Planning Joseph Perry, Safety

  19. Energize your career Find out how UC Davis Extension's

    E-Print Network [OSTI]

    California at Davis, University of

    gas purchasing opportunities in the spot market, thermal energy storage, alterna- tive energy supplies, energy security and energy trading. Explore reliability and risk analysis methods, financing projectsEnergize your career Find out how UC Davis Extension's convenient, online Energy Resource

  20. Tests with Sandia's Davis gun aid B61-12 life extension effort...

    National Nuclear Security Administration (NNSA)

    Tests with Sandia's Davis gun aid B61-12 life extension effort | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile...

  1. Davie County, North Carolina: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments Inc JumpIowa:Minnesota: Energy Resources Jump to:NorthDavie

  2. Raymond Davis Jr., Solar Neutrinos, and the Solar Neutrino Problems

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefield MunicipalTechnical Report:Speeding access toSmall ReactorRaymond Davis, Jr., Solar Neutrinos, and the

  3. MHK Projects/Davis Island Bend | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION J APPENDIXsource HistoryScenarios Towards 2050 JumpCoos Bay OPT Wave Park < MHKIslandDavis

  4. UC Davis Policy and Procedure Manual Chapter 290, Health and Safety Services

    E-Print Network [OSTI]

    Yoo, S. J. Ben

    UC Davis Policy and Procedure Manual Chapter 290, Health and Safety Services Section 65, Hazardous or injury caused by hazardous chemicals. Additional regulations for the UCD Medical Center are available maintained on UC Davis properties or in surrounding areas. 3. The environment. B. Emergencies involving

  5. Response to the UC Davis Academic Senate's Executive Council Request for an Action Plan

    E-Print Network [OSTI]

    California at Davis, University of

    Response to the UC Davis Academic Senate's Executive Council Request for an Action Plan January 18 ........................................12 II.10 Reynoso C-3: UCOP should review Police Officers Bill of Rights....................................................................................................13 Section III: Kroll Report Recommendations III.1 Kroll 8.1: UC Davis Leadership Team

  6. Group Name: University of California, Davis Medical Center Benefit Plan Name: Custom Plus Plan #10

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    Group Name: University of California, Davis Medical Center Benefit Plan Name: Custom Plus Plan #10. Page 1 of 2 #12;Group Name: University of California, Davis Medical Center Benefit Plan Name: Custom/PPO dentist cannot "balance bill" you for amounts greater than the contracted rate. How It Works Out

  7. Response to the UC Davis Academic Senate's Executive Council Request for an Action Plan

    E-Print Network [OSTI]

    California at Davis, University of

    Response to the UC Davis Academic Senate's Executive Council Request for an Action Plan May 1, 2013: UC Davis Police department should strive to be a model of policing...........14 II.8 Reynoso C-1 ........................................15 II.10 Reynoso C-3: UCOP should review Police Officers Bill of Rights

  8. Updated Response to the UC Davis Academic Senate's Executive Council Request for an Action Plan

    E-Print Network [OSTI]

    California at Davis, University of

    Updated Response to the UC Davis Academic Senate's Executive Council Request for an Action Plan ........................................22 II.10 Reynoso C-3: UCOP should review Police Officers Bill of Rights...................................................................................................................................22 Section III: Kroll Report Recommendations III.1 Kroll 8.1: UC Davis Leadership Team

  9. Response to the UC Davis Academic Senate's Executive Council Request for an Action Plan

    E-Print Network [OSTI]

    California at Davis, University of

    Response to the UC Davis Academic Senate's Executive Council Request for an Action Plan June 1 ........................................15 II.10 Reynoso C-3: UCOP should review Police Officers Bill of Rights...................................................................................................................................16 Section III: Kroll Report Recommendations III.1 Kroll 8.1: UC Davis Leadership Team

  10. UC DAVIS HEALTH SYSTEM EMPLOYEE GIVING PROGRAM PAYROLL DEDUCTION AUTHORIZATION/CANCELLATION

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    of Nursing Greatest Need (S-NRDN803) UC Davis Nurses' Endowed Scholarship (122752) UC Davis Nurses' Endowed Research Fund (122751) Nursing Science Student & Alumni Scholarship (14826) Cancer General Support (S-CC46530) Lung Cancer Research (S-CC48528) Ovarian Cancer Research (S-CC42867) Pediatric Cancer Fund

  11. The City College of New York Sophie Davis School of Biomedical Education

    E-Print Network [OSTI]

    Sun, Yi

    The City College of New York Sophie Davis School of Biomedical Education Physician Assistant #12;1 PREFACE The City College of New York Sophie Davis School of Biomedical Education Physician College of New York. The September 2014 edition of the handbook supplants any previous version

  12. The City College of New York Sophie Davis School of Biomedical Education

    E-Print Network [OSTI]

    Sun, Yi

    2 The City College of New York Sophie Davis School of Biomedical Education Physician Assistant #12;3 PREFACE The City College of New York Sophie Davis School of Biomedical Education Physician of New York. While this Handbook covers polices for the entire curriculum, there are more specific

  13. BCG Response to UC Davis Policy Institute on Energy, Environment and the Economy May 8, 2013

    E-Print Network [OSTI]

    California at Davis, University of

    BCG Response to UC Davis Policy Institute on Energy, Environment and the Economy May 8, 2013 We appreciate the work the US Davis Institute for Energy, Environment and the Economy put into its review of the Boston Consulting Group analysis of the cumulative impacts of AB 32 policies on California refiners

  14. [Vietnamese] Tiu Nghin cu

    E-Print Network [OSTI]

    Biederman, Irving

    . Nhn c mt bn sao có ch ký và ngày tháng ca t mu chp thun cho cuc nghiên cu ó. 10. C hi tùy ý chp thun

  15. An Agile Approach to the Doctoral Dissertation Process Amir Ataee, Sonnie Avenbuan, Marvin Billings, Sharice Cannady, Terrance Hamilton, LLiver Jose, Davis

    E-Print Network [OSTI]

    Tappert, Charles

    Billings, Sharice Cannady, Terrance Hamilton, LLiver Jose, Davis Mirilla, Mark Pisano, Michael Powell, Egal

  16. Quantum Linear Gravity in de Sitter Universe II: On Bunch-Davies vacuum state

    E-Print Network [OSTI]

    M. V. Takook; S. Rouhani

    2015-02-17

    In de Sitter ambient space formalism, the linear gravity can be written in terms of a minimally coupled scalar field and a polarization tensor. In this formalism, the minimally coupled massless scalar field can be quantized on Bunch-Davies vacuum state, that preserves the de Sitter invariant, the analyticity and removes the infrared divergence. The de Sitter quantum linear gravity is then constructed on Bunch-Davis vacuum state, which is also covariant, analytic and free of any infrared divergence. We conclude that the unique Bunch-Davies vacuum states can be used for construction of quantum field theory in de Sitter universe.

  17. A Laser Range Scanner Designed for Minimum Calibration Complexity James Davis, Xing Chen

    E-Print Network [OSTI]

    Stanford University

    A Laser Range Scanner Designed for Minimum Calibration Complexity James Davis, Xing Chen Computer Graphics Lab, Stanford University {jedavis, xcchen}@graphics.stanford.edu Abstract Laser range scanners reduce the costs associated with calibration. 1 Introduction Laser triangulation scanners

  18. The Effects of Migrant Remittances on Consumption in Highland Guatemala Jason Davis

    E-Print Network [OSTI]

    Lopez-Carr, David

    The Effects of Migrant Remittances on Consumption in Highland Guatemala Jason Davis DavidL. Carr This paper investigates the potential impact of migrant remittances on consumption in highland Guatemala

  19. Model-driven support for a vaccine study in Kathmandu Jim Davies, Jeremy Gibbons, Steve Harris,

    E-Print Network [OSTI]

    Oxford, University of

    Model-driven support for a vaccine study in Kathmandu Jim Davies, Jeremy Gibbons, Steve Harris Alliance for Vaccines and Immunisation), which is funded by five national governments and the Bill

  20. ALL DESIGN TECHNOLOGY LIVING TRANSPORTATION ENERGY SCIENCE BUSINESS PODCASTS Alex Davies

    E-Print Network [OSTI]

    Printing Can Do From hermit crab shells to moon bases, 3D printing may remake the world. by Lloyd Alter wave in tech, making gadgets greener along the way. by Alex Davies in Gadgets 19 Amazing Things 3D

  1. @FrankKlotzNNSA Welcome aboard Brig. Gen. Stephen L. Davis--an...

    National Nuclear Security Administration (NNSA)

    L. Davis--an outstanding leader to help guide our Stockpile Stewardship Program http:1.usa.gov1sDVbaG | National Nuclear Security Administration Facebook Twitter Youtube Flickr...

  2. A review of "Chivalry and Romance in the English Renaissance." by Alex Davis 

    E-Print Network [OSTI]

    Eugene D. Hill

    2004-01-01

    . Reading Cervantes? Don in this 10 SEVENTEENTH-CENTURY NEWS fashion, as ?an icon of historical discontinuity? (109), misconstrues that character, applying (Davis claims) eighteenth-century constructions of the distinctively medieval (and non.... Highlighting the fluidity of that flux is, in my view, a principal strength of this history. Alex Davis. Chivalry and Romance in the English Renaissance. Rochester: D. S. Brewer, 2003. viii + 263 pp. $85.00. Review by EUGENE D. HILL, MOUNT HOLYOKE COLLEGE...

  3. UC DAVIS CUPA SELF AUDIT CHECKLIST 1. Are chemical hazardous waste containers disposed of through Yes No NA

    E-Print Network [OSTI]

    Kolner, Brian H.

    UC DAVIS CUPA SELF AUDIT CHECKLIST 1. Are chemical hazardous waste containers disposed of through days if 1 pound or 1 quart of acutely hazardous waste is accumulated? (Prudent practice is to dispose of within 90 days). 2. Does each chemical hazardous waste container have a UC Davis Yes Ë No Ë NA Ë

  4. Full Spectrum Boost in Nanoparticle Solar Cells UC Davis/Theory: F.Gygi, M.Voros, GTZ

    E-Print Network [OSTI]

    designs are needed GaAs 29% Alta Devices HIT c-Si cell 26% Panasonic, SunPower Thin film CdTe 20Full Spectrum Boost in Nanoparticle Solar Cells UC Davis/Theory: F.Gygi, M.Voros, GTZ UC Davis% First Solar Organic solar cells 12% Sumitomo #12;Solar Energy Conversion: Basics 5 1. No absorption

  5. Bodega Marine Reserve --Current Research Projects 1 Jessica Abbott, UC Davis Characterization of how traits vary among eelgrass genotypes

    E-Print Network [OSTI]

    Ishida, Yuko

    Bodega Marine Reserve -- Current Research Projects 1 Jessica Abbott, UC Davis Characterization The ecological and evolutionary consequences of sibling competition in sessile marine invertebrates 3 Dr. Peter Network 14 Bodega Marine Laboratory, UC Davis Bodega Ocean Observing Node (BOON) 15 Bodega Marine Reserve

  6. Threadleaf Groundsel and Forage Response to Herbicides in the Davis Mountains. 

    E-Print Network [OSTI]

    Jones, R.D.; Ueckert, D.N.; Nelson J.T.; Cox, J.R.

    1982-01-01

    . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 9 KEYWORDS: Poisonous plan tslrange managemen t / threadleaf groundsel/woolly groundsel/woolly senecio/2 , 4D/dicam bal picloram/tebuthiuron/pelleted herbicides. Threadleaf Groundsel and Forage Response to Herbicides in the Davis Mountains R. D... and Igneous Hill and Moun tain range sites in the Davis Mountains. Tebuthiuron applied as sprays of wettable powder in water or pellets at 1.1 kglha during summer reduced threadleaf ground sel densities by 99 to 100 percent for almost 20 months after...

  7. Hydrodynamic evolution and jet energy loss in Cu + Cu collisions

    SciTech Connect (OSTI)

    Schenke, Bjoern; Jeon, Sangyong; Gale, Charles

    2011-04-15

    We present results from a hybrid description of Cu + Cu collisions using (3 + 1)-dimensional hydrodynamics (music) for the bulk evolution and a Monte Carlo simulation (martini) for the evolution of high-momentum partons in the hydrodynamical background. We explore the limits of this description by going to small system sizes and determine the dependence on different fractions of wounded nucleon and binary collisions scaling of the initial energy density. We find that Cu + Cu collisions are well described by the hybrid description at least up to 20% central collisions.

  8. Davis-Bacon Labor Rates for Weatherization Work in Multifamily Buildings

    Broader source: Energy.gov [DOE]

    U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Weatherization Assistance Program Notice 10-04 deals with labor rates (wages) for weatherization work in large multifamily buildings that comply with the Davis-Bacon Act requirements of the 2009 Recovery Act.

  9. UC Davis Policy and Procedure Manual Chapter 290, Health and Safety Services

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    UC Davis Policy and Procedure Manual Chapter 290, Health and Safety Services Section 16, Ergonomics/OSHA ergonomics standard and UC/Collective Bargaining Unit Agreements. C. The program will be incorporated are then evaluated to determine if intervention would be beneficial. E. The following criteria will be used

  10. Generalized Functional Linear Models Hans-Georg Muller (UC Davis) und U. Stadtmuller

    E-Print Network [OSTI]

    Ulm, Universität

    Generalized Functional Linear Models Hans-Georg M¨uller (UC Davis) und U. Stadtm¨uller Preprint FUNCTIONAL LINEAR MODELS Hans-Georg M¨uller1 and Ulrich Stadtm¨uller2 March 2004 1Department of Statistics. Wahrscheinlichkeitstheorie, Universit¨at Ulm, 89069 Ulm, Germany #12;ABSTRACT We propose a generalized functional linear

  11. Hadar Feinberg, Joost C.M.Uitdehaag1 Jason M.Davies, Russell Wallis1

    E-Print Network [OSTI]

    Hadar Feinberg, Joost C.M.Uitdehaag1 , Jason M.Davies, Russell Wallis1 , Kurt Drickamer1 and William I.Weis2 Departments of Structural Biology and of Molecular and Cellular Physiology, Stanford Corresponding author e-mail: bill.weis@stanford.edu H.Feinberg and J.C.M.Uitdehaag contributed equally

  12. UC Davis Research Supports Energy-Efficiency Improvements to California's Title 24 Codes

    E-Print Network [OSTI]

    California at Davis, University of

    efficiency of residential buildings by 25 percent and boosting energy savings in non-residential buildingsUC Davis Research Supports Energy-Efficiency Improvements to California's Title 24 Codes July 5, 2012 The California Energy Commission recently adopted more stringent energy efficiency requirements

  13. DDR2 and Low Latency Variants Brian Davis, Trevor Mudge Bruce Jacob, Vinodh Cuppu

    E-Print Network [OSTI]

    Mudge, Trevor

    DDR2 and Low Latency Variants Brian Davis, Trevor Mudge Bruce Jacob, Vinodh Cuppu Electrical describes a performance examination the DDR2 DRAM architecture and the proposed cache­enhanced variants. This Task Group responsible for developing DDR2 standard. The goal the Low Latency DRAM Working Group

  14. DDR2 and Low Latency Variants Brian Davis, Trevor Mudge Bruce Jacob, Vinodh Cuppu

    E-Print Network [OSTI]

    Davis, Brian T.

    1 DDR2 and Low Latency Variants Brian Davis, Trevor Mudge Bruce Jacob, Vinodh Cuppu Electrical describes a performance examination of the DDR2 DRAM architecture and the proposed cache-enhanced variants Task Group. This Task Group is responsible for developing the DDR2 standard. The goal of the Low

  15. UNIVERSITY OF CALIFORNIA, DAVIS ACADEMIC SENATE REQUEST TO TEACH AN UNDERGRADUATE VARIABLE-UNIT COURSE

    E-Print Network [OSTI]

    Ishida, Yuko

    UNIVERSITY OF CALIFORNIA, DAVIS ACADEMIC SENATE REQUEST TO TEACH AN UNDERGRADUATE VARIABLE-UNIT/Major Number Section Units Quarter Offered Year Estimated average student/faculty contact (hours for awarding a passing grade. Student Major Address Phone Email Student ID Total number of units completed

  16. Postdoctoral position -UC Davis -plant-vector interactions, plant-microbe interactions, molecular biology, ecology

    E-Print Network [OSTI]

    Ishida, Yuko

    Postdoctoral position - UC Davis - plant-vector interactions, plant-microbe interactions, molecular August 2014. The primary research goal of the Casteel lab is to identify the functions of microbes- microbe or plant-insect interactions will be preferred. Candidates with a proven record of excellence

  17. EA-1665: Davis-Kingman 69-kV Transmission Line Rebuild Project, Arizona

    Broader source: Energy.gov [DOE]

    Western plans to rebuild a 26.6-mile-long portion of the existing 27.3-mile-long Davis–Kingman Tap 69-kV Transmission Line within the existing ROW in order to improve the reliability of the transmission service.

  18. ACE Data from the ACE Science Center A.J. Davis

    E-Print Network [OSTI]

    Davis, Andrew J.

    SH.1.4.29 ACE Data from the ACE Science Center A.J. Davis½ , S.J. Hemple½ and S.R. Sears½ ½ ACE Data Center (NSSDC) for archiving. Generally, the data are less than 1 week old by this time Science Center, Caltech, MC 220-22, Pasadena, CA 91125, USA Abstract The purpose of the ACE Science Center

  19. Modeling the patterned two-dimensional electron gas: Electrostatics John H. Davies and Ivan A. Larkin

    E-Print Network [OSTI]

    Davies, John H.

    Modeling the patterned two-dimensional electron gas: Electrostatics John H. Davies and Ivan A. V. Sukhorukov Institute of Problems of Microelectronics Technology, Academy of Science of Russia, Chernogolovka, Moscow district, Russia, 142432 (Dated: February 21, 2005) Abstract We present analytical

  20. Web Interfaces to MDSplus Data* W. Davis, P. Roney, T. Carroll, T. Gibney, D. Mastrovito

    E-Print Network [OSTI]

    Princeton Plasma Physics Laboratory

    Web Interfaces to MDSplus Data* W. Davis, P. Roney, T. Carroll, T. Gibney, D. Mastrovito Princeton be run in a Web browser. Web users don't need to know about X-windows, or even have accounts accessible from a Web browser. These utilities could be used at other sites which keep data in MDSplus. I

  1. Drug delivery systems based on sugar-macromolecule conjugates Benjamin G Davis* & Mark A Robinson

    E-Print Network [OSTI]

    Davis, Ben G.

    Drug delivery systems based on sugar-macromolecule conjugates Benjamin G Davis* & Mark A Robinson in Drug Discovery & Development 2002 5(2): 279-288 PharmaPress Ltd ISSN 1367-6733 The specificity-tuning of active drug delivery through their great ability to undergo site- specific modification

  2. The Range of Traded Option Prices Mark H.A. Davis

    E-Print Network [OSTI]

    The Range of Traded Option Prices Mark H.A. Davis Imperial College London and David G. Hobson Suppose we are given a set of prices of European call options over a finite range of strike prices conditions for the prices to be consistent with an arbitrage- free model (in which case the model can

  3. UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence

    SciTech Connect (OSTI)

    Erickson, Paul

    2012-05-31

    This is the final report of the UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence which spanned from 2005-2012. The U.S. Department of Energy (DOE) established the Graduate Automotive Technology Education (GATE) Program, to provide a new generation of engineers and scientists with knowledge and skills to create advanced automotive technologies. The UC Davis Fuel Cell, Hydrogen, and Hybrid Vehicle (FCH2V) GATE Center of Excellence established in 2005 is focused on research, education, industrial collaboration and outreach within automotive technology. UC Davis has had two independent GATE centers with separate well-defined objectives and research programs from 1998. The Fuel Cell Center, administered by ITS-Davis, has focused on fuel cell technology. The Hybrid-Electric Vehicle Design Center (HEV Center), administered by the Department of Mechanical and Aeronautical Engineering, has focused on the development of plug-in hybrid technology using internal combustion engines. The merger of these two centers in 2005 has broadened the scope of research and lead to higher visibility of the activity. UC Davisâ??s existing GATE centers have become the campusâ??s research focal points on fuel cells and hybrid-electric vehicles, and the home for graduate students who are studying advanced automotive technologies. The centers have been highly successful in attracting, training, and placing top-notch students into fuel cell and hybrid programs in both industry and government.

  4. University of California, Davis China-U.S. ZEV Policy Lab

    E-Print Network [OSTI]

    California at Davis, University of

    University of California, Davis China-U.S. ZEV Policy Lab China Center For Energy and Transportation Yunshi Wang Director #12;Chinese New Energy Vehicle Development Status Data Source: 1 2 3IEA-Tianjin-Hebei work together, following California Experience · Beijing led New Energy Vehicle Development Supply

  5. "UUV FCEPS Technology Assessment and Design Process" Kevin L. Davies1

    E-Print Network [OSTI]

    Natural Energy Institute (HNEI), School of Ocean and Earth Science and Technology (SOEST) University on available UUV FCEPS technology, design methodology, and concepts. The report is limited to the Polymer"UUV FCEPS Technology Assessment and Design Process" Kevin L. Davies1 and Robert M. Moore Hawaii

  6. ER Membrane Protein Complex Required for Nuclear Fusion Davis T.W. Ng and Peter Walter

    E-Print Network [OSTI]

    Walter, Peter

    ER Membrane Protein Complex Required for Nuclear Fusion Davis T.W. Ng and Peter Walter Department is localized to the luminal (i.e., noncytoplasmic) face of the ER mem- brane, yet nuclear fusion must initiate of Sec63p, Sec71p, and Sec72p plays a central role in mediating nuclear mem- brane fusion and requires ER

  7. Rapid gravity and gravity gradiometry terrain correction via adaptive quadtree mesh discretization Kristofer Davis, M. Andy Kass, and Yaoguo Li, Center for Gravity, Electrical and Magnetic Studies, Colorado School

    E-Print Network [OSTI]

    Kristofer Davis, M. Andy Kass, and Yaoguo Li, Center for Gravity, Electrical and Magnetic Studies, Colorado

  8. Science DMZ Implemented at CU Boulder

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    CU Science Engagement Move your data Programs & Workshops Science Requirements Reviews Case Studies OSCARS Case Studies Science DMZ Case Studies Science DMZ @ UF Science DMZ @ CU...

  9. University of California Davis West Village: The Largest Planned Net Zero Energy Community in the United States

    Office of Energy Efficiency and Renewable Energy (EERE)

    U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Community Renewable Energy (CommRE) success stories UC Davis net zero energy community; energy efficiency in buildings; PV and photovoltaics.

  10. A dreamer and a painter : visualizing the unconscious in the work of Arthur B. Davies, 1890-1920

    E-Print Network [OSTI]

    Gephart, Emily Willard

    2014-01-01

    The paintings of U. S. artist Arthur B. Davies (1863-1928) spoke to his viewers in terms of the emergent discipline of psychology, creating visualizations of dreaming. This dissertation examines his work and its reception ...

  11. Mass of Cu-57 

    E-Print Network [OSTI]

    Gagliardi, Carl A.; Semon, D. R.; Tribble, Robert E.; Vanausdeln, L. A.

    1986-01-01

    at temperatures of T9 0.4?7 and 0.70 with the two hypotheses. In Fig. 3(b}, we show the calculated ratio of the Cu photodisintegration rate to its beta-decay rate as a function of temperature, again ac- cording to our two hypotheses. %hen this ratio is much... PROCEDURES AND RESULTS A 76.5 MeV Li + beam from the Texas A&M cyclo- tron irradiated a target consisting of 1-52 mg/cmz ss&i (99.98%%uo purity), backed by 1.10 mg/cm of Al. Outgoing ejectiles at 7.0 deg were detected with an Enge split...

  12. Revised Davis-Bacon Wage Determinations for the Weatherization Assistance Program

    Broader source: Energy.gov [DOE]

    U.S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) Weatherization Assistance Program Notice 10-07 deals with wage determinations for states and U.S. territories that were issued by the U.S. Department of Labor for a new category of wage earners for weatherization that grantees will use to comply with the Davis-Bacon Act requirements under the 2009 Recovery Act

  13. 1 University of California, Davis, Oct 1, 2015 Life Cycle Greenhouse Gas (GHG)

    E-Print Network [OSTI]

    California at Davis, University of

    32 32 37 23 43 44 48 44 45 43 47 48 45 48 48 Conv. diesel HEV Conventional diesel CNG LNG central CI LNG distributed CI LNG central SI F-T diesel w/ CCS LNG distributed SI Oil sand diesel F-T diesel w;10 University of California, Davis, Oct 1, 2015 LNG/CNG vs. Diesel (MHDVs) 80% 90% 100% 110% 120% 0% 1% 2% 3% 4

  14. Geological control of springs and seeps in the Farmington Canyon Complex, Davis County, Utah 

    E-Print Network [OSTI]

    Skelton, Robyn Kaye

    1991-01-01

    number of studies were done in the area, and it was concluded that there is a direct correlation between the debris-flow initiation points and discharging ground water. A hydrogeologic study of Davis County found that the discharge of ground water.... TABLE OF CONTENTS Page . . Vl Vill Physiography of the Wasatch Front. . . . . Regional Geology. . Hydrogeology METHODOLOGY Selection of Canyons. . . Field Mapping. Regional Geology. . RESULTS. Centerville Canyon . Parrish Canyon. . Ford...

  15. Environmental Survey preliminary report, Laboratory for Energy-Related Health Research, Davis, California

    SciTech Connect (OSTI)

    Not Available

    1988-03-01

    This report presents the preliminary findings from the first phase of the Survey of the United States Department of Energy (DOE) Laboratory for Energy-Related Health Research (LEHR) at the University of California, Davis (UC Davis), conducted November 16 through 20, 1987. The Survey is being conducted by an interdisciplinary team of environmental specialists, led and managed by the Office of Environment, Safety and Health's Office of Environmental Audit. Individual team components are being supplied by a private contractor. The objective of the Survey is to identify environmental problems and areas of environmental risk associated with the LEHR. The Survey covers all environmental media and all areas of environmental regulation, and is being performed in accordance with the DOE Environmental Survey Manual. This phase of the Survey involves the review of existing site environmental data, observations of the operations at the LEHR and interviews with site personnel. The Survey team developed a Sampling and Analysis Plan to assist in further assessing certain of the environmental problems identified during its on-site activities. The Sampling and Analysis Plan will be executed by a DOE National Laboratory or a support contractor. When completed, the results will be incorporated into the Environmental Survey Interim Report for the LEHR at UC Davis. The Interim Report will reflect the final determinations of the LEHR Survey. 75 refs., 26 figs., 23 tabs.

  16. UC Davis Models: Geospatial Station Network Design Tool and Hydrogen Infrastructure Rollout Economic Analysis Model

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:Financing ToolInternationalReport FY 2009, AnnualEnergy A.I.D. Higher Education SummitUC Davis

  17. Direct spectroscopic evidence for completely filled Cu 3d shell in BaCu?As? and ? – BaCu?Sb?

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wu, S. F.; Richard, P.; van Roekeghem, A.; Nie, S. M.; Miao, H.; Xu, N.; Qian, T.; Saparov, B.; Fang, Z.; Biermann, S.; et al

    2015-06-08

    We use angle-resolved photoemission spectroscopy to extract the band dispersion and the Fermi surface of BaCu?As? and ? - BaCu?Sb?. While the Cu 3d bands in both materials are located around 3.5 eV below the Fermi level, the low-energy photoemission intensity mainly comes from As 4p states, suggesting a completely filled Cu 3d shell. The splitting of the As 3d core levels and the lack of pronounced three-dimensionality in the measured band structure of BaCu?As? indicate a surface state likely induced by the cleavage of this material in the collapsed tetragonal phase, which is consistent with our observation of amore »Cu?¹ oxidation state. However, the observation of Cu states at similar energy in ? - BaCu?Sb? without the pnictide-pnictide interlayer bonding characteristic of the collapsed tetragonal phase suggests that the short interlayer distance in BaCu?As? follows from the stability of the Cu?¹ rather than the other way around. Our results confirm the prediction that BaCu?As? is an sp metal with weak electronic correlations.« less

  18. Anderson, Corby CSM Advanced Beneficiation Techniques

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Paul Ames Reduced Rare Earth Content High Performance Magnets 2.1.2 McCall, Scott LLNL Additive Manufacturing of Permanent Magnets 2.1.3 Johnson, Frank GE Optimization of Grain...

  19. CSC/CSM 2014 | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTION JEnvironmentalBowerbank, Maine:Kansas: Energy Resources JumpCIA-The WorldISES-source

  20. Thomas Davis

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home RoomPreservationBio-Inspired Solar FuelTechnologyTel:February 25, 2015 |7 D I S C L A I M E R

  1. Health Professions MBA Scholarship Program The UC Davis Graduate School of Management is accepting applications to the Sacramento MBA

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    Health Professions MBA Scholarship Program The UC Davis Graduate School of Management is accepting for the upcoming year A joint information session regarding the Sacramento MBA Program and the Health Professions@ucdavis.edu). If you have questions about the Health Professions Scholarship, please direct them to Abigail Carroll

  2. An Archaeological Survey of Forest Service Road 556 A-2 in the Davy Crockett National Forest Houston County Texas 

    E-Print Network [OSTI]

    Moore, William

    2015-07-30

    An archaeological survey along a 0.52-mile segment (0.83 acre) of Forest Service Road 556 A-2 in Track K-1b-III and Compartment 23 of the Davy Crocket National Forest in eastern Houston County was conducted by Brazos Valley Research Associates (BVRA...

  3. Renewable Energy-Aware Manycast Overlays Thilo Schondienst, Dylan A.P. Davis, Jeremy M. Plante, and Vinod M. Vokkarane

    E-Print Network [OSTI]

    Vokkarane, Vinod M.

    Renewable Energy-Aware Manycast Overlays Thilo Sch¨ondienst, Dylan A.P. Davis, Jeremy M. Plante that are powered by renewable energy sources: Manycast Drop at Greenest Nodes (MA-DGN). The potential for emission traffic. We assume heterogeneously distributed and time-dependent availability of renewable energy sources

  4. Fire Risk and Residential Development: A GIS Analysis1 Jennifer L. Rechel James B. Davis Ted K. Bradshaw2

    E-Print Network [OSTI]

    Fire Risk and Residential Development: A GIS Analysis1 Jennifer L. Rechel James B. Davis Ted K and nonspatial analysis (Berry 1987). Fire risk maps were produced with a GIS by combining basic environmental, California. GIS and Fire Risk Analysis Nevada County in the north central Sierra Nevada was California

  5. UC Davis Policies and Practices for Work with Transgenic Plants and Plant Pathogens 1 | P a g e

    E-Print Network [OSTI]

    Ishida, Yuko

    UC Davis Policies and Practices for Work with Transgenic Plants and Plant Pathogens 1 | P a g e rev. 9110 Work with recombinant DNA organisms (transgenic plants, animal and microbes) and plant contamination or soiling of street clothes and dissemination of plant material or plant pathogens outside

  6. OMRAS2 Metadata Project 2009 M. Mauch, C. Cannam, M. Davies, S. Dixon, C. Harte, S. Kolozali, D. Tidhar

    E-Print Network [OSTI]

    Dixon, Simon

    OMRAS2 Metadata Project 2009 M. Mauch, C. Cannam, M. Davies, S. Dixon, C. Harte, S. Kolozali, D). Chord. These files contain the annotations of chord onsets in physical time using Harte's chord syntax(5), September 2005. [2] C. Harte, M. Sandler, S. A. Abd

  7. UC Davis-LLNL Scientific Advisory Committee Timothy Albertson, MD, PhD, Vice Chair, Internal Medicine

    E-Print Network [OSTI]

    Carmichael, Owen

    UC Davis-LLNL Scientific Advisory Committee Timothy Albertson, MD, PhD, Vice Chair, Internal Berglund, MD, PhD, CTSC Program Director Stuart Cohen, MD, Head of Infection Control, UCDMC Jeffrey Elias, PhD, Manager, Grant Coordination **Captain** Hernando Garzon, MD, Emergency Medicine, Kaiser Jeffrey

  8. Sedimentation of an elliptical object in a two-dimensional foam I.T. Davies, S.J. Cox1

    E-Print Network [OSTI]

    Cox, Simon

    Sedimentation of an elliptical object in a two-dimensional foam I.T. Davies, S.J. Cox1 Institute of Mathematics and Physics, Aberystwyth University, Ceredigion SY23 3BZ, UK Abstract The sedimentation laterally. A larger, more eccentric, ellipse rotates more quickly. Key words: foam, ellipse, sedimentation 1

  9. An Information Theoretic Approach for the Discovery of Irregular and Repetitive Patterns in Genomic Willard Davis, Ananth Kalyanaraman

    E-Print Network [OSTI]

    Cook, Diane J.

    in Genomic Data Willard Davis, Ananth Kalyanaraman and Diane Cook School of Electrical Engineering}@eecs.wsu.edu The unprecedented rate at which genomic data is accumulated underscores the need to develop highly efficient of appropriate computational tools. Here, we propose a new approach for exploring and describing a genome without

  10. About 50 ITS-Davis researchers are participating in the 92nd annual meeting of the Transportation

    E-Print Network [OSTI]

    California at Davis, University of

    Gian-Claudia Sciara, presiding officer International Aspects of Transportation Energy Subcommittee, ADCAbout 50 ITS-Davis researchers are participating in the 92nd annual meeting of the Transportation Harvey, presiding officer Emerging and Innovative Public Transport and Technologies Committee January 14

  11. DaviD EcclEs school of BusinEss alumni magazinE Part of the Family

    E-Print Network [OSTI]

    Tipple, Brett

    story Anne Britt Berentsen leads alumni ambassadors in Norway Part of the family The Les Olson CompanyDaviD EcclEs school of BusinEss alumni magazinE eCCLeS EXCHANGE fall 2013 Part of the Family Les Olson Company opens their hearts and their doors to Business Scholars page 12 Democratizing Data Utah

  12. Phase transformation between Cu(In,Sn){sub 2} and Cu{sub 2}(In,Sn) compounds formed on single crystalline Cu substrate during solid state aging

    SciTech Connect (OSTI)

    Tian, Feifei; Liu, Zhi-Quan Guo, Jingdong

    2014-01-28

    Interfacial reactions between eutectic SnIn and single crystalline Cu during solid-state aging at low temperature were investigated systematically. Three types of phase transformations between Cu(In,Sn){sub 2} layer and Cu{sub 2}(In,Sn) layer were observed, which are Cu(In,Sn){sub 2} grows and Cu{sub 2}(In,Sn) consumes at 40?°C, Cu(In,Sn){sub 2} and Cu{sub 2}(In,Sn) grow simultaneously at 60?°C, as well as Cu(In,Sn){sub 2} consumes and Cu{sub 2}(In,Sn) grows at 80 and 100?°C. According to physicochemical approach, the chemical reactions at Cu/Cu{sub 2}(In,Sn)/Cu(In,Sn){sub 2}/SnIn interfaces were discussed in detail. It was concluded that the diffusion ability of Cu and In atoms dominated different phase transformations. When diffusion constants k{sub 1In2}?>?8/3k{sub 1Cu2} Cu(In,Sn){sub 2} will grow, and if k{sub 1Cu2}???k{sub 1In2} Cu{sub 2}(In,Sn) will grow. Both Cu(In,Sn){sub 2} and Cu{sub 2}(In,Sn) can grow in the condition of k{sub 1In2} ? k{sub 1Cu2}. The values of k{sub 1Cu2} and k{sub 1In2} at different temperatures on (100)Cu and (111)Cu substrate were also calculated or estimated by analyzing the growth kinetics of the compound layers.

  13. $J/?$ Production in $p+p$, $d+Au$, and $Cu+Cu$ Collisions at RHIC

    E-Print Network [OSTI]

    Vince Cianciolo; for the PHENIX Collaboration

    2006-01-05

    PHENIX results for $J/\\psi$ production in $p+p$, $d+Au$, and $Cu+Cu$ collisions at $\\sqrt{s_{NN}}=200$ GeV are presented.

  14. Sense of Place - Alberta, Canada by Beverly Sandalack, Ann Davis, Len Novak and Bob Sandford [EDRA/Places Awards 2006 -- Planning

    E-Print Network [OSTI]

    Sullivan, Lisa

    2006-01-01

    agriculture is part of Alberta’s longstanding heritage.Sense of Place—Alberta, Canada Beverly Sandalack, Ann Davis,by twenty years of growth in Alberta’s oil and natural gas

  15. A Review of "Translation and the Poet’s Life. The Ethics of Translating in English Culture, 1645-1726" by Paul Davis 

    E-Print Network [OSTI]

    Rudrum, Alan

    2011-01-01

    of Translating in English Culture, 1645-1726. Oxford: Oxford University Press, 2008. xi + 324 pp. Review by alan rudrum, simon fraser university. Paul Davis begins his impressive book by commenting on the extraordinary amount of academic work on translation...

  16. Room-temperature Formation of Hollow Cu2O Nanoparticles

    SciTech Connect (OSTI)

    Hung, Ling-I; Tsung, Chia-Kuang; Huang, Wenyu; Yang, Peidong

    2010-01-18

    Monodisperse Cu and Cu2O nanoparticles (NPs) are synthesized using tetradecylphosphonic acid as a capping agent. Dispersing the NPs in chloroform and hexane at room temperature results in the formation of hollow Cu2O NPs and Cu@Cu2O core/shell NPs, respectively. The monodisperse Cu2O NPs are used to fabricate hybrid solar cells with efficiency of 0.14percent under AM 1.5 and 1 Sun illumination.

  17. Fundamental Studies of Methanol Synthesis from CO2 Hydrogenation on Cu(111), Cu Clusters, and Cu/ZnO(000?)

    SciTech Connect (OSTI)

    Liu, P.; Yang, Y.; Evans, J.; Rodriguez, J.A.; White, M.G.

    2010-06-21

    A combination of experimental and theoretical methods were employed to investigate the synthesis of methanolvia CO{sub 2}hydrogenation (CO{sub 2} + 3H{sub 2} {yields} CH{sub 3}OH + H{sub 2}O) on Cu(111) and Cunanoparticle surfaces. High pressure reactivity studies show that Cunanoparticles supported on a ZnO(000{bar 1}) single crystal exhibit a higher catalytic activity than the Cu(111) planar surface. Complementary density functional theory (DFT) calculations of methanol synthesis were also performed for a Cu(111) surface and unsupported Cu{sub 29} nanoparticles, and the results support a higher activity for Cu nanoparticles. The DFT calculations show that methanol synthesis on Cu surfaces proceeds through a formate intermediate and the overall reaction rate is limited by both formate and dioxomethylene hydrogenation. Moreover, the superior activity of the nanoparticle is associated with its fluxionality and the presence of low-coordinated Cu sites, which stabilize the key intermediates, e.g. formate and dioxomethylene, and lower the barrier for the rate-limiting hydrogenation process. The reverse water-gas-shift (RWGS) reaction (CO{sub 2} + H{sub 2} {yields} CO + H{sub 2}O) was experimentally observed to compete with methanol synthesis and was also considered in our DFT calculations. In agreement with experiment, the rate of the RWGS reaction on Cu nanoparticles is estimated to be 2 orders of magnitude faster than methanol synthesis at T = 573 K. The experiments and calculations also indicate that CO produced by the fast RWGS reaction does not undergo subsequent hydrogenation to methanol, but instead simply accumulates as a product. Methanol production from CO hydrogenation via the RWGS pathway is hindered by the first hydrogenation of CO to formyl, which is not stable and prefers to dissociate into CO and H atoms on Cu. Our calculated results suggest that the methanol yield over Cu-based catalysts could be improved by adding dopants or promoters which are able to stabilize formyl species or facilitate the hydrogenation of formate and dioxomethylene. the RWGS pathway is hindered by the first hydrogenation of CO to formyl, which is not stable and prefers to dissociate into CO and H atoms on Cu. Our calculated results suggest that the methanol yield over Cu-based catalysts could be improved by adding dopants or promoters which are able to stabilize formyl species or facilitate the hydrogenation of formate and dioxomethylene.

  18. Cu-Cu direct bonding achieved by surface method at room temperature

    SciTech Connect (OSTI)

    Utsumi, Jun [Advanced Technology Research Center, Mitsubishi Heavy Industries, Ltd., 1-8-1 Sachiura, Kanazawa-ku, Yokohama 236-8515 (Japan); Ichiyanagi, Yuko, E-mail: yuko@ynu.ac.jp [Department of Physics, Graduate School of Engineering, Yokohama National University, Tokiwadai, Hodogaya, Yokohama 240-8501 (Japan)

    2014-02-20

    The metal bonding is a key technology in the processes for the microelectromechanical systems (MEMS) devices and the semiconductor devices to improve functionality and higher density integration. Strong adhesion between surfaces at the atomic level is crucial; however, it is difficult to achieve close bonding in such a system. Cu films were deposited on Si substrates by vacuum deposition, and then, two Cu films were bonded directly by means of surface activated bonding (SAB) at room temperature. The two Cu films, with the surface roughness Ra about 1.3nm, were bonded by using SAB at room temperature, however, the bonding strength was very weak in this method. In order to improve the bonding strength between the Cu films, samples were annealed at low temperatures, between 323 and 473 K, in air. As the result, the Cu-Cu bonding strength was 10 times higher than that of the original samples without annealing.

  19. Direct Epoxidation of Propylene over Stabilized Cu+ Surface Sites on Ti Modified Cu2O

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yang, X.; Kattel, S.; Xiong, K.; Mudiyanselage, K.; Rykov, S.; Senanayake, S. D.; Rodriguez, J. A.; Liu, P.; Stacchiola, D. J.; Chen, J. G.

    2015-07-17

    Direct propylene epoxidation by O2 is a challenging reaction because of the strong tendency for complete combustion. Results from the current study demonstrate the feasibility to tune the epoxidation selectivity by generating highly dispersed and stabilized Cu+ active sites in a TiCuOx mixed oxide. The TiCuOx surface anchors the key surface intermediate, oxametallacycle, leading to higher selectivity for epoxidation of propylene.

  20. The optimization of the production of ??Cu 

    E-Print Network [OSTI]

    Gauny, Ronnie Dean

    1971-01-01

    THE OPTIMIZATION OF THE PRODUCTION OF CU A Thesis by RONNIE DEAN GAUNY Submitted to the Graduate College of Texas A)M University in partial fulfillment of the requirement for the degree of MASTER OF SCIENCE May 1971 Major Subject...: Biophysics (Health Physics) THE OPTIMIZATION OF THE PRODUCTION OF CU A Thesis by RONNIE DEAN GAUNY Approved as to style and content by: Co-Chairman o Committee Mem er C - hairman ommittee Hea o Department May 1971 ABSTRACT The Optimization...

  1. A Raymond Davis Jr. Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973, U.S.A.

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach HomeA Better Anode Design to Improve Lithium-Ion Batteries PrintA New SolarA Present . . .Raymond Davis

  2. DOI: 10.1002/celc.201402182 Electrochemical Reduction of Carbon Dioxide on Cu/CuO

    E-Print Network [OSTI]

    Kenis, Paul J. A.

    DOI: 10.1002/celc.201402182 Electrochemical Reduction of Carbon Dioxide on Cu/CuO Core/Shell Catalysts Yangchun Lan,[a, b] Chao Gai,[c] Paul J. A. Kenis,*[b] and Jiaxing Lu*[a] 1. Introduction Carbon dioxide (CO2) is the most notorious greenhouse gas, which is released by both natural and artificial

  3. $J/?$ production in $Cu+Cu$ and $Au+Au$ collisions measured by PHENIX at RHIC

    E-Print Network [OSTI]

    Andry M. Rakotozafindrabe

    2006-07-11

    PHENIX preliminary results on the $J/\\Psi$ production in $Cu+Cu$ and $Au+Au$ collisions at $\\sqrt{s_{NN}}=200$ GeV are presented. They are compared to results from lower energy experiments NA50 and NA60 at CERN SPS and to expectations from various theoretical models.

  4. Microstructure, impurity and metal cap effects on Cu electromigration

    SciTech Connect (OSTI)

    Hu, C.-K.; Gignac, L. G.; Ohm, J.; Breslin, C. M.; Huang, E.; Bonilla, G.; Liniger, E.; Rosenberg, R. [IBM T. J. Watson Research Center, Yorktown Heights, NY 10598 (United States); Choi, S.; Simon, A. H. [IBM Microelectronic Division, Hopewell Junction, NY 12533 (United States)

    2014-06-19

    Electromigration (EM) lifetimes and void growth of pure Cu, Cu(Mn) alloy, and pure Cu damascene lines with a CoWP cap were measured as a function of grain structure (bamboo, near bamboo, and polycrystalline) and sample temperature. The bamboo grains in a bamboo-polycrystalline grained line play the key role in reducing Cu mass flow. The variation in Cu grain size distribution among the wafers was achieved by varying the metal line height and wafer annealing process step after electroplating Cu and before or after chemical mechanical polishing. The Cu grain size was found to have a large impact on Cu EM lifetime and activation energy, especially for the lines capped with CoWP. The EM activation energy for pure Cu with a CoWP cap from near-bamboo, bamboo-polycrystalline, mostly polycrystalline to polycrystalline only line grain structures was reduced from 2.2 ± 0.2 eV, to 1.7 ± 0.1 eV, to 1.5 ± 0.1 eV, to 0.72 ± 0.05 eV, respectively. The effect of Mn in Cu grain boundary diffusion was found to be dependent on Mn concentration in Cu. The depletion of Cu at the cathode end of the Cu(Mn) line is preceded by an incubation period. Unlike pure Cu lines with void growth at the cathode end and hillocks at the anode end of the line, the hillocks grew at a starting position roughly equal to the Blech critical length from the cathode end of the Cu(Mn) polycrystalline line. The effectiveness of Mn on Cu grain boundary migration can also be qualitatively accounted for by a simple trapping model. The free migration of Cu atoms at grain boundaries is reduced by the presence of Mn due to Cu-solute binding. A large binding energy of 0.5 ± 0.1 eV was observed.

  5. Complex catalytic behaviors of CuTiOx mixed-oxide during CO oxidation...

    Office of Scientific and Technical Information (OSTI)

    reactivity, and selectivity. Here, the activity and stability of the CuTiOx monolayer film supported on Cu(111), CuTiOxCu(111), during CO oxidation was explored using density...

  6. The Effects of Hydrothermal Agingon a Commercial Cu SCR Catalyst...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Hydrothermal Agingon a Commercial Cu SCR Catalyst Examines the effect of hydrothermal aging on the Nox reduction over a commercial Cu-zeolite SCR catalyst. deer11lee.pdf More...

  7. Noise in the processing and application of magnetic gradients Leon Foks, Kristofer Davis, and Yaoguo Li, Center for Gravity, Electrical, and Magnetics, Colorado School of Mines,

    E-Print Network [OSTI]

    Noise in the processing and application of magnetic gradients Leon Foks, Kristofer Davis SUMMARY The increased use of magnetic gradients brings about the need for reliable noise characterization to characterize noise in magnetic gradient data. We use an equivalent source technique and finite differ- ence

  8. UNIVERSITY OF CALIFORNIA, SAN DIEGO UCSD BERKELEY DAVIS IRVINE LOS ANGELES MERCED RIVERSIDE SAN DIEGO SAN FRANCISCO SANTA BARBARA SANTA CRUZ

    E-Print Network [OSTI]

    Gleeson, Joseph G.

    UNIVERSITY OF CALIFORNIA, SAN DIEGO UCSD BERKELEY · DAVIS · IRVINE · LOS ANGELES · MERCED · RIVERSIDE · SAN DIEGO · SAN FRANCISCO SANTA BARBARA · SANTA CRUZ UC San Diego Dean's Office: (858) 822-1123 2016 Provider Proposal Guidelines Thank you for your interest in partnering with UC San Diego Global

  9. The Center for Water-Energy Efficiency is a not-for-profit research and development unit at the University of California, Davis, leading innovations in

    E-Print Network [OSTI]

    California at Davis, University of

    The Center for Water-Energy Efficiency is a not-for-profit research and development unit at the University of California, Davis, leading innovations in water and energy efficient technologies and policies between water and energy and to use and allocate both more efficiently. Collaborating with partners

  10. READINGS FOR EVERYONE Davies, P.J., Bubela, B. and Ferguson, J., 1978, The formation of ooids: Sedimentology, v. 25, p. 703-730.

    E-Print Network [OSTI]

    Kah, Linda

    OOIDS READINGS FOR EVERYONE Davies, P.J., Bubela, B. and Ferguson, J., 1978, The formation of ooids: Sedimentology, v. 25, p. 703-730. Given, R.K., and Wilkinson, B.H., 1985, Kinetic control of morphology, composition and mineralogy of abiotic sedimentary carbonates: Journal of Sedimentary Petrology v. 55, p. 109

  11. 3D joint inversion of gradient and total-field magnetic data Kristofer Davis and Yaoguo Li, Center for Gravity, Electrical, and Magnetics, Colorado School of Mines, Golden,

    E-Print Network [OSTI]

    for Gravity, Electrical, and Magnetics, Colorado School of Mines, Golden, Colorado SUMMARY Recently3D joint inversion of gradient and total-field magnetic data Kristofer Davis and Yaoguo Li, Center and demonstrate it with a synthetic and field example. INTRODUCTION Airborne magnetic gradiometry data

  12. Please return this form to the School of Medicine, Registrar's Office. 4610 X Street, Ste 1208, Sacramento 95817. University of California, Davis

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    , Sacramento 95817. University of California, Davis School of Medicine, Registrar's Office Insurance Waiver Form 4610 X Street, Suite 1208, Sacramento CA 95817-2200 / Phone: (916) 734-4990 / Fax: (916) 734 Education Building 4610 X Street, Suite 1208 Sacramento, CA 95817 Fax: (916) 734-2178 3. Waiver applications

  13. Please return this form to the School of Medicine, Registrar's Office. 4610 X Street, Ste 1208, Sacramento 95817. University of California, Davis

    E-Print Network [OSTI]

    Leistikow, Bruce N.

    , Sacramento 95817. University of California, Davis School of Medicine, Registrar's Office Insurance Waiver Form 4610 X Street, Suite 1208, Sacramento CA 95817-2200 / Phone: (916) 734-4664 / Fax: (916) 734: Krista Newberry Medical Education Building 4610 X Street, Suite 1208 Sacramento, CA 95817 Fax: (916) 734

  14. "Leveraging University Expertise to Inform Better Policy" The UC Davis Policy Institute for Energy, Environment and the Economy is a bold new initiative that leverages world-class

    E-Print Network [OSTI]

    California at Davis, University of

    the sustainable management and development of biomass in California for the production of renewable energy and Agricultural Research (CIFAR) energy management project leader; and Doug Wickizer, chief of environmental"Leveraging University Expertise to Inform Better Policy" The UC Davis Policy Institute for Energy

  15. Two different cationic positions in Cu-SSZ-13?

    SciTech Connect (OSTI)

    Kwak, Ja Hun; Zhu, Haiyang; Lee, Jong H.; Peden, Charles HF; Szanyi, Janos

    2012-04-18

    H2-TPR and FTIR were used to characterize the Cu ions present in Cu-SSZ-13 zeolite at different ion exchange levels. The results obtained are consistent with the presence of Cu ions in two distinct cationic positions of the SSZ-13 framework.

  16. Rapid-response analysis of the Davis-Besse loss-of-feedwater event on June 9, 1985

    SciTech Connect (OSTI)

    Lime, J.F.; Nassersharif, B.; Boyack, B.E.

    1986-01-01

    At the request of the US Nuclear Regulatory Commission (NRC), we performed a rapid-response analysis of the loss-of-feedwater (LOFW) event that occurred at the Toledo Edison Davis-Besse plant on June 9, 1985. The initial 831 s of the plant transient were simulated and, in addition, four postulated transients were calculated to determine how the plant would have responded if feedwater had not been restored, and how it would have responded to a feed-and-bleed (FAB) decay-heat removal procedure initiated at different times. The Transient Reactor Analysis Code was used for this analysis. We completed these calculations within a two-week period and provided a report to the NRC 30 days later. Our analysis showed that FAB was a viable decay-heat-removal procedure for the Davis-Besse plant for the initiation times analyzed. With complete LOFW and no alternate decay-heat removal procedure, we calculated that core uncovery would have occurred at about 9200 s. FAB initiated at 8 min and 13 min after complete LOFW, which in the actual LOFW transient occurred 6 min after the initiating event of a main-feedwater pump trip, was successful in that the primary system remained subcooled and water-solid throughout the transient. FAB initiated at 28 min after complete LOFW was considered successful even though it resulted in a loss of subcooling, a net loss in primary inventory, and a slow voiding of the primary system. The core would have remained covered for the nine hours that we estimated for the primary pressure to decrease to the residual-heat-removal pressure.

  17. Bi-Se doped with Cu, p-type semiconductor

    DOE Patents [OSTI]

    Bhattacharya, Raghu Nath; Phok, Sovannary; Parilla, Philip Anthony

    2013-08-20

    A Bi--Se doped with Cu, p-type semiconductor, preferably used as an absorber material in a photovoltaic device. Preferably the semiconductor has at least 20 molar percent Cu. In a preferred embodiment, the semiconductor comprises at least 28 molar percent of Cu. In one embodiment, the semiconductor comprises a molar percentage of Cu and Bi whereby the molar percentage of Cu divided by the molar percentage of Bi is greater than 1.2. In a preferred embodiment, the semiconductor is manufactured as a thin film having a thickness less than 600 nm.

  18. Efficient 3D inversion of magnetic data via octree mesh discretization, space-filling curves, and Kristofer Davis and Yaoguo Li, Center for Gravity, Electrical, and Magnetics, Colorado School of Mines, Golden,

    E-Print Network [OSTI]

    , and wavelets Kristofer Davis and Yaoguo Li, Center for Gravity, Electrical, and Magnetics, Colorado SchoolEfficient 3D inversion of magnetic data via octree mesh discretization, space-filling curves

  19. Method of producing .sup.67 Cu

    DOE Patents [OSTI]

    O'Brien, Jr., Harold A. (Los Alamos, NM); Barnes, John W. (Los Alamos, NM); Taylor, Wayne A. (Los Alamos, NM); Thomas, Kenneth E. (Los Alamos, NM); Bentley, Glenn E. (Los Alamos, NM)

    1984-01-01

    A method of producing carrier-free .sup.67 Cu by proton spallation combined with subsequent chemical separation and purification is disclosed. A target consisting essentially of pressed zinc oxide is irradiated with a high energy, high current proton beam to produce a variety of spallogenic nuclides, including .sup.67 Cu and other copper isotopes. The irradiated target is dissolved in a concentrated acid solution to which a palladium salt is added. In accordance with the preferred method, the spallogenic copper is twice coprecipitated with palladium, once with metallic zinc as the precipitating agent and once with hydrogen sulfide as the precipitating agent. The palladium/copper precipitate is then dissolved in an acid solution and the copper is separated from the palladium by liquid chromatography on an anion exchange resin.

  20. A new Cu–cysteamine complex: structure and optical properties

    SciTech Connect (OSTI)

    Ma, Lun; Chen, Wei; Schatte, Gabriele; Wang, Wei; Joly, Alan G.; Huang, Yining; Sammynaiken, Ramaswami; Hossu, Marius

    2014-06-07

    Here we report the structure and optical properties of a new Cu–cysteamine complex (Cu–Cy) with a formula of Cu3Cl(SR)2 (R ¼ CH2CH2NH2). This Cu–Cy has a different structure from a previous Cu–Cy complex, in which both thio and amine groups from cysteamine bond with copper ions. Single-crystal X-ray diffraction and solid-state nuclear magnetic resonance results show that the oxidation state of copper in Cu3Cl(SR)2 is +1 rather than +2. Further, Cu3Cl(SR)2 has been observed to show intense photoluminescence and X-ray excited luminescence. More interesting is that Cu3Cl(SR)2 particles can produce singlet oxygen under irradiation by light or X-ray. This indicates that Cu3Cl(SR)2 is a new photosensitizer that can be used for deep cancer treatment as X-ray can penetrate soft tissues. All these findings mean that Cu3Cl(SR)2 is a new material with potential applications for lighting, radiation detection and cancer treatment.

  1. Growth and Oxidation of Thin Film Al(2)Cu

    SciTech Connect (OSTI)

    SON,KYUNG-AH; MISSERT,NANCY A.; BARBOUR,J. CHARLES; HREN,J.J.; COPELAND,ROBERT GUILD; MINOR,KENNETH G.

    2000-01-18

    Al{sub 2}Cu thin films ({approx} 382 nm) are fabricated by melting and resolidifying Al/Cu bilayers in the presence of a {micro} 3 nm Al{sub 2}O{sub 3} passivating layer. X-ray Photoelectron Spectroscopy (XPS) measures a 1.0 eV shift of the Cu2p{sub 3/2} peak and a 1.6 eV shift of the valence band relative to metallic Cu upon Al{sub 2}Cu formation. Scanning Electron microscopy (SEM) and Electron Back-Scattered Diffraction (EBSD) show that the Al{sub 2}Cu film is composed of 30-70 {micro}m wide and 10-25 mm long cellular grains with (110) orientation. The atomic composition of the film as estimated by Energy Dispersive Spectroscopy (EDS) is 67 {+-} 2% Al and 33 {+-} 2% Cu. XPS scans of Al{sub 2}O{sub 3}/Al{sub 2}Cu taken before and after air exposure indicate that the upper Al{sub 2}Cu layers undergo further oxidation to Al{sub 2}O{sub 3} even in the presence of {approx} 5 nm Al{sub 2}O{sub 3}. The majority of Cu produced from oxidation is believed to migrate below the Al{sub 2}O{sub 3} layers, based upon the lack of evidence for metallic Cu in the XPS scans. In contrast to Al/Cu passivated with Al{sub 2}O{sub 3}, melting/resolidifying the Al/Cu bilayer without Al{sub 2}O{sub 3} results in phase-segregated dendritic film growth.

  2. Subcellular fractionation of Cu exposed oysters, Crassostrea virginica, and Cu accumulation from a biologically incorporated Cu rich oyster diet in Fundulus

    E-Print Network [OSTI]

    Grosell, Martin

    and a pellet supplement (20.5±1.0 µg Cu g-1 d.w.) both at 5% body mass day-1 . In killifish, Cu increased ~7 and Wood, 2008). This may account for the high toxicity observed in experiments using naturally

  3. review of: A Companion to Linear B: Mycenaean Greek Texts and Their World, edited by Yves Duhous and Anna Morporgo Davies, Louvain & Dudley MA: Peeters 2008

    E-Print Network [OSTI]

    Younger, John G.

    2009-10-01

    n A e A n Gr e e k te x t s A n d th e i r Wo r L d . Vo L . 1 edited by yves duhOux and anna MORPuRgO davies. PP. xi + 448, figs. 96, tables 5. PeeteRs, lOuvain and dudley, Mass. 2008. €55. isbn 078-90-42-1848-1 (PaPeR). This volume has nine... n A e A n Gr e e k te x t s A n d th e i r Wo r L d . Vo L . 1 edited by yves duhOux and anna MORPuRgO davies. PP. xi + 448, figs. 96, tables 5. PeeteRs, lOuvain and dudley, Mass. 2008. €55. isbn 078-90-42-1848-1 (PaPeR). This volume has nine...

  4. Three approaches to economical photovoltaics: conformal Cu2S, organic luminescent films, and PbSe nanocrystal superlattices

    E-Print Network [OSTI]

    Carbone, Ian Anthony

    2013-01-01

    water caused by hydraulic fracturing remains unproven.Reply to davies: Hydraulic fracturing remains a possibleand flooding. [47] Hydraulic fracturing is a relatively new

  5. Charged Particle Multiplicities in Ultra-relativistic Au+Au and Cu+Cu Collisions

    E-Print Network [OSTI]

    B. B. Back

    2006-04-26

    The PHOBOS collaboration has carried out a systematic study of charged particle multiplicities in Cu+Cu and Au+Au collisions at the Relativistic Heavy-Ion Collider (RHIC) at Brookhaven National Laboratory. A unique feature of the PHOBOS detector is its ability to measure charged particles over a very wide angular range from 0.5 to 179.5 deg. corresponding to |eta|<5.4. The general features of the charged particle multiplicity distributions as a function of pseudo-rapidity, collision energy and centrality, as well as system size, are discussed.

  6. Relationship between morphologies and orientations of Cu{sub 6}Sn{sub 5} grains in Sn3.0Ag0.5Cu solder joints on different Cu pads

    SciTech Connect (OSTI)

    Tian, Yanhong, E-mail: tianyh@hit.edu.cn; Zhang, Rui; Hang, Chunjin; Niu, Lina; Wang, Chunqing

    2014-02-15

    The morphologies and orientations of Cu{sub 6}Sn{sub 5} intermetallic compounds in the Sn3.0Ag0.5Cu solder joints both on polycrystalline and single crystal Cu pads under different peak reflow temperatures and times above liquids were investigated. The relationship between Cu{sub 6}Sn{sub 5} grain orientations and morphologies was clarified. At the interface of Sn3.0Ag0.5Cu/polycrystalline Cu pad, scalloped Cu{sub 6}Sn{sub 5} intermetallic compounds formed at 250 °C and roof shape Cu{sub 6}Sn{sub 5} formed at 300 °C. Both scalloped Cu{sub 6}Sn{sub 5} and roof shape Cu{sub 6}Sn{sub 5} had a preferred orientation of (0001) plane being parallel to polycrystalline Cu pad surface. Besides, the percentage of large angle grain boundaries increased as the peak reflow temperature rose. At the interface of Sn3.0Ag0.5Cu/(111) single crystal Cu pad, the Cu{sub 6}Sn{sub 5} intermetallic compounds were mainly scallop-type at 250 °C and were prism type at 300 °C. The prismatic Cu{sub 6}Sn{sub 5} grains grew along the three preferred directions with the inter-angles of 60° on (111) single crystal Cu pad while along two perpendicular directions on (100) single crystal Cu pad. The orientation relationship between Cu{sub 6}Sn{sub 5} grains and the single crystal Cu pads was investigated by electron backscatter diffraction technology. In addition, two types of hollowed Cu{sub 6}Sn{sub 5} intermetallic compounds were found inside the joints of polycrystalline Cu pads. The long hexagonal Cu{sub 6}Sn{sub 5} strips were observed in the joints reflowing at 250 °C while the hollowed Cu{sub 6}Sn{sub 5} strips with the ‘?’ shape cross-sections appeared at 300 °C, which was attributed to the different grain growth rates of different Cu{sub 6}Sn{sub 5} crystal faces. - Highlights: • The orientation of interfacial Cu{sub 6}Sn{sub 5} grains was obtained by EBSD technology. • Two types of hollowed Cu{sub 6}Sn{sub 5} strips were found at different temperatures. • The formation mechanism of hollowed Cu{sub 6}Sn{sub 5} was elaborated based on Bravais law. • The relationship between Cu{sub 6}Sn{sub 5} grain orientations and morphologies was clarified.

  7. Understanding NOx SCR Mechanism and Activity on Cu/Chabazite...

    Office of Scientific and Technical Information (OSTI)

    Book: Understanding NOx SCR Mechanism and Activity on CuChabazite Structures throughout the Catalyst Life Cycle Citation Details In-Document Search Title: Understanding NOx SCR...

  8. Cost of presumptive source term Remedial Actions Laboratory for energy-related health research, University of California, Davis

    SciTech Connect (OSTI)

    Last, G.V.; Bagaasen, L.M.; Josephson, G.B.; Lanigan, D.C.; Liikala, T.L.; Newcomer, D.R.; Pearson, A.W.; Teel, S.S.

    1995-12-01

    A Remedial Investigation/Feasibility Study (RI/FS) is in progress at the Laboratory for Energy Related Health Research (LEHR) at the University of California, Davis. The purpose of the RI/FS is to gather sufficient information to support an informed risk management decision regarding the most appropriate remedial actions for impacted areas of the facility. In an effort to expedite remediation of the LEHR facility, the remedial project managers requested a more detailed evaluation of a selected set of remedial actions. In particular, they requested information on both characterization and remedial action costs. The US Department of Energy -- Oakland Office requested the assistance of the Pacific Northwest National Laboratory to prepare order-of-magnitude cost estimates for presumptive remedial actions being considered for the five source term operable units. The cost estimates presented in this report include characterization costs, capital costs, and annual operation and maintenance (O&M) costs. These cost estimates are intended to aid planning and direction of future environmental remediation efforts.

  9. New Resolved Resonance Region Evaluation for 63Cu and 65Cu for Nuclear Criticality Safety Program

    SciTech Connect (OSTI)

    Sobes, Vladimir; Leal, Luiz C; Guber, Klaus H; Forget, Benoit; Kopecky, S.; Schillebeeckx, P.; Siegler, P.

    2014-01-01

    A new resolved resonance region evaluation of 63Cu and 65Cu was done in the energy region from 10-5 eV to 99.5 keV. The R-Matrix SAMMY method using the Reich-Moore approximation was used to create a new set of consistent resonance parameters. The new evaluation was based on three experimental transmission data sets; two measured at ORELA and one from MITR, and two radiative capture experimental data sets from GELINA. A total of 141 new resonances were identied for 63Cu and 117 for 65Cu. The corresponding set of external resonances for each isotope was based on the identied resonances above 99.5 keV from the ORELA transmission data. The negative external levels (bound levels) were determined to match the dierential thermal cross section measured at the MITR. Double dierential elastic scattering cross sections were calculated from the new set of resonance parameters. Benchmarking calculations were carried out on a set of ICSBEP benchmarks. This work is in support of the DOE Nuclear Criticality Safety Program.

  10. Non-uniform Aging on Super Duty Diesel Truck Aged Urea Cu/Zeolite...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    uniform Aging on Super Duty Diesel Truck Aged Urea CuZeolite SCR Catalysts Non-uniform Aging on Super Duty Diesel Truck Aged Urea CuZeolite SCR Catalysts CuZeolite SCR catalysts...

  11. [Purification of {sup 67}Cu]. Progress report

    SciTech Connect (OSTI)

    DeNardo, S.J.

    1994-09-01

    This report documents progress made in several areas of research and describes results which have not yet been published. These areas include: Purification of {sup 67}Cu; Macrocyclic chelates for targeted therapy; Studies of biologic activation associated with molecular receptor increase and tumor response in ChL6/L6 protocol patients; Lym-1 single chain genetically engineered molecules; Analysis of molecular genetic coded messages to enhance tumor response; Human dosimetry and therapeutic human use radiopharmaceuticals; studies in phantoms; Quantitative SPECT; Preclinical studies; and Clinical studies.

  12. Science DMZ Implemented at CU Boulder

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust, High-ThroughputUpcoming ReleaseSecurityPediatric CancerSchedulesItemActivitiesScienceCU

  13. Antiferromagnetism in EuCu2As2 and EuCu1.82Sb2 single crystals

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Anand, V. K.; Johnston, D. C.

    2015-05-07

    Single crystals of EuCu2As2 and EuCu2Sb2 were grown from CuAs and CuSb self-flux, respectively. The crystallographic, magnetic, thermal, and electronic transport properties of the single crystals were investigated by room-temperature x-ray diffraction (XRD), magnetic susceptibility ? versus temperature T, isothermal magnetization M versus magnetic field H, specific heat Cp(T), and electrical resistivity ?(T) measurements. EuCu2As2 crystallizes in the body-centered tetragonal ThCr2Si2-type structure (space group I4/mmm), whereas EuCu2Sb2 crystallizes in the related primitive tetragonal CaBe2Ge2-type structure (space group P4/nmm). The energy-dispersive x-ray spectroscopy and XRD data for the EuCu2Sb2 crystals showed the presence of vacancies on the Cu sites, yielding themore »actual composition EuCu1.82Sb2. The ?(T) and Cp(T) data reveal metallic character for both EuCu2As2 and EuCu1.82Sb2. Antiferromagnetic (AFM) ordering is indicated from the ?(T),Cp(T), and ?(T) data for both EuCu2As2 (TN = 17.5 K) and EuCu1.82Sb2 (TN = 5.1 K). In EuCu1.82Sb2, the ordered-state ?(T) and M(H) data suggest either a collinear A-type AFM ordering of Eu+2 spins S = 7/2 or a planar noncollinear AFM structure, with the ordered moments oriented in the tetragonal ab plane in either case. This ordered-moment orientation for the A-type AFM is consistent with calculations with magnetic dipole interactions. As a result, the anisotropic ?(T) and isothermal M(H) data for EuCu2As2, also containing Eu+2 spins S = 7/2, strongly deviate from the predictions of molecular field theory for collinear AFM ordering and the AFM structure appears to be both noncollinear and noncoplanar.« less

  14. CSM Trailhead Design Guide 5 May 2009 1

    E-Print Network [OSTI]

    be tested with the major web browsers: Internet Explorer and Firefox/Mozilla/Netscape at the minimum on the Trailhead tab. The content of the channel is an HTML page on the campus web server. Channel height' monitor and web browser settings we encourage that users be allowed to change in-line frame channel

  15. National Engineers Week with CSM and Lockheed Martin

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration wouldMass map shinesSolar Photovoltaic Solar Photovoltaic FindNational4 AnnualTechnologyNational

  16. Microwave characteristics of the high temperature superconductor YBa?Cu?O??[delta] 

    E-Print Network [OSTI]

    Skrehot, Michael Kevin

    1989-01-01

    . The recent discovery of superconductivity above the boiling point of Nitrogen in copper oxides has opened the experimental door to virtually anyone who is inter- ested. As a result, every aspect of the new materials is being intensely studied... YBaCuO, or more specifically YBazCusOr s, is an oxygen deficient orthorhombic perovskite structure. 6 varies from 0 to 0. 6, with 6 = 0 12 01 (382 A) 9 Cu ~ Cu I 0 o Cu o w 04 0 0 Cu o 0 Cu ~ CuZ (11. 88 A) 0 02 0 Qv 0 o*ygeu Cu oy oooo...

  17. In situ visualization of metallurgical reactions in nanoscale Cu/Sn diffusion couples

    SciTech Connect (OSTI)

    Yin, Qiyue [State Univ. of New York at Binghamton, Binghamton, NY (United States); Stach, Eric A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Gao, Fan [Univ. of Massachusetts, Lowell, MA (United States); Zhou, Guangwen [State Univ. of New York at Binghamton, Binghamton, NY (United States); Gu, Zhiyong [Univ. of Massachusetts, Lowell, MA (United States)

    2015-01-01

    The Cu–Sn metallurgical soldering reaction in two-segmented Cu–Sn nanowires is visualized by in-situ transmission electron microscopy. By varying the relative lengths of Cu and Sn segments, we show that the metallurgical reaction starts at ~ 200 ° with the formation of a Cu–Sn solid solution for the Sn/Cu length ratio smaller than 1:5 while the formation of Cu–Sn intermetallic compounds (IMCs) for larger Sn/Cu length ratios. Upon heating the nanowires up to ~ 500 °C, two phase transformation pathways occur, ?-Cu?Sn? ? ?-Cu?Sn ? ?-Cu??Sn?? for nanowires with a long Cu segment and ?-Cu?Sn? ? ?-Cu?Sn ? ?-Cu?Sn with a short Cu segment. The dynamic in situ TEM visualization of the evolution of Kirkendall voids demonstrates that Cu diffuses faster both in Sn and IMCs than that of Sn in Cu? and IMCs, which is the underlying cause of the dependence of the IMC formation and associated phase evolution on the relative lengths of the Cu and Sn segments.

  18. Function Specific Analysis of the Thermal Durability of Cu-Zeolite...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Function Specific Analysis of the Thermal Durability of Cu-Zeolite SCR Catalyst Function Specific Analysis of the Thermal Durability of Cu-Zeolite SCR Catalyst Presentation given...

  19. In situ visualization of metallurgical reactions in nanoscale Cu/Sn diffusion couples

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yin, Qiyue; Stach, Eric A.; Gao, Fan; Zhou, Guangwen; Gu, Zhiyong

    2015-02-10

    The Cu–Sn metallurgical soldering reaction in two-segmented Cu–Sn nanowires is visualized by in-situ transmission electron microscopy. By varying the relative lengths of Cu and Sn segments, we show that the metallurgical reaction starts at ~ 200 ° with the formation of a Cu–Sn solid solution for the Sn/Cu length ratio smaller than 1:5 while the formation of Cu–Sn intermetallic compounds (IMCs) for larger Sn/Cu length ratios. Upon heating the nanowires up to ~ 500 °C, two phase transformation pathways occur, ?-Cu?Sn? ? ?-Cu?Sn ? ?-Cu??Sn?? for nanowires with a long Cu segment and ?-Cu?Sn? ? ?-Cu?Sn ? ?-Cu?Sn with amore »short Cu segment. The dynamic in situ TEM visualization of the evolution of Kirkendall voids demonstrates that Cu diffuses faster both in Sn and IMCs than that of Sn in Cu? and IMCs, which is the underlying cause of the dependence of the IMC formation and associated phase evolution on the relative lengths of the Cu and Sn segments.« less

  20. Deactivation Mechanism of Cu/Zeolite SCR Catalyst Due to Reductive...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Mechanism of CuZeolite SCR Catalyst Due to Reductive Hydrothermal Aging Deactivation Mechanism of CuZeolite SCR Catalyst Due to Reductive Hydrothermal Aging Better control for...

  1. Application of cluster-plus-glue-atom model to barrierless Cu–Ni–Ti and Cu–Ni–Ta films

    SciTech Connect (OSTI)

    Li, Xiaona, E-mail: lixiaona@dlut.edu.cn; Ding, Jianxin; Wang, Miao; Dong, Chuang [Key Laboratory of Materials Modification by Laser, Ion and Electron Beams (Dalian University of Technology), Ministry of Education, Dalian 116024 (China); Chu, Jinn P. [Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan (China)

    2014-11-01

    To improve the thermal stability of copper and avoid its diffusion into surrounding dielectrics or interfacial reactions with them, the authors applied the cluster-plus-glue-atom model to investigate barrierless Cu–Ni–M (M?=?Ti or Ta) seed layers. The dissolution of the third element (Ti or Ta) in the Cu lattice with the aid of Ni significantly improved the thermal stability of the Cu seed layer. The appropriate M/Ni (M?=?Ti or Ta) ratio was selected to obtain a low resistivity: the resistivity was as low as 2.5??? cm for the (Ti{sub 1.5/13.5}Ni{sub 12/13.5}){sub 0.3}Cu{sub 99.7} film and 2.8??? cm for the (Ta{sub 1.1/13.1}Ni{sub 12/13.1}){sub 0.4}Cu{sub 99.6} film after annealing at 500?°C for 1?h. After annealing at 500?°C for 40?h, the two films remained stable without forming a Cu{sub 3}Si compound. The authors confirmed that the range of applications of the cluster-plus-glue-atom model could be extended. Therefore, a third element M with negative enthalpies of mixing with both Cu and Ni could be selected, under the premise that the mixing enthalpy of M–Ni is more negative than that of M–Cu.

  2. Photoelectrochemistry, Electronic Structure, and Bandgap Sizes of Semiconducting Cu(I)-Niobates and Cu(I)-Tantalates

    SciTech Connect (OSTI)

    Maggard, Paul A.

    2013-11-14

    Semiconducting metal-oxides have remained of intense research interest owing to their potential for achieving efficient solar-driven photocatalytic reactions in aqueous solutions that occur as a result of their bandgap excitation. The photocatalytic reduction of water or carbon dioxide to generate hydrogen or hydrocarbon fuels, respectively, can be driven on p-type (photocathodic) electrodes with suitable band energies. However, metal-oxide semiconductors are typically difficult to dope as p-type with a high mobility of carriers. The supported research led to the discovery of new p-type Cu(I)-niobate and Cu(I)-tantalate film electrodes that can be prepared on FTO glass. New high-purity flux syntheses and the full structural determination of several Cu(I)-containing niobates and tantalates have been completed, as well as new investigations of their optical and photoelectrochemical properties and electronic structures via density-functional theory calculations. For example, CuNbO3, Cu5Ta11O30 and CuNb3O8 were prepared in high purity and their structures were characterized by both single-crystal and powder X-ray diffraction techniques. These two classes of Cu(I)-containing compounds exhibit optical bandgap sizes ranging from ~1.3 eV to ~2.6 eV. Photoelectrochemical measurements of these compounds show strong photon-driven cathodic currents that confirm the p-type semiconductor behavior of CuNbO3, CuNb3O8, and Cu5Ta11O30. Incident-photon-to-current efficiencies are measured that approach greater than ~1%. Electronic-structure calculations based on density functional theory reveal the visible-light absorption stems from a nearly-direct bandgap transition involving a copper-to-niobium or tantalum (d10 to d0) charge-transfer excitations.

  3. Nanopore Structure and Sorption Properties of Cu-BTC Metal-Organic

    E-Print Network [OSTI]

    Muzzio, Fernando J.

    Nanopore Structure and Sorption Properties of Cu-BTC Metal-Organic Framework Aleksey Vishnyakov on the copper(II) benzene-1,3,5-tricarboxylate metal-organic framework (Cu-BTC). We constructed a molecular structural model of Cu-BTC. The pore network of Cu-BTC has a simple cubic symmetry. It consists of main

  4. The UC Davis Policy Institute for Energy, Environment and the Economy is part of a bold new campus-wide initiative to dramatically increase the value of UC research to the policy-making process by identifying priority policy information needs,

    E-Print Network [OSTI]

    California at Davis, University of

    of fuels and electricity and energy is required for the treatment, transport and heating of water­ a coupled relationship known as the water-energy nexus. The scale of this overlap in California Davis Center for Water Energy Efficiency Frank Spasaro - Southern California Gas Company Grant Davis

  5. Effects of residual impurities in electroplated Cu on the Kirkendall void formation during soldering

    SciTech Connect (OSTI)

    Kim, J. Y.; Yu Jin [Department of Materials Science and Engineering, KAIST, 373-1 Guseong-dong, Yuseong-gu, Daejeon 305-701 (Korea, Republic of)

    2008-03-03

    Additions of bis-(sodium sulfopropyl)-disulfide (SPS) to the Cu electroplating bath strongly affected the characteristics of Kirkendall void formation when the Cu film is soldered with Sn-3.5Ag solder and subsequently aged. Voids were predominantly distributed near the Cu{sub 3}Sn/Cu interface with SPS, but randomly distributed in the Cu{sub 3}Sn layer without SPS. In situ Auger electron spectroscopy of voids at the Cu{sub 3}Sn/Cu interface revealed surface segregation of S atoms, which came from SPS put into the bath as an additive. The S segregation to Cu{sub 3}Sn/Cu interface lowers the interface energy, thereby accelerating the void nucleation. Assisted by the high surface diffusivity of Cu and the presence of excess vacancies arising from the Kirkendall effect, voids tend to localize at the interface, which would result in serious degradation of the joint reliability.

  6. Crystallization of Zr2PdxCu(1-x) and Zr2NixCu(1-x) Metallic Glass

    SciTech Connect (OSTI)

    Min Xu

    2008-08-18

    One interesting aspect of rretallic glasses is the numerous instances of the deviation of the phase selection from the amorphous state to thermodynamically stable phases during the crystallization process. Their devitrification pathways allow us to study the relationship between the original amorphous structure and their crystalline counter parts. Among the various factors of phase selections, size and electronic effects have been most extensively studied. Elucidating the phase selection process of a glassy alloy will be helpful to fill in the puzzle of the changes from disordered to ordered structures. In this thesis, Two model Zr{sub 2}Pd{sub x}Cu{sub (1-x)} and Zr{sub 2}Ni{sub x}Cu{sub (1-x)} (x = 0, 0.25, 0.5, 0.75 and 1) glassy systems were investigated since: (1) All of the samples can be made into a homogenous metallic glass; (2) The atomic radii differ from Pd to Cu is by 11%, while Ni has nearly the identical atomic size compare to Cu. Moreover, Pd and Ni differ by only one valence electron from Cu. Thus, these systems are ideal to test the idea of the effects of electronic structure and size factors; (3) The small number of components in these pseudo binary systems readily lend themselves to theoretical modeling. Using high temperature X-ray diffraction {HTXRD) and thermal analysis, topological, size, electronic, bond and chemical distribution factors on crystallization selections in Zr{sub 2}Pd{sub x}Cu{sub (1-x)} and Zr{sub 2}Ni{sub x}Cu{sub (1-x)} metallic glass have been explored. All Zr{sub 2}Pd{sub x}Cu{sub (1-x)} compositions share the same Cu11b phase with different pathways of meta-stable, icosahedral quasicrystalline phase (i-phase), and C16 phase formations. The quasicrystal phase formation is topologically related to the increasing icosahedral short range order (SRO) with Pd content in Zr{sub 2}Pd{sub x}Cu{sub (1·x)} system. Meta-stable C16 phase is competitive with C11b phase at x = 0.5, which is dominated by electronic structure rather than size effects. Cu-rich and Ni-rich compositions in Zr{sub 2}Ni{sub x}Cu{sub (1-x)} trend to divitrify to C11b or C16 phases respectively. In the proposed pseudo binary phase diagram, the domain of C16, C11b and co-existence phases are mainly related with the topology in the amorphous structure and formation enthalpies of crystalline phases.

  7. MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ELECTROPLATED Cu THIN FILMS

    E-Print Network [OSTI]

    Volinsky, Alex A.

    MICROSTRUCTURE AND MECHANICAL PROPERTIES OF ELECTROPLATED Cu THIN FILMS A.A. Volinsky* , J. Vella microns were electroplated on top of the adhesion-promoting barrier layers on single crystal silicon

  8. Improving properties of Mg with Al–Cu additions

    SciTech Connect (OSTI)

    Rashad, Muhammad; Pan, Fusheng; Asif, Muhammad; Hussain, Shahid; Saleem, Muhammad

    2014-09-15

    The present work reports improvement in tensile properties of the Mg matrix reinforced with micron-sized copper–aluminum particulate hybrids. The Al–Cu particulate hybrids were incorporated into the Mg matrix through powder metallurgy method. The synthesized alloys exhibited homogeneously dispersed Mg{sub 2}Cu particles in the matrix, therefore leading to a 110% increase in yield strength (221 MPa) and a 72% enhancement in ultimate tensile strength (284 MPa) by addition of 1.0 wt.%Al–0.6 wt.%Cu particle hybrids. Optical microscopy, scanning election microscopy, transmission electron microscopy and X-ray diffraction were used to investigate the microstructure and intermetallic phases of the synthesized alloys. - Highlights: • Mg matrix is reinforced with Al–Cu particulate hybrids. • Powder metallurgic method is used to fabricate the alloys. • Tensile strength and ductility were increased simultaneously.

  9. Understanding the Deactivation Mechanisms of Cu/Zeolite SCR Catalysts...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    of CuZeolite urea-SCR catalysts in diesel applications, the effects of engine and lab aging on catalyst reactivity and material properties were investigated. deer08cheng.pdf...

  10. Performance and mix measurements of indirect drive Cu doped Be...

    Office of Scientific and Technical Information (OSTI)

    indirect drive Cu doped Be implosions Authors: Casey, D T ; Woods, T ; Smalyuk, V A ; Hurricane, O A ; Glebov, V Y ; Stoeckl, C ; Theobald, W ; Wallace, R ; Nikroo, A ; Shuldberg,...

  11. Reaction kinetics of a-CuInSe2 formation from an In2Se3/CuSe bilayer precursor film

    E-Print Network [OSTI]

    Anderson, Timothy J.

    with Ga or S are proven absorber materials for high efficiency thin film solar cells. Interestingly CIGS system using the stacked elemental film precursors (e.g. glass/Cu/In/Se, glass/Cu/Se, glass

  12. Growth, characterization and electrochemical properties of hierarchical CuO nanostructures for supercapacitor applications

    SciTech Connect (OSTI)

    Krishnamoorthy, Karthikeyan; Kim, Sang-Jae

    2013-09-01

    Graphical abstract: - Highlights: • Hierarchical CuO nanostructures were grown on Cu foil. • Monoclinic phase of CuO was grown. • XPS analysis revealed the presence of Cu(2p{sub 3/2}) and Cu(2p{sub 1/2}) on the surfaces. • Specific capacitance of 94 F/g was achieved for the CuO using cyclic voltammetry. • Impedance spectra show their pseudo capacitor applications. - Abstract: In this paper, we have investigated the electrochemical properties of hierarchical CuO nanostructures for pseudo-supercapacitor device applications. Moreover, the CuO nanostructures were formed on Cu substrate by in situ crystallization process. The as-grown CuO nanostructures were characterized using X-ray diffraction (XRD), Fourier transform-infra red spectroscopy (FT-IR), X-ray photoelectron spectroscopy and field emission-scanning electron microscope (FE-SEM) analysis. The XRD and FT-IR analysis confirm the formation of monoclinic CuO nanostructures. FE-SEM analysis shows the formation of leave like hierarchical structures of CuO with high uniformity and controlled density. The electrochemical analysis such as cyclic voltammetry and electrochemical impedance spectroscopy studies confirms the pseudo-capacitive behavior of the CuO nanostructures. Our experimental results suggest that CuO nanostructures will create promising applications of CuO toward pseudo-supercapacitors.

  13. Modified Ni-Cu catalysts for ethanol steam reforming

    SciTech Connect (OSTI)

    Dan, M.; Mihet, M.; Almasan, V.; Borodi, G.; Katona, G.; Muresan, L.; Lazar, M. D.

    2013-11-13

    Three Ni-Cu catalysts, having different Cu content, supported on ?-alumina were synthesized by wet co-impregnation method, characterized and tested in the ethanol steam reforming (ESR) reaction. The catalysts were characterized for determination of: total surface area and porosity (N{sub 2} adsorption - desorption using BET and Dollimer Heal methods), Ni surface area (hydrogen chemisorption), crystallinity and Ni crystallites size (X-Ray Diffraction), type of catalytic active centers (Hydrogen Temperature Programmed Reduction). Total surface area and Ni crystallites size are not significantly influenced by the addition of Cu, while Ni surface area is drastically diminished by increasing of Cu concentration. Steam reforming experiments were performed at atmospheric pressure, temperature range 150-350°C, and ethanol - water molar ration of 1 at 30, using Ar as carrier gas. Ethanol conversion and hydrogen production increase by the addition of Cu. At 350°C there is a direct connection between hydrogen production and Cu concentration. Catalysts deactivation in 24h time on stream was studied by Transmission Electron Microscopy (TEM) and temperature-programmed reduction (TPR) on used catalysts. Coke deposition was observed at all studied temperatures; at 150°C amorphous carbon was evidenced, while at 350°C crystalline, filamentous carbon is formed.

  14. Characteristics of Cu stabilized Nb3Al strands with low Cu ratio

    SciTech Connect (OSTI)

    Kikuchi, A.; Yamada, R.; Barzi, E.; Kobayashi, M.; Lamm, M.; Nakagawa, K.; Sasaki, K.; Takeuchi, T.; Turrioni, D.; Zlobin, A.V.; /NIMC, Tsukuba /Fermilab /Hitachi, Tsuchiura Works /KEK, Tsukuba

    2008-12-01

    Characteristics of recently developed F4-Nb{sub 3}Al strand with low Cu ratio are described. The overall J{sub c} of the Nb{sub 3}Al strand could be easily increased by decreasing of the Cu ratio. Although the quench of a pulse-like voltage generation is usually observed in superconducting unstable conductor, the F4 strand with a low Cu ratio of 0.61 exhibited an ordinary critical transition of gradual voltage generation. The F4 strand does not have magnetic instabilities at 4.2 K because of the tantalum interfilament matrix. The overall J{sub c} of the F4 strand achieved was 80-85% of the RRP strand. In the large mechanical stress above 100 MPa, the overall J{sub c} of the F4 strand might be comparable to that of high J{sub c} RRP-Nb{sub 3}Sn strands. The Rutherford cable with a high packing factor of 86.5% has been fabricated using F4 strands. The small racetrack magnet, SR07, was also fabricated by a 14 m F4 cable. The quench current, I{sub q}, of SR07 were obtained 22.4 kA at 4.5 K and 25.2 kA at 2.2 K. The tantalum matrix Nb{sub 3}Al strands are promising for the application of super-cooled high-field magnets as well as 4.2 K operation magnets.

  15. Analysis of the structure, configuration, and sizing of Cu and Cu oxide nanoparticles generated by fs laser ablation of solid target in liquids

    SciTech Connect (OSTI)

    Santillan, J. M. J.; Videla, F. A.; Schinca, D. C.; Scaffardi, L. B.; Fernandez van Raap, M. B.

    2013-04-07

    We report on the analysis of structure, configuration, and sizing of Cu and Cu oxide nanoparticles (Nps) produced by femtosecond (fs) laser ablation of solid copper target in liquids. Laser pulse energy ranged between 500 {mu}J and 50 {mu}J. Water and acetone were used to produce the colloidal suspensions. The study was performed through optical extinction spectroscopy using Mie theory to fit the full experimental spectra, considering free and bound electrons size dependent contributions to the metal dielectric function. Raman spectroscopy and AFM technique were also used to characterize the sample. Considering the possible oxidation of copper during the fabrication process, two species (Cu and Cu{sub 2}O) arranged in two structures (bare core or core-shell) and in two configuration types (Cu-Cu{sub 2}O or Cu{sub 2}O-Cu) were considered for the fitting depending on the laser pulse energy and the surrounding media. For water at high energy, it can be observed that a Cu-Cu{sub 2}O configuration fits the experimental spectra of the colloidal suspension, while for decreasing energy and below a certain threshold, a Cu{sub 2}O-Cu configuration needs to be included for the optimum fit. Both species coexist for energies below 170 {mu}J for water. On the other hand, for acetone at high energy, optimum fit of the full spectrum suggests the presence a bimodal Cu-Cu{sub 2}O core-shell Nps distribution while for decreasing energy and below a 70 {mu}J threshold energy value, Cu{sub 2}O-Cu core-shell Nps must be included, together with the former configuration, for the fit of the full spectrum. We discuss possible reasons for the changes in the structural configuration of the core-shell Nps.

  16. Strangeness Enhancement in Cu+Cu and Au+Au Collisions at \\sqrt{s_{NN}} = 200 GeV

    E-Print Network [OSTI]

    STAR Collaboration; H. Agakishiev; M. M. Aggarwal; Z. Ahammed; A. V. Alakhverdyants; I. Alekseev; J. Alford; B. D. Anderson; C. D. Anson; D. Arkhipkin; G. S. Averichev; J. Balewski; L. S. Barnby; D. R. Beavis; N. K. Behera; R. Bellwied; M. J. Betancourt; R. R. Betts; A. Bhasin; A. K. Bhati; H. Bichsel; J. Bielcik; J. Bielcikova; B. Biritz; L. C. Bland; W. Borowski; J. Bouchet; E. Braidot; A. V. Brandin; A. Bridgeman; S. G. Brovko; E. Bruna; S. Bueltmann; I. Bunzarov; T. P. Burton; X. Z. Cai; H. Caines; M. Calderón de la Barca Sánchez; D. Cebra; R. Cendejas; M. C. Cervantes; Z. Chajecki; P. Chaloupka; S. Chattopadhyay; H. F. Chen; J. H. Chen; J. Y. Chen; L. Chen; J. Cheng; M. Cherney; A. Chikanian; K. E. Choi; W. Christie; P. Chung; M. J. M. Codrington; R. Corliss; J. G. Cramer; H. J. Crawford; S. Dash; A. Davila Leyva; L. C. De Silva; R. R. Debbe; T. G. Dedovich; A. A. Derevschikov; R. Derradi de Souza; L. Didenko; P. Djawotho; S. M. Dogra; X. Dong; J. L. Drachenberg; J. E. Draper; J. C. Dunlop; L. G. Efimov; M. Elnimr; J. Engelage; G. Eppley; M. Estienne; L. Eun; O. Evdokimov; R. Fatemi; J. Fedorisin; R. G. Fersch; P. Filip; E. Finch; V. Fine; Y. Fisyak; C. A. Gagliardi; D. R. Gangadharan; A. Geromitsos; F. Geurts; P. Ghosh; Y. N. Gorbunov; A. Gordon; O. Grebenyuk; D. Grosnick; S. M. Guertin; A. Gupta; W. Guryn; B. Haag; O. Hajkova; A. Hamed; L-X. Han; J. W. Harris; J. P. Hays-Wehle; M. Heinz; S. Heppelmann; A. Hirsch; E. Hjort; G. W. Hoffmann; D. J. Hofman; B. Huang; H. Z. Huang; T. J. Humanic; L. Huo; G. Igo; P. Jacobs; W. W. Jacobs; P. G. Jones; C. Jena; F. Jin; J. Joseph; E. G. Judd; S. Kabana; K. Kang; J. Kapitan; K. Kauder; H. Ke; D. Keane; A. Kechechyan; D. Kettler; D. P. Kikola; J. Kiryluk; A. Kisiel; V. Kizka; A. G. Knospe; D. D. Koetke; T. Kollegger; J. Konzer; I. Koralt; L. Koroleva; W. Korsch; L. Kotchenda; V. Kouchpil; P. Kravtsov; K. Krueger; M. Krus; L. Kumar; P. Kurnadi; M. A. C. Lamont; J. M. Landgraf; S. LaPointe; J. Lauret; A. Lebedev; R. Lednicky; J. H. Lee; W. Leight; M. J. LeVine; C. Li; L. Li; N. Li; W. Li; X. Li; X. Li; Y. Li; Z. M. Li; M. A. Lisa; F. Liu; H. Liu; J. Liu; T. Ljubicic; W. J. Llope; R. S. Longacre; W. A. Love; Y. Lu; E. V. Lukashov; X. Luo; G. L. Ma; Y. G. Ma; D. P. Mahapatra; R. Majka; O. I. Mall; L. K. Mangotra; R. Manweiler; S. Margetis; C. Markert; H. Masui; H. S. Matis; Yu. A. Matulenko; D. McDonald; T. S. McShane; A. Meschanin; R. Milner; N. G. Minaev; S. Mioduszewski; A. Mischke; M. K. Mitrovski; B. Mohanty; M. M. Mondal; B. Morozov; D. A. Morozov; M. G. Munhoz; M. Naglis; B. K. Nandi; T. K. Nayak; P. K. Netrakanti; J. M. Nelson; L. V. Nogach; S. B. Nurushev; G. Odyniec; A. Ogawa; K. Oh; A. Ohlson; V. Okorokov; E. W. Oldag; D. Olson; M. Pachr; B. S. Page; S. K. Pal; Y. Pandit; Y. Panebratsev; T. Pawlak; H. Pei; T. Peitzmann; C. Perkins; W. Peryt; S. C. Phatak; P. Pile; M. Planinic; M. A. Ploskon; J. Pluta; D. Plyku; N. Poljak; A. M. Poskanzer; B. V. K. S. Potukuchi; C. B. Powell; D. Prindle; C. Pruneau; N. K. Pruthi; P. R. Pujahari; J. Putschke; H. Qiu; R. Raniwala; S. Raniwala; R. L. Ray; R. Redwine; R. Reed; H. G. Ritter; J. B. Roberts; O. V. Rogachevskiy; J. L. Romero; A. Rose; L. Ruan; J. Rusnak; N. R. Sahoo; S. Sakai; I. Sakrejda; T. Sakuma; S. Salur; J. Sandweiss; E. Sangaline; A. Sarkar; J. Schambach; R. P. Scharenberg; A. M. Schmah; T. R. Schuster; J. Seele; J. Seger; I. Selyuzhenkov; P. Seyboth; E. Shahaliev; M. Shao; M. Sharma; S. S. Shi; Q. Y. Shou; E. P. Sichtermann; F. Simon; R. N. Singaraju; M. J. Skoby; N. Smirnov; H. M. Spinka; B. Srivastava; T. D. S. Stanislaus; D. Staszak; S. G. Steadman; J. R. Stevens; R. Stock; M. Strikhanov; B. Stringfellow; A. A. P. Suaide; M. C. Suarez; N. L. Subba; M. Sumbera; X. M. Sun; Y. Sun; Z. Sun; B. Surrow; D. N. Svirida; T. J. M. Symons; A. Szanto de Toledo; J. Takahashi; A. H. Tang; Z. Tang; L. H. Tarini; T. Tarnowsky; D. Thein; J. H. Thomas; J. Tian; A. R. Timmins; D. Tlusty; M. Tokarev; V. N. Tram; S. Trentalange; R. E. Tribble; P. Tribedy; O. D. Tsai; T. Ullrich; D. G. Underwood; G. Van Buren; G. van Nieuwenhuizen; J. A. Vanfossen Jr.; R. Varma; G. M. S. Vasconcelos; A. N. Vasiliev; F. Videbæk; Y. P. Viyogi; S. Vokal; M. Wada; M. Walker; F. Wang; G. Wang; H. Wang; J. S. Wang; Q. Wang; X. L. Wang; Y. Wang; G. Webb; J. C. Webb; G. D. Westfall; C. Whitten Jr.; H. Wieman; S. W. Wissink; R. Witt; W. Witzke; Y. F. Wu; Z. Xiao; W. Xie; H. Xu; N. Xu; Q. H. Xu; W. Xu; Y. Xu; Z. Xu; L. Xue; Y. Yang; P. Yepes; K. Yip; I-K. Yoo; M. Zawisza; H. Zbroszczyk; W. Zhan; J. B. Zhang; S. Zhang; W. M. Zhang; X. P. Zhang; Y. Zhang; Z. P. Zhang; J. Zhao; C. Zhong; W. Zhou; X. Zhu; Y. H. Zhu; R. Zoulkarneev; Y. Zoulkarneeva

    2012-01-04

    We report new STAR measurements of mid-rapidity yields for the $\\Lambda$, $\\bar{\\Lambda}$, $K^{0}_{S}$, $\\Xi^{-}$, $\\bar{\\Xi}^{+}$, $\\Omega^{-}$, $\\bar{\\Omega}^{+}$ particles in Cu+Cu collisions at \\sNN{200}, and mid-rapidity yields for the $\\Lambda$, $\\bar{\\Lambda}$, $K^{0}_{S}$ particles in Au+Au at \\sNN{200}. We show that at a given number of participating nucleons, the production of strange hadrons is higher in Cu+Cu collisions than in Au+Au collisions at the same center-of-mass energy. We find that aspects of the enhancement factors for all particles can be described by a parameterization based on the fraction of participants that undergo multiple collisions.

  17. Cu--Pd--M hydrogen separation membranes

    SciTech Connect (OSTI)

    Do{hacek over }an, Omer N; Gao, Michael C; Young, Rongxiang Hu; Tafen, De Nyago

    2013-12-17

    The disclosure provides an H2 separation membrane comprised of an allow having the composition Cu.Sub.(100-x-y)Pd.sub.xM.sub.y, where x is from about 35 to about 50 atomic percent and where y is from greater than 0 to about 20 atomic percent, and where M consists of magnesium, yttrium, aluminum, titanium, lanthanum, or combinations thereof. The M elements act as strong stabilizers for the B2 phase of the allow, and extend the critical temperature of the alloy for a given hydrogen concentration and pressure. Due to the phase stabilization and the greater temperature range over which a B2 phase can be maintained, the allow is well suited for service as a H2 separation membrane, particularly when applicable conditions are established or cycled above about 600.degree. C. over the course of expected operations. In certain embodiments, the B2 phase comprises at least 60 estimated volume percent of the allow at a steady-state temperature of 400.degree. C. The B2 phase stability is experimentally validated through HT-XRD.

  18. Rich Davies- Biography

    Broader source: Energy.gov [DOE]

    As the Project Lifecycle Steward at PNNL, he has provided leadership and management to more effectively and efficiently enable the conduct of research and development.

  19. UNIVERSALITY IS Martin Davis

    E-Print Network [OSTI]

    O F 1 #12;Alan Turing's universal machine: Code of M Input to M It provides a model of a memory amazing coincidence I have ever encountered." #12;Alan Turing 1947 (Address delivered to the London

  20. Davis Field Water Tower

    E-Print Network [OSTI]

    Erway, Jennifer

    Reynolds Library Starbucks 7A. Wilson Wing 8. Olin Physical Laboratory 9. Salem Hall 10. Winston Hall 11

  1. Davis Castro Californian

    E-Print Network [OSTI]

    California at Berkeley, University of

    69 77 79 77A 31 72 Strawberry Entrance Grizzly Peak Entrance National Center for Electron Microscopy Field House Strawberry Softball Field Haas Clubhouse Strawberry Canyon Recreational Area Strawberry Village Fenwick Weavers Village StrawberryCreekNort h Fork Straw b erry Creek South Fork Memorial Glade

  2. Davis- Gary Hall & Council 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    JOYCE GARY ' ', l TEGHNI'&UES OE' GHARAGTERI ZIN" CHARLEY IN CHARLEY IS l~lY DARLING, AllANDA Il'1 'Tl'E l'lOONLIGHT, AN D TABITHA IN A I~'EAREUL JOY A Thesfs VIRGINIA LEE COl/EN Approved as to style and content by: hairman of Committee Heed.... of Department Hem r December 1972 4 v' 4 2 F '~ Joyce Gary's '1'echnioues of Characterizing Charley in Cherie Is H Darlin, Amends in '1'he Hoonli. ht and Tabitha in A Pearful Jo . (Dece!!!ber 197' j Virginia Lee Cowen, B. A. , Pan American University...

  3. University of California, Davis

    E-Print Network [OSTI]

    Ullrich, Paul

    , SANCTIONS, & LAWS 11 University Policy and Sanctions 11 Loss of Financial Aid for Conviction Involving Possession/Sale of Illegal Drugs 11 Federal Laws and Sanctions 12 California Laws and Sanctions 12 Sacramento

  4. Stephen Bolt Adam Davis

    E-Print Network [OSTI]

    Bowen, James D.

    impact wild life Geothermal can release superheated water #12;Environmental Impacts Greenhouse Gas generated in France is nuclear power ·The decay of a single U-235 atom releases approximately 200 Me% of Uranium found on earth ·Uranium 235 makes up 0.7% ·Uranium 235 has the ability to undergo induced fission

  5. davis-99.PDF

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorkingLos AlamosSimulation Initiative798/%2A encrosscutting2david

  6. The mission of the UC Davis Solar Collaborative is simple: to find ways to make solar cells more efficient. Even in theory, the efficiency of conventional solar cells is limited to a disappointing 31%. However, this limit is based

    E-Print Network [OSTI]

    solar photon excites only a single electron. A recent breakthrough showed that one photon may exciteMission The mission of the UC Davis Solar Collaborative is simple: to find ways to make solar cells more efficient. Even in theory, the efficiency of conventional solar cells is limited

  7. "Leveraging University Expertise to Inform Better Policy" The UC Davis Policy Institute for Energy, Environment and the Economy is part of a bold new campus-wide initiative to

    E-Print Network [OSTI]

    California at Davis, University of

    and Clean Energy in California Thank you for attending the Plug-in Electric Vehicles and Clean Energy in California forum and reception. The UC Davis Policy Institute for Energy, Environment and the Economy, the UC the opportunities for linking Plug-in Electric Vehicles and Clean Energy in California. Driving a plug-in electric

  8. Rebecca Harding Davis sets her story of industrial poverty in an iron mill in a town such asWheeling,WestVirginia, represented here in Charles Graham's 1890 rendering.

    E-Print Network [OSTI]

    Martinez, Tony R.

    Rebecca Harding Davis sets her story of industrial poverty in an iron mill in a town such as poverty of the middle class."2 Coppelia Kahn, professor of English and gender studies at Brown University, probably Christian answer" to the poverty of the time.3 Although both critics have strong arguments, "Life

  9. Distributed Energy Resource Optimization Using a Software as Service (SaaS) Approach at the University of California, Davis Campus

    SciTech Connect (OSTI)

    Michael, Stadler; Marnay, Chris; Donadee, Jon; Lai, Judy; Mégel, Olivier; Bhattacharya, Prajesh; Siddiqui, Afzal

    2011-02-06

    Together with OSIsoft LLC as its private sector partner and matching sponsor, the Lawrence Berkeley National Laboratory (Berkeley Lab) won an FY09 Technology Commercialization Fund (TCF) grant from the U.S. Department of Energy. The goal of the project is to commercialize Berkeley Lab's optimizing program, the Distributed Energy Resources Customer Adoption Model (DER-CAM) using a software as a service (SaaS) model with OSIsoft as its first non-scientific user. OSIsoft could in turn provide optimization capability to its software clients. In this way, energy efficiency and/or carbon minimizing strategies could be made readily available to commercial and industrial facilities. Specialized versions of DER-CAM dedicated to solving OSIsoft's customer problems have been set up on a server at Berkeley Lab. The objective of DER-CAM is to minimize the cost of technology adoption and operation or carbon emissions, or combinations thereof. DER-CAM determines which technologies should be installed and operated based on specific site load, price information, and performance data for available equipment options. An established user of OSIsoft's PI software suite, the University of California, Davis (UCD), was selected as a demonstration site for this project. UCD's participation in the project is driven by its motivation to reduce its carbon emissions. The campus currently buys electricity economically through the Western Area Power Administration (WAPA). The campus does not therefore face compelling cost incentives to improve the efficiency of its operations, but is nonetheless motivated to lower the carbon footprint of its buildings. Berkeley Lab attempted to demonstrate a scenario wherein UCD is forced to purchase electricity on a standard time-of-use tariff from Pacific Gas and Electric (PG&E), which is a concern to Facilities staff. Additionally, DER-CAM has been set up to consider the variability of carbon emissions throughout the day and seasons. Two distinct analyses of value to UCD are possible using this approach. First, optimal investment choices for buildings under the two alternative objectives can be derived. Second, a week-ahead building operations forecaster has been written that executes DER-CAM to find an optimal operating schedule for buildings given their expected building energy services requirements, electricity prices, and local weather. As part of its matching contribution, OSIsoft provided a full implementation of PI and a server to install it on at Berkeley Lab. Using the PItoPI protocol, this gives Berkeley Lab researchers direct access to UCD's PI data base. However, this arrangement is in itself inadequate for performing optimizations. Additional data not included in UCD's PI database would be needed and the campus was not able to provide this information. This report details the process, results, and lessons learned of this commercialization project.

  10. Thermoelectric properties of chalcopyrite type CuGaTe{sub 2} and chalcostibite CuSbS{sub 2}

    SciTech Connect (OSTI)

    Kumar Gudelli, Vijay; Kanchana, V., E-mail: kanchana@iith.ac.in [Department of Physics, Indian Institute of Technology Hyderabad, Ordnance Factory Estate, Yeddumailaram 502 205, Andhra Pradesh (India); Vaitheeswaran, G. [Advanced Centre of Research in High Energy Materials (ACRHEM), University of Hyderabad, Prof. C. R. Rao Road, Gachibowli, Hyderabad 500 046, Andhra Pradesh (India); Svane, A.; Christensen, N. E. [Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)

    2013-12-14

    Electronic and transport properties of CuGaTe{sub 2}, a hole-doped ternary copper based chalcopyrite type semiconductor, are studied using calculations within the Density Functional Theory and solving the Boltzmann transport equation within the constant relaxation time approximation. The electronic band structures are calculated by means of the full-potential linear augmented plane wave method, using the Tran-Blaha modified Becke-Johnson potential. The calculated band gap of 1.23?eV is in agreement with the experimental value of 1.2?eV. The carrier concentration- and temperature dependent thermoelectric properties of CuGaTe{sub 2} are derived, and a figure of merit of zT?=?1.69 is obtained at 950?K for a hole concentration of 3.7·10{sup 19}?cm{sup ?3}, in agreement with a recent experimental finding of zT?=?1.4, confirming that CuGaTe{sub 2} is a promising material for high temperature thermoelectric applications. The good thermoelectric performance of p-type CuGaTe{sub 2} is associated with anisotropic transport from a combination of heavy and light bands. Also for CuSbS{sub 2} (chalcostibite), a better performance is obtained for p-type than for n-type doping. The variation of the thermopower as a function of temperature and concentration suggests that CuSbS{sub 2} will be a good thermoelectric material at low temperatures, similarly to the isostructural CuBiS{sub 2} compound.

  11. Aging Effects on the Microstructure, Surface Characteristics and Wettability of Cu Pretinned with Sn-Pb Solders

    E-Print Network [OSTI]

    Linch, H.S.

    2010-01-01

    Chairman, "Accelerated Aging for Solderability EvaluationsA Survey of Accelerated Aging Techniques for SolderableJ. K. ,andG. J. Davis,"Aging Solder hickness Solder lloy T

  12. Three approaches to economical photovoltaics: conformal Cu2S, organic luminescent films, and PbSe nanocrystal superlattices

    E-Print Network [OSTI]

    Carbone, Ian Anthony

    2013-01-01

    approaches to economical photovoltaics: conformal Cu 2 S,routes to more efficient photovoltaics using conformal Cu 2on grid-parity. Progress in Photovoltaics: Research and

  13. Elucidating efficiency losses in cuprous oxide (Cu?O) photovoltaics and identifying strategies for efficiency improvement

    E-Print Network [OSTI]

    Brandt, Riley Eric

    2013-01-01

    In this thesis, I fabricated and characterized a series of thin-film cuprous oxide (Cu?O) photovoltaic devices. I constructed several different device designs, using sputtered and electrochemically deposited Cu?O. ...

  14. Bridging the Pressure Gap in Water and Hydroxyl Chemistry on Metal Surfaces: the Cu(110) case

    E-Print Network [OSTI]

    2007-01-01

    the Pressure Gap in Water and Hydroxyl Chemistry on Metalresults on the water and hydroxyl chemistry on Cu(110) whichhave studied the water and hydroxyl chemistry on Cu(110) at

  15. High Chalcocite Cu2S: A Solid-Liquid Hybrid Phase (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    High Chalcocite Cu2S: A Solid-Liquid Hybrid Phase Prev Next Title: High Chalcocite Cu2S: A Solid-Liquid Hybrid Phase Authors: Wang, Lin-Wang Publication Date: 2012-02-24 OSTI...

  16. Distribution and Chemical State of Cu-rich Clusters in Silicon: Preprint

    SciTech Connect (OSTI)

    Buonassisi, T.; Marcus, M. A.; Istratov, A. A.; Heuer, M.; Ciszek, T. F.; Lai, B.; Cai, Z.; Weber, E. R.

    2004-08-01

    the chemical state and distribution of Cu-rich clusters were determined in four different silicon-based materials with varying contamination pathways and degrees of oxygen concentration, including as-grown multicrystalline silicon. In all four samples, Cu3Si was the only chemical state observed. Cu3Si clusters were observed at structural defects within all four materials; XBIC measurements revealed that the presence of Cu3Si corresponds to increased recombination activity. Oxidized Cu compounds are not likely to form in silicon. The +1 eV edge shift in the -XAS absorption spectrum of Cu3Si relative to Cu metal is believed to be an indication of a degree of covalent bonding between Cu atoms and their silicon neighbors.

  17. Distinct oxygen hole doping in different layers of Sr?CuO4-?/La?CuO? superlattices

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Smadici, S.; Lee, J. C. T.; Rusydi, A.; Logvenov, G.; Bozovic, I.; Abbamonte, P.

    2012-03-28

    X-ray absorption in Sr?CuO4-?/La?CuO? (SCO/LCO) superlattices shows a variable occupation with doping of a hole state different from holes doped for x?xoptimal in bulk La2-xSrxCuO? and suggests that this hole state is on apical oxygen atoms and polarized in the a-b plane. Considering the surface reflectivity gives a good qualitative description of the line shapes of resonant soft x-ray scattering. The interference between superlattice and surface reflections was used to distinguish between scatterers in the SCO and the LCO layers, with the two hole states maximized in different layers of the superlattice.

  18. High strength-high conductivity Cu--Fe composites produced by powder compaction/mechanical reduction

    DOE Patents [OSTI]

    Verhoeven, John D. (Ames, IA); Spitzig, William A. (Ames, IA); Gibson, Edwin D. (Ames, IA); Anderson, Iver E. (Ames, IA)

    1991-08-27

    A particulate mixture of Cu and Fe is compacted and mechanically reduced to form an "in-situ" Cu-Fe composite having high strength and high conductivity. Compaction and mechanical reduction of the particulate mixture are carried out at a temperature and time at temperature selected to avoid dissolution of Fe into the Cu matrix particulates to a harmful extent that substantially degrades the conductivity of the Cu-Fe composite.

  19. High strength-high conductivity Cu-Fe composites produced by powder compaction/mechanical reduction

    DOE Patents [OSTI]

    Verhoeven, J.D.; Spitzig, W.A.; Gibson, E.D.; Anderson, I.E.

    1991-08-27

    A particulate mixture of Cu and Fe is compacted and mechanically reduced to form an ''in-situ'' Cu-Fe composite having high strength and high conductivity. Compaction and mechanical reduction of the particulate mixture are carried out at a temperature and time at temperature selected to avoid dissolution of Fe into the Cu matrix particulates to a harmful extent that substantially degrades the conductivity of the Cu-Fe composite. 5 figures.

  20. Isothermal stress relaxation in electroplated Cu films. I. Mass transport measurements

    E-Print Network [OSTI]

    Huang, Rui

    Isothermal stress relaxation in electroplated Cu films. I. Mass transport measurements Dongwen Gan-boundary mass transport measured from isothermal stress relaxation in electroplated Cu thin films. Thermal stresses in electroplated Cu films with and without passivation, subjected to thermal cycling

  1. Kinetics and Equilibrium of Gas Adsorption on RPM1-Co and Cu-BTC

    E-Print Network [OSTI]

    Li, Jing

    Kinetics and Equilibrium of Gas Adsorption on RPM1-Co and Cu-BTC Metal-Organic Frameworks and equilibrium adsorption measurements for two gases, CF4 and Ar, on RPM1-Co and Cu-BTC metal-organic framework.597) on both adsorbents. The results show that both gases behave differently on Cu-BTC from the way they do

  2. Cationanion versus cationframework interactions in sodalites: First-principles study of model Cu-exchanged sodalites

    E-Print Network [OSTI]

    Selloni, Annabella

    as catalysts for the reduction of NOx compounds.6­8 In this respect, Cu- exchanged sodalites may represent for silver-exchanged sodalites. The reduction of the lattice parameter is accompanied by the formation of Cu ions per cage, resulting in a simultaneous reduction of Cu­framework distances. For fully

  3. Strength of joints produced by transient liquid phase bonding in the CuSn system

    E-Print Network [OSTI]

    Zok, Frank

    ; Intermetallic phases; Electron beam methods; Fracture; Toughness 1. Introduction Transient liquid phase (TLP focuses on the strength and toughness of joints produced by transient liquid phase (TLP) bonding in the Cu the d-phase and a dispersion of ductile (Cu) particles, and a uniform Cu solid solution. Notched

  4. Effects of annealing on antiwear and antibacteria behaviors of TaN-Cu nanocomposite thin films

    SciTech Connect (OSTI)

    Hsieh, J. H.; Cheng, M. K.; Chang, Y. K.; Li, C.; Chang, C. L.; Liu, P. C.

    2008-07-15

    TaN-Cu nanocomposite films were deposited by reactive cosputtering on Si and tool steel substrates. The films were then annealed using rapid thermal annealing (RTA) at 400 deg. C for 2, 4, and 8 min, respectively, to induce the nucleation and growth of Cu particles in TaN matrix and on film surface. Field emission scanning electron microscopy was applied to characterize Cu nanoparticles emerged on the surface of TaN-Cu thin films. The effects of annealing on the antiwear and antibacterial properties of these films were studied. The results reveal that annealing by RTA can cause Cu nanoparticles to form on the TaN surface. Consequently, the tribological behaviors, as well as the antibacterial behavior may vary depending on particle size, particle distribution, and total exposed Cu amount. For the samples with large Cu particles, the reduction of averaged friction and wear rate is obvious. Apparently, it is due to the smeared Cu particles adhered onto the wear tracks. This Cu layer may act as a solid lubricant. From the antibacterial testing results, it is found that both Cu particle size and total exposed Cu amount are critical in making short-term antibacterial effect. Overall, all the annealed TaN-Cu samples can reach >99% antibacterial efficiency in 24 h, with respect to uncoated Si substrate.

  5. Women and Physics Laura McCu!ough

    E-Print Network [OSTI]

    Wu, Mingshen

    ;Getting women into physics Strong case for encouraging women in physics and STEM fields in general NeedWomen and Physics Laura McCu!ough University of Wisconsin-Stout Physics Department Purdue University April 2015 #12;Overview Participation of women in physics Issues faced at different levels What

  6. CU Science Education Seminar Series Assessment & Improvement of Problem Solving

    E-Print Network [OSTI]

    Colorado at Boulder, University of

    CU Science Education Seminar Series Assessment & Improvement of Problem Solving Problem solving problem solving abilities, and many students never develop competence. A great deal of effort has been devoted to developing heuristics to help students solve problems, but there is little evidence

  7. Local structure order in Pd??Cu?Si?? liquid

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yue, G. Q.; Iowa State Univ., Ames, IA; Zhang, Y.; Sun, Y.; Shen, B.; Dong, F.; Wang, Z. Y.; Zhang, R. J.; Zheng, Y. X.; Kramer, M. J.; et al

    2015-02-05

    The short-range order (SRO) in Pd??Cu?Si?? liquid was studied by high energy x-ray diffraction and ab initio molecular dynamics (MD) simulations. The calculated pair correlation functions at different temperatures agree well with the experimental results. The partial pair correlation functions from ab intio MD simulations indicate that Si atoms prefer to be uniformly distributed while Cu atoms tend to aggregate. By performing structure analysis using Honeycutt-Andersen index, Voronoi tessellation, and atomic cluster alignment method, we show that the icosahedron and face-centered cubic SRO increase upon cooling. The dominant SRO is the Pd-centered Pd?Si? motif, namely the structure of which motifmore »is similar to the structure of Pd-centered clusters in the Pd?Si? crystal. The study further confirms the existence of trigonal prism capped with three half-octahedra that is reported as a structural unit in Pd-based amorphous alloys. The majority of Cu-centered clusters are icosahedra, suggesting that the presence of Cu is benefit to promote the glass forming ability.« less

  8. The Current Status of Women Laura McCu!ough

    E-Print Network [OSTI]

    Wu, Mingshen

    physics; 33% of females** 4.1% of males and 2.4% of females took AP/IB physics** *http the Physics Enterprise in Universities and National Laboratories. APS Workshop, May 6-8, 2007. AvailableThe Current Status of Women in Physics Laura McCu!ough Physics Department University of Wisconsin

  9. An in-situ phosphorus source for the synthesis of Cu3P and the subsequent conversion to Cu3PS4 nanoparticle clusters

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Sheets, Erik J.; Stach, Eric A.; Yang, Wei -Chang; Balow, Robert B.; Wang, Yunjie; Walker, Bryce C.; Agrawal, Rakesh

    2015-09-20

    The search for alternative earth abundant semiconducting nanocrystals for sustainable energy applications has brought forth the need for nanoscale syntheses beyond bulk synthesis routes. Of particular interest are metal phosphides and derivative I-V-VI chalcogenides including copper phosphide (Cu3P) and copper thiophosphate (Cu3PS4). Herein, we report a one-pot, solution-based synthesis of Cu3P nanocrystals utilizing an in-situ phosphorus source: phosphorus pentasulfide (P2S5) in trioctylphosphine (TOP). By injecting this phosphorus source into a copper solution in oleylamine (OLA), uniform and size controlled Cu3P nanocrystals with a phosphorous-rich surface are synthesized. The subsequent reaction of the Cu3P nanocrystals with decomposing thiourea forms nanoscale Cu3PS4more »particles having p-type conductivity and an effective optical band gap of 2.36 eV.« less

  10. NO Chemisorption on Cu/SSZ-13: a Comparative Study from Infrared Spectroscopy and DFT Calculations

    SciTech Connect (OSTI)

    Zhang, Renqin; McEwen, Jean-Sabin; Kollar, Marton; Gao, Feng; Wang, Yilin; Szanyi, Janos; Peden, Charles HF

    2014-11-07

    The locations and energies of Cu ions in a Cu/SSZ-13 zeolite catalyst were investigated by density functional theory (DFT) calculations. For 'naked' Cu2+ ions (i.e., Cu2+ ions with no ligands in their coordination spheres other than zeolite lattice oxygen atoms), the more energetically favorable sites are within a 6-membered ring. However, with the presence of various adsorbates, the energy difference between 6- and 8-membered ring locations greatly diminishes. Specifically, Cu2+ ions are substantially stabilized by -OH ligands (as [CuII(OH)]+), making the extra-framework sites in an 8-membered ring energetically more favorable than 6-membered ring sites. Under fully dehydrated high vacuum conditions with different Si/Al and Cu/Al ratios, three chemisorbed NO species coexist upon exposure of NO to Cu/SSZ-13: NO+, Cu2+-NO and Cu+-NO. The relative signal intensities for these bands vary greatly with Si/Al ratios. The vibrational frequency of chemisorbed NO was found to be very sensitive to the location of Cu2+ ions. On the one hand, with the aid from DFT calculations, the nature for these vibrations can be assigned in detail. On the other hand, the relative intensities for various Cu2+-NO species provide a good measure of the nature of Cu2+ ions as functions of Si/Al and Cu/Al ratios and the presence of humidity. These new findings cast doubt on the generally accepted proposal that only Cu2+ ions located in 6-membered rings are catalytically active for NH3-SCR.

  11. Energy and system size dependence of ?meson production in Cu+Cu and Au+Au collisions

    E-Print Network [OSTI]

    STAR Collaboration

    2008-10-28

    We study the beam-energy and system-size dependence of \\phi meson production (using the hadronic decay mode \\phi -- K+K-) by comparing the new results from Cu+Cu collisions and previously reported Au+Au collisions at \\sqrt{s_NN} = 62.4 and 200 GeV measured in the STAR experiment at RHIC. Data presented are from mid-rapidity (|y|energy, the transverse momentum distributions for \\phi mesons are observed to be similar in yield and shape for Cu+Cu and Au+Au colliding systems with similar average numbers of participating nucleons. The \\phi meson yields in nucleus-nucleus collisions, normalised by the average number of participating nucleons, are found to be enhanced relative to those from p+p collisions with a different trend compared to strange baryons. The enhancement for \\phi mesons is observed to be higher at \\sqrt{s_NN} = 200 GeV compared to 62.4 GeV. These observations for the produced \\phi(s\\bar{s}) mesons clearly suggest that, at these collision energies, the source of enhancement of strange hadrons is related to the formation of a dense partonic medium in high energy nucleus-nucleus collisions and cannot be alone due to canonical suppression of their production in smaller systems.

  12. Ethyl iodide decomposition on Cu(1 1 1) and Cu(2 2 1) Dougyong Sung, Andrew J. Gellman *

    E-Print Network [OSTI]

    Gellman, Andrew J.

    of Chemical Engineering, Carnegie Mellon University, 5000 Forbes Ave., Pittsburgh, PA 15213, USA Received 18 and adsorbed iodine atoms. The ethyl groups decompose by b-hydride elimination to desorb as ethylene leaving adsorbed iodine atoms. The kinetics of b-hydride elimination on the Cu(2 2 1) surface are similar to those

  13. Long-term leaching test of incinerator bottom ash: Evaluation of Cu partition

    SciTech Connect (OSTI)

    Lin, Cheng-Fang Wu, Chung-Hsin; Liu, Yen-Chiun

    2007-07-01

    Two types of leaching tests were performed on the bottom ash from municipal solid waste incinerators. A short-term batch test specified by the America Nuclear Society (ANS) and long-term column tests with acetic acid (pH 5.2) as leaching solution were used to evaluate copper leachability. The Cu leaching after the 5-d ANS test is about 1% of the original Cu content of 5300 mg/kg. Upon addition of a stabilizing agent, the Cu leaching quantity is reduced; the extent of reduction depends on the type of chemical used (phosphate, carbonate and sulfide). The 1.6% Na{sub 2}S addition showed negligible Cu leaching, and Na{sub 2}S was, therefore, used in subsequent column tests. The 30-d column test indicates a steady increase of Cu leaching amount with time and reaches about 1.5% of the original Cu content after 30 d. A 180-d column test further increased the Cu leaching to about 5.1% of the original Cu content, whereas no appreciable Cu leaching was found with the addition of 1.6% Na{sub 2}S. A sequential extraction was conducted on the raw ash, ash with the addition of Na{sub 2}S and the residue ash after 30 d of operation to characterize Cu affinity for different solid fractions. The data were used to evaluate the fate of Cu through these interactions.

  14. Utility of reactively sputtered CuN{sub x} films in spintronics devices

    SciTech Connect (OSTI)

    Fang Yeyu; Persson, J.; Zha, C.; Willman, J.; Miller, Casey W.; Aakerman, Johan

    2012-04-01

    We have studied nitrified copper (CuN{sub x}) thin films grown by reactive sputtering in the context of spintronic devices. The Ar-to-N{sub 2} flow ratio enables tunability of the electrical resistivity and surface roughness of the CuN{sub x} films, with the former increasing to nearly 20 times that of Cu, and the latter reduced to the atomic scale. Incorporating this into a Ta/CuN{sub x}/Ta seed stack for spin valves improves the current-in-plane (CIP) magnetoresistance; maximum magnetoresistance results with CuN{sub x} seed layer and Cu interlayer. Finally, finite element modeling results are presented that suggest the use of CuN{sub x} in nanocontact spin torque oscillators can enhance current densities by limiting the current spread through the device. This may positively impact threshold currents, power requirements, and device reliability.

  15. Effect of CNTs dispersion on the thermal and mechanical properties of Cu/CNTs nanocomposites

    SciTech Connect (OSTI)

    Muhsan, Ali Samer, E-mail: alisameer2007@gmail.com, E-mail: faizahmad@petronas.com.my; Ahmad, Faiz, E-mail: alisameer2007@gmail.com, E-mail: faizahmad@petronas.com.my; Yusoff, Puteri Sri Melor Megat Bt, E-mail: puteris@petronas.com.my [Department of Mechanical Engineering, Universiti Teknologi PETRONAS (UTP) (Malaysia); Mohamed, Norani M., E-mail: noranimuti-mohamed@petronas.com.my [Centre of Innovative Nanostructures and Nanodevices (COINN), UTP (Malaysia); Raza, M. Rafi, E-mail: rafirazamalik@gmail.com [Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor (Malaysia)

    2014-10-24

    Modified technique of metal injection molding (MIM) was used to fabricate multiwalled carbon nanotube (CNT) reinforced Cu nanocomposites. The effect of adding different amount of CNTs (0-10 vol.%) on the thermal and mechanical behaviour of the fabricated nanocomposites is presented. Scanning electron microscope analysis revealed homogenous dispersion of CNTs in Cu matrices at different CNTs contents. The experimentally measured thermal conductivities of Cu/CNTs nanocomposites showed extraordinary increase (76% higher than pure sintered Cu) with addition of 10 vol.% CNTs. As compared to the pure sintered Cu, increase in modulus of elasticity (Young's modulus) of Cu/CNTs nanocomposites sintered at 1050°C for 2.5 h was measured to be 48%. However, in case of 7.5 vol.% CNTs, Young's modulus was increased significantly about 51% compared to that of pure sintered Cu.

  16. Comparative Study of the Defect Point Physics and Luminescence of the Kesterites Cu2ZnSnS4 and Cu2ZnSnSe4 and Chalcopyrite Cu(In,Ga)Se2: Preprint

    SciTech Connect (OSTI)

    Romero, M. J.; Repins, I.; Teeter, G.; Contreras, M.; Al-Jassim, M.; Noufi, R.

    2012-08-01

    In this contribution, we present a comparative study of the luminescence of the kesterites Cu2ZnSnS4 (CZTS) and Cu2ZnSnSe4 (CZTSe) and their related chalcopyrite Cu(In,Ga)Se2 (CIGSe). Luminescence spectroscopy suggests that the electronic properties of Zn-rich, Cu-poor kesterites (both CZTS and CZTSe) and Cu-poor CIGSe are dictated by fluctuations of the electrostatic and chemical potentials. The large redshift in the luminescence of grain boundaries in CIGSe, associated with the formation of a neutral barrier is clearly observed in CZTSe, and, to some extent, in CZTS. Kesterites can therefore replicate the fundamental electronic properties of CIGSe.

  17. Effects of the Cu off-stoichiometry on transport properties of wide gap p-type semiconductor, layered oxysulfide LaCuSO

    SciTech Connect (OSTI)

    Goto, Yosuke, E-mail: ygoto@z8.keio.jp; Tanaki, Mai; Okusa, Yuki; Matoba, Masanori; Kamihara, Yoichi [Department of Applied Physics and Physico-Informatics, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Yokohama 223-8522 (Japan); Shibuya, Taizo; Yasuoka, Kenji [Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, Yokohama 223-8522 (Japan)

    2014-07-14

    Layered oxysulfide LaCu{sub 1?x}SO (x?=?0–0.03) was prepared to elucidate the effect of Cu off-stoichiometry on their electrical and thermal transport properties. Electrical resistivity drastically decreases down from ?10{sup 5} ?·cm to ?10{sup ?1} ?·cm as a result of Cu deficiency (x?=?0.01) at 300?K. Thermal conductivity of the samples at 300?K, which is dominated by lattice components, is estimated to be 2.3(3) Wm{sup ?1}K{sup ?1}. Stoichiometric LaCuSO has an optical band gap of 3.1?eV, while broad optical absorption at photon energies of approximately 2.1?eV was observed for Cu-deficient samples. Density functional theory calculation suggests that these broad absorption structures probably originate from the in-gap states generated by the sulfur vacancies created to compensate the charge imbalance due to Cu off-stoichiometry. These results clearly demonstrate that Cu deficiency plays a crucial role in determining the electrical transport properties of Cu-based p-type transparent semiconductors.

  18. Novel approaches to low temperature transient liquid phase bonding in the In-Sn/Cu and In-Sn-Bi/Cu systems

    E-Print Network [OSTI]

    Fischer, David S., Ph. D. Massachusetts Institute of Technology

    2008-01-01

    A fluxless low temperature transient liquid phase (LTTLP) bonding process was studied as a method of producing Cu/Cu joints below 125°C and 75°C using interlayer alloys from the In-Sn and In-Sn-Bi systems. Using thermodynamic ...

  19. Deposition and characterization of YBa2Cu3O7 /LaMnO3 / MgO/TiN heterostructures on Cu metal substrates for

    E-Print Network [OSTI]

    Pennycook, Steve

    ) superconductors on Cu metal surfaces. Using techniques such as high-energy electron diffraction and scanning as a barrier to Cu diffusion, oxide formation is suppressed, interfaces are clean, and a single cube will be determined by several key factors, including ma- terial and processing costs, robustness and reproducibil

  20. Systematic study of azimuthal anisotropy in Cu + Cu and Au + Au collisions at ?sNN = 62.4 and 200 GeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Adare, A.

    2015-09-23

    We have studied the dependence of azimuthal anisotropy v2 for inclusive and identified charged hadrons in Au+Au and Cu+Cu collisions on collision energy, species, and centrality. The values of v2 as a function of transverse momentum pT and centrality in Au+Au collisions at ?sNN=200 and 62.4 GeV are the same within uncertainties. However, in Cu+Cu collisions we observe a decrease in v2 values as the collision energy is reduced from 200 to 62.4 GeV. The decrease is larger in the more peripheral collisions. By examining both Au+Au and Cu+Cu collisions we find that v2 depends both on eccentricity and themore »number of participants, Npart. We observe that v2 divided by eccentricity (?) monotonically increases with Npart and scales as N1/3part. Thus, the Cu+Cu data at 62.4 GeV falls below the other scaled v2 data. For identified hadrons, v2 divided by the number of constituent quarks nq is independent of hadron species as a function of transverse kinetic energy KET=mT–m between 0.1T/nq2/(nq???N1/3part) vs KET/nq for all measured particles.« less

  1. Effects of Cu Diffusion from ZnTe:Cu/Ti Contacts on Carrier Lifetime of CdS/CdTe Thin Film Solar Cells: Preprint

    SciTech Connect (OSTI)

    Gessert, T. A.; Metzger, W. K.; Asher, S. E.; Young, M. R.; Johnston, S.; Dhere, R. G.; Duda, A.

    2008-05-01

    We study the performance of CdS/CdTe thin film PV devices processed with a ZnTe:Cu/Ti contact to investigate how carrier lifetime in the CdTe layer is affected by Cu diffusion from the contact.

  2. Study of Interaction of the Heavy Quarks with Nuclear Matter in Cu+Cu at sqrt(s_NN)=200 GeV

    E-Print Network [OSTI]

    Miroslav Krus; for the STAR Collaboration

    2009-01-29

    In this paper we present the study of the azimuthal correlation function of non-photonic electrons with low-pT hadrons produced in Cu+Cu collision at sqrt(s_NN) = 200 GeV measured by STAR experiment at RHIC. Possible modification of the awayside peak is observed.

  3. Magnetic structure of the low-dimensional magnet NaCu{sub 2}O{sub 2}: {sup 63,65}Cu and {sup 23}Na NMR studies

    SciTech Connect (OSTI)

    Sadykov, A. F., E-mail: sadykov@imp.uran.ru; Gerashchenko, A. P.; Piskunov, Yu. V.; Ogloblichev, V. V.; Smol’nikov, A. G.; Verkhovskii, S. V.; Buzlukov, A. L.; Arapova, I. Yu. [Russian Academy of Sciences, Institute of Metal Physics, Ural Branch (Russian Federation); Furukawa, Y. [Iowa State University, Ames Laboratory (United States); Yakubovskii, A. Yu. [National Research Centre Kurchatov Institute (Russian Federation); Bush, A. A. [Moscow State Technical University of Radio Engineering, Electronics, and Automation (Russian Federation)

    2014-11-15

    The magnetic structure of a quasi-one-dimensional frustrated NaCu{sub 2}O{sub 2} magnet single crystal is studied by NMR. The spatial orientation of the planar spin spirals in the copper-oxygen Cu{sup 2+}-O chains is determined, and its evolution as a function of the applied magnetic field direction is analyzed.

  4. Charged and strange hadron elliptic flow in Cu+Cu collisions at [sqrt]sNN=62.4 and 200 GeV

    E-Print Network [OSTI]

    Surrow, Bernd

    We present the results of an elliptic flow, v2, analysis of Cu+Cu collisions recorded with the solenoidal tracker detector (STAR) at the BNL Relativistic Heavy Ion Collider at ?sNN=62.4 and 200 GeV. Elliptic flow as a ...

  5. Spectra of identified high-pT pi± and p(p[over-bar]) in Cu+Cu collisions at [sqrt]sNN=200 GeV

    E-Print Network [OSTI]

    Balewski, Jan T.

    We report new results on identified (anti)proton and charged pion spectra at large transverse momenta (3Cu+Cu collisions at [sqrt]sNN=200 GeV using the STAR detector at the Relativistic Heavy Ion Collider ...

  6. K[superscript *0] production in Cu + Cu and Au + Au collisions at ?s[subscript NN]=62.4 GeV and 200 GeV

    E-Print Network [OSTI]

    Balewski, Jan T.

    We report on K[superscript *0] production at midrapidity in Au + Au and Cu + Cu collisions at ?s[subscript NN]=62.4 and 200 GeV collected by the Solenoid Tracker at the Relativistic Heavy Ion Collider detector. The ...

  7. J/psi production at high transverse momenta in p plus p and Cu plus Cu collisions at [sqrt] s(NN)=200 GeV

    E-Print Network [OSTI]

    Walker, Matthew H.

    The STAR Collaboration at the Relativistic Heavy Ion Collider presents measurements of J/psi-->e+e- at midrapidity and high transverse momentum (pT>5?GeV/c) in p+p and central Cu+Cu collisions at [sqrt]sNN=200 GeV. The ...

  8. Complex catalytic behaviors of CuTiOx mixed-oxide during CO oxidation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kim, Hyun You; Liu, Ping

    2015-09-21

    Mixed metal oxides have attracted considerable attention in heterogeneous catalysis due to the unique stability, reactivity, and selectivity. Here, the activity and stability of the CuTiOx monolayer film supported on Cu(111), CuTiOx/Cu(111), during CO oxidation was explored using density functional theory (DFT). The unique structural frame of CuTiOx is able to stabilize and isolate a single Cu+ site on the terrace, which is previously proposed active for CO oxidation. Furthermore, it is not the case, where the reaction via both the Langmuir–Hinshelwood (LH) and the Mars-van Krevelen (M-vK) mechanisms are hindered on such single Cu+ site. Upon the formation ofmore »step-edges, the synergy among Cu?+ sites, TiOx matrix, and Cu(111) is able to catalyze the reaction well. Depending on temperatures and partial pressure of CO and O2, the surface structure varies, which determines the dominant mechanism. In accordance with our results, the Cu?+ ion alone does not work well for CO oxidation in the form of single sites, while the synergy among multiple active sites is necessary to facilitate the reaction.« less

  9. Impedance analysis of MnCoCuO NTC ceramic

    SciTech Connect (OSTI)

    Song, S.G. . E-mail: song-ph0@wpmail.paisley.ac.uk; Ling, Z.; Placido, F.

    2005-07-12

    Impedance spectroscopy is often used to analyse the electrical properties of ceramic materials having high-resistive grain boundaries, such as ZnO and SrTiO{sub 3}. Fewer attempts have been made at using this technique for the analysis of inhomogeneous electronic ceramics consisting of grains with differing composition, such as those occurring in negative temperature coefficient (NTC) thermistors. In this study, we have attempted to adopt ac impedance spectroscopy together with other techniques to analyse an NTC thermistor ceramic material. An Mn, Co and Cu multielements transition metal oxide (MnCoCuO) ceramic was prepared by using homogeneous precipitation employing oxalic acid. This material displayed a typical NTC effect, showing an electrical resistance decrease with temperature when dc electrical measurement was performed. The ac impedance spectroscopy analysis showed that there were two peaks in impedance and conductance versus frequency plot. By using an alternative representation of impedance spectra Z'/f versus Z', three distinct relaxation frequency ranges were identified. They are believed to originate, respectively, from the electrode, phase 1 (rich-Cu phase) and phase 2 (poor-Cu phase) grains existing in this ceramic. SEM observation and EDX analysis clearly showed existence of two distinct phase grains. The resistance values were derived from phases 1 and 2 grains based on ac impedance data. The sum of the resistance values was in good agreement with that from dc measurement in the temperature range of 30-95 deg. C. The material constant, B, for the two phases was also calculated, giving 3100 and 3600 K for phases 1 and 2, respectively.

  10. CuC1 thermochemical cycle for hydrogen production

    DOE Patents [OSTI]

    Fan, Qinbai (Chicago, IL); Liu, Renxuan (Chicago, IL)

    2012-01-03

    An electrochemical cell for producing copper having a dense graphite anode electrode and a dense graphite cathode electrode disposed in a CuCl solution. An anion exchange membrane made of poly(ethylene vinyl alcohol) and polyethylenimine cross-linked with a cross-linking agent selected from the group consisting of acetone, formaldehyde, glyoxal, glutaraldehyde, and mixtures thereof is disposed between the two electrodes.

  11. Growth and oxidation of thin film Al{sub 2}Cu

    SciTech Connect (OSTI)

    Son, K.A.; Missert, N.A.; Barbour, J.C.; Hren, J.J.; Copeland, R.G.; Minor, K.G.

    1999-11-09

    Al{sub 2}Cu thin films ({approximately}382 nm) are fabricated by melting and resolidifying Al/Cu bilayers in the presence of a {approximately}3 nm Al{sub 2}O{sub 3} passivating layer. X-ray Photoelectron Spectroscopy (XPS) measures a 1.0 eV shift of the Cu2p{sub 3/2} peak and a 1.6 eV shift of the valence band relative to metallic Cu upon Al{sub 2}Cu formation. Scanning Electron Microscopy (SEM) and Electron Back-Scattered Diffraction (EBSD) show that the Al{sub 2}Cu film is composed of 30--70 {mu}m wide and 10--25 mm long cellular grains with (110) orientation. The atomic composition of the film as estimated by Energy Dispersive Spectroscopy (EDS) is 67{+-}2% Al and 33{+-}2% Cu. XPS scans of Al{sub 2}O{sub 3}/Al{sub 2}Cu taken before and after air exposure indicate that the upper Al{sub 2}Cu layers undergo further oxidation to Al{sub 2}O{sub 3} even in the presence of {approximately}5 nm Al{sub 2}O{sub 3}. The majority of Cu produced from oxidation is believed to migrate below the Al{sub 2}O{sub 3} layers, based upon the lack of evidence for metallic Cu in the XPS scans. In contrast to Al/Cu passivated with Al{sub 2}O{sub 3}, melting/resolidifying the Al/Cu bilayer without Al{sub 2}O{sub 3} results in phase-segregated dendritic film growth.

  12. The Thermal Stability of Nanocrystalline Au-Cu Alloys

    SciTech Connect (OSTI)

    Jankowski, A F; Saw, C K; Hayes, J P

    2006-02-15

    Grain refinement to the nanocrystalline scale is known to enhance physical properties as strength and surface hardness. For the case of Au-Cu alloys, development of the pulsed electroplating has led to the functional control of nanocrystalline grain size in the as-deposited condition. The thermal aging of Au-Cu electrodeposits is now investigated to assess the stability of the nanocrystalline grain structure and the difference between two diffusion mechanisms. The mobility of grain boundaries, dominant at low temperatures, leads to coarsening of grain size whereas at high temperature the process of bulk diffusion dominates. Although the kinetics of bulk diffusion are slow below 500 K at 10{sup -20} cm{sup 2} {center_dot} sec, the kinetics of grain boundary diffusion are faster at 10{sup -16} cm{sup 2} {center_dot} sec. The diffusivity values indicate that the grain boundaries of the as-deposited nanocrystalline Au-Cu are mobile and sensitive to low-temperature anneal treatments affecting the grain size, hence the strength of the material.

  13. Synthesis of BiPbSrCaCuO superconductor

    DOE Patents [OSTI]

    Hults, William L. (Los Alamos, NM); Kubat-Martin, Kimberly A. (Espanola, NM); Salazar, Kenneth V. (Espanola, NM); Phillips, David S. (Los Alamos, NM); Peterson, Dean E. (Los Alamos, NM)

    1994-01-01

    A process and a precursor composition for preparing a lead-doped bismuth-strontium-calcium-copper oxide superconductor of the formula Bi.sub.a Pb.sub.b Sr.sub.c Ca.sub.d Cu.sub.e O.sub.f wherein a is from about 1.7 to about 1.9, b is from about 0.3 to about 0.45, c is from about 1.6 to about 2.2, d is from about 1.6 to about 2.2, e is from about 2.97 to about 3.2 and f is 10.+-.z by reacting a mixture of Bi.sub.4 Sr.sub.3 Ca.sub.3 Cu.sub.4 O.sub.16.+-.z, an alkaline earth metal cuprate, e.g., Sr.sub.9 Ca.sub.5 Cu.sub.24 O.sub.41, and an alkaline earth metal plumbate, e.g., Ca.sub.2-x Sr.sub.x PbO.sub.4 wherein x is about 0.5, is disclosed.

  14. Synthesis of BiPbSrCaCuO superconductor

    DOE Patents [OSTI]

    Hults, W.L.; Kubat-Martin, K.A.; Salazar, K.V.; Phillips, D.S.; Peterson, D.E.

    1994-04-05

    A process and a precursor composition for preparing a lead-doped bismuth-strontium-calcium-copper oxide superconductor of the formula Bi[sub a]Pb[sub b]Sr[sub c]Ca[sub d]Cu[sub e]O[sub f] wherein a is from about 1.7 to about 1.9, b is from about 0.3 to about 0.45, c is from about 1.6 to about 2.2, d is from about 1.6 to about 2.2, e is from about 2.97 to about 3.2 and f is 10[+-]z by reacting a mixture of Bi[sub 4]Sr[sub 3]Ca[sub 3]Cu[sub 4]O[sub 16[+-]z], an alkaline earth metal cuprate, e.g., Sr[sub 9]Ca[sub 5]Cu[sub 24]O[sub 41], and an alkaline earth metal plumbate, e.g., Ca[sub 2[minus]x]Sr[sub x]PbO[sub 4] wherein x is about 0.5, is disclosed.

  15. Systematic Study of Azimuthal Anisotropy in Cu$+$Cu and Au$+$Au Collisions at $\\sqrt{s_{_{NN}}} = 62.4$ and 200 GeV

    E-Print Network [OSTI]

    A. Adare; S. Afanasiev; C. Aidala; N. N. Ajitanand; Y. Akiba; H. Al-Bataineh; A. Al-Jamel; J. Alexander; K. Aoki; L. Aphecetche; R. Armendariz; S. H. Aronson; J. Asai; E. T. Atomssa; R. Averbeck; T. C. Awes; B. Azmoun; V. Babintsev; G. Baksay; L. Baksay; A. Baldisseri; K. N. Barish; P. D. Barnes; B. Bassalleck; S. Bathe; S. Batsouli; V. Baublis; F. Bauer; A. Bazilevsky; S. Belikov; R. Bennett; Y. Berdnikov; A. A. Bickley; M. T. Bjorndal; J. G. Boissevain; H. Borel; K. Boyle; M. L. Brooks; D. S. Brown; D. Bucher; H. Buesching; V. Bumazhnov; G. Bunce; J. M. Burward-Hoy; S. Butsyk; S. Campbell; J. -S. Chai; B. S. Chang; J. -L. Charvet; S. Chernichenko; C. Y. Chi; J. Chiba; M. Chiu; I. J. Choi; T. Chujo; P. Chung; A. Churyn; V. Cianciolo; C. R. Cleven; Y. Cobigo; B. A. Cole; M. P. Comets; P. Constantin; M. Csanád; T. Csörg?; T. Dahms; K. Das; G. David; M. B. Deaton; K. Dehmelt; H. Delagrange; A. Denisov; D. d'Enterria; A. Deshpande; E. J. Desmond; O. Dietzsch; A. Dion; M. Donadelli; J. L. Drachenberg; O. Drapier; A. Drees; A. K. Dubey; A. Durum; V. Dzhordzhadze; Y. V. Efremenko; J. Egdemir; F. Ellinghaus; W. S. Emam; A. Enokizono; H. En'yo; B. Espagnon; S. Esumi; K. O. Eyser; D. E. Fields; M. Finger; M. Finger; \\, Jr.; F. Fleuret; S. L. Fokin; B. Forestier; Z. Fraenkel; J. E. Frantz; A. Franz; A. D. Frawley; K. Fujiwara; Y. Fukao; S. -Y. Fung; T. Fusayasu; S. Gadrat; I. Garishvili; F. Gastineau; M. Germain; A. Glenn; H. Gong; M. Gonin; J. Gosset; Y. Goto; R. Granier de Cassagnac; N. Grau; S. V. Greene; M. Grosse Perdekamp; T. Gunji; H. -Å. Gustafsson; T. Hachiya; A. Hadj Henni; C. Haegemann; J. S. Haggerty; M. N. Hagiwara; H. Hamagaki; R. Han; H. Harada; E. P. Hartouni; K. Haruna; M. Harvey; E. Haslum; K. Hasuko; R. Hayano; X. He; M. Heffner; T. K. Hemmick; T. Hester; J. M. Heuser; H. Hiejima; J. C. Hill; R. Hobbs; M. Hohlmann; M. Holmes; W. Holzmann; K. Homma; B. Hong; T. Horaguchi; D. Hornback; S. Huang; M. G. Hur; T. Ichihara; H. Iinuma; K. Imai; M. Inaba; Y. Inoue; D. Isenhower; L. Isenhower; M. Ishihara; T. Isobe; M. Issah; A. Isupov; B. V. Jacak; J. Jia; J. Jin; O. Jinnouchi; B. M. Johnson; K. S. Joo; D. Jouan; F. Kajihara; S. Kametani; N. Kamihara; J. Kamin; M. Kaneta; J. H. Kang; H. Kanou; T. Kawagishi; D. Kawall; A. V. Kazantsev; S. Kelly; A. Khanzadeev; J. Kikuchi; D. H. Kim; D. J. Kim; E. Kim; Y. -S. Kim; E. Kinney; Á. Kiss; E. Kistenev; A. Kiyomichi; J. Klay; C. Klein-Boesing; L. Kochenda; V. Kochetkov; B. Komkov; M. Konno; D. Kotchetkov; A. Kozlov; A. Král; A. Kravitz; P. J. Kroon; J. Kubart; G. J. Kunde; N. Kurihara; K. Kurita; M. J. Kweon; Y. Kwon; G. S. Kyle; R. Lacey; Y. S. Lai; J. G. Lajoie; A. Lebedev; Y. Le Bornec; S. Leckey; D. M. Lee; M. K. Lee; T. Lee; M. J. Leitch; M. A. L. Leite; B. Lenzi; X. Li; X. H. Li; H. Lim; T. Liška; A. Litvinenko; M. X. Liu; B. Love; D. Lynch; C. F. Maguire; Y. I. Makdisi; A. Malakhov; M. D. Malik; V. I. Manko; Y. Mao; L. Mašek; H. Masui; F. Matathias; M. C. McCain; M. McCumber; P. L. McGaughey; Y. Miake; P. Mikeš; K. Miki; T. E. Miller; A. Milov; S. Mioduszewski; G. C. Mishra; M. Mishra; J. T. Mitchell; M. Mitrovski; A. Morreale; D. P. Morrison; J. M. Moss; T. V. Moukhanova; D. Mukhopadhyay; J. Murata; S. Nagamiya; Y. Nagata; J. L. Nagle; M. Naglis; I. Nakagawa; Y. Nakamiya; T. Nakamura; K. Nakano; J. Newby; M. Nguyen; B. E. Norman; R. Nouicer; A. S. Nyanin; J. Nystrand; E. O'Brien; S. X. Oda; C. A. Ogilvie; H. Ohnishi; I. D. Ojha; M. Oka; K. Okada; O. O. Omiwade; A. Oskarsson; I. Otterlund; M. Ouchida; K. Ozawa; R. Pak; D. Pal; A. P. T. Palounek; V. Pantuev; V. Papavassiliou; J. Park; W. J. Park; S. F. Pate; H. Pei; J. -C. Peng; H. Pereira; V. Peresedov; D. Yu. Peressounko; C. Pinkenburg; R. P. Pisani; M. L. Purschke; A. K. Purwar; H. Qu; J. Rak; A. Rakotozafindrabe; I. Ravinovich; K. F. Read; S. Rembeczki; M. Reuter; K. Reygers; V. Riabov; Y. Riabov; G. Roche; A. Romana; M. Rosati; S. S. E. Rosendahl; P. Rosnet; P. Rukoyatkin; V. L. Rykov; S. S. Ryu; B. Sahlmueller; N. Saito; T. Sakaguchi; S. Sakai; H. Sakata; V. Samsonov; H. D. Sato; S. Sato; S. Sawada; J. Seele; R. Seidl; V. Semenov; R. Seto; D. Sharma; T. K. Shea; I. Shein; A. Shevel; T. -A. Shibata; K. Shigaki; M. Shimomura; T. Shohjoh; K. Shoji; A. Sickles; C. L. Silva; D. Silvermyr; C. Silvestre; K. S. Sim; C. P. Singh; V. Singh; S. Skutnik; M. Slune?ka; W. C. Smith; A. Soldatov; R. A. Soltz; W. E. Sondheim; S. P. Sorensen; I. V. Sourikova; F. Staley; P. W. Stankus; E. Stenlund; M. Stepanov; A. Ster; S. P. Stoll; T. Sugitate; C. Suire; J. P. Sullivan; J. Sziklai; T. Tabaru; S. Takagi; E. M. Takagui; A. Taketani; K. H. Tanaka; Y. Tanaka; K. Tanida; M. J. Tannenbaum; A. Taranenko; P. Tarján; T. L. Thomas; T. Todoroki; M. Togawa; A. Toia; J. Tojo; L. Tomášek; H. Torii; R. S. Towell; V-N. Tram; I. Tserruya; Y. Tsuchimoto; S. K. Tuli; H. Tydesjö; N. Tyurin; C. Vale; H. Valle

    2015-09-18

    We have studied the dependence of azimuthal anisotropy $v_2$ for inclusive and identified charged hadrons in Au$+$Au and Cu$+$Cu collisions on collision energy, species, and centrality. The values of $v_2$ as a function of transverse momentum $p_T$ and centrality in Au$+$Au collisions at $\\sqrt{s_{_{NN}}}$=200 GeV and 62.4 GeV are the same within uncertainties. However, in Cu$+$Cu collisions we observe a decrease in $v_2$ values as the collision energy is reduced from 200 to 62.4 GeV. The decrease is larger in the more peripheral collisions. By examining both Au$+$Au and Cu$+$Cu collisions we find that $v_2$ depends both on eccentricity and the number of participants, $N_{\\rm part}$. We observe that $v_2$ divided by eccentricity ($\\varepsilon$) monotonically increases with $N_{\\rm part}$ and scales as ${N_{\\rm part}^{1/3}}$. The Cu$+$Cu data at 62.4 GeV falls below the other scaled $v_{2}$ data. For identified hadrons, $v_2$ divided by the number of constituent quarks $n_q$ is independent of hadron species as a function of transverse kinetic energy $KE_T=m_T-m$ between $0.1Cu$+$Cu data at 62.4 GeV, of $v_2/(n_q\\cdot\\varepsilon\\cdot N^{1/3}_{\\rm part})$ vs $KE_T/n_q$ for all measured particles.

  16. Systematic Study of Azimuthal Anisotropy in Cu$+$Cu and Au$+$Au Collisions at $\\sqrt{s_{_{NN}}} = 62.4$ and 200~GeV

    E-Print Network [OSTI]

    A. Adare; S. Afanasiev; C. Aidala; N. N. Ajitanand; Y. Akiba; H. Al-Bataineh; A. Al-Jamel; J. Alexander; K. Aoki; L. Aphecetche; R. Armendariz; S. H. Aronson; J. Asai; E. T. Atomssa; R. Averbeck; T. C. Awes; B. Azmoun; V. Babintsev; G. Baksay; L. Baksay; A. Baldisseri; K. N. Barish; P. D. Barnes; B. Bassalleck; S. Bathe; S. Batsouli; V. Baublis; F. Bauer; A. Bazilevsky; S. Belikov; R. Bennett; Y. Berdnikov; A. A. Bickley; M. T. Bjorndal; J. G. Boissevain; H. Borel; K. Boyle; M. L. Brooks; D. S. Brown; D. Bucher; H. Buesching; V. Bumazhnov; G. Bunce; J. M. Burward-Hoy; S. Butsyk; S. Campbell; J. -S. Chai; B. S. Chang; J. -L. Charvet; S. Chernichenko; C. Y. Chi; J. Chiba; M. Chiu; I. J. Choi; T. Chujo; P. Chung; A. Churyn; V. Cianciolo; C. R. Cleven; Y. Cobigo; B. A. Cole; M. P. Comets; P. Constantin; M. Csanád; T. Csörg?; T. Dahms; K. Das; G. David; M. B. Deaton; K. Dehmelt; H. Delagrange; A. Denisov; D. d'Enterria; A. Deshpande; E. J. Desmond; O. Dietzsch; A. Dion; M. Donadelli; J. L. Drachenberg; O. Drapier; A. Drees; A. K. Dubey; A. Durum; V. Dzhordzhadze; Y. V. Efremenko; J. Egdemir; F. Ellinghaus; W. S. Emam; A. Enokizono; H. En'yo; B. Espagnon; S. Esumi; K. O. Eyser; D. E. Fields; M. Finger; M. Finger; \\, Jr.; F. Fleuret; S. L. Fokin; B. Forestier; Z. Fraenkel; J. E. Frantz; A. Franz; A. D. Frawley; K. Fujiwara; Y. Fukao; S. -Y. Fung; T. Fusayasu; S. Gadrat; I. Garishvili; F. Gastineau; M. Germain; A. Glenn; H. Gong; M. Gonin; J. Gosset; Y. Goto; R. Granier de Cassagnac; N. Grau; S. V. Greene; M. Grosse Perdekamp; T. Gunji; H. -Å. Gustafsson; T. Hachiya; A. Hadj Henni; C. Haegemann; J. S. Haggerty; M. N. Hagiwara; H. Hamagaki; R. Han; H. Harada; E. P. Hartouni; K. Haruna; M. Harvey; E. Haslum; K. Hasuko; R. Hayano; X. He; M. Heffner; T. K. Hemmick; T. Hester; J. M. Heuser; H. Hiejima; J. C. Hill; R. Hobbs; M. Hohlmann; M. Holmes; W. Holzmann; K. Homma; B. Hong; T. Horaguchi; D. Hornback; S. Huang; M. G. Hur; T. Ichihara; H. Iinuma; K. Imai; M. Inaba; Y. Inoue; D. Isenhower; L. Isenhower; M. Ishihara; T. Isobe; M. Issah; A. Isupov; B. V. Jacak; J. Jia; J. Jin; O. Jinnouchi; B. M. Johnson; K. S. Joo; D. Jouan; F. Kajihara; S. Kametani; N. Kamihara; J. Kamin; M. Kaneta; J. H. Kang; H. Kanou; T. Kawagishi; D. Kawall; A. V. Kazantsev; S. Kelly; A. Khanzadeev; J. Kikuchi; D. H. Kim; D. J. Kim; E. Kim; Y. -S. Kim; E. Kinney; Á. Kiss; E. Kistenev; A. Kiyomichi; J. Klay; C. Klein-Boesing; L. Kochenda; V. Kochetkov; B. Komkov; M. Konno; D. Kotchetkov; A. Kozlov; A. Král; A. Kravitz; P. J. Kroon; J. Kubart; G. J. Kunde; N. Kurihara; K. Kurita; M. J. Kweon; Y. Kwon; G. S. Kyle; R. Lacey; Y. S. Lai; J. G. Lajoie; A. Lebedev; Y. Le Bornec; S. Leckey; D. M. Lee; M. K. Lee; T. Lee; M. J. Leitch; M. A. L. Leite; B. Lenzi; X. Li; X. H. Li; H. Lim; T. Liška; A. Litvinenko; M. X. Liu; B. Love; D. Lynch; C. F. Maguire; Y. I. Makdisi; A. Malakhov; M. D. Malik; V. I. Manko; Y. Mao; L. Mašek; H. Masui; F. Matathias; M. C. McCain; M. McCumber; P. L. McGaughey; Y. Miake; P. Mikeš; K. Miki; T. E. Miller; A. Milov; S. Mioduszewski; G. C. Mishra; M. Mishra; J. T. Mitchell; M. Mitrovski; A. Morreale; D. P. Morrison; J. M. Moss; T. V. Moukhanova; D. Mukhopadhyay; J. Murata; S. Nagamiya; Y. Nagata; J. L. Nagle; M. Naglis; I. Nakagawa; Y. Nakamiya; T. Nakamura; K. Nakano; J. Newby; M. Nguyen; B. E. Norman; R. Nouicer; A. S. Nyanin; J. Nystrand; E. O'Brien; S. X. Oda; C. A. Ogilvie; H. Ohnishi; I. D. Ojha; M. Oka; K. Okada; O. O. Omiwade; A. Oskarsson; I. Otterlund; M. Ouchida; K. Ozawa; R. Pak; D. Pal; A. P. T. Palounek; V. Pantuev; V. Papavassiliou; J. Park; W. J. Park; S. F. Pate; H. Pei; J. -C. Peng; H. Pereira; V. Peresedov; D. Yu. Peressounko; C. Pinkenburg; R. P. Pisani; M. L. Purschke; A. K. Purwar; H. Qu; J. Rak; A. Rakotozafindrabe; I. Ravinovich; K. F. Read; S. Rembeczki; M. Reuter; K. Reygers; V. Riabov; Y. Riabov; G. Roche; A. Romana; M. Rosati; S. S. E. Rosendahl; P. Rosnet; P. Rukoyatkin; V. L. Rykov; S. S. Ryu; B. Sahlmueller; N. Saito; T. Sakaguchi; S. Sakai; H. Sakata; V. Samsonov; H. D. Sato; S. Sato; S. Sawada; J. Seele; R. Seidl; V. Semenov; R. Seto; D. Sharma; T. K. Shea; I. Shein; A. Shevel; T. -A. Shibata; K. Shigaki; M. Shimomura; T. Shohjoh; K. Shoji; A. Sickles; C. L. Silva; D. Silvermyr; C. Silvestre; K. S. Sim; C. P. Singh; V. Singh; S. Skutnik; M. Slune?ka; W. C. Smith; A. Soldatov; R. A. Soltz; W. E. Sondheim; S. P. Sorensen; I. V. Sourikova; F. Staley; P. W. Stankus; E. Stenlund; M. Stepanov; A. Ster; S. P. Stoll; T. Sugitate; C. Suire; J. P. Sullivan; J. Sziklai; T. Tabaru; S. Takagi; E. M. Takagui; A. Taketani; K. H. Tanaka; Y. Tanaka; K. Tanida; M. J. Tannenbaum; A. Taranenko; P. Tarján; T. L. Thomas; T. Todoroki; M. Togawa; A. Toia; J. Tojo; L. Tomášek; H. Torii; R. S. Towell; V-N. Tram; I. Tserruya; Y. Tsuchimoto; S. K. Tuli; H. Tydesjö; N. Tyurin; C. Vale; H. Valle

    2014-12-02

    We have studied the dependence of azimuthal anisotropy $v_2$ for inclusive and identified charged hadrons in Au$+$Au and Cu$+$Cu collisions on collision energy, species, and centrality. The values of $v_2$ as a function of transverse momentum $p_T$ and centrality in Au$+$Au collisions at $\\sqrt{s_{_{NN}}}$=200~GeV and 62.4~GeV are the same within uncertainties. However, in Cu$+$Cu collisions we observe a decrease in $v_2$ values as the collision energy is reduced from 200 to 62.4~GeV. The decrease is larger in the more peripheral collisions. By examining both Au$+$Au and Cu$+$Cu collisions we find that $v_2$ depends both on eccentricity and the number of participants, $N_{\\rm part}$. We observe that $v_2$ divided by eccentricity ($\\varepsilon$) monotonically increases with $N_{\\rm part}$ and scales as ${N_{\\rm part}^{1/3}}$. The Cu$+$Cu data at 62.4 GeV falls below the other scaled $v_{2}$ data. For identified hadrons, $v_2$ divided by the number of constituent quarks $n_q$ is independent of hadron species as a function of transverse kinetic energy $KE_T=m_T-m$ between $0.1Cu$+$Cu data at 62.4 GeV, of $v_2/(n_q\\cdot\\varepsilon\\cdot N^{1/3}_{\\rm part})$ vs $KE_T/n_q$ for all measured particles.

  17. Oxygen-induced Y surface segregation in a CuPdY ternary alloy

    SciTech Connect (OSTI)

    Tafen, D. N.; Miller, J. B.; Dogan, O. N.; Baltrus, J. P.; Kondratyuk, P.

    2013-01-01

    We present a comprehensive theoretical and experimental study of the segregation behavior of the ternary alloy CuPdY in vacuum (i.e., the clean surface) and in the presence of oxygen. Theoretical prediction shows that for clean surface, yttrium will substitute first for Cu and then for Pd at the subsurface lattice site before segregating to the surface where it substitutes for Cu. XRD characterization of the surface of CuPdY indicates the presence of two major phases, B2 CuPd and Pd{sub 3}Y. In the presence of adsorbed oxygen, theory predicts that Y preferentially occupies surface sites due to its stronger oxygen affinity compared to Cu and Pd. XPS experiments confirm the computational results in the adsorbed oxygen case, showing that surface segregation of yttrium is induced by the formation of Y-oxides at the top-surface of the alloy.

  18. Method of fabricating high-efficiency Cu(In,Ga)(SeS).sub.2 thin films for solar cells

    DOE Patents [OSTI]

    Noufi, Rommel (Golden, CO); Gabor, Andrew M. (Boulder, CO); Tuttle, John R. (Denver, CO); Tennant, Andrew L. (Denver, CO); Contreras, Miguel A. (Golden, CO); Albin, David S. (Denver, CO); Carapella, Jeffrey J. (Evergreen, CO)

    1995-01-01

    A process for producing a slightly Cu-poor thin film of Cu(In,Ga)(Se,S).sub.2 comprises depositing a first layer of (In,Ga).sub.x (Se,S).sub.y followed by depositing just enough Cu+(Se,S) or Cu.sub.x (Se,S) to produce the desired slightly Cu-poor material. In a variation, most, but not all, (about 90 to 99%) of the (In,Ga).sub.x (Se,S).sub.y is deposited first, followed by deposition of all the Cu+(Se,S) or Cu.sub.x (Se,S) to go near stoichiometric, possibly or even preferably slightly Cu-rich, and then in turn followed by deposition of the remainder (about 1 to 10%) of the (In,Ga).sub.x (Se,S).sub.y to end with a slightly Cu-poor composition. In yet another variation, a small portion (about 1 to 10%) of the (In,Ga).sub.x (Se,S).sub.y is first deposited as a seed layer, followed by deposition of all of the Cu+(Se,S) or Cu.sub.x (Se,S) to make a very Cu-rich mixture, and then followed deposition of the remainder of the (In,Ga).sub.x (Se,S).sub.y to go slightly Cu-poor in the final Cu(In,Ga)(Se,S).sub.2 thin film.

  19. Method of fabricating high-efficiency Cu(In,Ga)(Se,S){sub 2} thin films for solar cells

    DOE Patents [OSTI]

    Noufi, R.; Gabor, A.M.; Tuttle, J.R.; Tennant, A.L.; Contreras, M.A.; Albin, D.S.; Carapella, J.J.

    1995-08-15

    A process for producing a slightly Cu-poor thin film of Cu(In,Ga)(Se,S){sub 2} comprises depositing a first layer of (In,Ga){sub x} (Se,S){sub y} followed by depositing just enough Cu+(Se,S) or Cu{sub x} (Se,S) to produce the desired slightly Cu-poor material. In a variation, most, but not all, (about 90 to 99%) of the (In,Ga){sub x} (Se,S){sub y} is deposited first, followed by deposition of all the Cu+(Se,S) or Cu{sub x} (Se,S) to go near stoichiometric, possibly or even preferably slightly Cu-rich, and then in turn followed by deposition of the remainder (about 1 to 10%) of the (In,Ga){sub x} (Se,S){sub y} to end with a slightly Cu-poor composition. In yet another variation, a small portion (about 1 to 10%) of the (In,Ga){sub x} (Se,S){sub y} is first deposited as a seed layer, followed by deposition of all of the Cu+(Se,S) or Cu{sub x} (Se,S) to make a very Cu-rich mixture, and then followed deposition of the remainder of the (In,Ga){sub x} (Se,S){sub y} to go slightly Cu-poor in the final Cu(In,Ga)(Se,S){sub 2} thin film. 5 figs.

  20. Adsorbate-driven morphological changes on Cu(111) nano-pits

    SciTech Connect (OSTI)

    Mudiyanselage, K.; Xu, F.; Hoffmann, F. M.; Hrbek, J.; Waluyo, I.; Boscoboinik, J. A.; Stacchiola, D. J.

    2015-01-01

    Adsorbate-driven morphological changes of pitted-Cu(111) surfaces have been investigated following the adsorption and desorption of CO and H. The morphology of the pitted-Cu(111) surfaces, prepared by Ar+ sputtering, exposed a few atomic layers deep nested hexagonal pits of diameters from 8 to 38 nm with steep step bundles. The roughness of pitted-Cu(111) surfaces can be healed by heating to 450-500 K in vacuum. Adsorption of CO on the pitted-Cu(111) surface leads to two infrared peaks at 2089-2090 and 2101-2105 cm-1 for CO adsorbed on under-coordinated sites in addition to the peak at 2071 cm-1 for CO adsorbed on atop sites of the close-packed Cu(111) surface. CO adsorbed on under-coordinated sites is thermally more stable than that of atop Cu(111) sites. Annealing of the CO-covered surface from 100 to 300 K leads to minor changes of the surface morphology. In contrast, annealing of a H covered surface to 300 K creates a smooth Cu(111) surface as deduced from infrared data of adsorbed CO and scanning tunnelling microscopy (STM) imaging. The observation of significant adsorbate-driven morphological changes with H is attributed to its stronger modification of the Cu(111) surface by the formation of a sub-surface hydride with a hexagonal structure, which relaxes into the healed Cu(111) surface upon hydrogen desorption. These morphological changes occur ~150 K below the temperature required for healing of the pitted-Cu(111) surface by annealing in vacuum. In contrast, the adsorption of CO, which only interacts with the top-most Cu layer and desorbs by 160 K, does not significantly change the morphology of the pitted-Cu(111) surface.

  1. Adsorbate-driven morphological changes on Cu(111) nano-pits

    SciTech Connect (OSTI)

    Mudiyanselage, K.; Xu, F.; Hoffmann, F. M.; Hrbek, J.; Waluyo, I.; Boscoboinik, J. A.; Stacchiola, D. J.

    2014-12-09

    Adsorbate-driven morphological changes of pitted-Cu(111) surfaces have been investigated following the adsorption and desorption of CO and H. The morphology of the pitted-Cu(111) surfaces, prepared by Ar+ sputtering, exposed a few atomic layers deep nested hexagonal pits of diameters from 8 to 38 nm with steep step bundles. The roughness of pitted-Cu(111) surfaces can be healed by heating to 450-500 K in vacuum. Adsorption of CO on the pitted-Cu(111) surface leads to two infrared peaks at 2089-2090 and 2101-2105 cm-1 for CO adsorbed on under-coordinated sites in addition to the peak at 2071 cm-1 for CO adsorbed on atop sites of the close-packed Cu(111) surface. CO adsorbed on under-coordinated sites is thermally more stable than that of atop Cu(111) sites. Annealing of the CO-covered surface from 100 to 300 K leads to minor changes of the surface morphology. In contrast, annealing of a H covered surface to 300 K creates a smooth Cu(111) surface as deduced from infrared data of adsorbed CO and scanning tunnelling microscopy (STM) imaging. The observation of significant adsorbate-driven morphological changes with H is attributed to its stronger modification of the Cu(111) surface by the formation of a sub-surface hydride with a hexagonal structure, which relaxes into the healed Cu(111) surface upon hydrogen desorption. These morphological changes occur ~150 K below the temperature required for healing of the pitted-Cu(111) surface by annealing in vacuum. In contrast, the adsorption of CO, which only interacts with the top-most Cu layer and desorbs by 160 K, does not significantly change the morphology of the pitted-Cu(111) surface.

  2. Adsorbate-driven morphological changes on Cu(111) nano-pits

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Mudiyanselage, K.; Xu, F.; Hoffmann, F. M.; Hrbek, J.; Waluyo, I.; Boscoboinik, J. A.; Stacchiola, D. J.

    2014-12-09

    Adsorbate-driven morphological changes of pitted-Cu(111) surfaces have been investigated following the adsorption and desorption of CO and H. The morphology of the pitted-Cu(111) surfaces, prepared by Ar+ sputtering, exposed a few atomic layers deep nested hexagonal pits of diameters from 8 to 38 nm with steep step bundles. The roughness of pitted-Cu(111) surfaces can be healed by heating to 450-500 K in vacuum. Adsorption of CO on the pitted-Cu(111) surface leads to two infrared peaks at 2089-2090 and 2101-2105 cm-1 for CO adsorbed on under-coordinated sites in addition to the peak at 2071 cm-1 for CO adsorbed on atop sitesmore »of the close-packed Cu(111) surface. CO adsorbed on under-coordinated sites is thermally more stable than that of atop Cu(111) sites. Annealing of the CO-covered surface from 100 to 300 K leads to minor changes of the surface morphology. In contrast, annealing of a H covered surface to 300 K creates a smooth Cu(111) surface as deduced from infrared data of adsorbed CO and scanning tunnelling microscopy (STM) imaging. The observation of significant adsorbate-driven morphological changes with H is attributed to its stronger modification of the Cu(111) surface by the formation of a sub-surface hydride with a hexagonal structure, which relaxes into the healed Cu(111) surface upon hydrogen desorption. These morphological changes occur ~150 K below the temperature required for healing of the pitted-Cu(111) surface by annealing in vacuum. In contrast, the adsorption of CO, which only interacts with the top-most Cu layer and desorbs by 160 K, does not significantly change the morphology of the pitted-Cu(111) surface.« less

  3. High Pressure Transformation of La4Cu3MoO12 to a Layered Perovskite

    E-Print Network [OSTI]

    Poeppelmeier, Kenneth R.

    High Pressure Transformation of La4Cu3MoO12 to a Layered Perovskite Douglas A. Vander Griend it stabilizes the perovskite structure. In this paper, we describe the HP synthesis of a new copper-rich layered perovskite, La4Cu3MoO12, which is isotypic with La2- CuSnO6.1 When synthesized at ambient pressure (AP

  4. Adsorbate-driven morphological changes on Cu(111) nano-pits

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Mudiyanselage, K. [Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; BMCC-CUNY, New York, NY (United States). Dept. of Science; Xu, F. [Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; State Univ. of New York (SUNY), Stony Brook, NY (United States). Chemistry Dept.; Hoffmann, F. M. [BMCC-CUNY, New York, NY (United States). Dept. of Science; Hrbek, J. [Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; Waluyo, I. [Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.; Boscoboinik, J. A. [Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials; Stacchiola, D. J. [Brookhaven National Lab. (BNL), Upton, NY (United States). Chemistry Dept.

    2015-01-01

    Adsorbate-driven morphological changes of pitted-Cu(111) surfaces have been investigated following the adsorption and desorption of CO and H. The morphology of the pitted-Cu(111) surfaces, prepared by Ar+ sputtering, exposed a few atomic layers deep nested hexagonal pits of diameters from 8 to 38 nm with steep step bundles. The roughness of pitted-Cu(111) surfaces can be healed by heating to 450-500 K in vacuum. Adsorption of CO on the pitted-Cu(111) surface leads to two infrared peaks at 2089-2090 and 2101-2105 cm-1 for CO adsorbed on under-coordinated sites in addition to the peak at 2071 cm-1 for CO adsorbed on atop sites of the close-packed Cu(111) surface. CO adsorbed on under-coordinated sites is thermally more stable than that of atop Cu(111) sites. Annealing of the CO-covered surface from 100 to 300 K leads to minor changes of the surface morphology. In contrast, annealing of a H covered surface to 300 K creates a smooth Cu(111) surface as deduced from infrared data of adsorbed CO and scanning tunnelling microscopy (STM) imaging. The observation of significant adsorbate-driven morphological changes with H is attributed to its stronger modification of the Cu(111) surface by the formation of a sub-surface hydride with a hexagonal structure, which relaxes into the healed Cu(111) surface upon hydrogen desorption. These morphological changes occur ~150 K below the temperature required for healing of the pitted-Cu(111) surface by annealing in vacuum. In contrast, the adsorption of CO, which only interacts with the top-most Cu layer and desorbs by 160 K, does not significantly change the morphology of the pitted-Cu(111) surface.

  5. DISSERTATION DEVICE PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS

    E-Print Network [OSTI]

    Sites, James R.

    OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS Thin-film solar cells have the potential to be an important contributor to the global energy demand by the mid-21st-century. Cu(In,Ga)Se2 (CIGS) solar cells, which haveDISSERTATION DEVICE PHYSICS OF Cu(In,Ga)Se2 THIN-FILM SOLAR CELLS Submitted by Markus Gloeckler

  6. In-situ surface composition measurements of CuGaSe{sub 2} thin films

    SciTech Connect (OSTI)

    Fons, P.; Yamada, A.; Niki, S.; Oyanagi, H.

    1998-12-31

    Two CuGaSe{sub 2} films were grown by molecular beam epitaxy onto GaAs (001) substrates with varying Cu/Ga flux ratios under Se overpressure conditions. Growth was interrupted at predetermined times and the surface composition was measured using Auger electron spectroscopy after which growth was continued. After growth, the film composition was analyzed using voltage dependent electron microprobe spectroscopy. Film structure and morphology were also analyzed using x-ray diffraction and atomic force microscopy. The film with a Cu/Ga ratio larger than unity showed evidence of surface segregation of a second Cu-rich phase with a Cu/Se composition ratio slightly greater than unity. A second CuGaSe{sub 2} film with a Cu/Ga ratio of less than unity showed no change in surface composition with time and was also consistent with bulk composition measurements. Diffraction measurements indicated a high concentration of twins as well as the presence of domains with mixed c and a axes in the Ga-rich film. The Cu-rich films by contrast were single domain and had a narrower mosaics. High sensitivity scans along the [001] reciprocal axis did not exhibit any new peaks not attributable to either the substrate or the CuGaSe{sub 2} thin film.

  7. Structural, optical and ethanol sensing properties of Cu-doped SnO{sub 2} nanowires

    SciTech Connect (OSTI)

    Johari, Anima Sharma, Manish; Johari, Anoopshi; Bhatnagar, M. C.

    2014-04-24

    In present work, one-dimensional nanostructure of Cu-doped Tin oxide (SnO{sub 2}) was synthesized by using thermal evaporation method in a tubular furnace under Nitrogen (N{sub 2}) ambience. The growth was carried out at atmospheric pressure. SEM and TEM images reveal the growth of wire-like nanostructures of Cu-doped SnO{sub 2} on Si substrate. The XRD analysis confirms that the synthesized SnO{sub 2} nanowires have tetragonal rutile structure with polycrystalline nature and X-ray diffraction pattern also showed that Cu gets incorporated into the SnO{sub 2} lattice. EDX spectra confirm the doping of Cu into SnO{sub 2} nanowires and atomic fraction of Cu in nanowires is ? 0.5 at%. The Vapor Liquid Solid (VLS) growth mechanism for Cu-doped SnO{sub 2} nanowires was also confirmed by EDX spectra. The optical properties of as grown Cu-doped SnO{sub 2} nanowires were studied by using UV-vis spectra which concludes the band gap of about 3.7 eV. As synthesized single Cu-doped SnO{sub 2} nanowire based gas sensor exhibit relatively good performance to ethanol gas. This sensing behaviour offers a suitable application of the Cu-doped SnO{sub 2} nanowire sensor for detection of ethanol gas.

  8. Enthalpy of mixing of liquid Ni-Zr and Cu-Ni-Zr alloys

    SciTech Connect (OSTI)

    Witusiewicz, V.T.; Sommer, F.

    2000-04-01

    Since the Al-Cu-Ni-Zr system is a basis for the production of bulk amorphous materials by rapid solidification techniques from the liquid state, it is of great scientific interest to determine the partial and the integral thermodynamic functions of liquid and undercooled liquid alloys. Such data, as was pointed out previously, are important in order to understand their extremely good glass-forming ability in multicomponent metallic systems as well as for processing improvements. In order to measure the thermodynamic properties of the Al-Cu-Ni-Zr quaternary, it is necessary to have reliable thermochemical data for its constituent canaries and ternaries first. In a series of articles, the authors have reported in detail the thermodynamic properties of liquid Al-Cu, Al-Ni, Cu-Ni, Cu-Zr, Al-Zr, Al-Cu-Ni, and Al-Cu-Zr alloys. This article deals with the direct calorimetric measurements of the partial and the integral enthalpies of mixing of liquid Ni-Zr and Cu-Ni-Zr alloys and the heat capacity of liquid Ni{sub 26}Zr{sub 74}. In a subsequent article, the authors will present similar data for the liquid ternary Al-Ni-Zr and for the liquid quaternary Al-Cu-Ni-Zr alloys.

  9. Deactivation Mechanism of Cu/Zeolite SCR Catalyst Due to Reductive Hydrothermal Aging

    Broader source: Energy.gov [DOE]

    Better control for preventing catalyst deactivation resulted from study of and proposed mechanism for deactivation of Cu/zeolite under rich conditions.

  10. Photoelectron spectroscopic study of the surface reactivity of the high T[c] material YBa?Cu?O? 

    E-Print Network [OSTI]

    Liu, Hong-Xia

    1988-01-01

    of the high T, Y-Ba-Cu-0 system . . . . . 1. 2. A review of the spectroscopic study of the Y-Ba-Cu-0 system. 1. 3. Properties of metal oxide surfaces. 1. 4. Influence of the effective escape depth of the electrons on surface studies . 1. 5. Objectives... extensive in the area of the high T, Y-Ba-Cu-0 system. 1. 1. Properties of the high T, Y-Ba-Cu-0 system The high T, Y-Ba-Cu-0 system is the single phase compound YBagCu309 8 with 5=2 (Cava et al 1987). It is an orthorhombically distorted perovskite...

  11. Fermi surface measurements in YBa sub 2 Cu sub 3 O sub 7-x and La sub 1. 874 Sr sub. 126 CuO sub 4

    SciTech Connect (OSTI)

    Howell, R.H.; Sterne, P.A.; Solal, F.; Fluss, M.J. ); Haghighi, H.; Kaiser, J.H.; Rayner, S.L.; West, R.N. ); Liu, J.Z; Shelton, R. ); Kojima, H. ); Kitazawa, K. )

    1991-06-25

    We report new, ultra high precision measurements of the electron-positron momentum spectra of YBa{sub 2}Cu{sub 3}O{sub 7-x} and La{sub 1.874}Sr{sub 126}CuO{sub 4}. The YBCO experiments were performed on twin free, single crystals and show discontinuities with the symmetry of the Fermi surface of the CuO chain bands. Conduction band and underlying features in LSCO share the same symmetry and can only be separated with the aid of LDA calculations. 5 refs., 3 figs.

  12. Spectroscopic characterization of some Cu(II) complexes

    SciTech Connect (OSTI)

    Singh, Puja, E-mail: sharma.shivadhar@gmail.com; Sharma, S., E-mail: sharma.shivadhar@gmail.com [University Department of Chemistry, Magadh University, Bodh-Gaya, 824234, Bihar (India)

    2014-10-15

    3-hydroxy-4-methoxy benzaldehyde semicarbazone (HMBS) is a biologically active compound which has several potential donor sites. This compound has been used for complexation with Cu(II) ions to synthesize complexes of general formula [Cu(HMBS){sub 2}X{sub 2}] where X is Cl{sup ?}, NO{sub 3}{sup ?} and CH{sub 3}COO{sup ?}. Cu(II) is a d{sup 9} system for which {sup 2}D term is generated. Under O{sub h} symmetry, this term splits into {sup 2}E{sub g} and {sup 2}T{sub 2g}. the ground term {sup 2}Eg is doubly degenerate and hence suffers strong Jahn-Teller effect and accordingly the further splitting of terms occur to lower the symmetry from perfect O{sub h}. Here, the ligand occupies four planar positions while the two axial positions have been varied by using different ions like Cl{sup ?}, NO{sub 3}{sup ?} and CH{sub 3}COO{sup ?}. These variations on the axial positions also add to the distortion in O{sub h} symmetry. Under strong distortion, the electronic spectral band splits into multiplets exhibiting tetragonal distortion in complexes. The extent of distortion has been derived by the derivation of the two radial parameters D{sub s} and D{sub t} from electronic spectral bands. The ESR spectra of complexes reveal the real position of the only unpaired electron of the d{sup 9} system in complexes.

  13. La??xSrxCuO? superconductor nanowire devices

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Litombe, N. E.; Bollinger, A. T.; Hoffman, J. E.; Bozovic, I.

    2014-07-02

    La??xSrxCuO? nanowire devices have been fabricated and characterized using electrical transport measurements. Nanowires with widths down to 80 nm are patterned using high-resolution electron beam lithography. However, the narrowest nanowires show incomplete superconducting transitions with some residual resistance at T = 4 K. Here, we report on refinement of the fabrication process to achieve narrower nanowire devices with complete superconducting transitions, opening the path to the study of novel physics arising from dimension-limited superconductivity on the nanoscale.

  14. Property:NEPA CU Document | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QAsource History ViewMayo,AltFuelVehicle2 Jump to: navigation, searchContDiv JumpTechDscType Jump to:CU Document

  15. J/psi production at high transverse momenta in p+p and Cu+Cu collisions at sqrt sNN = 200 GeV

    SciTech Connect (OSTI)

    STAR Collaboration; Abelev, B. I.

    2009-10-27

    The STAR collaboration at RHIC presents measurements of J/{psi} {yields} e{sup +}e{sup -} at mid-rapidity and high transverse momentum (p{sub T} > 5 GeV/c) in p+p and central Cu+Cu collisions at {radical}sNN = 200 GeV. The inclusive J/{psi} production cross section for Cu+Cu collisions is found to be consistent at high p{sub T} with the binary collision-scaled cross section for p+p collisions, in contrast to previous measurements at lower p{sub T}, where a suppression of J/{psi} production is observed relative to the expectation from binary scaling. Azimuthal correlations of J/{psi} with charged hadrons in p+p collisions provide an estimate of the contribution of B-meson decays to J/{psi} production of 13% {+-} 5%.

  16. $J/?$ production at low $p_T$ in Au+Au and Cu+Cu collisions at $\\sqrt{s_{_{NN}}}$ = 200 GeV at STAR

    E-Print Network [OSTI]

    STAR Collaboration; L. Adamczyk; J. K. Adkins; G. Agakishiev; M. M. Aggarwal; Z. Ahammed; I. Alekseev; J. Alford; C. D. Anson; A. Aparin; D. Arkhipkin; E. C. Aschenauer; G. S. Averichev; J. Balewski; A. Banerjee; Z. Barnovska; D. R. Beavis; R. Bellwied; A. Bhasin; A. K. Bhati; P. Bhattarai; H. Bichsel; J. Bielcik; J. Bielcikova; L. C. Bland; I. G. Bordyuzhin; W. Borowski; J. Bouchet; A. V. Brandin; S. G. Brovko; S. Bültmann; I. Bunzarov; T. P. Burton; J. Butterworth; H. Caines; M. Calderón de la Barca Sánchez; D. Cebra; R. Cendejas; M. C. Cervantes; P. Chaloupka; Z. Chang; S. Chattopadhyay; H. F. Chen; J. H. Chen; L. Chen; J. Cheng; M. Cherney; A. Chikanian; W. Christie; J. Chwastowski; M. J. M. Codrington; R. Corliss; J. G. Cramer; H. J. Crawford; X. Cui; S. Das; A. Davila Leyva; L. C. De Silva; R. R. Debbe; T. G. Dedovich; J. Deng; A. A. Derevschikov; R. Derradi de Souza; S. Dhamija; B. di Ruzza; L. Didenko; C. Dilks; F. Ding; P. Djawotho; X. Dong; J. L. Drachenberg; J. E. Draper; C. M. Du; L. E. Dunkelberger; J. C. Dunlop; L. G. Efimov; J. Engelage; K. S. Engle; G. Eppley; L. Eun; O. Evdokimov; R. Fatemi; S. Fazio; J. Fedorisin; P. Filip; E. Finch; Y. Fisyak; C. E. Flores; C. A. Gagliardi; D. R. Gangadharan; D. Garand; F. Geurts; A. Gibson; M. Girard; S. Gliske; D. Grosnick; Y. Guo; A. Gupta; S. Gupta; W. Guryn; B. Haag; O. Hajkova; A. Hamed; L-X. Han; R. Haque; J. W. Harris; J. P. Hays-Wehle; S. Heppelmann; A. Hirsch; G. W. Hoffmann; D. J. Hofman; S. Horvat; B. Huang; H. Z. Huang; P. Huck; T. J. Humanic; G. Igo; W. W. Jacobs; H. Jang; E. G. Judd; S. Kabana; D. Kalinkin; K. Kang; K. Kauder; H. W. Ke; D. Keane; A. Kechechyan; A. Kesich; Z. H. Khan; D. P. Kikola; I. Kisel; A. Kisiel; D. D. Koetke; T. Kollegger; J. Konzer; I. Koralt; W. Korsch; L. Kotchenda; P. Kravtsov; K. Krueger; I. Kulakov; L. Kumar; R. A. Kycia; M. A. C. Lamont; J. M. Landgraf; K. D. Landry; J. Lauret; A. Lebedev; R. Lednicky; J. H. Lee; W. Leight; M. J. LeVine; C. Li; W. Li; X. Li; X. Li; Y. Li; Z. M. Li; L. M. Lima; M. A. Lisa; F. Liu; T. Ljubicic; W. J. Llope; R. S. Longacre; X. Luo; G. L. Ma; Y. G. Ma; D. M. M. D. Madagodagettige Don; D. P. Mahapatra; R. Majka; S. Margetis; C. Markert; H. Masui; H. S. Matis; D. McDonald; T. S. McShane; N. G. Minaev; S. Mioduszewski; B. Mohanty; M. M. Mondal; D. A. Morozov; M. G. Munhoz; M. K. Mustafa; B. K. Nandi; Md. Nasim; T. K. Nayak; J. M. Nelson; L. V. Nogach; S. Y. Noh; J. Novak; S. B. Nurushev; G. Odyniec; A. Ogawa; K. Oh; A. Ohlson; V. Okorokov; E. W. Oldag; R. A. N. Oliveira; M. Pachr; B. S. Page; S. K. Pal; Y. X. Pan; Y. Pandit; Y. Panebratsev; T. Pawlak; B. Pawlik; H. Pei; C. Perkins; W. Peryt; P. Pile; M. Planinic; J. Pluta; D. Plyku; N. Poljak; J. Porter; A. M. Poskanzer; N. K. Pruthi; M. Przybycien; P. R. Pujahari; H. Qiu; A. Quintero; S. Ramachandran; R. Raniwala; S. Raniwala; R. L. Ray; C. K. Riley; H. G. Ritter; J. B. Roberts; O. V. Rogachevskiy; J. L. Romero; J. F. Ross; A. Roy; L. Ruan; J. Rusnak; N. R. Sahoo; P. K. Sahu; I. Sakrejda; S. Salur; A. Sandacz; J. Sandweiss; E. Sangaline; A. Sarkar; J. Schambach; R. P. Scharenberg; A. M. Schmah; W. B. Schmidke; N. Schmitz; J. Seger; P. Seyboth; N. Shah; E. Shahaliev; P. V. Shanmuganathan; M. Shao; B. Sharma; W. Q. Shen; S. S. Shi; Q. Y. Shou; E. P. Sichtermann; R. N. Singaraju; M. J. Skoby; D. Smirnov; N. Smirnov; D. Solanki; P. Sorensen; U. G. deSouza; H. M. Spinka; B. Srivastava; T. D. S. Stanislaus; J. R. Stevens; R. Stock; M. Strikhanov; B. Stringfellow; A. A. P. Suaide; M. Sumbera; X. Sun; X. M. Sun; Y. Sun; Z. Sun; B. Surrow; D. N. Svirida; T. J. M. Symons; A. Szanto de Toledo; J. Takahashi; A. H. Tang; Z. Tang; T. Tarnowsky; J. H. Thomas; A. R. Timmins; D. Tlusty; M. Tokarev; S. Trentalange; R. E. Tribble; P. Tribedy; B. A. Trzeciak; O. D. Tsai; J. Turnau; T. Ullrich; D. G. Underwood; G. Van Buren; G. van Nieuwenhuizen; J. A. Vanfossen, Jr.; R. Varma; G. M. S. Vasconcelos; A. N. Vasiliev; R. Vertesi; F. Videbæk; Y. P. Viyogi; S. Vokal; A. Vossen; M. Wada; M. Walker; F. Wang; G. Wang; H. Wang; J. S. Wang; X. L. Wang; Y. Wang; Y. Wang; G. Webb; J. C. Webb; G. D. Westfall; H. Wieman; S. W. Wissink; R. Witt; Y. F. Wu; Z. Xiao; W. Xie; K. Xin; H. Xu; N. Xu; Q. H. Xu; Y. Xu; Z. Xu; W. Yan; C. Yang; Y. Yang; Y. Yang; Z. Ye; P. Yepes; L. Yi; K. Yip; I-K. Yoo; Y. Zawisza; H. Zbroszczyk; W. Zha; Zhang; J. B. Zhang; S. Zhang; X. P. Zhang; Y. Zhang; Z. P. Zhang; F. Zhao; J. Zhao; C. Zhong; X. Zhu; Y. H. Zhu; Y. Zoulkarneeva; M. Zyzak

    2014-09-12

    The $\\jpsi$ $\\pt$ spectrum and nuclear modification factor ($\\raa$) are reported for $\\pt < 5 \\ \\gevc$ and $|y|<1$ from 0\\% to 60\\% central Au+Au and Cu+Cu collisions at $\\snn = 200 \\ \\gev$ at STAR. A significant suppression of $\\pt$-integrated $\\jpsi$ production is observed in central Au+Au events. The Cu+Cu data are consistent with no suppression, although the precision is limited by the available statistics. $\\raa$ in Au+Au collisions exhibits a strong suppression at low transverse momentum and gradually increases with $\\pt$. The data are compared to high-$\\pt$ STAR results and previously published BNL Relativistic Heavy Ion Collider results. Comparing with model calculations, it is found that the invariant yields at low $\\pt$ are significantly above hydrodynamic flow predictions but are consistent with models that include color screening and regeneration.

  17. In situ measurement of electromigration-induced transient stress in Pb-free Sn-Cu solder joints by synchrotron radiation based X-ray polychromatic microdiffraction

    E-Print Network [OSTI]

    Chen, Kai

    2009-01-01

    elastic stress in Pb-free SnCu solder joints was studied byeffective charge number for SnCu solder is calculated and

  18. In situ measurement of electromigration-induced transient stress in Pb-free Sn-Cu solder joints by synchrotron radiation based X-ray polychromatic microdiffraction

    E-Print Network [OSTI]

    Chen, Kai

    2011-01-01

    elastic stress in Pb-free SnCu solder joints was studied byeffective charge number for SnCu solder is calculated and

  19. Band offsets of n-type electron-selective contacts on cuprous oxide (Cu[subscript 2]O) for photovoltaics

    E-Print Network [OSTI]

    Brandt, Riley E.

    The development of cuprous oxide (Cu [subscript 2]O) photovoltaics (PVs) is limited by low device open-circuit voltages. A strong contributing factor to this underperformance is the conduction-band offset between Cu ...

  20. Residual Stress and Microstructure of Electroplated Cu Film on Different Barrier Layers Alex A. Volinsky1

    E-Print Network [OSTI]

    Volinsky, Alex A.

    Residual Stress and Microstructure of Electroplated Cu Film on Different Barrier Layers Alex A.2 and 2 microns were electroplated on adhesion-promoting TiW and Ta barrier layers on single crystal from a leading semiconductor manufacturer such as Motorola that contains electroplated Cu interconnects

  1. Interaction of CuS and sulfur in Li-S battery system

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Sun, Ke; Su, Dong; Zhang, Qing; Bock, David C.; Marschilok, Amy C.; Takeuchi, Kenneth J.; Takeuchi, Esther S.; Gan, Hong

    2015-10-27

    Lithium-Sulfur (Li-S) battery has been a subject of intensive research in recent years due to its potential to provide much higher energy density and lower cost than the current state of the art lithiumion battery technology. In this work, we have investigated Cupric Sulfide (CuS) as a capacitycontributing conductive additive to the sulfur electrode in a Li-S battery. Galvanostatic charge/discharge cycling has been used to compare the performance of both sulfur electrodes and S:CuS hybrid electrodes with various ratios. We found that the conductive CuS additive enhanced the utilization of the sulfur cathode under a 1C rate discharge. However, undermore »a C/10 discharge rate, S:CuS hybrid electrodes exhibited lower sulfur utilization in the first discharge and faster capacity decay in later cycles than a pure sulfur electrode due to the dissolution of CuS. The CuS dissolution is found to be the result of strong interaction between the soluble low order polysulfide Li2S3 and CuS. As a result, we identified the presence of conductive copper-containing sulfides at the cycled lithium anode surface, which may degrade the effectiveness of the passivation function of the solid-electrolyte-interphase (SEI) layer, accounting for the poor cycling performance of the S:CuS hybrid cells at low rate.« less

  2. Growth and magnetic property of antiperovskite manganese nitride films doped with Cu by molecular beam epitaxy

    SciTech Connect (OSTI)

    Yu, Fengmei; Ren, Lizhu; Meng, Meng; Wang, Yunjia; Yang, Mei; Wu, Shuxiang; Li, Shuwei

    2014-04-07

    Manganese nitrides thin films on MgO (100) substrates with and without Cu-doping have been fabricated by plasma assisted molecular beam epitaxy. Antiperovskite compounds Mn{sub 3.6}Cu{sub 0.4}N have been grown in the case of Cu-doping, and the pure Mn{sub 3}N{sub 2} single crystal has been obtained without Cu-doping. The Mn{sub 3.6}Cu{sub 0.4}N exhibits ferrimagnetism, and the magnetization of Mn{sub 3.6}Cu{sub 0.4}N increases upon the temperature decreasing from 300?K to 5?K, similar to Mn{sub 4}N. The exchange bias (EB) effects emerge in the Mn{sub 3.6}Cu{sub 0.4}N films. The EB behavior is originated from the interfaces between ferrimagnetic Mn{sub 3.6}Cu{sub 0.4}N and antiferromagnetic metal Mn, which is verified to be formed by the data of x-ray photoelectron spectroscopy. The present results not only provide a strategy for producing functional antiperovskite manganese nitrides, but also shed promising light on fabricating the exchange bias part of spintronic devices.

  3. Ab-initio study of donor-acceptor codoping for n-type CuO

    SciTech Connect (OSTI)

    Peng, Yuan; Wang, Junling, E-mail: jlwang@ntu.edu.sg [School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798 (Singapore); Zheng, Jianwei [Institute of High Performance Computing, 1 Fusionopolis Way, #16-16 Connexis, Singapore 138632 (Singapore); Wu, Ping [Engineering Product Development, Singapore University of Technology and Design, 20 Dover Drive, Singapore 138682 (Singapore)

    2014-10-28

    Single n-type dopant in CuO has either a deep donor level or limited solubility, inefficient in generating free electrons. We have performed ab-initio study of the donor-acceptor codoping to obtain n-type CuO. Our results show that N codoping can slightly improve the donor level of Zr and In by forming shallower n-type complexes (Zr{sub Cu}-N{sub O} and 2In{sub Cu}-N{sub O}), but their formation energies are too high to be realized in experiments. However, Li codoping with Al and Ga is found to be relatively easy to achieve. 2Al{sub Cu}-Li{sub Cu} and 2Ga{sub Cu}-Li{sub Cu} have shallower donor levels than single Al and Ga by 0.14?eV and 0.08?eV, respectively, and their formation energies are reasonably low to act as efficient codopants. Moreover, Li codoping with both Al and Ga produce an empty impurity band just below the host conduction band minimum, which may reduce the donor ionization energy at high codoping concentrations.

  4. DISSERTATION ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE

    E-Print Network [OSTI]

    Sites, James R.

    i DISSERTATION ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT Submitted ENTITLED `ANTICIPATED PERFORMANCE OF Cu(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT' BE ACCEPTED(In,Ga)Se2 SOLAR CELLS IN THE THIN-FILM LIMIT The demand for alternative sources of energy is rapidly

  5. Chemisorption of benzene and STM dehydrogenation products on Cu,,100... N. Lorente*

    E-Print Network [OSTI]

    Persson, Mats

    Chemisorption of benzene and STM dehydrogenation products on Cu,,100... N. Lorente* Laboratoire of individual chemisorbed benzene molecules on Cu 100 has recently been performed in atomic manipulation experiments J. Phys. Chem. A. 104, 2463 2000 ; Surf. Sci 451, 219 2000 . Benzene dissociates under controlled

  6. Adsorption of Benzene, Fluorobenzene and Meta-di-Fluorobenzene on Cu(110): A Computational Study

    E-Print Network [OSTI]

    Gao, Hongjun

    Adsorption of Benzene, Fluorobenzene and Meta-di-Fluorobenzene on Cu(110): A Computational Study L.interscience.wiley.com). Abstract: We modelled the adsorption of benzene, fluorobenzene and meta-di-fluorobenzene on Cu(110) by Den geometry is favoured. Function- alizing the benzene ring with one or two fluorine atoms weakens the bonding

  7. Photoelectron imaging spectroscopy of Cu (H2O)1,2 anion complexes

    E-Print Network [OSTI]

    Lineberger, W. Carl

    structure calculations for the neutral, the adiabatic electron affinity is derived. Ó 2004 Elsevier B.V. All rights reserved. 1. Introduction Recent experiments [1] and calculations [2,3] of the structure and rearrangement dynamics of CuH2O fol- lowing electron photodetachment from CuÀ H2O have afforded considerable

  8. Field-induced cation migration in Cu oxide films by in situ scanning tunneling microscopy

    E-Print Network [OSTI]

    Wang, Gwo-Ching

    into the oxide, and Al cations in the oxide layer rapidly diffused away.14 Field-induced ion migration substrate was cleaned by the RCA method and a thin oxide layer was grown on the Si surface. The Cu film. The formation of an oxide layer on Cu thin film was examined by x-ray photoelectron spectroscopy XPS in another

  9. DISSERTATION Role of the Cu-O Defect in CdTe Solar Cells

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION Role of the Cu-O Defect in CdTe Solar Cells Submitted by Caroline R. Corwine OF THE CU-O DEFECT COMPLEX IN CDTE SOLAR CELLS Thin-film CdTe is one of the leading materials used in photovoltaic (PV) solar cells. One way to improve device performance and stability is through understanding how

  10. Evolution of Graphene Growth on Ni and Cu by Carbon Isotope Labeling

    E-Print Network [OSTI]

    and acceptance by the semiconductor industry, Ni and Cu have received the most attention as a graphene substrateEvolution of Graphene Growth on Ni and Cu by Carbon Isotope Labeling Xuesong Li, Weiwei Cai, Luigi Instruments Incorporated, Dallas, Texas 75243 Received August 3, 2009 ABSTRACT Large-area graphene growth

  11. 2 Gbps SerDes Design Based on IBM Cu-11 (130nm) Standard Cell Technology

    E-Print Network [OSTI]

    Draper, Jeff

    2 Gbps SerDes Design Based on IBM Cu-11 (130nm) Standard Cell Technology Rashed Zafar Bhatti EE Denneau IBM T.J. Watson Research Center Yorktown Heights, NY 10598 denneau@us.ibm.com Jeff Draper of jitter. Power consumption of the proposed SerDes design is 30 mW per serial link targeted to IBM Cu-11

  12. RETENTION OF Cd, Cu, Pb AND Zn BY WOOD ASH, LIME AND FUME DUST

    E-Print Network [OSTI]

    Ma, Lena

    RETENTION OF Cd, Cu, Pb AND Zn BY WOOD ASH, LIME AND FUME DUST TAIT CHIRENJE1 , LENA Q. MA2 and ecosystem health. This study investigated the effectiveness of wood ash in immobilizing the heavy metals Pb, Cd, Cu and Zn from aqueous solutions. The effects of initial metal concentrations, solution pH, ash

  13. Development of a Low Cost Insulated Foil Substrate for Cu(InGaSe)2 Photovoltaics

    SciTech Connect (OSTI)

    ERTEN ESER

    2012-01-22

    The project validated the use of stainless steel flexible substrate coated with silicone-based resin dielectric, developed by Dow Corning Corporation, for Cu(InGa)Se2 based photovoltaics. The projects driving force was the high performance of Cu(InGa)Se2 based photovoltaics coupled with potential cost reduction that could be achieved with dielectric coated SS web substrate.

  14. Effect of doping in Bi-Pb-Sr-Ca-Cu-O superconductor composites 

    E-Print Network [OSTI]

    Ertekin, Abdullah

    2001-01-01

    The goal of this thesis is to analyze the solid solubility limit of dopants in Bi-Pb-Sr-Ca-Cu-O superconductors. We have studied the effect of Mn doping Bi-Pb-Sr-Ca-Cu-O. The electrical resistivity and critical temperature were measured for samples...

  15. CU scientists amongst recipients of awards and grants bestowed by Neuron

    E-Print Network [OSTI]

    Cerveny, Vlastislav

    CU scientists amongst recipients of awards and grants bestowed by Neuron Compiled 4.12.2013 23:35:59 by Document Globe ® 1 CU scientists amongst recipients of awards and grants bestowed by Neuron Foundation Neuron Award for Lifelong Achievement. During their presentation at Malostranská beseda on 5 November

  16. Cu, Cr and As distribution in soils adjacent to pressure-treated decks, fences and poles

    E-Print Network [OSTI]

    Ma, Lena

    Cu, Cr and As distribution in soils adjacent to pressure-treated decks, fences and poles Tait with depth in areas close to CCA-treated poles. Abstract Chromated copper arsenate (CCA)-treated wood has), and copper (Cu), in soils surrounding CCA-treated wood structures such as decks, fences and poles; and (2

  17. Measurement of K0S and K*0 in p+p, d+Au, and Cu+Cu collisions at sqrt SNN = 200 GeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Adare, A.; Aidala, C.

    2014-11-01

    The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of K0S and K*0 meson production at midrapidity in p+p, d+Au, and Cu+Cu collisions at sqrt SNN = 200 GeV. The K0S and K*0 mesons are reconstructed via their K0S and ?0(???)?0 (???) and K*0 ? K ±#25;?± decay modes, respectively. The measured transverse-momentum spectra are used to determine the nuclear modification factor of K0S and K*0 mesons in d+Au and Cu+Cu collisions at different centralities. In the d+Au collisions, the nuclear modification factor of K0S and K*0 mesons is almost constant as a function ofmore »transverse momentum and is consistent with unity showing that cold-nuclear-matter effects do not play a significant role in the measured kinematic range. In Cu+Cu collisions, within the uncertainties no nuclear modification is registered in peripheral collisions. In central collisions, both mesons show suppression relative to the expectations from the p+p yield scaled by the number of binary nucleon-nucleon collisions in the Cu+Cu system. In the pT range 2–5 GeV/c, the strange mesons ( K0S, K*0) similarly to the #30;? meson with hidden strangeness, show an intermediate suppression between the more suppressed light quark mesons (?0) and the nonsuppressed baryons (p, p-bar). At higher transverse momentum, pT > 5 GeV/c, production of all particles is similarly suppressed by a factor of ?2. (auth)« less

  18. Measurement of K0S and K*0 in p+p, d+Au, and Cu+Cu collisions at sqrt SNN = 200 GeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Adare, A. [Univ. of Colorado, Boulder, CO (United States); Aidala, C. [Columbia Univ., New York, NY (United States). et al.

    2014-11-01

    The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of K0S and K*0 meson production at midrapidity in p+p, d+Au, and Cu+Cu collisions at sqrt SNN = 200 GeV. The K0S and K*0 mesons are reconstructed via their K0S and ?0(???)?0 (???) and K*0 ? K ±#25;?± decay modes, respectively. The measured transverse-momentum spectra are used to determine the nuclear modification factor of K0S and K*0 mesons in d+Au and Cu+Cu collisions at different centralities. In the d+Au collisions, the nuclear modification factor of K0S and K*0 mesons is almost constant as a function of transverse momentum and is consistent with unity showing that cold-nuclear-matter effects do not play a significant role in the measured kinematic range. In Cu+Cu collisions, within the uncertainties no nuclear modification is registered in peripheral collisions. In central collisions, both mesons show suppression relative to the expectations from the p+p yield scaled by the number of binary nucleon-nucleon collisions in the Cu+Cu system. In the pT range 2–5 GeV/c, the strange mesons ( K0S, K*0) similarly to the #30;? meson with hidden strangeness, show an intermediate suppression between the more suppressed light quark mesons (?0) and the nonsuppressed baryons (p, p-bar). At higher transverse momentum, pT > 5 GeV/c, production of all particles is similarly suppressed by a factor of ?2. (auth)

  19. Mechanical properties of Al-Cu alloy-SiC composites

    SciTech Connect (OSTI)

    Anggara, B. S., E-mail: anggorobs1960@yahoo.com [Jurusan Fisika, FMIPA Universitas Negeri Jakarta, Indonesia 13220 and PPS Ilmu Material, Department Fisika, FMIPA, Universitas Indonesia (Indonesia); Handoko, E. [Jurusan Fisika, FMIPA Universitas Negeri Jakarta, 13220 (Indonesia); Soegijono, B. [PPS Ilmu Material, Department Fisika, FMIPA, Universitas Indonesia (Indonesia)

    2014-09-25

    The synthesis of aluminum (Al) alloys, Al-Cu, from mixture 96.2 % Al and 3.8 % Cu has been prepared by melting process at a temperature of 1200°C. The adding 12.5 wt% up to 20 wt% of SiC on Al-Cu alloys samples has been investigated. The structure analyses were examined by X-Ray Diffractometer (XRD) and scanning electron microscope (SEM). Moreover, the morphology of Al-Cu alloys has been seen as structure in micrometer range. The hardness was measured by hardness Vickers method. According to the results, it can be assumed that the 15 wt% of SiC content is prefer content to get better quality of back to back hardness Vickers of Al-Cu alloys.

  20. First results about hydrogen loading by means of pulsed electrolysis of Y$_{1}$Ba$_{2}$Cu$_{3}$O$_{7}$ pellets

    E-Print Network [OSTI]

    Celani, F; Di Gioacchino, D; Spallone, A; Tripodi, P; Pace, S; Polichetti, M; Marini, P

    1994-01-01

    First results about hydrogen loading by means of pulsed electrolysis of Y$_{1}$Ba$_{2}$Cu$_{3}$O$_{7}$ pellets

  1. CuInSe/sub 2/-based photoelectrochemical cells: their use in characterization of thin CuInSe/sub 2/ films, and as photovoltaic cells per se

    SciTech Connect (OSTI)

    Cahen, D.; Chen, Y.W.; Ireland, P.J.; Noufi, R.; Turner, J.A.; Rincon, C.; Bachmann, K.J.

    1984-05-01

    Photoelectrochemistry has been employed to characterize the p-CuInSe/sub 2/ component of the CdS/CuInSe/sub 2/ on-metal and a nonaqueous electrolyte containing a redox couple not specifically adsorbed onto the semiconductor, we can test the films for photovoltaic activity and obtain effective electronic properties of them, before CdS deposition, in a nondestructive manner. Electrochemical decomposition of CuInSe/sub 2/ was investigated in acetonitrile solutions to determine the mechanism of decomposition (n and p) in the dark and under illumination. Electrochemical, solution chemical and surface analyses confirmed at the light-assisted decomposition of CuInSe/sub 2/ resulted in metal ions and elemental chalcogen. On the basis of the results from the electrochemical decomposition, and studies on the solid state chemistry of the (Cu/sub 2/Se)/sub x/(In/sub 2/Se/sub 3/)/sub 1-x/ system and surface analyses, the CuInSe/sub 2//polyiodide interface was stabilized and up to 11.7% conversion efficiencies were obtained.

  2. Directed and elliptic flow of charged particles in Cu+Cu collisions at $\\sqrt{\\bm {s_{NN}}} =$ 22.4 GeV

    E-Print Network [OSTI]

    G. Agakishiev; M. M. Aggarwal; Z. Ahammed; A. V. Alakhverdyants; I. Alekseev; J. Alford; B. D. Anderson; C. D. Anson; D. Arkhipkin; G. S. Averichev; J. Balewski; D. R. Beavis; N. K. Behera; R. Bellwied; M. J. Betancourt; R. R. Betts; A. Bhasin; A. K. Bhati; H. Bichsel; J. Bielcik; J. Bielcikova; L. C. Bland; I. G. Bordyuzhin; W. Borowski; J. Bouchet; E. Braidot; A. V. Brandin; A. Bridgeman; S. G. Brovko; E. Bruna; S. Bueltmann; I. Bunzarov; T. P. Burton; X. Z. Cai; H. Caines; M. Calderón de la Barca Sánchez; D. Cebra; R. Cendejas; M. C. Cervantes; P. Chaloupka; S. Chattopadhyay; H. F. Chen; J. H. Chen; J. Y. Chen; L. Chen; J. Cheng; M. Cherney; A. Chikanian; K. E. Choi; W. Christie; P. Chung; M. J. M. Codrington; R. Corliss; J. G. Cramer; H. J. Crawford; Cui; A. Davila Leyva; L. C. De Silva; R. R. Debbe; T. G. Dedovich; J. Deng; A. A. Derevschikov; R. Derradi de Souza; L. Didenko; P. Djawotho; S. M. Dogra; X. Dong; J. L. Drachenberg; J. E. Draper; C. M. Du; J. C. Dunlop; L. G. Efimov; M. Elnimr; J. Engelage; G. Eppley; M. Estienne; L. Eun; O. Evdokimov; R. Fatemi; J. Fedorisin; R. G. Fersch; P. Filip; E. Finch; V. Fine; Y. Fisyak; C. A. Gagliardi; D. R. Gangadharan; F. Geurts; P. Ghosh; Y. N. Gorbunov; A. Gordon; O. G. Grebenyuk; D. Grosnick; A. Gupta; S. Gupta; W. Guryn; B. Haag; O. Hajkova; A. Hamed; L-X. Han; J. W. Harris; J. P. Hays-Wehle; M. Heinz; S. Heppelmann; A. Hirsch; E. Hjort; G. W. Hoffmann; D. J. Hofman; B. Huang; H. Z. Huang; T. J. Humanic; L. Huo; G. Igo; P. Jacobs; W. W. Jacobs; C. Jena; F. Jin; J. Joseph; E. G. Judd; S. Kabana; K. Kang; J. Kapitan; K. Kauder; H. W. Ke; D. Keane; A. Kechechyan; D. Kettler; D. P. Kikola; J. Kiryluk; A. Kisiel; V. Kizka; S. R. Klein; A. G. Knospe; D. D. Koetke; T. Kollegger; J. Konzer; I. Koralt; L. Koroleva; W. Korsch; L. Kotchenda; V. Kouchpil; P. Kravtsov; K. Krueger; M. Krus; L. Kumar; M. A. C. Lamont; J. M. Landgraf; S. LaPointe; J. Lauret; A. Lebedev; R. Lednicky; J. H. Lee; W. Leight; M. J. LeVine; C. Li; L. Li; N. Li; W. Li; X. Li; X. Li; Y. Li; Z. M. Li; 1 L. M. Lima; M. A. Lisa; F. Liu; H. Liu; J. Liu; T. Ljubicic; W. J. Llope; R. S. Longacre; Y. Lu; E. V. Lukashov; X. Luo; G. L. Ma; Y. G. Ma; D. P. Mahapatra; R. Majka; O. I. Mall; R. Manweiler; S. Margetis; C. Markert; H. Masui; H. S. Matis; D. McDonald; T. S. McShane; A. Meschanin; R. Milner; N. G. Minaev; S. Mioduszewski; M. K. Mitrovski; Y. Mohammed; B. Mohanty; M. M. Mondal; B. Morozov; D. A. Morozov; M. G. Munhoz; M. K. Mustafa; M. Naglis; B. K. Nandi; T. K. Nayak; L. V. Nogach; S. B. Nurushev; G. Odyniec; A. Ogawa; K. Oh; A. Ohlson; V. Okorokov; E. W. Oldag; R. A. N. Oliveira; D. Olson; M. Pachr; B. S. Page; S. K. Pal; Y. Pandit; Y. Panebratsev; T. Pawlak; H. Pei; T. Peitzmann; C. Perkins; W. Peryt; P. Pile; M. Planinic; M. A. Ploskon; J. Pluta; D. Plyku; N. Poljak; J. Porter; A. M. Poskanzer; B. V. K. S. Potukuchi; C. B. Powell; D. Prindle; C. Pruneau; N. K. Pruthi; P. R. Pujahari; J. Putschke; H. Qiu; R. Raniwala; S. Raniwala; R. L. Ray; R. Redwine; R. Reed; H. G. Ritter; J. B. Roberts; O. V. Rogachevskiy; J. L. Romero; L. Ruan; J. Rusnak; N. R. Sahoo; I. Sakrejda; S. Salur; J. Sandweiss; E. Sangaline; A. Sarkar; J. Schambach; R. P. Scharenberg; J. Schaub; A. M. Schmah; N. Schmitz; T. R. Schuster; J. Seele; J. Seger; I. Selyuzhenkov; P. Seyboth; N. Shah; E. Shahaliev; M. Shao; M. Sharma; S. S. Shi; Q. Y. Shou; E. P. Sichtermann; F. Simon; R. N. Singaraju; M. J. Skoby; N. Smirnov; D. Solanki; P. Sorensen; U. G. deSouza; H. M. Spinka; B. Srivastava; T. D. S. Stanislaus; S. G. Steadman; J. R. Stevens; R. Stock; M. Strikhanov; B. Stringfellow; A. A. P. Suaide; M. C. Suarez; N. L. Subba; M. Sumbera; X. M. Sun; Y. Sun; Z. Sun; B. Surrow; D. N. Svirida; T. J. M. Symons; A. Szanto de Toledo; J. Takahashi; A. H. Tang; Z. Tang; L. H. Tarini; T. Tarnowsky; D. Thein; J. H. Thomas; J. Tian; A. R. Timmins; D. Tlusty; M. Tokarev; S. Trentalange; R. E. Tribble; P. Tribedy; B. A. Trzeciak; O. D. Tsai; T. Ullrich; D. G. Underwood; G. Van Buren; G. van Nieuwenhuizen; J. A. Vanfossen, Jr.; R. Varma; G. M. S. Vasconcelos; A. N. Vasiliev; F. Videbæk; Y. P. Viyogi; S. Vokal; S. A. Voloshin; M. Wada; M. Walker; F. Wang; G. Wang; H. Wang; J. S. Wang; Q. Wang; X. L. Wang; Y. Wang; G. Webb; J. C. Webb; G. D. Westfall; C. Whitten Jr.; H. Wieman; S. W. Wissink; R. Witt; W. Witzke; Y. F. Wu; Z. Xiao; W. Xie; H. Xu; N. Xu; Q. H. Xu; W. Xu; Y. Xu; Z. Xu; L. Xue; Y. Yang; Y. Yang; P. Yepes; K. Yip; I-K. Yoo; M. Zawisza; H. Zbroszczyk; W. Zhan; J. B. Zhang; S. Zhang; W. M. Zhang; X. P. Zhang; Y. Zhang; Z. P. Zhang; F. Zhao; J. Zhao; C. Zhong; X. Zhu; Y. H. Zhu; Y. Zoulkarneeva

    2011-12-07

    This paper reports results for directed flow $v_{1}$ and elliptic flow $v_{2}$ of charged particles in Cu+Cu collisions at $\\sqrt{s_{NN}}=$ 22.4 GeV at the Relativistic Heavy Ion Collider. The measurements are for the 0-60% most central collisions, using charged particles observed in the STAR detector. Our measurements extend to 22.4 GeV Cu+Cu collisions the prior observation that $v_1$ is independent of the system size at 62.4 and 200 GeV, and also extend the scaling of $v_1$ with $\\eta/y_{\\rm beam}$ to this system. The measured $v_2(p_T)$ in Cu+Cu collisions is similar for $\\sqrt{s_{NN}} = 22.4-200$ GeV. We also report a comparison with results from transport model (UrQMD and AMPT) calculations. The model results do not agree quantitatively with the measured $v_1(\\eta), v_2(p_T)$ and $v_2(\\eta)$.

  3. Three 3D hybrid networks based on octamolybdates and different Cu{sup I}/Cu{sup II}-bis(triazole) motifs

    SciTech Connect (OSTI)

    Zhang, Chun-Jing; Pang, Hai-Jun; Tang, Qun; Wang, Hui-Yuan; Chen, Ya-Guang

    2010-12-15

    Three 3D compounds based on octamolybdate clusters and various Cu{sup I}/Cu{sup II}-bis(triazole) motifs, [Cu{sup I}{sub 2}btb][{beta}-Mo{sub 8}O{sub 26}]{sub 0.5} (1), [Cu{sup I}{sub 2}btpe][{beta}-Mo{sub 8}O{sub 26}]{sub 0.5} (2), and [Cu{sup II}(btpe){sub 2}][{beta}-Mo{sub 8}O{sub 26}]{sub 0.5} (3) [btb=1,4-bis(1,2,4-triazol-1-yl)butane, btpe=1,5-bis(1,2,4-triazol-1-yl)pentane], were isolated via tuning flexible ligand spacer length and metal coordination preferences. In 1, the copper(I)-btb motif is a one-dimensional (1D) chain which is further linked by hexadentate {beta}-[Mo{sub 8}O{sub 26}]{sup 4-} clusters via coordinating to Cu{sup I} cations giving a 3D structure. In 2, the copper(I)-btpe motif exhibits a 'stairs'-like [Cu{sup I}{sub 2}btpe]{sup 2+} sheet, and the tetradentate {beta}-[Mo{sub 8}O{sub 26}]{sup 4-} clusters interact with two neighboring [Cu{sup I}{sub 2}btpe]{sup 2+} sheets constructing a 3D framework. In 3, the copper(II)-btpe motif possesses a novel (2D{yields}3D) interdigitated structure, which is further connected by the tetradentate {beta}-[Mo{sub 8}O{sub 26}]{sup 4-} clusters forming a 3D framework. The thermal stability and luminescent properties of 1-3 are investigated in the solid state. -- Graphical abstract: Three 3D compounds based on {beta}-[Mo{sub 8}O{sub 26}]{sup 4-} clusters with different Cu{sup I}/Cu{sup II}-bis(triazole) motifs were synthesized by regularly tuning flexible ligand spacer length and metal coordination preferences. Display Omitted

  4. Kondo interactions from band reconstruction in YbInCu?

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Jarrige, I.; Kotani, A.; Yamaoka, H.; Tsujii, N.; Ishii, K.; Upton, M.; Casa, D.; Kim, J.; Gog, T.; Hancock, J. N.

    2015-03-27

    We combine resonant inelastic X-ray scattering (RIXS) and model calculations in the Kondo lattice compound YbInCu?, a system characterized by a dramatic increase in Kondo temperature and associated valence fluctuations below a first-order valence transition at T?42 K. The bulk-sensitive, element-specific, and valence-projected charge excitation spectra reveal an unusual quasi-gap in the Yb-derived state density which drives an instability of the electronic structure and renormalizes the low-energy effective Hamiltonian at the transition. Our results provide long-sought experimental evidence for a link between temperature-driven changes in the low-energy Kondo scale and the higher-energy electronic structure of this system.

  5. Thermal chemistry of the Cu-KI5 atomic layer deposition precursor on a copper surface

    SciTech Connect (OSTI)

    Ma, Qiang; Zaera, Francisco, E-mail: zaera@ucr.edu [Department of Chemistry, University of California, Riverside, California 92521 (United States)

    2015-01-01

    The thermal chemistry of a Cu(I) ketoiminate complex, Cu-KI5, resulting from the modification of the known Air Products CupraSelect{sup ®} copper CVD precursor Cu(hfac)(tmvs) designed to tether the two ligands via an isopropoxide linker, was studied under ultrahigh vacuum on a Cu(110) single-crystal surface by using a combination of temperature programmed desorption (TPD) and x-ray photoelectron spectroscopy. Adsorption at low temperatures was determined to take place via the displacement of the vinyl ligand by the surface. Molecular desorption was seen at 210?K, and the evolution of Cu(II)-KI5{sub 2} was established to take place at 280?K, presumably from a disproportionation reaction that also leads to the deposition of Cu(0). Other sets of desorption products were seen at 150, 250, and 430?K, all containing copper atoms and small organic moieties with molecular masses below 100 amu. The latter TPD peak in particular indicates significant fragmentation of the ligands, likely at the C–N bond that holds the vinylsilane-isopropoxide moiety tethered to the ketoimine fragment, and possibly also at the union between the vinylsilane and the alkoxide linker. The 430?K temperature measured for this chemistry may set an upper limit for clean Cu film deposition, but since reactivity on the surface was also found to be inhibited at higher surface coverages, it may be delayed to higher temperatures under atomic layer deposition conditions.

  6. Isothermal Solid-State Transformation Kinetics Applied to Pd/Cu Alloy Membrane Fabrication

    SciTech Connect (OSTI)

    Pomerantz, Natalie L; Payzant, E Andrew; Ma, Yi Hua

    2010-01-01

    In this work, time-resolved, in situ high-temperature X-ray diffraction (HT-XRD) was used to study the solid-state transformation kinetics of the formation of the fcc Pd/Cu alloy from Pd/Cu bi-layers for the purpose of fabricating sulfur tolerant Pd/Cu membranes for H2 separation. Thin layers of Pd and Cu (total ~15 wt% Cu) were deposited on porous stainless steel (PSS) with the electroless deposition method and annealed in H2 at 500, 550 and 600 C. The kinetics of the annealing process were successfully described by the Avrami nucleation and growth model showing that the annealing process was diffusion controlled and one dimensional. The activation energy for the solid-state transformation was 175 kJ/mol, which was similar to the activation energy of Pd-Cu bulk interdiffusion. Furthermore, the Avrami model was able to successfully describe the changes in permeance and activation energy observed in Pd/Cu alloy membranes during characterization as they were annealed at high temperatures.

  7. Davis-gary Hall - 2 

    E-Print Network [OSTI]

    Photographer, if not known, put Unknown

    2009-01-01

    , Michael Edwards Lisako E. McKyer Head of Department, Gary Ellis May 2012 Major Subject: Recreation, Park and Tourism Sciences iii ABSTRACT Youth, Art, and Life on the Border: An Examination of Coping and Support among Participants in a... in their development. One such resource is the opportunity to engage with non-parental caring adults, who provide youth a chance to build a supportive social network (Scales, Benson, Leffert, & Blyth, 2000). OST programs are also beneficial to youth because...

  8. Davis Bike Loop BIKING TOUR

    E-Print Network [OSTI]

    Ullrich, Paul

    Certified Platinum LEEDTM Certified Gold LEEDTM Registered Composting Recycling Multi-Bin Zero Waste Capable, and Food Science Laboratory Experimental College Community Garden Ruth Risdon Storer Garden Shields Oak and green building, food, landscapes and water conservation, campus community, and more. Student

  9. Eukaryotic Gene Prediction Kelli Davies

    E-Print Network [OSTI]

    -scale genome sequencing has revolutionized the field of genetics and biology. Sequencing projects require sophisticated computational analysis to manage vast collections of data. Scientists first sequenced a genome, coding genes comprise 95% of the genome.1 Since then, numerous prokaryotic and eukaryotic genomes have

  10. DAVI America | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on QA:QA J-E-1 SECTIONRobertsdale, Alabama (UtilityInstruments Inc Jump to: navigation,(RECP) in DevelopingOils Plc

  11. Phosphorescence quenching by mechanical stimulus in CaZnOS:Cu

    SciTech Connect (OSTI)

    Tu, Dong; Kamimura, Sunao [National Institute of Advanced Industrial Science and Technology (AIST), Saga 841-0052 (Japan); Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580 (Japan); Xu, Chao-Nan, E-mail: cn-xu@aist.go.jp [National Institute of Advanced Industrial Science and Technology (AIST), Saga 841-0052 (Japan); Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, Fukuoka 816-8580 (Japan); International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University, Fukuoka 819-0395 (Japan); Fujio, Yuki; Sakata, Yoshitaro [National Institute of Advanced Industrial Science and Technology (AIST), Saga 841-0052 (Japan); Ueno, Naohiro [National Institute of Advanced Industrial Science and Technology (AIST), Saga 841-0052 (Japan); Graduate School of Science and Engineering, Saga University, Saga 840-8502 (Japan)

    2014-07-07

    We have found that phosphorescence intensity of CaZnOS:Cu decreased visibly under an applied load. This mechanical quenching (MQ) of phosphorescence in CaZnOS:Cu corresponded to the mechanical stimuli. We have thus demonstrated that the MQ of CaZnOS:Cu could be used for visualizing stress distributions in practical applications. We propose that MQ arises from non-radiative recombination due to electron-transfer from trap levels to non-radiative centers as a result of the mechanical load.

  12. On the origins of hardness of Cu–TiN nanolayered composites

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Pathak, S.; Li, N.; Maeder, X.; Hoagland, R. G.; Baldwin, J. K.; Michler, J.; Misra, A.; Wang, J.; Mara, N. A.

    2015-07-18

    We investigated the mechanical response of physical vapor deposited Cu–TiN nanolayered composites of varying layer thicknesses from 5 nm to 200 nm. Both the Cu and TiN layers were found to consist of single phase nanometer sized grains. The grain sizes in the Cu and TiN layers, measured using transmission electron microscopy and X-ray diffraction, were found to be comparable to or smaller than their respective layer thicknesses. Indentation hardness testing revealed that the hardness of such nanolayered composites exhibits a weak dependence on the layer thickness but is more correlated to their grain size.

  13. Phase relationships in the BaO-Y?O?-Cu-O system 

    E-Print Network [OSTI]

    Hegg, Turi

    1989-01-01

    -Cu ? 0 Febr. 1988 Jan. 1988 Febr. 1987 80 liquid N2 80 40 20 Pb Hg La-Sr ? Cu ? 0 NbaGe Nb- Al- Ge NbN Nb0 NQSn Nb Jan. 1987 (under pressure) Dec. 1988 April 1986 ~ La-Ba-Cu-0 Jan. 1988 0 1910 1930 1950 1970 1990 Figure 7... time temperature transforma- tion (TTT) diagram in air, as shown in Figure 14, which shape suggests that / / ORTHORHOMBIC g / E IZ + 10' cc n. Z X 0 X = 6. 8 / TETRAGONAL 0 P ~ / / / / 10 2 6. 6/ 66 64 63 62 I 0 OM I 6. 1 500 600...

  14. Structural relaxation and nanoindentation response in Zr-Cu-Ti amorphous thin films

    SciTech Connect (OSTI)

    Chou, H. S.; Huang, J. C.; Chang, L. W. [Department of Materials and Optoelectronic Science, Center for Nanoscience and Nanotechnology, National Sun Yat-Sen University, Kaohsiung 804, Taiwan (China); Nieh, T. G. [Department of Materials Science and Engineering, University of Tennessee, Knoxville, Tennessee 37996 (United States)

    2008-11-10

    Ternary Zr-Cu-Ti system, especial with a high Ti content, is normally difficult to be fully vitrified. In this paper, we demonstrate that cosputtering can produce amorphous Zr-Cu-Ti thin films with an excessive Ti content even as high as 19%. Sub-T{sub g} annealing of the film induces the formation of medium-range-ordered clusters and to raise the nanohardness by 35% to 6.6 GPa. The promising mechanical properties of the sub-T{sub g} annealed Zr{sub 52}Cu{sub 29}Ti{sub 19} films offer great potential for microelectromechanical system applications.

  15. Y-Ba-Cu-O films prepared by a paint-on method

    SciTech Connect (OSTI)

    Shih, I.; Qiu, C.X.

    1988-02-29

    Polycrystalline films of Y-Ba-Cu-O with a thickness of about 20--40 ..mu..m have been prepared on alumina substrates using a paint-on method. The liquid source used was obtained by mixing powder of Y/sub 2/O/sub 3/, BaCO/sub 3/, and CuO in liquid triethanolamine. Several Y-Ba-Cu-O films with an onset temperature of about 100 K and a zero resistance temperature of 85 K have been obtained after a short heat treatment at 1000 /sup 0/C in flowing O/sub 2/.

  16. Crystal structure and magnetic properties of NaCu{sup II}[(Cu{sup II}{sub 3}O)(PO{sub 4}){sub 2}Cl

    SciTech Connect (OSTI)

    Jin Tengteng; Liu Wei; Chen Shuang; Prots, Yurii; Schnelle, Walter; Zhao Jingtai; Kniep, Ruediger; Hoffmann, Stefan

    2012-08-15

    A new copper(II) oxide phosphate chloride, NaCu{sup II}[(Cu{sup II}{sub 3}O)(PO{sub 4}){sub 2}Cl], has been synthesized by flux synthesis. Single-crystal X-ray diffraction data show that the title compound crystallizes in the monoclinic system, space group P2{sub 1}/c (No. 14), with lattice parameters a=8.392(2) A, b=6.3960(10) A, c=16.670(2) A, {beta}=109.470(10) Degree-Sign , V=843.6(3) A{sup 3}, Z=4. The crystal structure is characterized by a complex chain of copper-centered polyhedra running along [0 1 0] which are connected by phosphate tetrahedra. The resulting three-dimensional polyhedra framework exhibits channels filled by additional copper and sodium atoms. Field and temperature dependent measurements of the specific heat and the magnetic susceptibility reveal low-dimensional magnetic behavior. The compound starts to decompose at 700 K under release of oxygen and evaporation of Cu{sup I}Cl as shown by simultaneous thermogravimetry and mass spectrometry. - Graphical abstract: The crystal structure of the new copper(II) phosphate chloride, NaCu{sup II}[(Cu{sup II}{sub 3}O)(PO{sub 4}){sub 2}Cl], exhibits linear chains of copper tetrahedra which show low-dimensional magnetic behavior proven by specific heat and magnetic susceptibility measurements. Highlights: Black-Right-Pointing-Pointer A new copper(II) oxide phosphate chloride, NaCu{sup II}[(Cu{sup II}{sub 3}O)(PO{sub 4}){sub 2}Cl], has been synthesized by flux synthesis. Black-Right-Pointing-Pointer The crystal structure comprises chains of Cu{sub 4}O tetrahedra. Black-Right-Pointing-Pointer Low-dimensional behavior has been proven by magnetic and specific heat measurements. Black-Right-Pointing-Pointer On heating, Cu{sup I}Cl and oxygen are released shown by simultaneous thermogravimetry and mass spectrometry.

  17. A Theoretical Study of Methanol Synthesis from CO(2) Hydrogenation on Metal-doped Cu(111) Surfaces

    SciTech Connect (OSTI)

    Liu P.; Yang, Y.; White, M.G.

    2012-01-12

    Density functional theory (DFT) calculations and Kinetic Monte Carlo (KMC) simulations were employed to investigate the methanol synthesis reaction from CO{sub 2} hydrogenation (CO{sub 2} + 3H{sub 2} {yields} CH{sub 3}OH + H{sub 2}O) on metal-doped Cu(111) surfaces. Both the formate pathway and the reverse water-gas shift (RWGS) reaction followed by a CO hydrogenation pathway (RWGS + CO-Hydro) were considered in the study. Our calculations showed that the overall methanol yield increased in the sequence: Au/Cu(111) < Cu(111) < Pd/Cu(111) < Rh/Cu(111) < Pt/Cu(111) < Ni/Cu(111). On Au/Cu(111) and Cu(111), the formate pathway dominates the methanol production. Doping Au does not help the methanol synthesis on Cu(111). Pd, Rh, Pt, and Ni are able to promote the methanol production on Cu(111), where the conversion via the RWGS + CO-Hydro pathway is much faster than that via the formate pathway. Further kinetic analysis revealed that the methanol yield on Cu(111) was controlled by three factors: the dioxomethylene hydrogenation barrier, the CO binding energy, and the CO hydrogenation barrier. Accordingly, two possible descriptors are identified which can be used to describe the catalytic activity of Cu-based catalysts toward methanol synthesis. One is the activation barrier of dioxomethylene hydrogenation, and the other is the CO binding energy. An ideal Cu-based catalyst for the methanol synthesis via CO{sub 2} hydrogenation should be able to hydrogenate dioxomethylene easily and bond CO moderately, being strong enough to favor the desired CO hydrogenation rather than CO desorption but weak enough to prevent CO poisoning. In this way, the methanol production via both the formate and the RWGS + CO-Hydro pathways can be facilitated.

  18. The UC Davis Policy Institute for Energy, Environment and the Economy is part of a bold new campus-wide initiative to dramatically increase the value of UC research to the policy-making process by identifying priority policy information needs,

    E-Print Network [OSTI]

    California at Davis, University of

    The UC Davis Policy Institute for Energy, Environment and the Economy is part of a bold new campus's energy demand. This policy forum series draws from the latest research to explore opportunities to create and implement more effective energy efficiency policies such as those found in California Title 20

  19. The UC Davis Policy Institute for Energy, Environment and the Economy is part of a bold new campus-wide initiative to dramatically increase the value of UC research to the policy-making process by identifying priority policy information needs,

    E-Print Network [OSTI]

    California at Davis, University of

    The UC Davis Policy Institute for Energy, Environment and the Economy is part of a bold new campus-wide initiative to dramatically increase the value of UC research to the policy-making process by identifying priority policy information needs, facilitating diverse collaborations, and translating science into policy

  20. Ordered structures in YBa/sub 2/Cu/sub 3/O/sub 7-y/, La/sub 2-x/Sr/sub x/CuO/sub 4-par. delta/ and related perovskites

    SciTech Connect (OSTI)

    Mitchell, T.E.; Roy, T.; Fisk, Z.; Smith, J.L.

    1988-01-01

    Electron microscopy and electron diffraction studies have been performed on the superconducting oxides YBa/sub 2/Cu/sub 3/O/sub 7-y/, GdBa/sub 2/Cu/sub 3/O/sub 7-y/ and La/sub 2-x/Sr/sub x/CuO/sub 4-par. delta/ as well as the related perovskites La/sub 2/CuO/sub 4/, Eu/sub 2/CuO/sub 4/ and Gd/sub 2/CuO/sub 4/. Extra reflections are commonly observed in all the cases. For example, in the 123 compounds, in situ heating leads to transformations from orthorhombic to tetragonal with a loss of twin structure; on cooling the oxygen vacancies re-order in the basal plane to give 1/3(100)* or 1/4(110)* diffraction spots. In tetragonal Eu/sub 2/CuO/sub 4/ and Gd/sub 2/CuO/sub 4/, the (001) diffraction patterns often have extra spots at 1/2(110)* or at 1/4(110)* positions. Extra spots are also observed in La/sub 2/CuO/sub 4/ (orthorhombic) but this is probably due to the space group being primitive rather than centered. These observations are discussed in terms of the ordering of oxygen vacancies in the Cu-O planes of the various perovskite structures. 6 figs.

  1. Comprehensive Study of the CuF2 Conversion Reaction Mechanism in a Lithium Ion Battery

    E-Print Network [OSTI]

    Hua, Xiao; Robert, Rosa; Du, Lin-Shu; Wiaderek, Kamila M.; Leskes, Michal; Chapman, Karena W.; Chupas, Peter J.; Grey, Clare P.

    2014-06-11

    Conversion materials for lithium ion batteries have recently attracted considerable attention due to their exceptional specific capacities. Some metal fluorides, such as CuF2, are promising candidates for cathode materials owing to their high...

  2. Shape memory and superelasticity in polycrystalline Cu-Al-Ni microwires

    E-Print Network [OSTI]

    Chen, Ying

    We report a strategy to significantly improve the ductility and achieve large superelastic and shape memory strains in polycrystalline Cu–Al–Ni shape memory alloys that are normally brittle. We use a liquid-phase (Taylor) ...

  3. GaN/Cu[subscript 2]O Heterojunctions for Photovoltaic Applications

    E-Print Network [OSTI]

    Hering, K.P.

    Several growth methods were employed to investigate the photovoltaic behavior of GaN/Cu[subscript 2]O heterojunctions by depositing cuprous oxide thin films on top of gallium nitride templates. The templates consist of a ...

  4. Method of synthesizing and growing copper-indium-diselenide (CuInSe/sub 2/) crystals

    DOE Patents [OSTI]

    Ciszek, T.F.

    1984-11-29

    A process for preparing CuInSe/sub 2/ crystals includes melting a sufficient quantity of B/sub 2/O/sub 2/ along with stochiometric quantities of Cu, In, and Se in a crucible in a high-pressure atmosphere of inert gas to encapsulate the CuInSe/sub 2/ melt and confine the Se to the crucible. Additional Se in the range of 1.8 to 2.2% over the stochiometric quantity is preferred to make up for small amounts of Se lost in the process. The melt can then be cooled slowly to form the crystal as direct solidification, or the crystal can be grown by inserting a seed crystal through the B/sub 2/O/sub 3/ encapsulate into contact with the CuInSe/sub 2/ melt and withdrawing the seed upwardly to grow the crystal thereon from the melt.

  5. Structural and thermal properties of nanocrystalline CuO synthesized by reactive magnetron sputtering

    SciTech Connect (OSTI)

    Verma, M.; Gupta, V. K.; Gautam, Y. K.; Dave, V.; Chandra, R.

    2014-01-28

    Recent research has shown immense application of metal oxides like CuO, MgO, CaO, Al{sub 2}O{sub 3}, etc. in different areas which includes chemical warfare agents, medical drugs, magnetic storage media and solar energy transformation. Among the metal oxides, CuO nanoparticles are of special interest because of their excellent gas sensing and catalytic properties. In this paper we report structural and thermal properties of CuO synthesized by reactive magnetron DC sputtering. The synthesized nanoparticles were characterized by X-ray diffractometer. The XRD result reveals that as DC power increased from 30W to 80W, size of the CuO nanoparticles increased. The same results have been verified through TEM analysis. Thermal properties of these particles were studied using thermogravimetry.

  6. Theoretical investigation of the magnetic structure in YBa_2Cu_3O_6

    E-Print Network [OSTI]

    Ekkehard Krüger

    2006-08-07

    As experimentally well established, YBa_2Cu_3O_6 is an antiferromagnet with the magnetic moments lying on the Cu sites. Starting from this experimental result and the assumption, that nearest-neighbor Cu atoms within a layer have exactly antiparallel magnetic moments, the orientation of the magnetic moments has been determined within a nonadiabatic extension of the Heisenberg model of magnetism, called nonadiabatic Heisenberg model. Within this group-theoretical model there exist four stable magnetic structures in YBa_2Cu_3O_6, two of them are obviously identical with the high- and low-temperature structure established experimentally. However, not all the magnetic moments which appear to be antiparallel in neutron-scattering experiments are exactly antiparallel within this group-theoretical model. Furthermore, within this model the magnetic moments are not exactly perpendicular to the orthorhombic c axis.

  7. Understanding the Deactivation Mechanisms of Cu/Zeolite SCR Catalysts in Diesel Application

    Broader source: Energy.gov [DOE]

    To understand the durability of Cu/Zeolite urea-SCR catalysts in diesel applications, the effects of engine and lab aging on catalyst reactivity and material properties were investigated.

  8. Morphological stability of Cu-Nb nanocomposites under high-energy collision cascades

    E-Print Network [OSTI]

    Zhang, Liang

    We use molecular dynamics and phase field simulations to demonstrate that Cu-Nb multilayered nanocomposites with individual layer thicknesses above 2–4?nm remain morphologically stable when subjected to 100?keV collision ...

  9. Hidden Itinerant-Spin Phase in Heavily Overdoped La2-xSrxCuO4...

    Office of Scientific and Technical Information (OSTI)

    Overdoped La2-xSrxCuO4 Superconductors Revealed by Dilute Fe Doping: A Combined Neutron Scattering and Angle-Resolved Photoemission Study Citation Details In-Document Search...

  10. Evaluation of Quasicrystal Al-Cu-Fe Alloys for Tribological Applications 

    E-Print Network [OSTI]

    Nabelsi, Nezar

    2013-07-22

    This research investigated the tribological performance of a composite material, formed from an ultra high molecular weight polyethylene (UHMWPE) matrix and quasicrystalline Al-Cu-Fe alloy powders. An evaluation was conducted for the microstructure...

  11. Effects of mechanical properties on the reliability of Cu/low-k metallization systems

    E-Print Network [OSTI]

    Wei, Frank L. (Frank Lili), 1977-

    2007-01-01

    Cu and low-dielectric-constant (k) metallization schemes are critical for improved performance of integrated circuits. However, low elastic moduli, a characteristic of the low-k materials, lead to significant reliability ...

  12. Supported Au-CuO Catalysts for Low Temperature CO Oxidation

    Broader source: Energy.gov [DOE]

    Catalytic properties of Au-CuOx/SiO2 are investigated in removing pollutants from simulated automotive exhaust to meet an increasing demand for high emissions control at low temperatures.

  13. Ab initio Investigation of Effect of Vacancy on Dissociation of Water Molecule on Cu(111) Surface

    E-Print Network [OSTI]

    Kaware, Vaibhav

    2015-01-01

    Water dissociation is a rate limiting step in many industrially important chemical reactions. In this investigation, climbing image nudged elastic band (CINEB) method, within the framework of density functional theory, is used to report the activation energies (E a ) of water dissociation on Cu(111) surface with a vacancy. Introduction of vacancy results in a reduced coordination of the dissociated products, which facilitates their availability for reactions that involve water dissociation as an intermediate step. Activation energy for dissociation of water reduces by nearly 0.2 eV on Cu(111) surface with vacancy, in comparison with that of pristine Cu(111) surface. We also find that surface modification of the Cu upper surface is one of the possible pathways to dissociate water when the vacancy is introduced. Activation energy, and the minimum energy path (MEP) leading to the transition state remain same for various product configurations. CINEB corresponding to hydrogen gas evolution is also performed which...

  14. Non-Equilibrium Superconductivity and Quasiparticle Dynamics in YBaCuO

    SciTech Connect (OSTI)

    Siders, J.L.W.; Jacobs, R.N.; Siders, C.W.; Trugman, S.A.; Taylor, A.J.

    1999-05-21

    The authors use optical pump, coherent terahertz probe spectroscopy to transiently excite nonequilibrium populations of quasiparticles in YBa{sub 2}Cu{sub 3}O{sub 7.{delta}} and monitor, with picosecond resolution, the superfluid and quasiparticle dynamics.

  15. Nanocrystal Photovoltaics: The Case of Cu2S-CdS

    E-Print Network [OSTI]

    Rivest, Jessica Louis Baker

    2011-01-01

    of Cu 2 S-CdS Thin- Film Solar Cells Thin Solid Films 2003,of CZTS- based thin film solar cells. Thin Solid Films 2009,comprised the original thin film solar cell in 1954. 33,44

  16. Sources and distribution of CuO-derived benzene carboxylic acids in soils and sediments

    E-Print Network [OSTI]

    Long, Bernard

    Sources and distribution of CuO-derived benzene carboxylic acids in soils and sediments Angela F vas- cular plant-derived OC, through the environment. The method produces a suite of benzene

  17. Nuclear Modification Factors of phi Mesons in d+Au, Cu+Cu and Au+Au Collisions at s_NN = 200 GeV

    SciTech Connect (OSTI)

    Adare, A. [University of Colorado, Boulder; Awes, Terry C [ORNL; Cianciolo, Vince [ORNL; Efremenko, Yuri [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL); Enokizono, Akitomo [Oak Ridge National Laboratory (ORNL); Read Jr, Kenneth F [ORNL; Silvermyr, David O [ORNL; Sorensen, Soren P [University of Tennessee, Knoxville (UTK); Stankus, Paul W [ORNL; PHENIX, Collaboration [The

    2011-01-01

    The PHENIX experiment at the Relativistic Heavy Ion Collider has performed systematic measurements of {phi} meson production in the K{sup +}K{sup -} decay channel at midrapidity in p+p, d+Au, Cu+Cu, and Au+Au collisions at {radical}s{sub NN} = 200 GeV. Results are presented on the {phi} invariant yield and the nuclear modification factor R{sub AA} for Au+Au and Cu+Cu, and R{sub dA} for d+Au collisions, studied as a function of transverse momentum (1 < p{sub T} < 7 GeV/c) and centrality. In central and midcentral Au+Au collisions, the R{sub AA} of {phi} exhibits a suppression relative to expectations from binary scaled p+p results. The amount of suppression is smaller than that of the {pi}{sup 0} and the {eta} in the intermediate p{sub T} range (2-5 GeV/c), whereas, at higher p{sub T}, the {phi}, {pi}{sup 0}, and {eta} show similar suppression. The baryon (proton and antiproton) excess observed in central Au+Au collisions at intermediate p{sub T} is not observed for the {phi} meson despite the similar masses of the proton and the {phi}. This suggests that the excess is linked to the number of valence quarks in the hadron rather than its mass. The difference gradually disappears with decreasing centrality, and, for peripheral collisions, the R{sub AA} values for both particle species are consistent with binary scaling. Cu+Cu collisions show the same yield and suppression as Au+Au collisions for the same number of N{sub part}. The R{sub dA} of {phi} shows no evidence for cold nuclear effects within uncertainties.

  18. Understanding NOx SCR Mechanism and Activity on Cu/Chabazite Structures throughout the Catalyst Life Cycle

    SciTech Connect (OSTI)

    Ribeiro, Fabio; Delgass, Nick; Gounder, Rajmani; Schneider, William F.; Miller, Jeff; Yezerets, Aleksey; McEwen, Jean-Sabin; Peden, Charles HF; Howden, Ken

    2014-12-09

    Oxides of nitrogen (NOx) compounds contribute to acid rain and photochemical smog and have been linked to respiratory ailments. NOx emissions regulations continue to tighten, driving the need for high performance, robust control strategies. The goal of this project is to develop a deep, molecular level understanding of the function of Cu-SSZ-13 and Cu-SAPO-34 materials that catalyze the SCR of NOx with NH3.

  19. Doping Cu{sub 2}O in Electrolyte Solution: Dopant Incorporation, Atomic Structures and Electrical Properties

    SciTech Connect (OSTI)

    Tao, Meng; Zhang, Qiming

    2013-11-24

    We have pursued a number of research activities between April 2010 and April 2011: ? A detailed study on n-type doping in Cu2O by Br; ? An analysis of natural resource limitations to terawatt-scale solar cells; ? Attempt to achieve a 1.4-eV direct band gap in Ni sulfides (NiSx); ? First-principles studies of doping in Cu2O and electronic structures of NiSx.

  20. J/psi production at high transverse momenta in p plus p and Cu plus Cu collisions at root s(NN)=200 GeV 

    E-Print Network [OSTI]

    Abelev, B. I.; Aggarwal, M. M.; Ahammed, Z.; Anderson, B. D.; Arkhipkin, D.; Averichev, G. S.; Balewski, J.; Barannikova, O.; Barnby, L. S.; Baudot, J.; Baumgart, S.; Beavis, D. R.; Bellwied, R.; Benedosso, F.; Betancourt, M. J.; Betts, R. R.; Bhasin, A.; Bhati, A. K.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Biritz, B.; Bland, L. C.; Bombara, M.; Bonner, B. E.; Botje, M.; Bouchet, J.; Braidot, E.; Brandin, A. V.; Bruna, E.; Bueltmann, S.; Burton, T. P.; Bystersky, M.; Cai, X. Z.; Caines, H.; Sanchez, M. Calderon de la Barca; Catu, O.; Cebra, D.; Cendejas, R.; Cervantes, M. C.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen, H. F.; Chen, J. H.; Chen, J. Y.; Cheng, J.; Cherney, M.; Chikanian, A.; Choi, K. E.; Christie, W.; Clarke, R. F.; Codrington, M. J. M.; Corliss, R.; Cormier, T. M.; Cosentino, M. R.; Cramer, J. G.; Crawford, H. J.; Das, D.; Dash, S.; Daugherity, M.; De Silva, L. C.; Dedovich, T. G.; DePhillips, M.; Derevschikov, A. A.; de Souza, R. Derradi; Didenko, L.; Djawotho, P.; Dogra, S. M.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Dunlop, J. C.; Mazumdar, M. R. Dutta; Edwards, W. R.; Efimov, L. G.; Elhalhuli, E.; Elnimr, M.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Eun, L.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Feng, A.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Gagliardi, Carl A.; Gaillard, L.; Gangadharan, D. R.; Ganti, M. S.; Garcia-Solis, E. J.; Geromitsos, A.; Geurts, F.; Ghazikhanian, V.; Ghosh, P.; Gorbunov, Y. N.; Gordon, A.; Grebenyuk, O.; Grosnick, D.; Grube, B.; Guertin, S. M.; Guimaraes, K. S. F. F.; Gupta, A.; Gupta, N.; Guryn, W.; Haag, B.; Hallman, T. J.; Hamed, A.; Harris, J. W.; He, W.; Heinz, M.; Heppelmann, S.; Hippolyte, B.; Hirsch, A.; Hjort, E.; Hoffman, A. M.; Hoffmann, G. W.; Hofman, D. J.; Hollis, R. S.; Huang, H. Z.; Humanic, T. J.; Huo, L.; Igo, G.; Iordanova, A.; Jacobs, P.; Jacobs, W. W.; Jakl, P.; Jena, C.; Jin, F.; Jones, C. L.; Jones, P. G.; Joseph, J.; Judd, E. G.; Kabana, S.; Kajimoto, K.; Kang, K.; Kapitan, J.; Keane, D.; Kechechyan, A.; Kettler, D.; Khodyrev, V. Yu; Kikola, D. P.; Kiryluk, J.; Kisiel, A.; Klein, S. R.; Knospe, A. G.; Kocoloski, A.; Koetke, D. D.; Kopytine, M.; Korsch, W.; Kotchenda, L.; Kouchpil, V.; Kravtsov, P.; Kravtsov, V. I.; Krueger, K.; Krus, M.; Kuhn, C.; Kumar, L.; Kurnadi, P.; Lamont, M. A. C.; Landgraf, J. M.; LaPointe, S.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, C. -H; Lee, J. H.; Leight, W.; LeVine, M. J.; Li, C.; Li, N.; Li, Y.; Lin, G.; Lindenbaum, S. J.; Lisa, M. A.; Liu, F.; Liu, J.; Liu, L.; Ljubicic, T.; Llope, W. J.; Longacre, R. S.; Love, W. A.; Lu, Y.; Ludlam, T.; Ma, G. L.; Ma, Y. G.; Mahapatra, D. P.; Majka, R.; Mall, O. I.; Mangotra, L. K.; Manweiler, R.; Margetis, S.; Markert, C.; Matis, H. S.; Matulenko, Yu A.; McDonald, D.; McShane, T. S.; Meschanin, A.; Milner, R.; Minaev, N. G.; Mioduszewski, Saskia; Mischke, A.; Mohanty, B.; Morozov, D. A.; Munhoz, M. G.; Nandi, B. K.; Nattrass, C.; Nayak, T. K.; Nelson, J. M.; Netrakanti, P. K.; Ng, M. J.; Nogach, L. V.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Okada, H.; Okorokov, V.; Olson, D.; Pachr, M.; Page, B. S.; Pal, S. K.; Pandit, Y.; Panebratsev, Y.; Pawlak, T.; Peitzmann, T.; Perevoztchikov, V.; Perkins, C.; Peryt, W.; Phatak, S. C.; Pile, P.; Planinic, M.; Pluta, J.; Plyku, D.; Poljak, N.; Poskanzer, A. M.; Potukuchi, B. V. K. S.; Prindle, D.; Pruneau, C.; Pruthi, N. K.; Pujahari, P. R.; Putschke, J.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Redwine, R.; Reed, R.; Ridiger, A.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Rose, A.; Roy, C.; Ruan, L.; Russcher, M. J.; Sahoo, R.; Sakrejda, I.; Sakuma, T.; Salur, S.; Sandweiss, J.; Sarsour, M.; Schambach, J.; Scharenberg, R. P.; Schmitz, N.; Seger, J.; Selyuzhenkov, I.; Seyboth, P.; Shabetai, A.; Shahaliev, E.; Shao, M.; Sharma, M.; Shi, S. S.; Shi, X. -H; Sichtermann, E. P.; Simon, F.; Singaraju, R. N.; Skoby, M. J.; Smirnov, N.; Snellings, R.; Sorensen, P.; Sowinski, J.; Spinka, H. M.; Srivastava, B.; Stadnik, A.; Stanislaus, T. D. S.; Staszak, D.; Strikhanov, M.; Stringfellow, B.; Suaide, A. A. P.; Suarez, M. C.; Subba, N. L.; Sumbera, M.; Sun, X. M.; Sun, Y.; Sun, Z.; Surrow, B.; Symons, T. J. M.; de Toledo, A. Szanto; Takahashi, J.; Tang, A. H.; Tang, Z.; Tarini, L. H.; Tarnowsky, T.; Thein, D.; Thomas, J. H.; Tian, J.; Timmins, A. R.; Timoshenko, S.; Tlusty, D.; Tokarev, M.; Trainor, T. A.; Tram, V. N.; Trattner, A. L.; Trentalange, S.; Tribble, Robert E.; Tsai, O. D.; Ulery, J.; Ullrich, T.; Underwood, D. G.; Van Buren, G.; Van Leeuwen, M.; Molen, A. M. Vander; Vanfossen, J. A., Jr.; Varma, R.; Vasconcelos, G. M. S.; Vasilevski, I. M.; Vasiliev, A. N.; Videbaek, F.; Vigdor, S. E.; Viyogi, Y. P.; Vokal, S.; Voloshin, S. A.

    2009-01-01

    COMMUNICATIONS PHYSICAL REVIEW C 80, 041902(R) (2009) J/? production at high transverse momenta in p + p and Cu + Cu collisions at ?sN N = 200 GeV B. I. Abelev,8 M. M. Aggarwal,30 Z. Ahammed,47 B. D. Anderson,18 D. Arkhipkin,12 G. S. Averichev,11 J. Balewski...,22 O. Barannikova,8 L. S. Barnby,2 J. Baudot,16 S. Baumgart,52 D. R. Beavis,3 R. Bellwied,50 F. Benedosso,27 M. J. Betancourt,22 R. R. Betts,8 A. Bhasin,17 A. K. Bhati,30 H. Bichsel,49 J. Bielcik,10 J. Bielcikova,10 B. Biritz,6 L. C. Bland,3 M...

  1. Hydrodechlorination of 1,2-Dichloroethane Catalyzedby Dendrimer-Derived Pt-Cu/SiO2 Catalysts

    SciTech Connect (OSTI)

    Xie, Hong; Howe, Jane Y; Schwartz, Viviane; Monnier, J. R.; Williams, Christopher T.; Ploehn, Harry J.

    2008-01-01

    Dendrimer-metal-nanocomposites (DMNs) were used as precursors to prepare SiO2 supported monometallic Pt, Cu and bimetallic Pt-Cu catalysts with Pt/Cu atomic ratios of 1:1 (Pt50Cu50) and 1:3 (Pt25Cu75). After impregnation of these DMNs onto the support, the catalysts were thermally treated and activated following an optimized protocol. Scanning transmission electron microscopy (STEM) shows that the metal nanoparticles in dendrimer-derived SiO2-supported catalysts are smaller and have a more narrow size distribution than those in conventional catalysts prepared using corresponding metal salts via the wet impregnation method. Slow deactivation was observed for hydrodechlorination of 1,2-dichloroethane over monometallic Cu catalysts, which showed an activity about one to two orders of magnitude lower than that of the Pt-containing catalysts. Hydrodechlorination of 1,2-dichloroethane over Pt and Pt50Cu50 catalysts mainly produces ethane and the selectivity towards ethane increases with temperature. For Pt25Cu75 catalyst, the selectivity towards ethane decreases in favor of ethylene. The overall activity decreases with increasing Cu loading in the catalysts. Activity based on surface Pt sites suggests the formation of bi-functional surfaces in Pt25Cu75 catalyst favoring C-Cl bond scission on Cu sites and hydrogenation of intermediate .CH2CH2. on Pt sites. Furthermore, kinetic analyses suggest different reaction mechanisms for hydrodechlorination of 1,2-dichloroethane over Pt and Cu-enriched surfaces in the Pt-Cu bimetallic catalysts.

  2. Cyclotron production of {sup 61}Cu using natural Zn and enriched {sup 64}Zn targets

    SciTech Connect (OSTI)

    Asad, A. H.; Smith, S. V.; Chan, S.; Jeffery, C. M.; Morandeau, L.; Price, R. I. [RAPID PET Labs, Medical Technology and Physics, Sir Charles Gairdner Hospital, Perth, Australia, Imaging and Applied Physics, Curtin University, Perth, Australia, and Center of Excellence in Anti-matter Matter Studies, Australian National University, Can (Australia); Brookhaven National Laboratory, Upton, NY (United States) and Center of Excellence in Anti-matter Matter Studies, Australian National University, Canberra (Australia); RAPID PET Labs, Medical Technology and Physics, Sir Charles Gairdner Hospital, Perth (Australia); RAPID PET Labs, Medical Technology and Physics, Sir Charles Gairdner Hospital, Perth (Australia); Center of Excellence in Anti-matter Matter Studies, Australian National University, Canberra, Australia, and Chemistry, University of Western Australia, Pe (Australia); RAPID PET Labs, Medical Technology and Physics, Sir Charles Gairdner Hospital, Perth (Australia); RAPID PET Labs, Medical Technology and Physics, Sir Charles Gairdner Hospital, Perth, Australia and Physics, University of Western Australia, Perth (Australia)

    2012-12-19

    Copper-61 ({sup 61}Cu) shares with {sup 64}Cu certain advantages for PET diagnostic imaging, but has a shorter half-life (3.4hr vs. 12.7hr) and a greater probability of positron production per disintegration (61% vs. 17.9%). One important application is for in vivo imaging of hypoxic tissue. In this study {sup 61}Cu was produced using the {sup 64}Zn(p,{alpha}){sup 61}Cu reaction on natural Zn or enriched {sup 64}Zn targets. The enriched {sup 64}Zn (99.82%) was electroplated onto high purity gold or silver foils or onto thin Al discs. A typical target bombardment used 30{mu}A; at 11.7, 14.5 or 17.6MeV over 30-60min. The {sup 61}Cu (radiochemical purity of >95%) was separated using a combination of cation and anion exchange columns. The {sup 64}Zn target material was recovered after each run, for re-use. In a direct comparison with enriched {sup 64}Zn-target results, {sup 61}Cu production using the cheaper {sup nat}Zn target proved to be an effective alternative.

  3. Magnetic order tuned by Cu substitution in Fe1.1–zCuzTe

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wen, Jinsheng; Xu, Zhijun; Xu, Guangyong; Lumsden, M. D.; Valdivia, P. N.; Bourret-Courchesne, E.; Gu, Genda; Lee, Dung-Hai; Tranquada, J. M.; Birgeneau, R. J.

    2012-07-02

    We study the effects of Cu substitution in Fe?.?Te, the nonsuperconducting parent compound of the iron-based superconductor, Fe??yTe??xSex, utilizing neutron scattering techniques. It is found that the structural and magnetic transitions, which occur at ~60 K without Cu, are monotonically depressed with increasing Cu content. By 10% Cu for Fe, the structural transition is hardly detectable, and the system becomes a spin glass below 22 K, with a slightly incommensurate ordering wave vector of (0.5–?, 0, 0.5) with ? being the incommensurability of 0.02, and correlation length of 12 Å along the a axis and 9 Å along the cmore »axis. With 4% Cu, both transition temperatures are at 41 K, though short-range incommensurate order at (0.42, 0, 0.5) is present at 60 K. With further cooling, the incommensurability decreases linearly with temperature down to 37 K, below which there is a first-order transition to a long-range almost-commensurate antiferromagnetic structure. A spin anisotropy gap of 4.5 meV is also observed in this compound. Our results show that the weakly magnetic Cu has a large effect on the magnetic correlations; it is suggested that this is caused by the frustration of the exchange interactions between the coupled Fe spins.« less

  4. Enhanced thermoelectric performance in Cd doped CuInTe{sub 2} compounds

    SciTech Connect (OSTI)

    Cheng, N.; Liu, R.; Bai, S.; Shi, X. Chen, L.

    2014-04-28

    CuIn{sub 1?x}Cd{sub x}Te{sub 2} materials (x?=?0, 0.02, 0.05, and 0.1) are prepared using melting-annealing method and the highly densified bulk samples are obtained through Spark Plasma Sintering. The X-ray diffraction data confirm that nearly pure chalcopyrite structures are obtained in all the samples. Due to the substitution of Cd at In sites, the carrier concentration is greatly increased, leading to much enhanced electrical conductivity and power factor. The single parabolic band model is used to describe the electrical transport properties of CuInTe{sub 2} and the low temperature Hall mobility is also modeled. By combing theoretical model and experiment data, the optimum carrier concentration in CuInTe{sub 2} is proposed to explain the greatly enhanced power factors in the Cd doped CuInTe{sub 2}. In addition, the thermal conductivity is reduced by extra phonon scattering due to the atomic mass and radius fluctuations between Cd and In atoms. The maximum zTs are observed in CuIn{sub 0.98}Cd{sub 0.02}Te{sub 2} and CuIn{sub 0.9}Cd{sub 0.1}Te{sub 2} samples, which are improved by over 100% at room temperature and around 20% at 600?K.

  5. The Different Impacts of SO2 and SO3 on Cu/Zeolite SCR Catalysts

    SciTech Connect (OSTI)

    Cheng, Yisun; Lambert, Christine; Kim, Do Heui; Kwak, Ja Hun; Cho, Sung June; Peden, Charles HF

    2010-06-19

    The different impacts of SO2 and SO3 on Cu/zeolite SCR catalysts were investigated by SCR performance tests and multiple characterization techniques including temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS) and X-ray absorption fine structure (XAFS). The results indicate that a larger amount of highly dispersed CuSO4 formed in the zeolite catalysts (Z-CuSO4) upon SO3 poisoning, explaining the much more significant deactivation of the Cu/zeolite catalysts that were exposed to SO3 compared to poisoning by SO2. This paper provides the first demonstration that active sites of Cu/zeolite SCR catalysts involved in the storage and removal of sulfur can react with SO2 and SO3 in very different ways. In particular, the significant differences in the extent of sulfur uptake account for the considerably different impacts of SO2 and SO3 poisoning on the performance of Cu/zeolite SCR catalysts.

  6. The Different Impacts of SO2 and SO3 on Cu/zeolite SCR Catalysts

    SciTech Connect (OSTI)

    Cheng, Y.; Lambert, C; Kim, D; Kwak, J; Cho, S; Peden, C

    2010-01-01

    The different impacts of SO{sub 2} and SO{sub 3} on Cu/zeolite SCR catalysts were investigated by SCR performance tests and multiple characterization techniques including temperature programmed desorption (TPD), X-ray photoelectron spectroscopy (XPS) and X-ray absorption fine structure (XAFS). The results indicate that a larger amount of highly dispersed CuSO{sub 4} formed in the zeolite catalysts (Z-CuSO{sub 4}) upon SO{sub 3} poisoning, explaining the much more significant deactivation of the Cu/zeolite catalysts that were exposed to SO{sub 3} compared to poisoning by SO{sub 2}. This paper provides the first demonstration that active sites of Cu/zeolite SCR catalysts involved in the storage and removal of sulfur can react with SO{sub 2} and SO{sub 3} in very different ways. In particular, the significant differences in the extent of sulfur uptake account for the considerably different impacts of SO{sub 2} and SO{sub 3} poisoning on the performance of Cu/zeolite SCR catalysts.

  7. Novel Approaches to Wide Bandgap CuInSe2 Based Absorbers

    SciTech Connect (OSTI)

    William N. Shafarman

    2011-04-28

    This project targeted the development of high performance wide bandgap solar cells based on thin film alloys of CuInSe2 to relax constraints on module design and enable tandem solar cell structures. This addressed goals of the Solar Energy Technologies Program for Next Generation PV to develop technology needed for higher thin film module efficiency as a means to reduce costs. Specific objectives of the research project were: 1) to develop the processes and materials required to improve the performance of wide bandgap thin film solar cells based on alloys of CuInSe2, and 2) to provide the fundamental science and engineering basis for the material, electronic, and device properties required to effectively apply these processes and materials to commercial manufacture. CuInSe2-based photovoltaics have established the highest efficiencies of the thin film materials at both the cell and module scales and are actively being scaled up to commercialization. In the highest efficiency cells and modules, the optical bandgap, a function of the CuInSe2-based alloy composition, is relatively low compared to the optimum match to the solar spectrum. Wider bandgap alloys of CuInSe2 produce higher cell voltages which can improve module performance and enable the development of tandem solar cells to boost the overall efficiency. A focus for the project was alloying with silver to form (AgCu)(InGa)Se2 pentenary thin films deposited by elemental co-evaporation which gives the broadest range of control of composition and material properties. This alloy has a lower melting temperature than Ag-free, Cu-based chalcopyrite compounds, which may enable films to be formed with lower defect densities and the (AgCu)(InGa)Se2 films give improved material properties and better device performance with increasing bandgap. A comprehensive characterization of optical, structural, and electronic properties of (AgCu)(InGa)Se2 was completed over the complete compositional range 0 ? Ga/(In+Ga) ? 1 and 0 ? Ag/(Ag+Cu) ? 1. Evidence of improved material quality includes reduced sub-bandgap optical absorption, sharper bandtails, and increased grain size with Ag addition. The Ag alloying was shown to increase the range of bandgaps over which solar cells can be fabricated without any drop-off in performance. With bandgap greater than 1.6 eV, in the range needed for tandem solar cells, (AgCu)(InGa)Se2 gave higher efficiency than other CuInSe2-based alloys. Using a simple single-stage co-evaporation process, a solar cell with 17.6% efficiency using a film with bandgap = 1.3 eV was achieved, demonstrating the viability of (AgCu)(InGa)Se2 for high efficiency devices. With a three-stage co-evaporation process for (AgCu)(InGa)Se2 deposition a device with efficiency = 13.0 % and VOC = 890 mV with JSC = 20.5 mA/cm2, FF = 71.3% was achieved. This surpasses the performance of other wide bandgap CuInSe2-based solar cells. Detailed characterization of the electronic properties of the materials and devices including the application of advanced admittance-based easements was completed.

  8. The magnetic structure of EuCu2Sb2

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Ryan, D. H.; Cadogan, J. M.; Anand, V. K.; Johnston, D. C.; Flacau, R.

    2015-05-06

    Antiferromagnetic ordering of EuCu2Sb2 which forms in the tetragonal CaBe2Ge2-type structure (space group P4/nmm #129) has been studied using neutron powder diffraction and 151Eu Mössbauer spectroscopy. The room temperature 151Eu isomer shift of –12.8(1) mm/s shows the Eu to be divalent, while the 151Eu hyperfine magnetic field (Bhf) reaches 28.7(2) T at 2.1 K, indicating a full Eu2+ magnetic moment. Bhf(T) follows a smooth $S=\\frac{7}{2}$ Brillouin function and yields an ordering temperature of 5.1(1) K. Refinement of the neutron diffraction data reveals a collinear A-type antiferromagnetic arrangement with the Eu moments perpendicular to the tetragonal c-axis. As a result, themore »refined Eu magnetic moment at 0.4 K is 7.08(15) ?B which is the full free-ion moment expected for the Eu2+ ion with $S=\\frac{7}{2}$ and a spectroscopic splitting factor of g = 2.« less

  9. Metallic glass alloys of Zr, Ti, Cu and Ni

    DOE Patents [OSTI]

    Lin, Xianghong (Pasadena, CA); Peker, Atakan (Pasadena, CA); Johnson, William L. (Pasadena, CA)

    1997-01-01

    At least quaternary alloys form metallic glass upon cooling below the glass transition temperature at a rate less than 10.sup.3 K/s. Such alloys comprise titanium from 19 to 41 atomic percent, an early transition metal (ETM) from 4 to 21 atomic percent and copper plus a late transition metal (LTM) from 49 to 64 atomic percent. The ETM comprises zirconium and/or hafnium. The LTM comprises cobalt and/or nickel. The composition is further constrained such that the product of the copper plus LTM times the atomic proportion of LTM relative to the copper is from 2 to 14. The atomic percentage of ETM is less than 10 when the atomic percentage of titanium is as high as 41, and may be as large as 21 when the atomic percentage of titanium is as low as 24. Furthermore, when the total of copper and LTM are low, the amount of LTM present must be further limited. Another group of glass forming alloys has the formula (ETM.sub.1-x Ti.sub.x).sub.a Cu.sub.b (Ni.sub.1-y Co.sub.y).sub.c wherein x is from 0.1 to 0.3, y.cndot.c is from 0 to 18, a is from 47 to 67, b is from 8 to 42, and c is from 4 to 37. This definition of the alloys has additional constraints on the range of copper content, b.

  10. Characterization of Cu-SSZ-13 NH3 SCR Catalysts: an in situ FTIR Study

    SciTech Connect (OSTI)

    Szanyi, Janos; Kwak, Ja Hun; Zhu, Haiyang; Peden, Charles HF

    2013-01-23

    The adsorption of CO and NO over Cu-SSZ-13 zeolite catalysts, highly active in the selective catalytic reduction of NOx with NH3, was investigated by FTIR spectroscopy, and the results obtained were compared to those collected from other Cu-ion exchanged zeolites (Y,FAU and ZSM-5). At low CO pressures at room temperature (295 K) CO form monocarbonyls exclusively on the Cu+ ions, while in the presence of gas phase CO dicarbonyls on Cu+ and adsorbed CO on Cu2+ centers form, as well. At low (cryogenic) sample temperatures tricarbonyl formation on Cu+ sites was also observed. The adsorption of NO produces IR bands that can be assigned to nitrosyls bound to both Cu+ and Cu2+ centers, and NO+ species located in charge compensating cationic positions of the chabasite framework. On the reduced Cu-SSZ-13 samples the formation of N2O was also detected. The assignment of the adsorbed NOx species was aided by adsorption experiments with isotopically labeled 15NO. The movement of Cu ions from the sterically hindered six member ring position to the more accessible cavity positions as a result of their interaction with adsorbates (NO and H2O) was clearly evidenced. Comparisons of the spectroscopy data obtained in the static transmission IR system to those collected in the flow-through diffuse reflectance cell points out that care must be taken when conclusions are drawn about the adsorptive and reactive properties of metal cation centers based on a set of data collected under well defined, specific experimental conditions. Financial support was provided by the US Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program. This work was performed in the Environmental Molecular Sciences Laboratory (EMSL) at the Pacific Northwest National Laboratory (PNNL). The EMSL is a national scientific user facility supported by the US DOE, Office of Biological and Environmental Research. PNNL is a multi-program national laboratory operated for the US DOE by Battelle.

  11. Modeling Cu Migration in CdTe Solar Cells Under Device-Processing and Long-Term Stability Conditions: Preprint

    SciTech Connect (OSTI)

    Teeter, G.; Asher, S.

    2008-05-01

    An impurity migration model for systems with material interfaces is applied to Cu migration in CdTe solar cells. In the model, diffusion fluxes are calculated from the Cu chemical potential gradient. Inputs to the model include Cu diffusivities, solubilities, and segregation enthalpies in CdTe, CdS and contact materials. The model yields transient and equilibrium Cu distributions in CdTe devices during device processing and under field-deployed conditions. Preliminary results for Cu migration in CdTe photovoltaic devices using available diffusivity and solubility data from the literature show that Cu segregates in the CdS, a phenomenon that is commonly observed in devices after back-contact processing and/or stress conditions.

  12. Excellent activity and selectivity of Cu-SSZ-13 in the selective catalytic reduction of NOx with NH3

    SciTech Connect (OSTI)

    Kwak, Ja Hun; Tonkyn, Russell G.; Kim, Do Heui; Szanyi, Janos; Peden, Charles HF

    2010-10-21

    Superior activity and selectivity of a Cu ion-exchanged SSZ-13 zeolite in the selective catalytic reduction (SCR) of NOx with NH3 were observed, in comparison to Cu-beta and Cu-ZSM-5 zeolites. Cu-SSZ-13 was not only more active in the NOx SCR reaction over the entire temperature range studied (up to 550 °C), but also more selective toward nitrogen formation, resulting in significantly lower amounts of NOx by-products (i.e., NO2 and N2O) than the other two zeolites. In addition, Cu-SSZ-13 demonstrated the highest activity and N2 formation selectivity in the oxidation of NH3. The results of this study strongly suggest that Cu-SSZ-13 is a promising candidate as a catalyst for NOx SCR with great potential in after-treatment systems for either mobile or stationary sources.

  13. Preparation and structure characterization of SmCo{sub 5}(0001) epitaxial thin films grown on Cu(111) underlayers

    SciTech Connect (OSTI)

    Ohtake, Mitsuru; Nukaga, Yuri; Futamoto, Masaaki; Kirino, Fumiyoshi

    2009-04-01

    SmCo{sub 5}(0001) epitaxial films were prepared on Cu(111) single-crystal underlayers formed on Al{sub 2}O{sub 3}(0001) substrates at 500 deg. C. The nucleation and growth mechanism of (0001)-oriented SmCo{sub 5} crystal on Cu(111) underlayer is investigated and a method to control the nucleation is proposed. The SmCo{sub 5} epitaxial thin film formed directly on Cu underlayer consists of two types of domains whose orientations are rotated around the film normal by 30 deg. each other. By introducing a thin Co seed layer on the Cu underlayer, a SmCo{sub 5}(0001) single-crystal thin film is successfully obtained. Nucleation of SmCo{sub 5} crystal on Cu underlayer seems controllable by varying the interaction between the Cu underlayer and the SmCo{sub 5} layer.

  14. Measurement of electrons from heavy-flavor decays from $p$+$p$, $d$+Au, and Cu+Cu collisions in the PHENIX experiment

    E-Print Network [OSTI]

    Sanghoon Lim

    2014-08-18

    Charm and bottom quarks are formed predominantly by gluon fusion in the initial hard scatterings at RHIC, making them good probes of the full medium evolution. Previous measurements at RHIC have shown large suppression and azimuthal anisotropy of open heavy-flavor hadrons in Au+Au collisions at $\\sqrt{s_{NN}}=200~{\\rm GeV}$. Explaining the simultaneously large suppression and flow of heavy quarks has been challenging. To further understand the heavy-flavor transport in the hot and dense medium, it is imperative to also measure cold nuclear matter effects which affect the initial distribution of heavy quarks as well as the system size dependence of the final state suppression. In this talk, new measurements by the PHENIX collaboration of electrons from heavy-flavor decays in $p$+$p$, $d$+Au, and Cu+Cu collisions at $\\sqrt{s_{NN}}=200~{\\rm GeV}$ are presented. In particular, a surprising enhancement of intermediate transverse momentum heavy-flavor decay leptons in $d$+Au at mid and backward rapidity are also seen in mid-central Cu+Cu collisions. This enhancement is much larger than the expectation from anti-shadowing of the parton distributions and is theoretically unexplained.

  15. DISSERTATION IMPACT OF SECONDARY BARRIERS ON CuIn1-xGaxSe2 SOLAR-CELL

    E-Print Network [OSTI]

    Sites, James R.

    , it is important that red-light J-V of CIS solar cells be distortion-free. It was shown that one approach to reduceDISSERTATION IMPACT OF SECONDARY BARRIERS ON CuIn1-xGaxSe2 SOLAR-CELL OPERATION Submitted by Alexei Impact of Secondary Barriers on CuIn1-xGaxSe2 Solar-Cell Operation Thin-film solar cells based on CuInSe2

  16. The Effect of Copper Loading on the Selective Catalytic Reduction of Nitric Oxide by Ammonia Over Cu-SSZ-13

    SciTech Connect (OSTI)

    Kwak, Ja Hun; Tran, Diana N.; Szanyi, Janos; Peden, Charles HF; Lee, Jong H.

    2012-03-01

    The effect of Cu loading on the selective catalytic reduction of NOx by NH3 was examined over 20-80% ion-exchanged Cu-SSZ-13 zeolite catalysts. High NO reduction efficiency (80-95%) was obtained over all catalyst samples between 250 and 500°C, and the gas hourly space velocity of 200,000 h-1. Both NO reduction and NH3 oxidation activities under these conditions were found to increase slightly with increasing Cu loading at low temperatures. However, NO reduction activity was suppressed with increasing Cu loadings at high temperatures (>500oC) due to excess NH3 oxidation. The optimum Cu ion exchange level appears to be ~40-60% as higher than 80% NO reduction efficiency was obtained over 50% Cu ion-exchanged SSZ-13 up to 600oC. The NO oxidation activity of Cu-SSZ-13 was found to be low regardless of Cu loading, although it was somewhat improved with increasing Cu ion exchange level at high temperatures. During the “fast” SCR (i.e., NO/NO2 =1), only a slight improvement in NOx reduction activity was obtained for Cu-SSZ-13. Regardless of Cu loading, near 100% selectivity to N2 was observed; only a very small amount of N2O was produced even in the presence of NO2. Based on the Cu loading, the apparent activation energies for NO oxidation and NO SCR were estimated to be ~58 kJ/mol and ~41 kJ/mol, respectively.

  17. PHYSICAL REVIEW B 86, 245429 (2012) Ab initio atomistic thermodynamics study of the early stages of Cu(100) oxidation

    E-Print Network [OSTI]

    McGaughey, Alan

    2012-01-01

    of Cu(100) oxidation Wissam A. Saidi,1,* Minyoung Lee,2 Liang Li,3 Guangwen Zhou,3 and Alan J. H. Mc

  18. Plastic deformation in Al (Cu) interconnects stressed by electromigration and studied by synchrotron polychromatic X-ray microdiffraction

    E-Print Network [OSTI]

    Chen, Kai; Advanced Light Source; UCLA

    2008-01-01

    Plastic deformation in Al (Cu) interconnects stressed bygrain orientation [7], study plastic deformation [12-15] andThis aspect of EM-induced plastic deformation in grains

  19. Highly-enhanced reflow characteristics of sputter deposited Cu alloy thin films for large scale integrated interconnections

    SciTech Connect (OSTI)

    Onishi, Takashi; Mizuno, Masao; Yoshikawa, Tetsuya; Munemasa, Jun; Mizuno, Masataka; Kihara, Teruo; Araki, Hideki; Shirai, Yasuharu

    2011-08-01

    An attempt to improve the reflow characteristics of sputtered Cu films was made by alloying the Cu with various elements. We selected Y, Sb, Nd, Sm, Gd, Dy, In, Sn, Mg, and P for the alloys, and ''the elasto-plastic deformation behavior at high temperature'' and ''the filling level of Cu into via holes'' were estimated for Cu films containing each of these elements. From the results, it was found that adding a small amount of Sb or Dy to the sputtered Cu was remarkably effective in improve the reflow characteristics. The microstructure and imperfections in the Cu films before and after high-temperature high-pressure annealing were investigated by secondary ion micrographs and positron annihilation spectroscopy. The results imply that the embedding or deformation mechanism is different for the Cu-Sb alloy films compared to the Cu-Dy alloy films. We consider that the former is embedded by softening or deformation of the Cu matrix, which has a polycrystalline structure, and the latter is embedded by grain boundary sliding.

  20. Effects of competing magnetic interactions on the electronic transport properties of CuCrSe{sub 2}

    SciTech Connect (OSTI)

    Tewari, Girish C.; Jawaharlal Nehru University, New Delhi 110067 ; Karppinen, Maarit; Rastogi, Ashok K.

    2013-02-15

    We have synthesized single-phase samples of the CuCrSe{sub 2} phase that exhibits hexagonal-rhombohedral layered crystal structure with space group R3m. Here we present a detailed study of electronic transport and magnetic properties of CuCrSe{sub 2}. We moreover investigate the heat capacity of CuCrSe{sub 2} in comparison to that of CuCrS{sub 2}. The electrical resistivity of CuCrSe{sub 2} shows metallic-like behavior down to 2 K, while the thermoelectric power is large around 100 {mu}V K{sup -1} at 300 K. A weak anomaly in resistivity and a rounded maximum in magnetic susceptibility are observed around 55 K. No sharp transition at 55 K is observed in the heat capacity of CuCrSe{sub 2}, rather a visible maximum is seen. At low temperatures from 2 to 14 K, the magnetic heat capacity follows T{sup 2}-dependence. We tentatively believe this behavior of CuCrSe{sub 2} to be due to competing magnetic interactions between intralayer Cr atoms. The ferromagnetic Cr-Se-Cr indirect exchange among intralayer Cr atoms is enhanced in the selenide compound (that is more metallic than the sulfide compound), and competes with the antiferromagnetic Cr-Cr direct interactions. The interlayer antiferromagnetic exchange through Cu atoms leads to magnetic ordering at low temperature at T{sub N}=55 K. - Graphical abstract: Comparison of magnetic properties of CuCrSe{sub 2} and CuCrS{sub 2} indicates a sharp cusp-like anomaly in magnetic susceptibility at the antiferromagnetic transition of CuCrS{sub 2} while the maximum of CuCrSe{sub 2} is well rounded. Magnetization is reversible after field-cooling (FC) and zero-field-cooling (ZFC) for both compounds. Highlights: Black-Right-Pointing-Pointer Layered CuCrSe{sub 2} can be synthesized in both fully and partially cation-ordered forms. Black-Right-Pointing-Pointer Contrary to previously believed insulating nature the cation-ordered phase is metallic. Black-Right-Pointing-Pointer Magnetic property of CuCrSe{sub 2} is somewhat different from that of CuCrS{sub 2}. Black-Right-Pointing-Pointer Magnetization and heat capacity data suggest complex short-range ordering for CuCrSe{sub 2}.

  1. Metallic glass alloys of Zr, Ti, Cu and Ni

    DOE Patents [OSTI]

    Lin, X.; Peker, A.; Johnson, W.L.

    1997-04-08

    At least quaternary alloys form metallic glass upon cooling below the glass transition temperature at a rate less than 10{sup 3} K/s. Such alloys comprise titanium from 19 to 41 atomic percent, an early transition metal (ETM) from 4 to 21 atomic percent and copper plus a late transition metal (LTM) from 49 to 64 atomic percent. The ETM comprises zirconium and/or hafnium. The LTM comprises cobalt and/or nickel. The composition is further constrained such that the product of the copper plus LTM times the atomic proportion of LTM relative to the copper is from 2 to 14. The atomic percentage of ETM is less than 10 when the atomic percentage of titanium is as high as 41, and may be as large as 21 when the atomic percentage of titanium is as low as 24. Furthermore, when the total of copper and LTM are low, the amount of LTM present must be further limited. Another group of glass forming alloys has the formula (ETM{sub 1{minus}x}Ti{sub x}){sub a} Cu{sub b} (Ni{sub 1{minus}y}Co{sub y}){sub c} wherein x is from 0.1 to 0.3, y{center_dot}c is from 0 to 18, a is from 47 to 67, b is from 8 to 42, and c is from 4 to 37. This definition of the alloys has additional constraints on the range of copper content, b. 2 figs.

  2. Page 1 of 2 Updated 06/28/2005 CSM Research Proposal

    E-Print Network [OSTI]

    physical, chemical, or biologic hazards. Measures necessary to protect workers and the environment during. Do you have adequate storage facilities for research materials? o The Fire Code requires that incompatible chemicals must be stored in segregated storage compartments and that flammable liquids must

  3. Large-scale application of some modern CSM methodologies by parallel computation

    E-Print Network [OSTI]

    Li, Shaofan

    ,b,*, R.A. Urasc , M.D. Adleyb , S. Lia a Mechanical Engineering and Army High Performance Computing.g. Message Passing Interface, MPI) have increased the use of High Performance Computing (HPC). Several Army Engineer Research and Development Center (ERDC) and the Army High Performance Computing Research

  4. DATA CHANGE NOTIFICATION FORM CSM/LM SPACECRAFT OPERATIONAL DATA BOOK

    E-Print Network [OSTI]

    Rathbun, Julie A.

    -10-33 (16 graphs), F-12-3 ,,.~, ·-- SNA-8-D-027(V) #12;SECTION 6.0 LUNAR SEISMIC PROFILING EXPERIMENT 6.1 LSP Deployment Criteria TABLE 6-l. LUNAR SEISMIC PROFILING DEPLOYMENT CRITERIA PARAMETER CRITERIA Geophone Module Site Selection Geophone Emplacement Geophone Vertical Alignment Geophone Cables

  5. Recommendations for CSM and Riso Ground Fault Detector Trip Jack Flicker and Jay Johnson

    E-Print Network [OSTI]

    " in the ground fault ground fault fuse.. As a result of this discovery, the Solar America Board for Codes and Standards identified a number of alternatives to ground fault fuses, but these technologies have limited on rooftop systems, the resulting fire can burn down the building and put occupants' lives at risk. Further

  6. A reactive magnetron sputtering route for attaining a controlled core-rim phase partitioning in Cu{sub 2}O/CuO thin films with resistive switching potential

    SciTech Connect (OSTI)

    Ogwu, A. A.; Darma, T. H.

    2013-05-14

    The achievement of a reproducible and controlled deposition of partitioned Cu{sub 2}O/CuO thin films by techniques compatible with ULSI processing like reactive magnetron sputtering has been reported as an outstanding challenge in the literature. This phase partitioning underlies their performance as reversible resistive memory switching devices in advanced microelectronic applications of the future. They are currently fabricated by thermal oxidation and chemical methods. We have used a combination of an understanding from plasma chemistry, thermo-kinetics of ions, and rf power variation during deposition to successfully identify a processing window for preparing partitioned Cu{sub 2}O/CuO films. The production of a core rich Cu{sub 2}O and surface rich Cu{sub 2}O/CuO mixture necessary for oxygen migration during resistive switching is confirmed by XRD peaks, Fourier transform infra red Cu (I)-O vibrational modes, XPS Cu 2P{sub 3/2} and O 1S peak fitting, and a comparison of satellite peak ratio's in Cu 2P{sub 3/2} fitted peaks. We are proposing based on the findings reported in this paper that an XPS satellite peak intensity(I{sub s}) to main peak intensity ratio (I{sub m}) {<=} 0.45 as an indicator of a core rich Cu{sub 2}O and surface rich Cu{sub 2}O/CuO formation in our prepared films. CuO is solely responsible for the satellite peaks. This is explained on the basis that plasma dissociation of oxygen will be limited to the predominant formation of Cu{sub 2}O under certain plasma deposition conditions we have identified in this paper, which also results in a core-rim phase partitioning. The deposited films also followed a Volmer-Weber columnar growth mode, which could facilitate oxygen vacancy migration and conductive filaments at the columnar interfaces. This is further confirmed by optical transmittance and band-gap measurements using spectrophotometry. This development is expected to impact on the early adoption of copper oxide based resistive memory electronic switching devices in advanced electronic devices of the future. The relative abundance of copper is another major complementary driver for the interest in copper oxide films.

  7. Exponentially decaying magnetic coupling in sputtered thin film FeNi/Cu/FeCo trilayers

    SciTech Connect (OSTI)

    Wei, Yajun Akansel, Serkan; Thersleff, Thomas; Brucas, Rimantas; Lansaker, Pia; Leifer, Klaus; Svedlindh, Peter; Harward, Ian; Celinski, Zbigniew; Ranjbar, Mojtaba; Dumas, Randy K.; Jana, Somnath; Pogoryelov, Yevgen; Karis, Olof; Åkerman, Johan

    2015-01-26

    Magnetic coupling in trilayer films of FeNi/Cu/FeCo deposited on Si/SiO{sub 2} substrates have been studied. While the thicknesses of the FeNi and FeCo layers were kept constant at 100?Å, the thickness of the Cu spacer was varied from 5 to 50?Å. Both hysteresis loop and ferromagnetic resonance results indicate that all films are ferromagnetically coupled. Micromagnetic simulations well reproduce the ferromagnetic resonance mode positions measured by experiments, enabling the extraction of the coupling constants. Films with a thin Cu spacer are found to be strongly coupled, with an effective coupling constant of 3?erg/cm{sup 2} for the sample with a 5?Å Cu spacer. The strong coupling strength is qualitatively understood within the framework of a combined effect of Ruderman-Kittel-Kasuya-Yosida and pinhole coupling, which is evidenced by transmission electron microscopy analysis. The magnetic coupling constant surprisingly decreases exponentially with increasing Cu spacer thickness, without showing an oscillatory thickness dependence. This is partially connected to the substantial interfacial roughness that washes away the oscillation. The results have implications on the design of multilayers for spintronic applications.

  8. Structure and Bonding of Tungsten Oxide Clusters on Nanostructured Cu-O Surfaces

    SciTech Connect (OSTI)

    Wagner, Margareta; Surnev, Svetlozar; Ramsey, Michael; Barcaro, Giovanni; Sementa, Luca; Negreiros, Fabio R.; Fortunelli, Alessandro; Dohnalek, Zdenek; Netzer, Falko P.

    2011-12-01

    (WO3)3 gas-phase clusters generated via vacuum sublimation are deposited under UHV and low temperature (5 K) conditions on a Cu(110) 'stripe' phase consisting of alternating Cu-O (2x1) and clean Cu regions. STM imaging shows that the clusters adsorb as intact units on both substrates, and the suggested adsorption geometries are confirmed by density-functional (DF) simulations. On the clean surface the overall distortion is minor and we are able to image the nodal structure of an individual molecular orbital in the STM at low bias, whereas on the Cu-O surface both the clusters and the substrate are significantly distorted, due to the strong oxygen affinity of W atoms. On both surfaces cluster and Cu electronic states are appreciably mixed, and electron charge is donated by the surface to the cluster. The experimentally STS-determined DOS signature of the adsorption complex consists in two peaks across the Fermi energy and is well reproduced by the DF calculations.

  9. Density functional study of CaN mono and bilayer on Cu(001)

    SciTech Connect (OSTI)

    Zahedifar, Maedeh; Hashemifar, S. Javad, E-mail: hashemifar@cc.iut.ac.ir; Akbarzadeh, Hadi [Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111 (Iran, Islamic Republic of)] [Department of Physics, Isfahan University of Technology, Isfahan, 84156-83111 (Iran, Islamic Republic of)

    2014-01-15

    Density functional - pseudopotential calculations are performed to provide first-principles insights into magnetic behaviour of bulk CaN and CaN monolayers on Cu(001) in the rock-salt (RS) and zinc-blende (ZB) structures. Our results indicate that both RS- and ZB-CaN exhibit half-metallic ferromagnetism originated from the incomplete 2p shell of the nitrogen ion. In contrast to the bulk CaN, the CaN monolayers on Cu(001) generally favor ZB structure. We argue that the more stable ZB-CaN thin films on Cu(001) are nonmagnetic, because of strong Cu-N bonding at the interface, while the less stable Ca terminated ZB-CaN thin films exhibit half-metallic ferromagnetism. The transition path between the high energy ferromagnetic and the stable nonmagnetic configurations of the ZB-CaN monolayer on Cu(001) are studied by using the nudged elastic band method. We observe a two stages transition and an activation barrier of about 1.18 eV in the minimum energy path of this transition.

  10. Enhanced irreversibility by crystal defects in the Bi-Sr-Ca-Cu-O system

    SciTech Connect (OSTI)

    Salem-Sugui, S. Jr.; Shi, Donglu; McFarland, S.E.

    1991-04-01

    We measured magnetic irreversibility, H*(T), in liquid-quenched Bi-Sr-Ca-Cu-O samples with various microstructures at high applied field (up to 7 T). We found that H*(T) is considerably increased in the Bi{sub 2}Sr{sub 2}Ca{sub 3}Cu{sub 4}O{sub x} (2234) sample with a large amount of crystal defects, including severe lattice distortion and calcium and copper rich precipitates. We argue that the lattice distortion may affect the degree of anisotropy and the Josephson coupling between the Cu-O layers, which in turn enhance the irreversibility in the Bi-Sr-Ca-Cu-O system. A critical current density, J{sub c}, of 8 {times} 10{sup 4} A/cm{sup 2} at 8 kG and 40 K was obtained in the 2234 sample with many defects, while the J{sub c} dropped significantly at the same temperature and field in the near stoichiometry Bi{sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} (2223) sample with a uniform microstructure.

  11. Impact of Sulfation and Desulfation on NOx Reduction Using Cu-Chabazite SCR Catalysts

    SciTech Connect (OSTI)

    Brookshear, Daniel W; Nam, Jeong-Gil; Nguyen, Ke; Toops, Todd J; Binder, Andrew J

    2015-01-01

    This bench reactor study investigates the impact of gaseous sulfur on the NOx reduction activity of Cu-chabazite SCR (Cu-CHA) catalysts at SO2 concentrations representative of marine diesel engine exhaust. After two hours of 500 ppm SO2 exposure at 250 and 400 C in the simulated diesel exhaust gases, the NOx reduction activity of the sulfated Cu-CHA SCR catalysts is severely degraded at evaluation temperatures below 250 C; however, above 250 C the impact of sulfur exposure is minimal. EPMA shows that sulfur is located throughout the washcoat and along the entire length of the sulfated samples. Interestingly, BET measurements reveal that the sulfated samples have a 20% decrease in surface area. Furthermore, the sulfated samples show a decrease in NOx/nitrate absorption during NO exposure in a DRIFTS reactor which suggests that Cu sites in the catalyst are blocked by the presence of sulfur. SO2 exposure also results in an increase in NH3 storage capacity, possibly due to the formation of ammonium sulfate species in the sulfated samples. In all cases, lean thermal treatments as low as 500 C reverse the effects of sulfur exposure and restore the NOx reduction activity of the Cu-CHA catalyst to that of the fresh condition.

  12. Significant enhancement of the strength-to-resistivity ratio by using nanotwins in epitaxial Cu films

    SciTech Connect (OSTI)

    Misra, Amit; Ronningh, Filip; Anderoglu, Osman; Zhang, X

    2008-01-01

    Epitaxial nanotwinned Cu films, with an average twin spacing ranging from 7 to 16 nm, exhibit a high ratio of strength-to-electrical resisitivity, -400 MPa({mu}{Omega}cm){sup -1}. The hardness of these Cu films approaches 2.8 GPa, and their electrical resistivities are comparable to that of oxygen-free high-conductivity Cu. Compared to high-angle grain boundaries, coherent twin interfaces possess inherently high resistance to the transmission of single dislocations, and yet an order of magnitude lower electron scattering coefficient, determined to be 1.5-5 x 10{sup -7} {mu}{Omega}cm{sup 2} at room temperature. Analytical studies as well as experimental results show that, in polycrystalline Cu, grain refinement leads to a maximum of the strength-to-resistivity ratio, -250 MPa({mu}{Omega}cm){sup -1}, when grain size is comparable to the mean-free path of electrons. However, in twinned Cu, such a ratio increases continuously with decreasing twin spacing down to a few nanometers. Hence nanoscale growth twins are more effective to achieve a higher strength-to-resistivity ratio than high-angle grain boundaries.

  13. Strong H...F hydrogen bonds as synthons in polymeric quantum magnets: structural, magnetic, and theoretical characterization of [Cu(HF)(pyrazine)]SbF, [CuF(HF)(FH)(pyrazine)].(SbF), and [CuAg(HF)(pyrazine)](SbF).

    SciTech Connect (OSTI)

    Manson, J. L.; Schlueter, J. A.; Funk, K. A.; Southerland, H. I.; Twamley, B.; Lancaster, T.; Blundell, S. J.; Baker, P. J.; Pratt, F. L.; Singleton, J.; McDonald, R. D.; Goddard, P. A.; Sengupta, P.; Batista, C. D.; Ding, L.; Lee, C.; Whangbo, M.-H.; Franke, I.; Cox, S.; Baines, C.; Trail, D.; Eastern Washington Univ.; Univ. of Idaho; Oxford Univ.; Rutherford Appleton Lab.; LANL; Univ. of Southern California; North Carolina State Univ.; Paul Scherrer Inst.

    2009-01-01

    Three Cu{sup 2+}-containing coordination polymers were synthesized and characterized by experimental (X-ray diffraction, magnetic susceptibility, pulsed-field magnetization, heat capacity, and muon-spin relaxation) and electronic structure studies (quantum Monte Carlo simulations and density functional theory calculations). [Cu(HF{sub 2})(pyz){sub 2}]SbF{sub 6} (pyz = pyrazine) (1a), [Cu{sub 2}F(HF)(HF{sub 2})(pyz){sub 4}](SbF{sub 6}){sub 2} (1b), and [CuAg(H{sub 3}F{sub 4})(pyz){sub 5}](SbF{sub 6}){sub 2} (2) crystallize in either tetragonal or orthorhombic space groups; their structures consist of 2D square layers of [M(pyz){sub 2}]{sup n+} that are linked in the third dimension by either HF{sub 2}{sup -} (1a and 1b) or H{sub 3}F{sub 4}{sup -} (2). The resulting 3D frameworks contain charge-balancing SbF{sub 6}{sup -} anions in every void. Compound 1b is a defective polymorph of 1a, with the difference being that 50% of the HF{sub 2}{sup -} links are broken in the former, which leads to a cooperative Jahn-Teller distortion and d{sub x{sup 2}-y{sup 2}} orbital ordering. Magnetic data for 1a and 1b reveal broad maxima in x at 12.5 and 2.6 K and long-range magnetic order below 4.3 and 1.7 K, respectively, while 2 displays negligible spin interactions owing to long and disrupted superexchange pathways. The isothermal magnetization, M(B), for 1a and 1b measured at 0.5 K reveals contrasting behaviors: 1a exhibits a concave shape as B increases to a saturation field, B{sub c}, of 37.6 T, whereas 1b presents an unusual two-step saturation in which M(B) is convex until it reaches a step near 10.8 T and then becomes concave until saturation is reached at 15.8 T. The step occurs at two-thirds of M{sub sat}, suggesting the presence of a ferrimagnetic structure. Compound 2 shows unusual hysteresis in M(B) at low temperature, although x vs T does not reveal the presence of a magnetic phase transition. Quantum Monte Carlo simulations based on an anisotropic cubic lattice were applied to the magnetic data of 1a to afford g = 2.14, J = ?13.4 K (Cu-pyz-Cu), and J = ?0.20 K (Cu?F {hor_ellipsis} H {hor_ellipsis} F?Cu), while x vs T for 1b could be well reproduced by a spin-1/2 Heisenberg uniform chain model for g = 2.127(1), J{sub 1} = ?3.81(1), and zJ{sub 2} = ?0.48(1) K, where J{sub 1} and J{sub 2} are the intra- and interchain exchange couplings, respectively, which considers the number of magnetic nearest-neighbors (z). The M(B) data for 1b could not be satisfactorily explained by the chain model, suggesting a more complex magnetic structure in the ordered state and the need for additional terms in the spin Hamiltonian. The observed variation in magnetic behaviors is driven by differences in the H {hor_ellipsis} F hydrogen-bonding motifs.

  14. Investigation of solar cells based on Cu/sub 2/O. Progress report, June 1, 1980-November 30, 1980

    SciTech Connect (OSTI)

    Olsen, L. C.

    1981-02-01

    Progress was made in three areas: microstructure of Cu/sub 2/O substrates; correlation of Cu/sub 2/O microstructure with Cu/Cu/sub 2/O cell properties; and in fabrication of Tl/Cu/sub 2/O Schottky barriers. Characterization of Cu/sub 2/O substrates with IMMA indicates that Cl is uniformly distributed through grains, Mg precipitates at grain boundaries and Na and Fe precipitates occur throughout the material. It is clear that the presence of Cl results in lower p-type resistivities. Previous photoresponse scans established that grain boundaries are not significantly active concerning minority carrier recombination. I-V analyses of Cu/Cu/sub 2/O cells indicate that leakage current components are a result of distributed effects, and not a grain boundary mechanism. It is not yet clear whether the distributed effects are strictly a surface effect, or a result of bulk defects such as Na and Fe precipitates. Tl/Cu/sub 2/O Schottky barrier studies are progressing well. This device structure is being used as a means of determining if a significant built-in voltage can be achieved with a Cu/sub 2/O cell. Problems were encountered concerning deposition of thin Tl films. The films tend to agglomerate. Substrates will be cooled to counter the apparent lateral diffusion. V/sub oc/ values greater than 0.6 volts were obtained with thick film Tl/Cu/sub 2/O cells, however. These results suggest an improved built-in potential was achieved.

  15. Microstructural evolutions in converting epitaxial Tl2Ba2CaCu2Ox thin films to epitaxial HgBa2CaCu2O6+delta thin films

    E-Print Network [OSTI]

    Wu, Judy; Siegal, M. P.; Xie, Y. Y.; Aytug, T.; Fang, L.

    2003-02-01

    Superconducting HgBa2CaCu2O6+delta (Hg-1212) thin films were obtained from Tl2Ba2CaCu2Ox (Tl-2212) precursor films using a cation-exchange process. In this process, Tl cations on the precursor lattice were thermally excited and then replaced with Hg...

  16. Stable N-CuInSe.sub.2 /iodide-iodine photoelectrochemical cell

    DOE Patents [OSTI]

    Cahen, David (Rehovot, IL); Chen, Yih W. (Lakewood, CO)

    1985-01-01

    In a photoelectrochemical solar cell, stable output and solar efficiency in excess of 10% are achieved with a photoanode of n-CuInSe.sub.2 electrode material and an iodine/iodide redox couple used in a liquid electrolyte. The photoanode is prepared by treating the electrode material by chemical etching, for example in Br.sub.2 /MeOH; heating the etched electrode material in air or oxygen; depositing a surface film coating of indium on the electrode material after the initial heating; and thereafter again heating the electrode material in air or oxygen to oxidize the indium. The electrolyte is treated by the addition of Cu.sup.+ or Cu.sup.2+ salts and In.sup.3+ salts.

  17. Stable n-CuInSe/sub 2/iodide-iodine photoelectrochemical cell

    DOE Patents [OSTI]

    Cahen, D.; Chen, Y.W.

    1984-09-20

    In a photoelectrochemical solar cell, stable output and solar efficiency in excess of 10% are achieved with a photoanode of n-CuInSe/sub 2/ electrode material and an iodine/iodide redox couple used in a liquid electrolyte. The photoanode is prepared by treating the electrode material by chemical etching, for example in Br/sub 2//MeOH; heating the etched electrode material in air or oxygen; depositing a surface film coating of indium on the electrode material after the initial heating; and thereafter again heating the electrode material in air or oxygen to oxidize the indium. The electrolyte is treated by the addition of Cu/sup +/ or Cu/sup 2 +/ salts and in In/sup 3 +/ salts.

  18. Oxidation induced amorphous stabilization of the subsurface region in Zr-Cu metallic glass

    SciTech Connect (OSTI)

    Lim, K. R. [Light Metal Division, Korea Institute of Materials Science, 797 Changwondaero, Seongsan-gu, Changwon, Gyeongnam 642-831 (Korea, Republic of); Park, J. M. [Materials Research Center, Samsung Advanced Institute of Technology (SAIT) San 14-1, Nongseo-dong, Giheung-gu, Yongin-si, Gyeonggi-do 446-712 (Korea, Republic of); Park, S. H.; Na, M. Y.; Kim, K. C.; Kim, D. H., E-mail: dohkim@yonsei.ac.kr [Department of Materials Science and Engineering, Center for Non-crystalline Materials, Yonsei University, 134 Shinchon-dong, Seodaemun-gu, Seoul 120-749 (Korea, Republic of); Kim, W. T. [Department of Optical Engineering, Cheongju University, 36 Naedock-dong, Cheongju 360-764 (Korea, Republic of)

    2014-01-20

    In the present study, we demonstrate that selective surface oxidation of Zr{sub 70}Cu{sub 30} metallic glass can stabilize the amorphous structure in the subsurface region of the matrix. The oxidation proceeds by selective oxidation of Zr, forming monoclinic ZrO{sub 2} layer on the surface, and the subsurface layer becomes Cu-enriched due to back diffusion of Cu atoms from the oxide layer. Interestingly, in this system, the composition change in the subsurface region leads to enhancement of glass stability, forming of a double layered surface structure consisted of inner amorphous layer and outer monoclinic ZrO{sub 2} layer even when the remaining matrix is completely crystallized.

  19. Interpretation of thermoelectric properties of Cu substituted LaCoO{sub 3} ceramics

    SciTech Connect (OSTI)

    Choudhary, K. K.; Kaurav, N.; Sharma, U.; Ghosh, S. K.

    2014-04-24

    The thermoelectric properties of LaCo{sub 1?x}Cu{sub x}O{sub 3??} is theoretically analyzed, it is observed that thermoelectric figure of merit ZT (=S{sup 2}?T/?) is maximized by Cu substitution in LaCoO{sub 3} Ceramics at x=0.15. The lattice thermal conductivity and thermoelectric power were estimated by the scattering of phonons with defects, grain boundaries, electrons and phonons to evaluate the thermoelectric properties. We found that Cu substitution increase the phonon scattering with grain boundaries and defects which significantly increase the thermoelectric power and decrease the thermal conductivity. The present numerical analysis will help in designing more efficient thermoelectric materials.

  20. Role of polycrystallinity in CdTe and CuInSe sub 2 photovoltaic cells

    SciTech Connect (OSTI)

    Sites, J.R. )

    1991-01-01

    The polycrystalline nature of thin-film CdTe and CuInSe{sub 2} solar cells continues to be a major factor in several individual losses that limit overall cell efficiency. This report describes progress in the quantitative separation of these losses, including both measurement and analysis procedures. It also applies these techniques to several individual cells to help document the overall progress with CdTe and CuInSe{sub 2} cells. Notably, CdTe cells from Photon Energy have reduced window photocurrent losses to 1 mA/Cm{sup 2}; those from the University of South Florida have achieved a maximum power voltage of 693 mV; and CuInSe{sub 2} cells from International Solar Electric Technology have shown a hole density as high as 7 {times} 10{sup 16} cm{sup {minus}3}, implying a significant reduction in compensation. 9 refs.

  1. Study of carbon dioxide adsorption on a Cu-nitroprusside polymorph

    SciTech Connect (OSTI)

    Roque-Malherbe, R., E-mail: RRoque@suagm.ed [Institute for Physical Chemical Applied Research, School of Science, University of Turabo, P.O. Box 3030, Gurabo, PR 00778-3030 (United States); Lozano, C.; Polanco, R.; Marquez, F.; Lugo, F. [Institute for Physical Chemical Applied Research, School of Science, University of Turabo, P.O. Box 3030, Gurabo, PR 00778-3030 (United States); Hernandez-Maldonado, A.; Primera-Pedrozo, J.N. [Department of Chemical Engineering, University of Puerto Rico-Mayagueez Campus, Mayagueez, PR 00681-9000 (United States)

    2011-05-15

    A careful structural characterization was carried out to unequivocally determine the structure of the synthesized material. The TGA, DRIFTS and a Pawley fitting of the XRD powder profiles indicate that the hydrated and in situ dehydrated polymorph crystallizes in the orthorhombic space group Pnma. Meanwhile, the CO{sub 2} isosteric heat of adsorption appears to be independent of loading with an average value of 30 kJ/mol. This translates to a physisorption type interaction, where the adsorption energy corresponding to wall and lateral interactions are mutually compensated to produce, an apparently, homogeneous adsorption energy. The somewhat high adsorption energy is probably due to the confinement of the CO{sub 2} molecules in the nitroprusside pores. Statistical Physics and the Dubinin theory for pore volume filling allowed model the CO{sub 2} equilibrium adsorption process in Cu-nitroprusside. A DRIFTS test for the adsorbed CO{sub 2} displayed a peak at about 2338 cm{sup -1} that was assigned to a contribution due to physical adsorption of the molecule. Another peak found at 2362 cm{sup -1} evidenced that this molecule interacts with the Cu{sup 2+}, which appears to act as an electron accepting Lewis acid site. The aim of the present paper is to report a Pnma stable Cu-nitroprusside polymorph obtained by the precipitation method that can adsorb carbon dioxide. -- Graphical abstract: The adsorption space of a very well characterized Cu-nitroprusside polymorph, applying carbon dioxide as probe molecule, was studied. Display Omitted Highlights: {yields} Accurate information about the geometry of the adsorption space was provided. {yields} Truthful data about the interactions within the adsorption space was presented. {yields} The structure of the tested Cu-NP polymorph was established. {yields} Was evidenced adsorbed CO{sub 2} molecules in the form of weakly bonded adducts. {yields} Is proposed that adsorbed molecules could change the Cu-NP magnetic properties.

  2. Effect of varying material anisotropy on critical current anistropy in vicinal YBa2Cu3O7-delta thin films

    E-Print Network [OSTI]

    Durrell, John H; Roessler, Roman; Delmare, Marie-Pierre; Pedarnig, Johannes; Baeuerle, Dieter; Evetts, Jan E

    2003-01-01

    on fully oxygenated and de-oxygenated YBa$_2$Cu$_3$O$_{7-\\delta}$ thin films and optimally oxygenated Y$_{0.75}$Ca$_{0.2}$Ba$_2$Cu$_3$O$_{7-\\delta}$ thin films. The films were grown on 10$^{\\circ}$ mis-cut SrTiO$_3$ substrates to enable the intrinsic vortex...

  3. Mass Transport Investigated with the Electrochemical and Electrogravimetric Impedance Techniques. 1. Water Transport in PPy/CuPTS Films

    E-Print Network [OSTI]

    Kwak, Juhyoun

    Mass Transport Investigated with the Electrochemical and Electrogravimetric Impedance Techniques. 1. Water Transport in PPy/CuPTS Films Haesik Yang and Juhyoun Kwak* Department of Chemistry, Korea AdVember 18, 1996X Water transport in poly(pyrrole/copper phthalocyaninetetrasulfonate) (PPy/CuPTS) films

  4. Growth, crystalline structure and magnetic properties of ultrathin alloy lms CoxNi1x/Cu(1 0 0)

    E-Print Network [OSTI]

    Lin, Minn-Tsong

    Growth, crystalline structure and magnetic properties of ultrathin alloy ®lms CoxNi1Àx/Cu(1 0 0) W 2001 Abstract Magnetic ultrathin alloy ®lms CoxNi1Àx/Cu(1 0 0) were prepared to characterize diraction oscillation and Auger electron spectroscopy, the composition of the alloy ®lms was controlled

  5. The Roles of Cu Impurity States in CdTe Thin Film Solar Cells Ken K. Chin1

    E-Print Network [OSTI]

    as commercially successful, second generation thin film photovoltaic (PV) products, at a production cost of $0 PV technologies, such as Cu(In,Ga)Se2 (CIGS), which has a lower theoretical limit ~26% but a higher involves Cu impurities. The CdTe thin film uses low cost 5N tellurium, which, either as a byproduct

  6. Hole transport and doping states in epitaxial CuIn1 xGaxSe2 David J. Schroeder

    E-Print Network [OSTI]

    Rockett, Angus

    . They have been shown to yield solar cells with efficiencies greater than 17%, and over time films of group III-rich CuIn1 xGaxSe2 CIGS . The films were produced using a hybrid sputtering interest in renewable energy sources such as photovoltaic devices. CuIn1 xGaxSe2 CIGS /CdS hetero- junction

  7. Journal of Crystal Growth 294 (2006) 231235 In situ investigation on selenization kinetics of CuIn precursor using

    E-Print Network [OSTI]

    Anderson, Timothy J.

    2006-01-01

    Keywords: A1. X-ray diffraction; B1. Copper indium diselenide; B3. Solar cells 1. Introduction Chalcopyrite film solar cells. The commonly used techniques for CuInSe2 layer formation are co, reaction mechanisms, and kinetics for the formation of Cu(InxGa1Àx)Se2 (CIGS) and its sub- ternaries (i

  8. Fabrication of ZnO/Cu2O heterojunctions in atmospheric conditions: improved interface quality and solar cell performance

    E-Print Network [OSTI]

    Ievskaya, Y.; Hoye, R. L. Z.; Sadhanala, A.; Musselman, K.; MacManus-Driscoll, J. L.

    2014-01-01

    ZnO/Cu2O 1.46 0.49 AALD ITO/Zn0.79Mg0.21O/Cu2O 2.2 0.65 AALD PLD – pulsed laser deposition, ALD – atomic layer deposition, ECD – electrochemi- cal deposition, IBS – ion beam sputtering, VAPE – vacuum arc plasma evaporation, dc-MSP – direct current...

  9. c2 2 Water-Hydroxyl Layer on Cu(110): AWetting Layer Stabilized by Bjerrum Defects Matthew Forster,1

    E-Print Network [OSTI]

    Alavi, Ali

    cð2 Â 2Þ Water-Hydroxyl Layer on Cu(110): AWetting Layer Stabilized by Bjerrum Defects Matthew the composition and stability of mixed water-hydroxyl layers is a key step in describing wetting and how surfaces, structures containing an excess of water over hydroxyl are stabilized on Cu (110) by forming a distorted

  10. Polarized and unpolarized neutron-scattering study of the dynamical spin susceptibility of YBa2Cu3O7

    E-Print Network [OSTI]

    Aksay, Ilhan A.

    Polarized and unpolarized neutron-scattering study of the dynamical spin susceptibility of YBa2Cu3O to previous neutron- scattering data on YBa2Cu3O7 , theoretical interpretations of NMR data and current models, , is mea- sured by neutron scattering as a function of momentum q and energy . Neutron-scattering

  11. Absence of Static Phase Separation in the High Tc Cuprate YBa2Cu3O6y J. Bobroff,1

    E-Print Network [OSTI]

    Paris-Sud 11, Université de

    Absence of Static Phase Separation in the High Tc Cuprate YBa2Cu3O6y J. Bobroff,1 H. Alloul,1 S out any large static phase separation between underdoped and optimally doped regions in contrast with the one observed by STM in Bi2212 and by NQR in LaSrCuO. This establishes that static electronic phase

  12. Normal state properties of high-angle grain Y1-xCaxBa2Cu3O7-delta

    E-Print Network [OSTI]

    Mennema, Sibe

    This dissertation describes the investigation of the normal-state properties of high-angle grain boundaries in YBa2Cu3O7-d (YBCO) and Y1-xCaxBa2Cu3O7-d (calcium-doped YBCO). YBCO is a high-temperature superconducting material with a...

  13. Device modeling and simulation of the performance of Cu(In1x,Gax)Se2 solar cells

    E-Print Network [OSTI]

    Anderson, Timothy J.

    -junction Cu(In1Àx,Gax)Se2 (CIGS) solar cells. Increasing the open-circuit voltage (Voc) to improve the overallDevice modeling and simulation of the performance of Cu(In1Àx,Gax)Se2 solar cells Jiyon Song solar cell have been carried out. A variety of graded band-gap structures, including space charge region

  14. Effect of Y-211 particle size on the growth of single grain Y–Ba–Cu–O bulk superconductors

    E-Print Network [OSTI]

    Thoma, Max; Shi, Yunhua; Dennis, Tony; Durrell, John; Cardwell, David

    2014-12-01

    , bulk HTS have consi- derable potential for use in a wide variety of applications, including magnetic bearings, flywheel energy storage systems and rotating ele- ctrical machines [2]. Practical Y–Ba–Cu–O (YBCO) bulk superconductors consist of a YBa2Cu3O...

  15. 1 Core/Shell Au/CuPt Nanoparticles and Their Dual Electrocatalysis for 2 Both Reduction and Oxidation Reactions

    E-Print Network [OSTI]

    Wang, Zhong L.

    1 Core/Shell Au/CuPt Nanoparticles and Their Dual Electrocatalysis for 2 Both Reduction usage but also improves the 15 stability of the Au/CuPt catalyst for fuel cell reactions. The results nanoparticle catalysis for many different chemical reactions. 18 INTRODUCTION 19 Coupling fuel oxidation

  16. Aging behavior and precipitates analysis of the CuCrZrCe alloy Yi Zhang a,b,d,n

    E-Print Network [OSTI]

    Volinsky, Alex A.

    Aging behavior and precipitates analysis of the Cu­Cr­Zr­Ce alloy Yi Zhang a,b,d,n , Alex A October 2015 Keywords: Cu­Cr­Zr­Ce alloy Cold rolling Aging treatment Microstructure Physical properties rolling and aging for 16 h at 300 °C. Under the same aging conditions, without cold rolling, the hardness

  17. Precipitation In Al-Mg-Si Alloys with Cu Additions and the Role of the Q' and Related Phases

    E-Print Network [OSTI]

    Laughlin, David E.

    Precipitation In Al-Mg-Si Alloys with Cu Additions and the Role of the Q' and Related Phases D Keywords: Al-Mg-Si, Al-Mg-Si-Cu, Balanced alloy, Excess-Si, Precipitation, Q, Metastable phase, Q the sequence of precipitation stages, GP"', during artificial aging. Recent results indicate

  18. Critical currents in vicinal YBa2Cu3O7-delta films

    E-Print Network [OSTI]

    Durrell, John H

    2004-01-01

    of these materials. For the case of YBCO the Ginzburg-Landau anisotropy param- eter, ?, is 5-7, whereas in Bi2Sr2CaCu2O8+x (BSCCO 2212) the value is? 200. This large difference has been attributed to the cuprate chains found along the b-axis between the cuprate... -oxygenated YBCO films31. III. EXPERIMENTAL TECHNIQUE Thin films of YBa2Cu3O7?? were prepared by pulsed laser deposition. The films all had thicknesses of between 100 and 200 nm and were grown on single crystal SrTiO3 substrates mis-cut by an angle, ?v , towards...

  19. Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor

    DOE Patents [OSTI]

    Dorris, S.E.; Poeppel, R.B.; Prorok, B.C.; Lanagan, M.T.; Maroni, V.A.

    1994-10-11

    An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor are disclosed. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor. 5 figs.

  20. Synthesis of highly phase pure (Bi, Pb)-Sr-Ca-Cu-O superconductor

    DOE Patents [OSTI]

    Dorris, Stephen E. (La Grange Park, IL); Poeppel, Roger B. (Glen Ellyn, IL); Prorok, Barton C. (Harrisville, PA); Lanagan, Michael T. (Woodridge, IL); Maroni, Victor A. (Naperville, IL)

    1994-01-01

    An article and method of manufacture of (Bi,Pb)-Sr-Ca-Cu-O superconductor. The superconductor is manufactured by preparing a first powdered mixture of bismuth oxide, lead oxide, strontium carbonate, calcium carbonate and copper oxide. A second powdered mixture is then prepared of strontium carbonate, calcium carbonate and copper oxide. The mixtures are calcined separately with the two mixtures then combined. The resulting combined mixture is then subjected to a powder in tube deformation and thermal processing to produce a substantially phase pure (Bi,Pb)-Sr-Ca-Cu-O superconductor.

  1. (He-3, D) Reaction to Bound and Quasibound Levels in Cu-59 

    E-Print Network [OSTI]

    Bindal, P. K.; Youngblood, David H.; Kozub, R. L.

    1976-01-01

    April 1976) The "Ni('He, d}' Cu reaction has been studied at bombarding energies of 35 and 39 MeV. Excitation energies and angular distributions were measured for levels up to 9.2 MeV in excitation. Distorted-wave-Born- approximation calculations were... performed using resonance form factors for the proton-unstable levels (E?&?3.4 MeV) in order to make t assignments and to extract the spectroscopic factors. Twelve levels in ' Cu are identified as possible analogs of states in Ni. A particle...

  2. Semiconductor bridge, SCB, ignition studies of Al/CuO thermite

    SciTech Connect (OSTI)

    Bickes, R.W. Jr.; Wackerbarth, D.E.; Mohler, J.H.

    1997-04-01

    The authors briefly summarize semiconductor bridge operation and review their ignition studies of Al/CuO thermite as a function of the capacitor discharge unit (CDU) firing set capacitance, charge holder material and morphology of the CuO. Ignition thresholds were obtained using a brass charge holder and a non-conducting fiber-glass-epoxy composite material, G10. At - 18 C and a charge voltage of 50V, the capacitance thresholds were 30.1 {mu}F and 2.0 {mu}F respectively. They also present new data on electrostatic discharge (ESD) and radio frequency (RF) vulnerability tests.

  3. Mechanism of Methanol Synthesis on Cu through CO2 and CO Hydrogenation

    SciTech Connect (OSTI)

    Grabow, Lars C.; Mavrikakis, Manos

    2011-03-04

    We present a comprehensive mean-field microkinetic model for the methanol synthesis and water-gas-shift (WGS) reactions that includes novel reaction intermediates, such as formic acid (HCOOH) and hydroxymethoxy (CH?O?) and allows for the formation of formic acid (HCOOH), formaldehyde (CH?O), and methyl formate (HCOOCH?) as byproducts. All input model parameters were initially derived from periodic, self-consistent, GGA-PW91 density functional theory calculations on the Cu(111) surface and subsequently fitted to published experimentalmethanol synthesis rate data, which were collected under realistic conditions on a commercial Cu/ZnO/Al?O? catalyst. We find that the WGS reaction follows the carboxyl (COOH)-mediated path and that both CO and CO? hydrogenation pathways are active for methanol synthesis. Under typical industrial methanol synthesis conditions, CO? hydrogenation is responsible for ?2/3 of the methanol produced. The intermediates of the CO? pathway for methanol synthesis include HCOO*, HCOOH*, CH?O?*, CH?O*, and CH?O*. The formation of formate (HCOO*) from CO?* and H* on Cu(111) does not involve an intermediate carbonate (CO?*) species, and hydrogenation of HCOO* leads to HCOOH* instead of dioxymethylene (H?CO?*). The effect of CO is not only promotional; CO* is also hydrogenated in significant amounts to HCO*, CH?O *, CH?O*, and CH?OH*. We considered two possibilities for CO promotion: (a) removal of OH* via COOH* to form CO? and hydrogen (WGS), and (b) CO-assisted hydrogenation of various surface intermediates, with HCO* being the H-donor. Only the former mechanism contributes to methanol formation, but its effect is small compared with that of direct CO hydrogenation to methanol. Overall, methanol synthesis rates are limited by methoxy (CH?O*) formation at low CO?/(CO+CO?) ratios and by CH?O* hydrogenation in CO?-rich feeds. CH?O* hydrogenation is the common slow step for both the CO and the CO? methanol synthesis routes; the relative contribution of each route is determined by their respective slow steps HCO*+H*?CH?O*+* and HCOOH*+H*?CH?O?*+* as well as by feed composition and reaction conditions. An analysis of the fitted parameters for a commercial Cu/ZnO/Al?O? catalyst suggests that a more open Cu surface, for example, Cu(110), Cu(100), and Cu(211) partially covered by oxygen, may provide a better model for the active site of methanol synthesis, but our studies cannot exclude a synergistic effect with the ZnO support.

  4. Electronic band structure imaging of three layer twisted graphene on single crystal Cu(111)

    SciTech Connect (OSTI)

    Marquez Velasco, J.; Department of Physics, National Technical University of Athens, Athens ; Kelaidis, N.; Xenogiannopoulou, E.; Tsoutsou, D.; Tsipas, P.; Speliotis, Th.; Pilatos, G.; Likodimos, V.; Falaras, P.; Dimoulas, A.; Raptis, Y. S.

    2013-11-18

    Few layer graphene (FLG) is grown on single crystal Cu(111) by Chemical Vapor Deposition, and the electronic valence band structure is imaged by Angle-Resolved Photo-Emission Spectroscopy. It is found that graphene essentially grows polycrystalline. Three nearly ideal Dirac cones are observed along the Cu ?{sup ¯}K{sup ¯} direction in k-space, attributed to the presence of ?4° twisted three layer graphene with negligible interlayer coupling. The number of layers and the stacking order are compatible with Raman data analysis demonstrating the complementarity of the two techniques for a more accurate characterization of FLG.

  5. Molecular dynamics simulations of organic SIMS with Cu{sub n} (n=1-3) clusters

    SciTech Connect (OSTI)

    Townes, J. A.; White, A. K.; Krantzman, K. D.; Garrison, B. J.

    1999-06-10

    Molecular dynamics simulations have been performed to study the effect of cluster size on the emission yield and damage cross section in organic SIMS. A model system composed of a monolayer of biphenyl molecules on a Cu(001) substrate was bombarded with Cu{sub n} (n=1-3) projectiles at kinetic energies of 0.100 keV per atom. The yield increases with cluster size, but a nonlinear enhancement in yield is not observed. The yield-to-damage ratio, on the other hand, increases with the use of clusters, indicating that clusters have the potential to improve the sensitivity of SIMS.

  6. Pion interferometry in Au plus Au and Cu plus Cu collisions at s(NN)=62.4 and 200 GeV 

    E-Print Network [OSTI]

    Abelev, B. I.; Aggarwal, M. M.; Ahammed, Z.; Anderson, B. D.; Arkhipkin, D.; Averichev, G. S.; Balewski, J.; Barannikova, O.; Barnby, L. S.; Baudot, J.; Baumgart, S.; Beavis, D. R.; Bellwied, R.; Benedosso, F.; Betancourt, M. J.; Betts, R. R.; Bhasin, A.; Bhati, A. K.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Biritz, B.; Bland, L. C.; Bombara, M.; Bonner, B. E.; Botje, M.; Bouchet, J.; Braidot, E.; Brandin, A. V.; Bruna, E.; Bueltmann, S.; Burton, T. P.; Bystersky, M.; Cai, X. Z.; Caines, H.; Sanchez, M. Calderon de la Barca; Catu, O.; Cebra, D.; Cendejas, R.; Cervantes, M. C.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen, H. F.; Chen, J. H.; Chen, J. Y.; Cheng, J.; Cherney, M.; Chikanian, A.; Choi, K. E.; Christie, W.; Clarke, R. F.; Codrington, M. J. M.; Corliss, R.; Cormier, T. M.; Cosentino, M. R.; Cramer, J. G.; Crawford, H. J.; Das, D.; Dash, S.; Daugherity, M.; De Silva, L. C.; Dedovich, T. G.; DePhillips, M.; Derevschikov, A. A.; de Souza, R. Derradi; Didenko, L.; Djawotho, P.; Dogra, S. M.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Du, F.; Dunlop, J. C.; Mazumdar, M. R. Dutta; Edwards, W. R.; Efimov, L. G.; Elhalhuli, E.; Elnimr, M.; Emelianov, V.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Eun, L.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Feng, A.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Gagliardi, Carl A.; Gaillard, L.; Ganti, M. S.; Gangadharan, D. R.; Garcia-Solis, E. J.; Geromitsos, A.; Geurts, F.; Ghazikhanian, V.; Ghosh, P.; Gorbunov, Y. N.; Gordon, A.; Grebenyuk, O.; Grosnick, D.; Grube, B.; Guertin, S. M.; Guimaraes, K. S. F. F.; Gupta, A.; Gupta, N.; Guryn, W.; Haag, B.; Hallman, T. J.; Hamed, A.; Harris, J. W.; He, W.; Heinz, M.; Heppelmann, S.; Hippolyte, B.; Hirsch, A.; Hjort, E.; Hoffman, A. M.; Hoffmann, G. W.; Hofman, D. J.; Hollis, R. S.; Huang, H. Z.; Humanic, T. J.; Igo, G.; Iordanova, A.; Jacobs, P.; Jacobs, W. W.; Jakl, P.; Jena, C.; Jin, F.; Jones, C. L.; Jones, P. G.; Joseph, J.; Judd, E. G.; Kabana, S.; Kajimoto, K.; Kang, K.; Kapitan, J.; Keane, D.; Kechechyan, A.; Kettler, D.; Khodyrev, V. Yu; Kikola, D. P.; Kiryluk, J.; Kisiel, A.; Klein, S. R.; Knospe, A. G.; Kocoloski, A.; Koetke, D. D.; Kopytine, M.; Korsch, W.; Kotchenda, L.; Kouchpil, V.; Kravtsov, P.; Kravtsov, V. I.; Krueger, K.; Krus, M.; Kuhn, C.; Kumar, L.; Kurnadi, P.; Lamont, M. A. C.; Landgraf, J. M.; LaPointe, S.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, C. -H; Lee, J. H.; Leight, W.; LeVine, M. J.; Li, N.; Li, C.; Li, Y.; Lin, G.; Lindenbaum, S. J.; Lisa, M. A.; Liu, F.; Liu, J.; Liu, L.; Ljubicic, T.; Llope, W. J.; Longacre, R. S.; Love, W. A.; Lu, Y.; Ludlam, T.; Ma, G. L.; Ma, Y. G.; Mahapatra, D. P.; Majka, R.; Mall, O. I.; Mangotra, L. K.; Manweiler, R.; Margetis, S.; Markert, C.; Matis, H. S.; Matulenko, Yu A.; McShane, T. S.; Meschanin, A.; Milner, R.; Minaev, N. G.; Mioduszewski, Saskia; Mischke, A.; Mitchell, J.; Mohanty, B.; Morozov, D. A.; Munhoz, M. G.; Nandi, B. K.; Nattrass, C.; Nayak, T. K.; Nelson, J. M.; Netrakanti, P. K.; Ng, M. J.; Nogach, L. V.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Okada, H.; Okorokov, V.; Olson, D.; Pachr, M.; Page, B. S.; Pal, S. K.; Pandit, Y.; Panebratsev, Y.; Panitkin, S. Y.; Pawlak, T.; Peitzmann, T.; Perevoztchikov, V.; Perkins, C.; Peryt, W.; Phatak, S. C.; Planinic, M.; Pluta, J.; Poljak, N.; Poskanzer, A. M.; Potukuchi, B. V. K. S.; Prindle, D.; Pruneau, C.; Pruthi, N. K.; Putschke, J.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Redwine, R.; Reed, R.; Ridiger, A.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Rose, A.; Roy, C.; Ruan, L.; Russcher, M. J.; Sahoo, R.; Sakrejda, I.; Sakuma, T.; Salur, S.; Sandweiss, J.; Sarsour, M.; Schambach, J.; Scharenberg, R. P.; Schmitz, N.; Seger, J.; Selyuzhenkov, I.; Seyboth, P.; Shabetai, A.; Shahaliev, E.; Shao, M.; Sharma, M.; Shi, S. S.; Shi, X. -H; Sichtermann, E. P.; Simon, F.; Singaraju, R. N.; Skoby, M. J.; Smirnov, N.; Snellings, R.; Sorensen, P.; Sowinski, J.; Spinka, H. M.; Srivastava, B.; Stadnik, A.; Stanislaus, T. D. S.; Staszak, D.; Strikhanov, M.; Stringfellow, B.; Suaide, A. A. P.; Suarez, M. C.; Subba, N. L.; Sumbera, M.; Sun, X. M.; Sun, Y.; Sun, Z.; Surrow, B.; Symons, T. J. M.; de Toledo, A. Szanto; Takahashi, J.; Tang, A. H.; Tang, Z.; Tarnowsky, T.; Thein, D.; Thomas, J. H.; Tian, J.; Timmins, A. R.; Timoshenko, S.; Tlusty, D.; Tokarev, M.; Trainor, T. A.; Tram, V. N.; Trattner, A. L.; Trentalange, S.; Tribble, Robert E.; Tsai, O. D.; Ulery, J.; Ullrich, T.; Underwood, D. G.; Van Buren, G.; van Leeuwen, M.; Vander Molen, A. M.; Vanfossen, J. A., Jr.; Varma, R.; Vasconcelos, G. M. S.; Vasilevski, I. M.; Vasiliev, A. N.; Videbaek, F.; Vigdor, S. E.; Viyogi, Y. P.; Vokal, S.; Voloshin, S. A.; Wada, M.; Waggoner, W. T.; Walker, M.

    2009-01-01

    REVIEW C 80, 024905 (2009) Pion interferometry in Au+ Au and Cu+ Cu collisions at ?sN N = 62.4 and 200 GeV B. I. Abelev,8 M. M. Aggarwal,30 Z. Ahammed,47 B. D. Anderson,18 D. Arkhipkin,12 G. S. Averichev,11 J. Balewski,22 O. Barannikova,8 L. S. Barnby...,2 J. Baudot,16 S. Baumgart,52 D. R. Beavis,3 R. Bellwied,50 F. Benedosso,27 M. J. Betancourt,22 R. R. Betts,8 A. Bhasin,17 A. K. Bhati,30 H. Bichsel,49 J. Bielcik,10 J. Bielcikova,10 B. Biritz,6 L. C. Bland,3 M. Bombara,2 B. E. Bonner,36 M. Botje...

  7. Spectra of identified high-p(T) pi(+/-) and p((p)over-bar ) in Cu + Cu collisions at root s(NN)=200 GeV 

    E-Print Network [OSTI]

    Abelev, B. I.; Aggarwal, M. M.; Ahammed, Z.; Alakhverdyants, A. V.; Anderson, B. D.; Arkhipkin, D.; Averichev, G. S.; Balewski, J.; Barnby, L. S.; Baumgart, S.; Beavis, D. R.; Bellwied, R.; Benedosso, F.; Betancourt, M. J.; Betts, R. R.; Bhasin, A.; Bhati, A. K.; Bichsel, H.; Bielcik, J.; Bielcikova, J.; Biritz, B.; Bland, L. C.; Bonner, B. E.; Bouchet, J.; Braidot, E.; Brandin, A. V.; Bridgeman, A.; Bruna, E.; Bueltmann, S.; Bunzarov, I.; Burton, T. P.; Cai, X. Z.; Caines, H.; Sanchez, M. Calderon de la Barca; Catu, O.; Cebra, D.; Cendejas, R.; Cervantes, M. C.; Chajecki, Z.; Chaloupka, P.; Chattopadhyay, S.; Chen, H. F.; Chen, J. H.; Chen, J. Y.; Cheng, J.; Cherney, M.; Chikanian, A.; Choi, K. E.; Christie, W.; Chung, P.; Clarke, R. F.; Codrington, M. J. M.; Corliss, R.; Cramer, J. G.; Crawford, H. J.; Das, D.; Dash, S.; Leyva, A. Davila; De Silva, L. C.; Debbe, R. R.; Dedovich, T. G.; DePhillips, M.; Derevschikov, A. A.; de Souza, R. Derradi; Didenko, L.; Djawotho, P.; Dogra, S. M.; Dong, X.; Drachenberg, J. L.; Draper, J. E.; Dunlop, J. C.; Mazumdar, M. R. Dutta; Efimov, L. G.; Elhalhuli, E.; Elnimr, M.; Engelage, J.; Eppley, G.; Erazmus, B.; Estienne, M.; Eun, L.; Evdokimov, O.; Fachini, P.; Fatemi, R.; Fedorisin, J.; Fersch, R. G.; Filip, P.; Finch, E.; Fine, V.; Fisyak, Y.; Gagliardi, Carl A.; Gangadharan, D. R.; Ganti, M. S.; Garcia-Solis, E. J.; Geromitsos, A.; Geurts, F.; Ghazikhanian, V.; Ghosh, P.; Gorbunov, Y. N.; Gordon, A.; Grebenyuk, O.; Grosnick, D.; Grube, B.; Guertin, S. M.; Gupta, A.; Gupta, N.; Guryn, W.; Haag, B.; Hallman, T. J.; Hamed, A.; Han, L. -X; Harris, J. W.; Hays-Wehle, J. P.; Heinz, M.; Heppelmann, S.; Hirsch, A.; Hjort, E.; Hoffman, A. M.; Hoffmann, G. W.; Hofman, D. J.; Hollis, R. S.; Huang, H. Z.; Humanic, T. J.; Huo, L.; Igo, G.; Iordanova, A.; Jacobs, P.; Jacobs, W. W.; Jakl, P.; Jena, C.; Jin, F.; Jones, C. L.; Jones, P. G.; Joseph, J.; Judd, E. G.; Kabana, S.; Kajimoto, K.; Kang, K.; Kapitan, J.; Kauder, K.; Keane, D.; Kechechyan, A.; Kettler, D.; Kikola, D. P.; Kiryluk, J.; Kisiel, A.; Klein, S. R.; Knospe, A. G.; Kocoloski, A.; Koetke, D. D.; Kollegger, T.; Konzer, J.; Kopytine, M.; Koralt, I.; Korsch, W.; Kotchenda, L.; Kouchpil, V.; Kravtsov, P.; Krueger, K.; Krus, M.; Kumar, L.; Kurnadi, P.; Lamont, M. A. C.; Landgraf, J. M.; LaPointe, S.; Lauret, J.; Lebedev, A.; Lednicky, R.; Lee, C. -H; Lee, J. H.; Leight, W.; LeVine, M. J.; Li, C.; Li, L.; Li, N.; Li, W.; Li, X.; Li, X.; Li, Y.; Li, Z.; Lin, G.; Lindenbaum, S. J.; Lisa, M. A.; Liu, F.; Liu, H.; Liu, J.; Ljubicic, T.; Llope, W. J.; Longacre, R. S.; Love, W. A.; Lu, Y.; Ma, G. L.; Ma, Y. G.; Mahapatra, D. P.; Majka, R.; Mall, O. I.; Mangotra, L. K.; Manweiler, R.; Margetis, S.; Markert, C.; Masui, H.; Matis, H. S.; Matulenko, Yu A.; McDonald, D.; McShane, T. S.; Meschanin, A.; Milner, R.; Minaev, N. G.; Mioduszewski, Saskia; Mischke, A.; Mitrovski, M. K.; Mohanty, B.; Mondal, M. M.; Morozov, D. A.; Munhoz, M. G.; Nandi, B. K.; Nattrass, C.; Nayak, T. K.; Nelson, J. M.; Netrakanti, P. K.; Ng, M. J.; Nogach, L. V.; Nurushev, S. B.; Odyniec, G.; Ogawa, A.; Okada, H.; Okorokov, V.; Olson, D.; Pachr, M.; Page, B. S.; Pal, S. K.; Pandit, Y.; Panebratsev, Y.; Pawlak, T.; Peitzmann, T.; Perevoztchikov, V.; Perkins, C.; Peryt, W.; Phatak, S. C.; Pile, P.; Planinic, M.; Ploskon, M. A.; Pluta, J.; Plyku, D.; Poljak, N.; Poskanzer, A. M.; Potukuchi, B. V. K. S.; Powell, C. B.; Prindle, D.; Pruneau, C.; Pruthi, N. K.; Pujahari, P. R.; Putschke, J.; Raniwala, R.; Raniwala, S.; Ray, R. L.; Redwine, R.; Reed, R.; Rehberg, J. M.; Ritter, H. G.; Roberts, J. B.; Rogachevskiy, O. V.; Romero, J. L.; Rose, A.; Roy, C.; Ruan, L.; Russcher, M. J.; Sahoo, R.; Sakai, S.; Sakrejda, I.; Sakuma, T.; Salur, S.; Sandweiss, J.; Sangaline, E.; Schambach, J.; Scharenberg, R. P.; Schmitz, N.; Schuster, T. R.; Seele, J.; Seger, J.; Selyuzhenkov, I.; Seyboth, P.; Shahaliev, E.; Shao, M.; Sharma, M.; Shi, S. S.; Sichtermann, E. P.; Simon, F.; Singaraju, R. N.; Skoby, M. J.; Smirnov, N.; Sorensen, P.; Sowinski, J.; Spinka, H. M.; Srivastava, B.; Stanislaus, T. D. S.; Staszak, D.; Stevens, J. R.; Stock, R.; Strikhanov, M.; Stringfellow, B.; Suaide, A. A. P.; Suarez, M. C.; Subba, N. L.; Sumbera, M.; Sun, X. M.; Sun, Y.; Sun, Z.; Surrow, B.; Symons, T. J. M.; de Toledo, A. Szanto; Takahashi, J.; Tang, A. H.; Tang, Z.; Tarini, L. H.; Tarnowsky, T.; Thein, D.; Thomas, J. H.; Tian, J.; Timmins, A. R.; Timoshenko, S.; Tlusty, D.; Tokarev, M.; Trainor, T. A.; Tram, V. N.; Trentalange, S.; Tribble, Robert E.; Tsai, O. D.; Ulery, J.; Ullrich, T.; Underwood, D. G.; Van Buren, G.; van Nieuwenhuizen, G.; Vanfossen, J. A., Jr.; Varma, R.; Vasconcelos, G. M. S.; Vasiliev, A. N.; Videbaek, F.; Viyogi, Y. P.; Vokal, S.; Voloshin, S. A.; Wada, M.

    2010-01-01

    REVIEW C 81, 054907 (2010) Spectra of identified high- pT pi? and p( p?) in Cu+Cu collisions at?sN N = 200 GeV B. I. Abelev,8 M. M. Aggarwal,30 Z. Ahammed,47 A. V. Alakhverdyants,17 B. D. Anderson,18 D. Arkhipkin,3 G. S. Averichev,17 J. Balewski,22 L.... S. Barnby,2 S. Baumgart,52 D. R. Beavis,3 R. Bellwied,50 F. Benedosso,27 M. J. Betancourt,22 R. R. Betts,8 A. Bhasin,16 A. K. Bhati,30 H. Bichsel,49 J. Bielcik,10 J. Bielcikova,11 B. Biritz,6 L. C. Bland,3 B. E. Bonner,36 J. Bouchet,18 E. Braidot...

  8. Fabrication and characterization of Cu(In,Ga)Se{sub 2} p-channel thin film transistors

    SciTech Connect (OSTI)

    Zhu, Xiaobo [Graduate Institute of Electronics Engineering and Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan (China); Liu, C. W., E-mail: chee@cc.ee.ntu.edu.tw [Graduate Institute of Electronics Engineering, Graduate Institute of Photonics and Optoelectronics, Department of Electrical Engineering, and Center for Condensed Matter Sciences, National Taiwan University, Taipei, Taiwan and National Nano Device Labs, Hsinchu, Taiwan (China)

    2014-10-06

    Cu(In,Ga)Se{sub 2} thin film transistors are demonstrated with the on-off ratio of ?10{sup 3} and the saturation hole mobility of 1.8?cm{sup 2}/V-s. Due to the high hole concentration (?5?×?10{sup 17?}cm{sup ?3}), the channel needs to be etched to turn off for the accumulation mode operation. The Cu(In,Ga)Se{sub 2} film after etching reveals a larger mobility, and a narrower (112) X-ray diffraction line than the original thick layer, indicating the better crystallinity of the initial growth as compared to the subsequent Cu(In,Ga)Se{sub 2} layer. Both the hole concentration and the saturation mobility increase with the decreasing Cu/(In?+?Ga) ratio probably due to the effect of Cu vacancies.

  9. ZnO/Cu(InGa)Se.sub.2 solar cells prepared by vapor phase Zn doping

    DOE Patents [OSTI]

    Ramanathan, Kannan; Hasoon, Falah S.; Asher, Sarah E.; Dolan, James; Keane, James C.

    2007-02-20

    A process for making a thin film ZnO/Cu(InGa)Se.sub.2 solar cell without depositing a buffer layer and by Zn doping from a vapor phase, comprising: depositing Cu(InGa)Se.sub.2 layer on a metal back contact deposited on a glass substrate; heating the Cu(InGa)Se.sub.2 layer on the metal back contact on the glass substrate to a temperature range between about 100.degree. C. to about 250.degree. C.; subjecting the heated layer of Cu(InGa)Se.sub.2 to an evaporant species from a Zn compound; and sputter depositing ZnO on the Zn compound evaporant species treated layer of Cu(InGa)Se.sub.2.

  10. Composition dependence of the in-plane Cu-O bond-stretching LO phonon mode in YBa2Cu3O6+x

    SciTech Connect (OSTI)

    Stercil, F.; Egami, T.; Mook Jr, Herbert A; Yethiraj, Mohana; Chung, J.-H.; Arai, M.; Frost, C.; Dogan, F.

    2008-01-01

    An inelastic pulsed neutron scattering study was performed on the dependence of the dispersion and spectral intensity of the in-plane Cu-O bond-stretching LO phonon mode on doped charge density. The measurements were made in the time-of-flight mode with the multiangle position sensitive spectrometer of the ISIS facility on single crystals of YBa{sub 2}Cu{sub 3}O{sub 6+x} (x=0.15, 0.35, 0.6, 0.7, and 0.95). The focus of the study is the in-plane Cu-O bond-stretching LO phonon mode, which is known for strong electron-phonon coupling and unusual dependence on composition and temperature. It is shown that the dispersions for the samples with x=0.35, 0.6, and 0.7 are similar to the superposition of those for x=0.15 and 0.95 samples, and cannot be explained in terms of the structural anisotropy. It is suggested that the results are consistent with the model of nanoscale electronic phase separation, with the fraction of the phases being dependent on the doped charge density.

  11. Photocatalytic performances and activities of Ag-doped CuFe{sub 2}O{sub 4} nanoparticles

    SciTech Connect (OSTI)

    Zhu, Zhengru; Li, Xinyong; Zhao, Qidong; Li, Yonghua; Sun, Caizhi; Cao, Yongqiang

    2013-08-01

    Graphical abstract: - Highlights: • CuFe{sub 2}O{sub 4} nanocrystals were synthesized by a co-precipitation method. • Ag/CuFe{sub 2}O{sub 4} catalyst was prepared by the wetness impregnation strategy. • The structural properties of Ag/CuFe{sub 2}O{sub 4} were investigated by XRD, TEM, DRS, and XPS techniques. • Ag/CuFe{sub 2}O{sub 4} has higher photocatalytic activity. - Abstract: In this work, CuFe{sub 2}O{sub 4} nanoparticles were synthesized by a chemical co-precipitation route. The Ag/CuFe{sub 2}O{sub 4} catalyst was prepared based on the CuFe{sub 2}O{sub 4} nanoparticles by the incipient wetness impregnation strategy, which showed excellent photoelectric property and catalytic activity. The structural properties of these samples were systematically investigated by X-ray powder diffraction (XRD), transmission electronic microscopy (TEM), UV–vis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR) techniques. The photo-induced charge separation in the samples was demonstrated by surface photovoltage (SPV) measurement. The photocatalytic degradation of 4-CP by the Ag/CuFe{sub 2}O{sub 4} and CuFe{sub 2}O{sub 4} samples were comparatively studied under xenon lamp irradiation. The results indicate that the Ag/CuFe{sub 2}O{sub 4} sample exhibited the higher efficiency for the degradation of 4-CP.

  12. Isothermal stress relaxation in electroplated Cu films. II. Kinetic modeling Department of Aerospace Engineering and Engineering Mechanics, University of Texas, Austin, Texas

    E-Print Network [OSTI]

    Huang, Rui

    Isothermal stress relaxation in electroplated Cu films. II. Kinetic modeling Rui Huanga Department experimental results obtained from isothermal stress relaxation tests of electroplated Cu thin films-boundary and interface diffusivities in electroplated Cu films, which pro- vides a useful method to evaluate

  13. Effect of the Keggin anions on assembly of Cu{sup I}-bis(tetrazole) thioether complexes containing multinuclear Cu{sup I}-cluster

    SciTech Connect (OSTI)

    Wang Xiuli; Gao Qiang; Tian Aixiang; Hu Hailiang; Liu Guocheng

    2012-03-15

    In order to investigate the effect of polyoxometalate (POM) on the assembly of transition metal-bis(tetrazole) thioether complexes, three new complexes based on different Keggin anions and multinuclear Cu{sup I}-cluster [Cu{sup I}{sub 12}(bmtr){sub 9}(HSiMo{sub 12}O{sub 40}){sub 4}] (1), [Cu{sup I}{sub 3}(bmtr){sub 3}(PM{sub 12}O{sub 40})] (M=W for 2; Mo for 3) (bmtr=1,3-bis(1-methyl-5-mercapto-1,2,3,4-tetrazole)propane), have been hydrothermally synthesized and characterized by routine physical methods and single crystal X-ray diffraction. In compound 1, two kinds of nanometer-scale tetranuclear subunits linked by [SiMo{sub 12}O{sub 40}]{sup 4-} polyanions assemble a (3, 4)-connected three-dimensional (3D) self-penetrating framework. Compounds 2 and 3 are isostructural, exhibiting a 1D chain with [PW{sub 12}O{sub 40}]{sup 3-}/[PMo{sub 12}O{sub 40}]{sup 3-} polyanions and trinuclear clusters arranging alternately. The distinct structural differences between these POM-based Cu{sup I}-bmtr complexes of 1 and 2/3 maybe rest on the contrast of Keggin-type polyoxometalate with different central heteroatoms, which have been discussed in detail. In addition, the electrochemical properties of the title complexes have been investigated. - Graphical abstract: Three new complexes based on different Keggin anions and multinuclear Cu{sup I}-cluster have been synthesized under hydrothermal conditions. The Keggin polyanions with different central heteroatoms play a key role. Highlights: Black-Right-Pointing-Pointer The flexible bis(tetrazole)-based thioether ligand with some advantages have been used. Black-Right-Pointing-Pointer The effect of Keggin anions with different central heteroatoms has been discussed in detail. Black-Right-Pointing-Pointer The electrochemical behaviors and electrocatalysis property have been investigated.

  14. Low-lying levels in Cu-57 and the rp process 

    E-Print Network [OSTI]

    Zhou, XG; Dejbakhsh, H.; Gagliardi, Carl A.; Jiang, J.; Trache, L.; Tribble, Robert E.

    1996-01-01

    , and 2398 +/- 10 keV. The results are compared with well known excited states of the mirror nucleus Ni-57. Th, measured excited states of Cu-57 allow recalculation of the astrophysical reaction rate for the stellar radiative proton capture reaction Ni-56(p...

  15. High quality YBa2Cu307 Josephson junctions made by direct electron beam writing

    E-Print Network [OSTI]

    Nadgorny, Boris

    High quality YBa2Cu307 Josephson junctions made by direct electron beam writing S. K. Tolpygo, S beam writing over YBa,C&O, thin-tilm microbridges, using scanning transmission electron microscope fabricated by the technologically attractive method of direct electron beam writing. The idea of using

  16. LABORATORY EXPERIMENT 11 Determination of microelements (Mn and Cu) in tea leaves

    E-Print Network [OSTI]

    Nazarenko, Alexander

    : · Total contents - Mn and Cu in tea leaves by ashing and acid digestion · Extractable contents: hot water to determine the total contents of a component, such as a metal element, being measured. On the other hand used will depend on the purpose of the study. For example, it may be that the total content of a metal

  17. Nitric Oxide in Biological Denitrification: Fe/Cu Metalloenzyme and Metal Complex NOx Redox Chemistry

    E-Print Network [OSTI]

    Schroeder, Imke

    Nitric Oxide in Biological Denitrification: Fe/Cu Metalloenzyme and Metal Complex NOx Redox Nitrite Reductase: 1204 2. Copper Nitrite Reductases 1206 B. Nitric Oxide Reductase 1208 1. Structure 1208 Nitric Oxide Sensors, Scavengers, and Delivery Agents 1227 IV. Concluding Remarks 1229 V. Acknowledgments

  18. Phase transitions in delafossite CuLaO{sub 2} at high pressures

    SciTech Connect (OSTI)

    Salke, Nilesh P.; Rao, Rekha Gupta, M. K.; Mittal, R.; Garg, Alka B.; Achary, S. N.; Tyagi, A. K.

    2014-04-07

    Structural stability of a transparent conducting oxide CuLaO{sub 2} at high pressures is investigated using in-situ Raman spectroscopy, electrical resistance, and x-ray diffraction techniques. The present Raman investigations indicate a sequence of structural phase transitions at 1.8?GPa and 7?GPa. The compound remains in the first high pressure phase when pressure is released. Electrical resistance measurements carried out at high pressures confirm the second phase transition. These observations are further supported by powder x-ray diffraction at high pressures which also showed that a-axis is more compressible than c-axis in this compound. Fitting the pressure dependence of unit cell volume to 3{sup rd} order Birch-Murnaghan equation of state, zero pressure bulk modulus of CuLaO{sub 2} is determined to be 154(25) GPa. The vibrational properties in the ambient delafossite phase of CuLaO{sub 2} are investigated using ab-initio calculations of phonon frequencies to complement the Raman spectroscopic measurements. Temperature dependence of the Raman modes of CuLaO{sub 2} is investigated to estimate the anharmonicity of Raman modes.

  19. Submicron YBa2Cu3Ox ramp Josephson junctions Philippe V. Komissinski,a)

    E-Print Network [OSTI]

    Högberg, Björn

    into the submicron range, similar moves are likely in superconductor electronics. Smaller Josephson junctions with a high density of the superconducting critical current Jc permit, for ex- ample, rapid single flux on high-temperature superconductors, namely YBa2Cu3Ox YBCO , satisfy these conditions having high Ic

  20. High quality crystalline YBa2Cu307+ films on thin silicon substrates FL Haakenaasen

    E-Print Network [OSTI]

    Golovchenko, Jene A.

    High quality crystalline YBa2Cu307+ films on thin silicon substrates FL Haakenaasen Department) films with near perfect crystallinity have been grown epitaxially on Si(100) using two intermediate good crystallinity and be quite thin ((1 m)? Relativistic electrons are sent through the crystal

  1. Crystalline monolayer surface of liquid AuCuSiAgPd: Metallic glass former

    E-Print Network [OSTI]

    Pershan, Peter S.

    Crystalline monolayer surface of liquid Au­Cu­Si­Ag­Pd: Metallic glass former S. Mechler,1,a E of a two-dimensional crystalline monolayer phase for temperatures of up to about 50 K above the eutectic freezing in which a 2D crystalline phase forms within a sur- face segregated monolayer of liquid Ga alloys

  2. Synthesis of YBa2CU3O7 using sub-atmospheric processing

    DOE Patents [OSTI]

    Wiesmann, Harold; Solovyov, Vyacheslav

    2004-09-21

    The present invention is a method of forming thick films of crystalline YBa.sub.2 Cu.sub.3 O.sub.7 that includes forming a precursor film comprising barium fluoride (BaF.sub.2), yttrium (Y) and copper (Cu). The precursor film is heat-treated at a temperature above 500.degree. C. in the presence of oxygen, nitrogen and water vapor at sub-atmospheric pressure to form a crystalline structure. The crystalline structure is then annealed at about 500.degree. C. in the presence of oxygen to form the crystalline YBa.sub.2 Cu.sub.3 O.sub.7 film. The YBa.sub.2 Cu.sub.3 O.sub.7 film formed by this method has a resistivity of from about 100 to about 600 .mu.Ohm-cm at room temperature and a critical current density measured at 77 K in a magnetic field of 1 Tesla of about 1.0.times.10.sup.5 Ampere per square centimeter (0.1 MA/cm.sup.2) or greater.

  3. Charge Dynamics in Solution-Processed Nanocrystalline CuInS¬2 Solar Cells

    E-Print Network [OSTI]

    Halpert, Jonathan E.; Morgenstern, Frederik S. F.; Ehrler, Bruno; Vaynzof, Yana; Credgington, Dan; Greenham, Neil C.

    2015-05-07

    We investigate charge dynamics in solar cells constructed using solution-processed layers of CuInS2 (CIS) nanocrystals (NCs) as the electron donor and CdS as the electron acceptor. By using time-resolved spectroscopic techniques, we are able...

  4. Diffusion of indium and gallium in Cu(In,Ga)Se2 thin film solar cells

    E-Print Network [OSTI]

    Rockett, Angus

    Diffusion of indium and gallium in Cu(In,Ga)Se2 thin film solar cells O. Lundberga,*, J. Lua , A conversion efficiency of solar cells made from this material [1]. One of the special qualities of the CIGS improve the solar cell performance. In many of the different CIGS fabrication techniques, an in depth

  5. Local structure order in Pd78Cu6Si16 liquid

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Yue, G. Q.; Zhang, Y.; Sun, Y.; Shen, B.; Dong, F.; Wang, Z. Y.; Zhang, R. J.; Zheng, Y. X.; Kramer, M. J.; Wang, S. Y.; et al

    2015-02-05

    The short-range order (SRO) in Pd78Cu6Si16 liquid was studied by high energy x-ray diffraction and ab initio molecular dynamics (MD) simulations. The calculated pair correlation functions at different temperatures agree well with the experimental results. The partial pair correlation functions from ab intio MD simulations indicate that Si atoms prefer to be uniformly distributed while Cu atoms tend to aggregate. By performing structure analysis using Honeycutt-Andersen index, Voronoi tessellation, and atomic cluster alignment method, we show that the icosahedron and face-centered cubic SRO increase upon cooling. The dominant SRO is the Pd-centered Pd9Si2 motif, namely the structure of which motifmore »is similar to the structure of Pd-centered clusters in the Pd9Si2 crystal. The study further confirms the existence of trigonal prism capped with three half-octahedra that is reported as a structural unit in Pd-based amorphous alloys. The majority of Cu-centered clusters are icosahedra, suggesting that the presence of Cu is benefit to promote the glass forming ability.« less

  6. Selfdiffusion of adatoms, dimers, and vacancies on Cu(100) Ghyslain Boisvert ? and Laurent J. Lewis y

    E-Print Network [OSTI]

    Lewis, Laurent J.

    (GCM), Universit'e de Montr'eal, Case Postale 6128, Succursale Centre­Ville, Montr'eal, Qu'ebec, Canada of the diffusion of adatoms, dimers, and vacancies on Cu(100). It is found that the dynamical energy barriers is a ``prefactor'', kB the Boltzmann constant, T the absolute temperature, and EA the activation energy or barrier

  7. Magnetotransport properties of doped RuSr2GdCu2O8 

    E-Print Network [OSTI]

    McCrone, J E; Tallon, J L; Cooper, J R; MacLaughlin, A C; Attfield, J. Paul; Bernhard, C

    2003-01-01

    RuSr2GdCu2O8, in which magnetic order and superconductivity coexist with Tmag>Tc , is a complex material which poses new and important questions to our understanding of the interplay between magnetic and superconducting ...

  8. Cu2ZnSnS4 nanocrystals and graphene quantum dots for photovoltaics Xukai Xinab

    E-Print Network [OSTI]

    Lin, Zhiqun

    Cu2ZnSnS4 nanocrystals and graphene quantum dots for photovoltaics Jun Wang,a Xukai Xinab advances in the synthesis and utilization of CZTS nanocrystals and colloidal GQDs for photovoltaics emerged to achieve low cost, high perfor- mance photovoltaics, including organic solar cells,2­6 dye

  9. Electrodeposition of CuGaSe2 from Thiocyanate-Containing Electrolytes

    E-Print Network [OSTI]

    Suni, Ian Ivar

    . Manuscript received September 8, 2010. Published December 2, 2010. CuInxGa1-xSe2 CIGS thin film solar cells- nation velocities.1 Thin film solar cells promise significant economic benefits, because the optical, electrochemical deposition methods may be significantly less expensive for scale-up of thin film solar cells,3

  10. A thermogravimetric study of oxygen diffusion in YBa2Cu3O7-d

    E-Print Network [OSTI]

    Vazquez-Navarro, Maria Dolores

    YBa2Cu3O7-d (YBCO) was one of the first high temperature superconductors discovered, and its superconducting properties are strongly dependent on oxygen stoichiometry. A large amount of work has been done on the variation of stoichiometry and its...

  11. Combustion synthesis of calcium phosphate bioceramic powders A. Cu neyt Tas *,1

    E-Print Network [OSTI]

    Tas, A. Cuneyt

    Combustion synthesis of calcium phosphate bioceramic powders A. CuÈ neyt Tas *,1 Department)2; Combustion synthesis; Hydroxyapatite 1. Introduction Calcium hydroxyapatite (HA: Ca10(PO4)6(OH)2), the major), instead of water, as the precipitation medium. Self-propagating combustion synthesis (SPCS

  12. IAA-CU-13-11-06 Using independent combinations of CubeSat

    E-Print Network [OSTI]

    Gravdahl, Jan Tommy

    IAA-CU-13-11-06 Using independent combinations of CubeSat solar panels as sun sensors. Using solar panels on 5 of 6 sides of the NUTS CubeSat, we have a lot of atti- tude determinating information readily available during much of the periodical orbit. Using three or more solar panels

  13. Preparation of Bi-Sr-Ca-Cu-O superconductors from oxide-glass precursors

    DOE Patents [OSTI]

    Hinks, David G. (Lemont, IL); Capone, II, Donald W. (Northbridge, MA)

    1992-01-01

    A superconductor and precursor therefor from oxide mixtures of Ca, Sr, Bi and Cu. Glass precursors quenched to elevated temperatures result in glass free of crystalline precipitates having enhanced mechanical properties. Superconductors are formed from the glass precursors by heating in the presence of oxygen to a temperature below the melting point of the glass.

  14. X-ray imaging and controlled solidification of Al-Cu alloys toward microstructures by design

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Clarke, Amy J.; Tourret, Damien; Imhoff, Seth D.; Gibbs, Paul J.; Fezzaa, Kamel; Cooley, Jason C.; Lee, Wah -Keat; Deriy, Alex; Patterson, Brian M.; Papin, Pallas A.; et al

    2015-01-30

    X-ray imaging, which permits the microscopic visualization of metal alloy solidification dynamics, can be coupled with controlled solidification to create microstructures by design. This x-ray image shows a process-derived composite microstructure being made from a eutectic Al-17.1 at.%Cu alloy by successive solidification and remelting steps.

  15. Strong and ductile nanostructured Cu-carbon nanotube composite Hongqi Li,1,a

    E-Print Network [OSTI]

    Zhu, Yuntian T.

    . Past research effort mainly focused on the polymer/ceramic-based CNT composites5­8 and studies on metal in the CNT-metallic matrix composites has been growing rapidly for the past five years.9­21 GenerallyStrong and ductile nanostructured Cu-carbon nanotube composite Hongqi Li,1,a Amit Misra,1 Zenji

  16. CuZero: Embracing the Frontier of Interactive Visual Search for Informed Users

    E-Print Network [OSTI]

    Chang, Shih-Fu

    , statistical occurrence, and search result mining) are automatically recommended in real time after users enterCuZero: Embracing the Frontier of Interactive Visual Search for Informed Users Eric Zavesky Shih 10027 {emz,sfchang}@ee.columbia.edu ABSTRACT Users of most visual search systems suffer from two pri

  17. Magnetic and structural behavior of FeCo/Cu multilayers submitted to Kr irradiation

    E-Print Network [OSTI]

    Penkov, Julian Geshev

    Magnetic and structural behavior of FeCo/Cu multilayers submitted to Kr irradiation I.L. Graff Cedex, France Available online 19 January 2007 Abstract We have studied the effects of ion irradiation a phase transformation of FeCo alloy from bcc for the as-deposited sample to fcc after irradiation

  18. Possible Origin of Improved High Temperature Performance of Hydrothermally Aged Cu/Beta Zeolite Catalysts

    SciTech Connect (OSTI)

    Peden, Charles HF; Kwak, Ja Hun; Burton, Sarah D.; Tonkyn, Russell G.; Kim, Do Heui; Lee, Jong H.; Jen, H. W.; Cavattaio, Giovanni; Cheng, Yisun; Lambert, Christine

    2012-04-30

    The hydrothermal stability of Cu/beta NH3 SCR catalysts are explored here. In particular, this paper focuses on the interesting ability of this catalyst to maintain and even enhance high-temperature performance for the "standard" SCR reaction after modest (900 °C, 2 hours) hydrothermal aging. Characterization of the fresh and aged catalysts was performed with an aim to identify possible catalytic phases responsible for the enhanced high temperature performance. XRD, TEM and 27Al NMR all showed that the hydrothermally aging conditions used here resulted in almost complete loss of the beta zeolite structure between 1 and 2 hours aging. While the 27Al NMR spectra of 2 and 10 hour hydrothermally-aged catalysts showed significant loss of a peak associated with tetrahedrally-coordinated Al species, no new spectral features were evident. Two model catalysts, suggested by these characterization data as possible mimics of the catalytic phase formed during hydrothermal aging of Cu/beta, were prepared and tested for their performance in the "standard" SCR and NH3 oxidation reactions. The similarity in their reactivity compared to the 2 hour hydrothermally-aged Cu/beta catalyst suggests possible routes for preparing multi-component catalysts that may have wider temperature windows for optimum performance than those provided by current Cu/zeolite catalysts.

  19. Physicochemical Characterization of the Bacterial Cu(I) Sensor CsoR 

    E-Print Network [OSTI]

    Ma, Zhen

    2011-02-22

    from the pathogenic S. aureus Newman strain was identified and characterized, and was found to exhibit biochemical properties similar to those of Mtb and Bsu CsoRs. Parallels between Cu(I)-sensing CsoRs and functional orthologs in the CsoR/RcnR family...

  20. Cu(In,Ga)Se2based Photovoltaics: Challenges and Opportunities

    E-Print Network [OSTI]

    Firestone, Jeremy

    Cu(In,Ga)Se2­based Photovoltaics: Challenges and Opportunities William Shafarman Institute of Energy Conversion University of Delaware #12;Thin Film Photovoltaics Potential for low cost PV using a Thickness K.Kim, et al., IEEE J. Photovoltaics, 3, 446 (2013). 2 µm, 60 min reaction 1 µm, 25 min reaction 0

  1. DOI: 10.1002/cphc.200600060 Cu2O Nanowires in an Alumina Template

    E-Print Network [OSTI]

    Okamoto, Koichi

    performed to estimate the optical band gap of Cu2O [a] Dr. J. Lee Fuel Cell Research Center, Korea Institute] Dr. J. Choi Nanomaterials Application Division Korea Institute of Ceramic Engineering and Technology, attractive properties, as well as their unique applications compared with bulk materi- als.[1

  2. Nanostructural considerations in giant magnetoresistive Co-Cu-based symmetric spin valves Harsh Deep Chopra*

    E-Print Network [OSTI]

    Chopra, Harsh Deep

    , for example, magnetic-field sensors and read-heads in data- storage devices.11 A key impedimentNanostructural considerations in giant magnetoresistive Co-Cu-based symmetric spin valves Harsh, on the nanostructure and resulting giant magnetoresistive properties of symmetric spin valves of the type Ni

  3. CU-CAS-02-08 CENTER FOR AEROSPACE STRUCTURES Volumetric Constraint Models

    E-Print Network [OSTI]

    Felippa, Carlos A.

    CU-CAS-02-08 CENTER FOR AEROSPACE STRUCTURES Volumetric Constraint Models for Anisotropic Elastic 429 BOULDER, COLORADO 80309 #12;Volumetric Constraint Models for Anisotropic Elastic Solids Carlos A. Conclusion 5 #12;Volumetric Constraint Models for Anisotropic Elastic Solids Carlos A. Felippa and Eugenio O

  4. HIGH EFFICIENCY Cu(ln,Ga)SepBASED SOLAR CELLS: PROCESSING OF NOVEL ABSORBER STRUCTURES

    E-Print Network [OSTI]

    Scofield, John H.

    HIGH EFFICIENCY Cu(ln,Ga)SepBASED SOLAR CELLS: PROCESSING OF NOVEL ABSORBER STRUCTURES Miguel A conditions (ASTM E892-87, Global 1000 W/m'). The first attempts to translate this development to larger areas a device performance point of view. In terms of lightweight flexible substrate-for potential space

  5. Synthesis, crystal and electronic structure, and physical properties of the new lanthanum copper telluride La{sub 3}Cu{sub 5}Te{sub 7}

    SciTech Connect (OSTI)

    Zelinska, Mariya; Assoud, Abdeljalil [Department of Chemistry, University of Waterloo, Waterloo, ON, Canada N2L 3G1 (Canada); Kleinke, Holger, E-mail: kleinke@uwaterloo.c [Department of Chemistry, University of Waterloo, Waterloo, ON, Canada N2L 3G1 (Canada)

    2011-03-15

    The new lanthanum copper telluride La{sub 3}Cu{sub 5-x}Te{sub 7} has been obtained by annealing the elements at 1073 K. Single-crystal X-ray diffraction studies revealed that the title compound crystallizes in a new structure type, space group Pnma (no. 62) with lattice dimensions of a=8.2326(3) A, b=25.9466(9) A, c=7.3402(3) A, V=1567.9(1) A{sup 3}, Z=4 for La{sub 3}Cu{sub 4.86(4)}Te{sub 7}. The structure of La{sub 3}Cu{sub 5-x}Te{sub 7} is remarkably complex. The Cu and Te atoms build up a three-dimensional covalent network. The coordination polyhedra include trigonal LaTe{sub 6} prisms, capped trigonal LaTe{sub 7} prisms, CuTe{sub 4} tetrahedra, and CuTe{sub 3} pyramids. All Cu sites exhibit deficiencies of various extents. Electrical property measurements on a sintered pellet of La{sub 3}Cu{sub 4.86}Te{sub 7} indicate that it is a p-type semiconductor in accordance with the electronic structure calculations. -- Graphical abstract: Oligomeric unit comprising interconnected CuTe{sub 3} pyramids and CuTe{sub 4} tetrahedra. Display Omitted Research highlights: {yields} La{sub 3}Cu{sub 5-x}Te{sub 7} adopts a new structure type. {yields} All Cu sites exhibit deficiencies of various extents. {yields} The coordination polyhedra include trigonal LaTe{sub 6} prisms, capped trigonal LaTe{sub 7} prisms, CuTe{sub 4} tetrahedra and CuTe{sub 3} pyramids. {yields} La{sub 3}Cu{sub 5-x}Te{sub 7} is a p-type semiconductor.

  6. Composition and grain size effects on the structural and mechanical properties of CuZr nanoglasses

    SciTech Connect (OSTI)

    Adibi, Sara [Institute of High Performance Computing, A*STAR, 138632 Singapore (Singapore); Mechanical Engineering Department, National University of Singapore, 117576 Singapore (Singapore); Branicio, Paulo S., E-mail: branicio@ihpc.a-star.edu.sg; Zhang, Yong-Wei [Institute of High Performance Computing, A*STAR, 138632 Singapore (Singapore); Joshi, Shailendra P., E-mail: Shailendra@nus.edu.sg [Mechanical Engineering Department, National University of Singapore, 117576 Singapore (Singapore)

    2014-07-28

    Nanoglasses (NGs), metallic glasses (MGs) with a nanoscale grain structure, have the potential to considerably increase the ductility of traditional MGs while retaining their outstanding mechanical properties. We investigated the effects of composition on the structural and mechanical properties of CuZr NG films with grain sizes between 3 to 15?nm using molecular dynamics simulations. Results indicate a transition from localized shear banding to homogeneous superplastic flow with decreasing grain size, although the critical average grain size depends on composition: 5?nm for Cu{sub 36}Zr{sub 64} and 3?nm for Cu{sub 64}Zr{sub 36}. The flow stress of the superplastic NG at different compositions follows the trend of the yield stress of the parent MG, i.e., Cu{sub 36}Zr{sub 64} yield/flow stress: 2.54?GPa/1.29?GPa and Cu{sub 64}Zr{sub 36} yield/flow stress: 3.57?GPa /1.58?GPa. Structural analysis indicates that the differences in mechanical behavior as a function of composition are rooted at the distinct statistics of prominent atomic Voronoi polyhedra. The mechanical behavior of NGs is also affected by the grain boundary thickness and the fraction of atoms at interfaces for a given average grain size. The results suggest that the composition dependence of the mechanical behavior of NGs follows that of their parent MGs, e.g., a stronger MG will generate a stronger NG, while the intrinsic tendency for homogeneous deformation occurring at small grain size is not affected by composition.

  7. Synthesis and Evaluation of Cu/SAPO-34 Catalysts for NH3-SCR 2: Solid-state Ion Exchange and One-pot Synthesis

    SciTech Connect (OSTI)

    Gao, Feng; Walter, Eric D.; Washton, Nancy M.; Szanyi, Janos; Peden, Charles HF

    2015-01-01

    Cu-SAPO-34 catalysts are synthesized using two methods: solid-state ion exchange (SSIE) and one-pot synthesis. SSIE is conducted by calcining SAPO-34/CuO mixtures at elevated temperatures. For the one-pot synthesis method, Cu-containing chemicals (CuO and CuSO4) are added during gel preparation. A high-temperature calcination step is also needed for this method. Catalysts are characterized with surface area/pore volume measurements, temperature programmed reduction (TPR), electron paramagnetic resonance (EPR) and nuclear magnetic resonance (NMR) spectroscopies, and scanning electron microscopy (SEM). Catalytic properties are examined using standard ammonia selective catalytic reduction (NH3-SCR) and ammonia oxidation reactions. In Cu-SAPO-34 samples formed using SSIE, Cu presents both as isolated Cu2+ ions and unreacted CuO. The former is highly active and selective in NH3-SCR, while the latter catalyzes a side reaction; notably, the non-selective oxidation of NH3 above 350 ºC. Using the one-pot method followed by a high-temperature aging treatment, it is possible to form Cu SAPO-34 samples with predominately isolated Cu2+ ions at low Cu loadings. However at much higher Cu loadings, isolated Cu2+ ions that bind weakly with the CHA framework and CuO clusters also form. These Cu moieties are very active in catalyzing non-selective NH3 oxidation above 350 ºC. Low-temperature reaction kinetics indicate that Cu-SAPO-34 samples formed using SSIE have core-shell structures where Cu is enriched in the shell layers; while Cu is more evenly distributed within the one-pot samples. Reaction kinetics also suggest that at low temperatures, the local environment next to Cu2+ ion centers plays little role on the overall catalytic properties. The authors gratefully acknowledge the US Department of Energy (DOE), Energy Efficiency and Renewable Energy, Vehicle Technologies Office for the support of this work. The research described in this paper was performed at the Environmental Molecular Sciences Laboratory (EMSL), a national scientific user facility sponsored by the DOE’s Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory (PNNL). PNNL is operated for the US DOE by Battelle under contract number DE-AC05-76RL01830. The authors also thank Shari Li (PNNL) for surface area/pore volume measurements, and Bruce W. Arey (PNNL) for SEM measurements. Discussions with Drs. A. Yezerets, K. Kamasamudram, J.H. Li, N. Currier and J.Y. Luo from Cummins, Inc. and H.Y. Chen and H. Hess from Johnson-Matthey are greatly appreciated.

  8. Electrodeposition, characterization and morphological investigations of NiFe/Cu multilayers prepared by pulsed galvanostatic, dual bath technique

    SciTech Connect (OSTI)

    Esmaili, S.; Bahrololoom, M.E.; Kavanagh, K.L.

    2011-02-15

    NiFe/Cu multilayers were grown sequentially by pulsed electrodeposition on copper (Cu) substrates. The layers were prepared in galvanostatic mode using a dual bath technique. The morphology, thickness, roughness and composition of the layers were studied using scanning electron microscopy, scanning transmission electron microscopy with energy dispersive X-ray spectroscopy, X-ray diffraction and atomic force microscopy. Analysis showed that the resulting multilayers were continuous layers with a root mean square roughness of 30 nm and a grain size of 20-60 nm. The Cu substrate and the electrodeposited Cu layer were preferentially (200) oriented while the NiFe layers were polycrystalline but with a preferred (200) texture. The thinnest multilayers produced were 20/40, NiFe/Cu, respectively. - Research Highlights: {yields} Thin MLs of Cu and Py can be ED utilizing a pulsed-galvanostatic, DBT. {yields} The resulting multilayers were continuous layers with an rms of 30 nm. {yields} The smallest average thickness achieved by DBT was 40 nm/20 nm for Cu/NiFe.

  9. CuCo2O4 ORR/OER Bi-functional catalyst: Influence of synthetic approach on performance

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Serov, Alexey; Andersen, Nalin I.; Roy, Aaron J.; Matanovic, Ivana; Artyushkova, Kateryna; Atanassov, Plamen

    2015-02-07

    A series of CuCo2O4 catalysts were synthesized by pore forming, sol-gel, spray pyrolysis and sacrificial support methods. Catalysts were characterized by XRD, SEM, XPS and BET techniques. The electrochemical activity for the oxygen reduction and oxygen evolution reactions (ORR and OER) was evaluated in alkaline media by RRDE. Density Functional Theory was used to identify two different types of active sites responsible for ORR/OER activity of CuCo2O4 and it was found that CuCo2O4 can activate the O-O bond by binding molecular oxygen in bridging positions between Co or Co and Cu atoms. It was found that the sacrificial support methodmore »(SSM) catalyst has the highest performance in both ORR and OER and has the highest content of phase-pure CuCo2O4. It was shown that the presence of CuO significantly decreases the activity in oxygen reduction and oxygen evolution reactions. As a result, the half-wave potential (E1/2) of CuCo2O4-SSM was found as 0.8 V, making this material a state-of-the-art, unsupported oxide catalyst.« less

  10. Application of glucose as a green capping agent and reductant to fabricate CuI micro/nanostructures

    SciTech Connect (OSTI)

    Tavakoli, Farnosh; Salavati-Niasari, Masoud; Ghanbari, Davood; Saberyan, Kamal; Hosseinpour-Mashkani, S. Mostafa

    2014-01-01

    Graphical abstract: - Highlights: • CuI nanostructures were prepared via a simple precipitation method. • Glucose as a green capping agent and reductant was applied. • The effect of glucose concentration on the morphology of CuI was investigated. • According to XRD results, pure cubic phase CuI have been formed by using glucose. - Abstract: In this work, CuI micro/nanostructures have been successfully prepared via a simple precipitation route at room temperature. By using glucose as a clean reducing agent with different concentrations, CuI micro/nanostructures with various morphologies were obtained. Besides glucose, Na{sub 2}SO{sub 3}, KBH{sub 4} and N{sub 2}H{sub 4}·H{sub 2}O have been applied as reductant. X-ray diffraction (XRD), scanning electron microscopy (SEM), photoluminescence spectroscopy, X-ray energy dispersive spectroscopy (EDS) and Fourier transformed infrared (FT-IR) spectroscopy were used to characterize the as-produced CuI micro/nanostructures. According to the XRD results, it was found that pure cubic phase CuI have been formed by using glucose.

  11. Pulse studies to decipher the role of surface morphology in CuO/CeO? nanocatalysts for the water gas shift reaction

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rodriguez, Jose A.; Zhao, Fuzhen; Liu, Zongyuan; Xu, Wenqian; Yao, Siyu; Si, Rui; Johnston-Peck, Aaron C.; Martinez-Arias, Arturo; Hanson, Jonathan C.; Senanayake, Sanjaya D.

    2015-01-23

    The water-gas shift reaction (WGS, CO + H?O ? CO?) was studied over CuO/CeO? catalysts with two different ceria particle morphohologies, in the form of nanospheres (ns) and nanocubes (nc). To understand the strong dependence of the WGS reaction activity on the ceria nanoshapes, pulses of CO (without and with water vapor) were employed during in situ X-ray diffraction (XRD) and X-ray absoprtion near edge structure (XANES) measurements done to characterize the catalysts. The results showed that CuO/CeO? (ns) exhibited a substantially better activity than CuO/CeO? (nc). The higher activity was associated with the unique properties of CuO/CeO? (ns), suchmore »as the easier reduction of highly dispersed CuO to metallic Cu, the stability of metallic Cu and a larger concentration Ce³? in CeO? (ns).« less

  12. Effects of substrate temperature and Cu underlayer thickness on the formation of SmCo{sub 5}(0001) epitaxial thin films

    SciTech Connect (OSTI)

    Ohtake, Mitsuru; Nukaga, Yuri; Futamoto, Masaaki; Kirino, Fumiyoshi

    2010-05-15

    SmCo{sub 5}(0001) epitaxial thin films were prepared on Cu(111) underlayers heteroepitaxially grown on Al{sub 2}O{sub 3}(0001) single-crystal substrates by molecular beam epitaxy. The effects of substrate temperature and Cu underlayer thickness on the crystallographic properties of SmCo{sub 5}(0001) epitaxial films were investigated. The Cu atoms of underlayer diffuse into the SmCo{sub 5} film and substitute the Co sites in SmCo{sub 5} structure forming an alloy compound of Sm(Co,Cu){sub 5}. The ordered phase formation is enhanced with increasing the substrate temperature and with increasing the Cu underlayer thickness. The Cu atom diffusion into the SmCo{sub 5} film is assisting the formation of Sm(Co,Cu){sub 5} ordered phase.

  13. Pulse studies to decipher the role of surface morphology in CuO/CeO? nanocatalysts for the water gas shift reaction

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rodriguez, Jose A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Zhao, Fuzhen [South-Central Univ. for Nationalities, Wuhan, Hubei (China); Brookhaven National Lab., Upton, NY (United States); Liu, Zongyuan [Brookhaven National Lab. (BNL), Upton, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Yao, Siyu [Brookhaven National Lab. (BNL), Upton, NY (United States); Si, Rui [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnston-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Martinez-Arias, Arturo [Inst. de Catalisis y Petroleoquimica, Consejo Superior de Investigaciones Cientificas, Madrid (Spain); Hanson, Jonathan C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-03-01

    The water-gas shift reaction (WGS, CO + H?O ? CO?) was studied over CuO/CeO? catalysts with two different ceria particle morphohologies, in the form of nanospheres (ns) and nanocubes (nc). To understand the strong dependence of the WGS reaction activity on the ceria nanoshapes, pulses of CO (without and with water vapor) were employed during in situ X-ray diffraction (XRD) and X-ray absoprtion near edge structure (XANES) measurements done to characterize the catalysts. The results showed that CuO/CeO? (ns) exhibited a substantially better activity than CuO/CeO? (nc). The higher activity was associated with the unique properties of CuO/CeO? (ns), such as the easier reduction of highly dispersed CuO to metallic Cu, the stability of metallic Cu and a larger concentration Ce³? in CeO? (ns).

  14. Devitrification kinetics and phase selection mechanisms in Cu-Zr metallic glasses

    SciTech Connect (OSTI)

    Kalay, Ilkay

    2010-12-15

    Metallic glasses have been a promising class of materials since their discovery in the 1960s. Indeed, remarkable chemical, mechanical and physical properties have attracted considerable attention, and several excellent reviews are available. Moreover, the special group of glass forming alloys known as the bulk metallic glasses (BMG) become amorphous solids even at relatively low cooling rates, allowing them to be cast in large cross sections, opening the scope of potential applications to include bulk forms and net shape structural applications. Recent studies have been reported for new bulk metallic glasses produced with lower cooling rates, from 0.1 to several hundred K/s. Some of the application products of BMGs include sporting goods, high performance springs and medical devices. Several rapid solidification techniques, including melt-spinning, atomization and surface melting have been developed to produce amorphous alloys. The aim of all these methods is to solidify the liquid phase rapidly enough to suppress the nucleation and growth of crystalline phases. Furthermore, the production of amorphous/crystalline composite (ACC) materials by partial crystallization of amorphous precursor has recently given rise to materials that provide better mechanical and magnetic properties than the monolithic amorphous or crystalline alloys. In addition, these advances illustrate the broad untapped potential of using the glassy state as an intermediate stage in the processing of new materials and nanostructures. These advances underlie the necessity of investigations on prediction and control of phase stability and microstructural dynamics during both solidification and devitrification processes. This research presented in this dissertation is mainly focused on Cu-Zr and Cu-Zr-Al alloy systems. The Cu-Zr binary system has high glass forming ability in a wide compositional range (35-70 at.% Cu). Thereby, Cu-Zr based alloys have attracted much attention according to fundamental research on the behaviors of glass forming alloys. Further motivation arising from the application of this system as a basis for many BMGs and ACC materials; the Cu-Zr system warrants this attention and offers great potential for the development of new materials. However, the prediction and control of microstructural evolution during devitrification remains challenging because of the complex devitrification behavior of the Cu-Zr binary alloy which is arising from the competition of metastable and stable phases and diversity of crystal structures. This dissertation details a systematic fundamental investigation into the mechanisms and kinetics of the various crystallization transformation processes involved in the overall devitrification response of Cu-Zr and Cu-Zr-Al glasses. Various isothermal and nonisothermal treatments are employed, and the structural response is characterized using bulk X-ray and thermal analysis methods as well as nanoscale microscopic analysis methods, revealing structural and chemical details down to the atomic-scale. By carefully combining techniques such as differential scanning calorimetry (DSC), in-situ synchrotron high energy X-ray diffraction (HEXRD), and transmission electron microscopy (TEM) to quantify the characterization transformations, this research has uncovered numerous details concerning the atomistic mechanisms of crystallization and has provided much new understanding related to the dominant phases, the overall reaction sequences, and the rate-controlling mechanisms. As such this work represents a substantial step forward in understanding these transformations and provides a clear framework for further progress toward ultimate application of controlled devitrification processing for the production of new materials with remarkable properties.

  15. Aging Effects on the Microstructure, Surface Characteristics and Wettability of Cu Pretinned with Sn-Pb Solders

    E-Print Network [OSTI]

    Linch, H.S.

    2010-01-01

    solders. Coatings were applied using electroplating or hotcoatings are usually Sn-Pb solders and are often applied to Cu substrates using electroplatingdipped coatings. [9] Based on these ranges, electroplating

  16. A three-dimensional Macroporous Cu/SnO2 composite anode sheet prepared via a novel method

    SciTech Connect (OSTI)

    Xu, Wu; Canfield, Nathan L.; Wang, Deyu; Xiao, Jie; Nie, Zimin; Zhang, Jiguang

    2010-11-01

    Macroporous Cu/SnO2 composite anode sheets were prepared by a novel method which is based on slurry blending, tape casting, sintering, and reducing of metal oxides. Such composite Cu/SnO2 anode sheets have no conducting carbons and binders, and show improved discharge capacity and cycle life than the SnO2 electrode from conventional tape-casting method on Cu foil. This methodology produces limited wastes and is also adaptable to many other materials. It is easy for industrial scale production. With the optimization of particle size of the metal oxide, pore size, pore volume and other factors, this kind of macroporous Cu/SnO2 composite anode sheets could give significantly improved capacity and cycle life.

  17. Three approaches to economical photovoltaics: conformal Cu2S, organic luminescent films, and PbSe nanocrystal superlattices

    E-Print Network [OSTI]

    Carbone, Ian Anthony

    2013-01-01

    Degradation in CDS-Cu2S photovoltaic cells. Semiconductorcell with cuins2: A photovoltaic cell concept using an ex-and the the photovoltaic action in solar cell devices. The

  18. Systematic study of the Taylor method for production of cu-based shape memory alloy microwires : a master's thesis

    E-Print Network [OSTI]

    Szablinski, Eric (Eric Allen)

    2012-01-01

    The Taylor method is a proven way to produce Cu-based shape memory microwires that aren't plagued by problems typical in polycrystalline copper SMAs produced by other methods. Here we set out to expand and refine this ...

  19. Millimeter size single crystals of superconducting YBa.sub.2 Cu.sub.3 O.sub .

    DOE Patents [OSTI]

    Damento, Michael A. (Ames, IA); Gschneidner, Jr., Karl A. (Ames, IA)

    1989-04-25

    A method of growing large, up to 1 mm size single crystals of superconducting YBa.sub.2 Cu.sub.3 O.sub.x, wherein x equals from 6.5 to 7.2.

  20. Millimeter size single crystals of superconducting YBa[sub 2]Cu[sub 3]O[sub x

    DOE Patents [OSTI]

    Damento, M.A.; Gschneidner, K.A. Jr.

    1989-04-25

    A method of growing large, up to 1 mm size single crystals of superconducting YBa[sub 2]Cu[sub 3]O[sub x], wherein x equals from 6.5 to 7.2 is disclosed.