Sample records for ti ons ma

  1. MA.+'

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling7111AWell:F E ,"^ I This pageTJ3: 7-ZMA.+' t

  2. MA FAshiON dEsigN MA FAshiON KNiTwEAr dEsigN

    E-Print Network [OSTI]

    Evans, Paul

    focus on ethics, climate change and environmental impact, this concept is aimed at reinventionMA FAshiON dEsigN MA FAshiON KNiTwEAr dEsigN MA FAshiON ANd TEXTilEs by rPT MA TEXTilE dEsigN ANd iNNOvATiON FAshiON, KNiTwEAr ANd TEXTilE dEsigN #12;yU XUAN gAN MA FAshion Design Sophisticated Details and 3D

  3. MA 22400 -- CALCULATOR POLICY

    E-Print Network [OSTI]

    OwenDavis

    2014-08-22T23:59:59.000Z

    MA 22400 -- CALCULATOR POLICY. A ONE-LINE scientific calculator is REQUIRED. No other calculator is allowed. RECOMMENDED: TI-30Xa calculator

  4. ON SOLAR NEUTRINO PROBLEM TIAN MA AND SHOUHONG WANG

    E-Print Network [OSTI]

    ON SOLAR NEUTRINO PROBLEM TIAN MA AND SHOUHONG WANG Abstract. The current neutrino oscillation an alternative resolution to the solar neutrino loss problem. Contents 1. Introduction 1 2. Discrepancy of Solar, there are three flavors of neutrinos: the electron neutrino e, the tau neutrino and the mu neutrino µ. The solar

  5. MA 35300

    E-Print Network [OSTI]

    Emphasis on problem solving and applications from science, engineering, economics, or business. Not open to students with credit in MA 51100. Typically ...

  6. MA 353

    E-Print Network [OSTI]

    Emphasis on problem solving and applications from science, engineering, economics, or business. Not open to students with credit in MA 51100. Typically ...

  7. T H E S C H O OL O F P H A R M A C Y A ND P H A R MA C E U TI C A L S C I E NC ES P H A R MA C EU T I C A L S C I EN C E S T H E S C HO O L OF P HA R MA C Y A N D

    E-Print Network [OSTI]

    Pittendrigh, Barry

    1 T H E S C H O OL O F P H A R M A C Y A ND P H A R MA C E U TI C A L S C I E NC ES P H A R MA C EU T I C A L S C I EN C E S T H E S C HO O L OF P HA R MA C Y A N D S C IE N C E S T H E S C H O O L O F P H A RM A C Y A N D P H A R M A C E U T IC A L P H A R M A C Y A ND P H A R MA C E U TI C A L P U R

  8. MA 41600

    E-Print Network [OSTI]

    MA 41600 164 - Textbook: Probability, Jim Pitman; MA 41600 165 - Textbook: A First Course in Probability, Sheldon M. Ross; MA 41600 165 - Textbook: ...

  9. A rational minor actinide (MA) recycling concept based on innovative oxide fuel with high AM content

    SciTech Connect (OSTI)

    Tanaka, Kenya; Sato, Isamu; Ishii, Tetsuya; Yoshimochi, Hiroshi; Asaga, Takeo [Japan Atomic Energy Agency, 4002 Narita-cho, O-arai-machi, Higasiibaraki-gun, Ibaraki-ken, 311-1393 (Japan); Kurosaki, Ken [Osaka University, 2-1 Yamadaoka, Suita-shi, Osaka 565-0871 (Japan)

    2007-07-01T23:59:59.000Z

    A rational MA recycle concept based on high Am content fuel has been proposed. A design study of an Am- MOX fabrication plant, which is a key facility for the MA recycle concept, has been done and the facility concept was clarified from the viewpoint of basic process viability. Preliminary cost estimation suggested that the total construction cost of the MA recycle facilities including Am-MOX, Np-MOX and MA recovery could be comparable with that of the large scale LWR-MOX fabrication plant required for plutonium in LWR fuel cycle. (authors)

  10. MA AP MA MA MA AP AP MA MA MA AP AP

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9November 6, In this issue: -J EmissionsF 3 SO.MA

  11. MA 17300

    E-Print Network [OSTI]

    MA 17300 011 - UNIV 117 MWF 12:30pm - McReynolds, David (MATH 704); MA 17300 012 - REC 114 TR 12:30pm - Steiner, Avram (MATH 739); MA 17300 ...

  12. MA 35100

    E-Print Network [OSTI]

    MA 35100 001 - REC 121 MWF 08:30am - Baudoin, Fabrice (MATH 438); MA 35100 004 - UNIV 001 MWF 10:30am - Mcreynolds, David (MATH 704); MA 35100 ...

  13. MA 59800

    E-Print Network [OSTI]

    ... MA 59800 518 - REC 309 M 03:30pm - McReynolds, David (MATH 704); MA 59800 519 - MATH 215 R 04:00pm - McReynolds, David (MATH 704); MA 59800

  14. MA 59800

    E-Print Network [OSTI]

    ... MA 59800 014 - UNIV 101 TR 10:00am - Weigel, Peter (MATH 1046); MA 59800 016 - MATH 205 TR 02:30pm - McReynolds, David (MATH 704); MA 59800 ...

  15. MA 59800

    E-Print Network [OSTI]

    ... MA 59800 013 - REC 225 MW 10:00am - Hora, Raphael (MATH 441); MA 59800 018 - UNIV 301 TR 01:00pm - McReynolds, David (MATH 704); MA 59800

  16. MA 66100

    E-Print Network [OSTI]

    Prerequisite: MA 54400, 55400. Typically offered Fall Spring Summer. Instructor Info. MA 66100 001 - MATH 215 TR 09:00am - McReynolds, David (MATH 704) ...

  17. Validation of Climate Models The CliMaTiC sysTeM is constituted by four inti-

    E-Print Network [OSTI]

    Lucarini, Valerio

    of macroscopic driving and modulating agents, such as solar heating, Earth's rotation, and gravitation Panel on Climate Change (IPCC4AR) are unprecedented. The validation or auditing--overall evaluation

  18. Oriented Hierarchical Porous TiO2 Nanowires on Ti Substrate: Evolution of Nanostructures for Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Park, Byungwoo

    of highly-oriented anatase TiO2 nanocrystals, are adopted as photoelectrodes in dye-sensitized solar cells. [1­4]. In particular, lightweight and flexible dye-sensitized solar cells (DSSCs) have received muchOriented Hierarchical Porous TiO2 Nanowires on Ti Substrate: Evolution of Nanostructures for Dye-Sensitized

  19. Molecular Hydrogen Formation from Proximal Glycol Pairs on TiO2...

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

    Hydrogen Formation from Proximal Glycol Pairs on TiO2(110). Molecular Hydrogen Formation from Proximal Glycol Pairs on TiO2(110). Abstract: Understanding hydrogen formation on TiO2...

  20. Nonthermal Water Splitting on Rutile TiO2: Electron-Stimulated...

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

    Nonthermal Water Splitting on Rutile TiO2: Electron-Stimulated Production of H-2 and O-2 in Amorphous Solid Water Films on TiO2 Nonthermal Water Splitting on Rutile TiO2:...

  1. MA 59800

    E-Print Network [OSTI]

    ... (MATH 614); MA 59800 027 - UNIV 117 TR 01:30pm - Dadarlat, Marius (MATH 708); MA 59800 029 - REC 317 TR 10:30am - McReynolds, David (MATH 704) ...

  2. MA 59800

    E-Print Network [OSTI]

    ... McReynolds, David (MATH 704); MA 59800 518 - REC 123 F 11:30am - McReynolds, David (MATH 704); MA 59800 519 - REC 123 F 06:30pm - McReynolds, ...

  3. MA 37500

    E-Print Network [OSTI]

    MA 37500 042 - UNIV 003 TR 10:30am - McReynolds, David (MATH 704); MA 37500 043 - UNIV 003 TR 12:00pm - McReynolds, David (MATH 704) ...

  4. MA 16100

    E-Print Network [OSTI]

    MA 16100, Spring 2015. Plane Analytic Geometry And Calculus I. Course Info. Syllabus · Assignment Sheet · Emergency Prepardness · Daily Course Calendar

  5. Effect of N2 /Ar gas flow ratio on the deposition of TiN/Ti coatings on NiTi shape memory alloy by PIIID

    E-Print Network [OSTI]

    Zheng, Yufeng

    and deposition technique. The effect of nitrogen to argon gas flow ratio on the surface characteristics, chemical in standard uncoated titanium implants [7]. To date, NiTi alloy has found numerous clinical applica- tions. The nitrogen to argon ratio was changed in order to obtain the stoichiometric TiN coating. The surface

  6. Acetone and Water on TiO(110): H/D Exchange. | EMSL

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

    TiO(110): HD Exchange. Acetone and Water on TiO(110): HD Exchange. Abstract: Isotopic HD exchange between coadsorbed acetone and water on the TiO&8322;(110) surface was...

  7. Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions...

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

    Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions with Oxygen Vacancies. Tetraoxygen on Reduced Ti02(110): Oxygen Adsorption and Reactions with Oxygen Vacancies....

  8. AABBSSTTRRAACCTT MA, RUIQI. The Effect of In-Vehicle Automation and Reliability on Driver Situation

    E-Print Network [OSTI]

    Kaber, David B.

    AABBSSTTRRAACCTT MA, RUIQI. The Effect of In-Vehicle Automation and Reliability on Driver Situation by automation and in- vehicle device use. Specifically, this study investigated the implications of adaptive; investigate the effect of varying reliability of in-vehicle automation (navigation aids) on driver SA

  9. Tectonic and climatic controls on long-term silicate weathering in Asia since 5 Ma

    E-Print Network [OSTI]

    Clift, Peter

    Tectonic and climatic controls on long-term silicate weathering in Asia since 5 Ma Shiming Wan,1 of paleo-climate and pCO2, the history of long- term silicate weathering in the Himalaya and Tibetan Plateau (HTP) during the late Cenozoic remains unclear. We recon- struct 5 m.y. of silicate sedimentary

  10. MA 450

    E-Print Network [OSTI]

    Course Description. Credit Hours: 3.00. This course, which is essentially the first half of MA 55300, is recommended for students wanting a more substantial ...

  11. MA 266

    E-Print Network [OSTI]

    Page 1. MA 266. Final Exam December 16, 2003. All INSTRUCTORS. 7:00 p.m. — 9:00 p.m.. LAMBERT FLDHS. Page 2.

  12. MA 151

    E-Print Network [OSTI]

    Page 1. MA 151. Final Exam December 17, 2003. ALL INSTRUCTORS. 1:00 pm. — 3:00 pm. LAMBERT FLDHS. Page 2.

  13. MA 224

    E-Print Network [OSTI]

    Page 1. MA 224. Final Exam December 19, 2003 3:20 pm. — 5:20 pm. ALL INSTRUCTORS LAMBERT FLDHS. Page 2.

  14. MA 265

    E-Print Network [OSTI]

    Page 1. MA 265. Final Exam December 17, 2003 10:20 am. - 12:20 pm. All INSTRUCTORS LAMBERT FLDHS. Page 2.

  15. MA 15400

    E-Print Network [OSTI]

    These video lessons are presented by Tim Delworth, the coordinator of MA 15400. Quick Reference Guide to Campus Emergencies; Tutoring; POET (Pursuit of ...

  16. MA 56200

    E-Print Network [OSTI]

    Instructor Info. MA 56200 001 - ME 2053 TR 10:30am - Mcreynolds, David (MATH 704). Important Notes: ADA policies: please see our ADA Information page for ...

  17. MA 36200

    E-Print Network [OSTI]

    MA 36200, Spring 2015. Topics In Vector Calculus ... ADA policies: please see our ADA Information page for more details. In the event of a missed exam, see ...

  18. TiN Coatings on Fuel Cladding Tube 

    E-Print Network [OSTI]

    Yu, Zhichao 1987-

    2012-05-04T23:59:59.000Z

    demonstrate this new design and deposite TiN on the tubes. A systematic physical property study including surface characterization (SEM), mechanical testing (hardness and scratch test), thermal cycle test and thermal conductivity measurements, was conducted...

  19. Low-Energy Electron Microscopy Studies of Interlayer Mass Transport Kinetics on TiN(111)

    E-Print Network [OSTI]

    Israeli, Navot

    Low-Energy Electron Microscopy Studies of Interlayer Mass Transport Kinetics on TiN(111) S annealing of three-dimensional (3D) TiN(111) mounds, consisting of stacked 2D islands, at temperatures-limited decay of 2D TiN islands on atomically-flat TiN(111) terraces [Phys. Rev. Lett. 89 (2002) 176102

  20. MA Doping Analysis on Breeding Capability and Protected Plutonium Production of Large FBR

    SciTech Connect (OSTI)

    Permana, Sidik; Suzuki, Mitsutoshi; Kuno, Yusuke [Japan Atomic Energy Agency, Nuclear Non-proliferation Science and Technology Center, 2-4 Shirane Shirakata, Tokai-mura, Ibaraki, 319-1195 (Japan)

    2010-06-22T23:59:59.000Z

    Spent fuel from LWR can be seen as long-live waste if it is not recycled or as a 'new fuel' resource if it is recycled into the reactors. Uranium and plutonium have been used for 'new fuel' resources from LWR spent fuel as MOX fuel type which is loaded into thermal reactor or fast reactor types. Other actinides from the spent fuel such as neptunium, americium and curium as minor actinide (MA) are considered to be loaded into the reactors for specific purposes, recently. Those purposes such as for increasing protected plutonium production and breeding capability for protected plutonium as well as in the same time those amount of MA can be reduced to a small quantity as a burner or transmutation purpose. Some investigations and scientific approaches are performed in order to increase a material ''barrier'' in plutonium isotope composition by increasing the even mass number of plutonium isotope such as Pu-238, Pu-240 and Pu-242 as plutonium protected composition. Higher material barrier which related to intrinsic properties of plutonium isotopes with even mass number (Pu-238, Pu-240 and Pu-242), are recognized because of their intense decay heat (DH) and high spontaneous fission neutron (SFN) rates. Those even number mass of plutonium isotope contribute to some criteria of plutonium characterization which will be adopted for present study such as IAEA, Pellaud and Kessler criteria (IAEA, 1972; Pellaud, 2002; and Kessler, 2007). The present paper intends to evaluate the breeding capability as a fuel sustainability index of the reactors and to analyze the composition of protected plutonium production of large power reactor based on the FaCT FBR as reference (Ohki, et al., 2008). Three dimensional FBR core configuration has been adopted which is based on the core optimization calculation of SRAC-CITATION code as reactor core analysis and JENDL-3.3 is adopted for nuclear data library. Some MA doping materials are loaded into the blanket regions which can be considered as breeding region for protected plutonium production. Breeding capability of the reactor can be increased effectively by increasing MA doping rate while criticality condition of the reactor is reduced by doping MA. Adopting MA cycle is also effective to increase the isotopic Pu-238 production in plutonium vector composition for denaturing purpose of plutonium.

  1. Interface and Size Effects on TiN-based Nanostructured Thin Films 

    E-Print Network [OSTI]

    Kim, Ickchan

    2012-07-16T23:59:59.000Z

    reactors. In order to enhance the material property, superlattices is one of artificially engineered protective coatings, such as AlN/TiN and TaN/TiN multilayered films. Epitaxial cubic multilayer films, TaN/TiN and AlN/TiN nanolayers were grown on Si(001...

  2. On Larkin-Imry-Ma State of 3 He-A in Aerogel

    E-Print Network [OSTI]

    G. E. Volovik

    Superfluid 3 He-A shares the properties of spin nematic and chiral orbital ferromagnet. Its order parameter is characterized by two vectors ˆ d and ˆ l. This doubly anisotropic superfluid, when it is confined in aerogel, represents the most interesting example of a system with continuous symmetry in the presence of random anisotropy disorder. We discuss the Larkin-Imry-Ma state, which is characterized by the short-range orientational order of the vector ˆ l, while the long-range orientational order is destroyed by the collective action of the randomly oriented aerogel strings. On the other hand, sufficiently large regular anisotropy produced either by the deformation of the aerogel or by applied superflow destroys the Larkin-Imry-Ma effect leading to the uniform orientation of the vector ˆ l. This interplay of regular and random anisotropy allows us to study many different effects. PACS numbers: 61.30.-v, 67.57.-z, 75.10.Nr. 1.

  3. On Larkin-Imry-Ma State of 3He-A in Aerogel

    E-Print Network [OSTI]

    Volovik, G E

    2007-01-01T23:59:59.000Z

    Superfluid 3He-A shares the properties of spin nematic and chiral orbital ferromagnet. Its order parameter is characterized by two vectors d and l. This doubly anisotropic superfluid, when it is confined in aerogel, represents the most interesting example of a system with continuous symmetry in the presence of random anisotropy disorder. We discuss the Larkin-Imry-Ma state, which is characterized by the short-range orientational order of the vector l, while the long-range orientational order is destroyed by the collective action of the randomly oriented aerogel strings. On the other hand, sufficiently large regular anisotropy produced either by the deformation of the aerogel or by applied superflow destroys the Larkin-Imry-Ma effect leading to the uniform orientation of the vector l. This interplay of regular and random anisotropy allows us to study many different effects.

  4. On Larkin-Imry-Ma State of 3He-A in Aerogel

    E-Print Network [OSTI]

    G. E. Volovik

    2007-10-02T23:59:59.000Z

    Superfluid 3He-A shares the properties of spin nematic and chiral orbital ferromagnet. Its order parameter is characterized by two vectors d and l. This doubly anisotropic superfluid, when it is confined in aerogel, represents the most interesting example of a system with continuous symmetry in the presence of random anisotropy disorder. We discuss the Larkin-Imry-Ma state, which is characterized by the short-range orientational order of the vector l, while the long-range orientational order is destroyed by the collective action of the randomly oriented aerogel strings. On the other hand, sufficiently large regular anisotropy produced either by the deformation of the aerogel or by applied superflow suppresses the Larkin-Imry-Ma effect leading to the uniform orientation of the vector l. This interplay of regular and random anisotropy allows us to study many different effects.

  5. Size-Dependent Detachment-Limited Decay Kinetics of Two-Dimensional TiN Islands on TiN(111)

    E-Print Network [OSTI]

    Gall, Daniel

    Size-Dependent Detachment-Limited Decay Kinetics of Two-Dimensional TiN Islands on TiN(111) S kinetics of two-dimensional TiN adatom and vacancy islands on atomically smooth TiN(111) terraces. We numbers: 68.35.Md, 68.35.Fx, 68.37.Ef, 82.45.Mp B1-NaCl structure TiN is widely used as a hard wear

  6. Importance of Diffusion in Methanol Photochemistry on TiO2(110...

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

    Importance of Diffusion in Methanol Photochemistry on TiO2(110). Importance of Diffusion in Methanol Photochemistry on TiO2(110). Abstract: The photoactivity of methanol on the...

  7. Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl...

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

    Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl Substituents on Reactivity and Selectivity. Alcohol Chemistry on Rutile TiO2(110): The Influence of Alkyl Substituents...

  8. MA 261

    E-Print Network [OSTI]

    MA 261. Final Exam December 19, 2003. All INSTRUCTORS. 1:00 p. m. — 3:00 pm. LAMBERT FLDHS. Page 2. 3&4. .>ua 50.3.0 - m?ziu?w 2508: a 29:38.03 88.

  9. Intrinsic Diffusion of Hydrogen on Rutile TiO2(110). | EMSL

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

    Diffusion of Hydrogen on Rutile TiO2(110). Intrinsic Diffusion of Hydrogen on Rutile TiO2(110). Abstract: The combined experimental and theoretical study of intrinsic hydrogen...

  10. Adsorption States and Mobility of TMAA Molecules on Reduced TiO2...

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

    States and Mobility of TMAA Molecules on Reduced TiO2(110) Surface. Adsorption States and Mobility of TMAA Molecules on Reduced TiO2(110) Surface. Abstract: Combined scanning...

  11. Hydrogen Reactivity on Highly-hydroxylated TiO2(110) Surfaces...

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

    Reactivity on Highly-hydroxylated TiO2(110) Surfaces Prepared via Carboxylic Acid Adsorption and Photolysis. Hydrogen Reactivity on Highly-hydroxylated TiO2(110) Surfaces Prepared...

  12. Adsorption geometry of CO versus coverage on TiO2(110) from s...

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

    of CO versus coverage on TiO2(110) from s- and p-polarized infrared spectroscopy. Adsorption geometry of CO versus coverage on TiO2(110) from s- and p-polarized infrared...

  13. Imaging Adsorbate O-H Bond Cleavage: Methanol on TiO2(110). ...

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

    O-H Bond Cleavage: Methanol on TiO2(110). Abstract: We investigated methanol adsorption and dissociation on bridge-bonded oxygen vacancies of TiO2(110) (1×1) surface...

  14. Structure and Dynamics of CO2 on Rutile TiO2(110)-1×1....

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

    Structure and Dynamics of CO2 on Rutile TiO2(110)-1×1. Abstract: Adsorption, binding, and diffusion of CO2 molecules on rutile TiO2(110) model surfaces was...

  15. Water Interactions with Terminal Hydroxyls on TiO2 (110). | EMSL

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

    Interactions with Terminal Hydroxyls on TiO2 (110). Water Interactions with Terminal Hydroxyls on TiO2 (110). Abstract: A combination of scanning tunneling microscopy and density...

  16. Acetone and Water on TiO (110): Competition for Sites. | EMSL

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

    TiO (110): Competition for Sites. Acetone and Water on TiO (110): Competition for Sites. Abstract: The competitive interaction between acetone and water for surface sites on...

  17. Surface Chemistry of 2-Propanol on TiO2(110): Low and High Temperature...

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

    Chemistry of 2-Propanol on TiO2(110): Low and High Temperature Dehydration, Isotope Effects, and Influence of Local Surface Chemistry of 2-Propanol on TiO2(110): Low and High...

  18. 2-Propanol Dehydration on TiO2(110): The Effect of Bridge-Bonded...

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

    2-Propanol Dehydration on TiO2(110): The Effect of Bridge-Bonded Oxygen Vacancy Blocking. 2-Propanol Dehydration on TiO2(110): The Effect of Bridge-Bonded Oxygen Vacancy Blocking....

  19. Acetone-Assisted Oxygen Vacancy Diffusion on TiO2(110). | EMSL

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

    Acetone-Assisted Oxygen Vacancy Diffusion on TiO2(110). Acetone-Assisted Oxygen Vacancy Diffusion on TiO2(110). Abstract: We have studied the dynamic relationship between acetone...

  20. First-principles calculations of step formation energies and step interactions on TiN(001)

    E-Print Network [OSTI]

    Ciobanu, Cristian

    First-principles calculations of step formation energies and step interactions on TiN(001) Cristian the formation energies and repulsive interactions of monatomic steps on the TiN(001) surface, using den- sity studies on different aspects related to thin film growth on TiN surfaces, few atomistic studies have been

  1. Methylene Bromide Chemistry and Photochemistry on Rutile TiO2...

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

    such as CD2Br2 on TiO2 likely occurs via indirect processes (such as OH radical attack) as opposed to direct mechanisms involving charge carriers generated in TiO2 by...

  2. Hydrogen adsorption on Pd/TiFe (110) surface S.E. Kulkovaa

    E-Print Network [OSTI]

    Kim, Jai Sam

    Hydrogen adsorption on Pd/TiFe (110) surface S.E. Kulkovaa , S.V. Eremeeva,b,*, V.E. Egorushkinc February 2003 by E.L. Ivchenko Abstract Adsorption of hydrogen on the TiFe (110) surface covered the local density approximation. Influence of palladium coating to adsorption properties of the TiFe (110

  3. Mechanical properties of nanocrystalline and epitaxial TiN films on (100) silicon

    E-Print Network [OSTI]

    Wei, Qiuming

    Mechanical properties of nanocrystalline and epitaxial TiN films on (100) silicon H. Wang, A 2001) We investigated mechanical properties of TiN as a function of microstructure varying from nanocrystalline to single crystal TiN films deposited on (100) silicon substrates. By varying the substrate

  4. Self-Organized Amorphous TiO2 Nanotube Arrays on Porous Ti Foam for Rechargeable Lithium and Sodium Ion Batteries

    SciTech Connect (OSTI)

    Bi, Zhonghe [ORNL; Paranthaman, Mariappan Parans [ORNL; Menchhofer, Paul A [ORNL; Dehoff, Ryan R [ORNL; Bridges, Craig A [ORNL; Chi, Miaofang [ORNL; Guo, Bingkun [ORNL; Sun, Xiao-Guang [ORNL; Dai, Sheng [ORNL

    2013-01-01T23:59:59.000Z

    Self-organized amorphous TiO2 nanotube arrays (NTAs) were successfully fabricated on both Ti foil and porous Ti foam through electrochemical anodization techniques. The starting Ti foams were fabricated using ARCAM s Electron Beam Melting (EBM) technology. The TiO2 NTAs on Ti foam were used as anodes in lithium ion batteries; they exhibited high capacities of 103 Ahcm-2 at 10 Acm-2 and 83 Ahcm-2 at 500 Acm-2, which are two to three times higher than those achieved on the standard Ti foil, which is around 40 Ahcm-2 at 10 Acm-2 and 24 Ahcm-2 at 500 Acm-2, respectively. This improvement is mainly attributed to higher surface area of the Ti foam and higher porosity of the nanotube arrays layer grown on the Ti foam. In addition, a Na-ion half-cell composed of these NTAs anodes and Na metal showed a self-improving specific capacity upon cycling at 10 Acm-2. These results indicate that TiO2 NTAs grown on Ti porous foam are promising electrodes for Li-ion or Na-ion rechargeable batteries.

  5. Ordered Array of Gold Semishells on TiO2 Spheres: An Ultrasensitive and Recyclable SERS Substrate

    E-Print Network [OSTI]

    Xiong, Qihua

    more semiconductor-noble metal nanocomposites were fabricated, such as TiO2/Ag, ZnO/Ag, ZnO/Au, TiO2/AuOrdered Array of Gold Semishells on TiO2 Spheres: An Ultrasensitive and Recyclable SERS Substrate, 639798, Singapore ABSTRACT: Ordered array of Au semishells on TiO2 spheres with controlled size

  6. Effect of Ti concentration on the structure and texture of SiTiOC glasses

    SciTech Connect (OSTI)

    Tellez, L. [Dpt. Ing. Metalurgica. ESIQIE-Instituto Politecnico Nacional. Zacatenco, 07738 Mexico D.F. (Mexico); Rubio, J. [Instituto de Ceramica y Vidrio. C.S.I.C. Campus de la Universidad Autonoma de Madrid, Canto Blanco 28049, Madrid (Spain); Valenzuela, M.A., E-mail: mavalenz@ipn.mx [Lab. Catalisis y Materiales, ESIQIE-Instituto Politecnico Nacional. Zacatenco, 07738 Mexico D.F. (Mexico); Rubio, F.; Oteo, J.L. [Instituto de Ceramica y Vidrio. C.S.I.C. Campus de la Universidad Autonoma de Madrid, Canto Blanco 28049, Madrid (Spain)

    2009-06-15T23:59:59.000Z

    Five different silicon-titanium organic-inorganic hybrid materials were prepared by the reaction of tetraethoxysilane, titanium tetrabutoxide and silanol-terminated polydimethylsiloxane. Si-Ti oxycarbide glasses were prepared by pyrolysis of the hybrid materials in nitrogen atmosphere in the range of 400 to 1500 deg. C. The obtained Si-Ti oxycarbide materials were characterized by Fourier Transform-Infra Red spectroscopy, X-ray-diffraction, mercury porosimetry and SEM. The study indicated that the reactivity towards water increases up to 1000 deg. C, at higher temperatures it decreases for all samples. During the pyrolysis, Ti atoms were incorporated into the silicate network leading to the formation of Si-Ti oxycarbide glasses, except with sample containing 7% of Ti which presented also the formation of {beta}-SiC and TiC crystalline phases. The porosity was increased up to 600 deg. C and then decreased tending to disappear at 1500 deg. C. When the titanium concentration increased from 1 to 3% in the oxycarbide glass, the porosity decreased; for higher concentration, an increase in the porosity was observed.

  7. Ferroelectric and ferromagnetic properties in BaTiO{sub 3} thin films on Si (100)

    SciTech Connect (OSTI)

    Singamaneni, Srinivasa Rao, E-mail: ssingam@ncsu.edu; Prater, John T. [Materials Science Division, Army Research Office, Research Triangle Park, North Carolina 27709 (United States); Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States); Punugupati, Sandhyarani; Hunte, Frank; Narayan, Jagdish [Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina 27695 (United States)

    2014-09-07T23:59:59.000Z

    In this paper, we report on the epitaxial integration of room temperature lead-free ferroelectric BaTiO{sub 3} thin (?1050?nm) films on Si (100) substrates by pulsed laser deposition technique through a domain matching epitaxy paradigm. We employed MgO and TiN as buffer layers to create BaTiO{sub 3}/SrRuO{sub 3}/MgO/TiN/Si (100) heterostructures. C-axis oriented and cube-on-cube epitaxial BaTiO{sub 3} is formed on Si (100) as evidenced by the in-plane and out-of-plane x-ray diffraction, and transmission electron microscopy. X-ray photoemission spectroscopic measurements show that Ti is in 4(+) state. Polarization hysteresis measurements together with Raman spectroscopy and temperature-dependent x-ray diffraction confirm the room temperature ferroelectric nature of BaTiO{sub 3}. Furthermore, laser irradiation of BaTiO{sub 3} thin film is found to induce ferromagnetic-like behavior but affects adversely the ferroelectric characteristics. Laser irradiation induced ferromagnetic properties seem to originate from the creation of oxygen vacancies, whereas the pristine BaTiO{sub 3} shows diamagnetic behavior, as expected. This work has opened up the route for the integration of room temperature lead-free ferroelectric functional oxides on a silicon platform.

  8. Interaction of CO2 with Oxygen Adatoms on Rutile TiO2(110). ...

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

    CO2 with Oxygen Adatoms on Rutile TiO2(110). Interaction of CO2 with Oxygen Adatoms on Rutile TiO2(110). Abstract: The interactions of CO2 with oxygen adatoms (Oa’s) on...

  9. Conversion of 1,2-Propylene Glycol on Rutile TiO2(110). | EMSL

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

    Conversion of 1,2-Propylene Glycol on Rutile TiO2(110). Conversion of 1,2-Propylene Glycol on Rutile TiO2(110). Abstract: We have studied the reactions of 1,2-propylene glycol...

  10. The effect of TiCl4-treated TiO2 compact layer on the performance of dye-sensitized solar cell

    E-Print Network [OSTI]

    Park, Byungwoo

    The effect of TiCl4-treated TiO2 compact layer on the performance of dye-sensitized solar cell by a factor of five compared with the bare cell. Ã? 2011 Elsevier B.V. All rights reserved. 1. Introduction Dye-sensitized: Received 11 October 2011 Accepted 25 October 2011 Available online 4 November 2011 Keywords: Dye-sensitized

  11. Growth and Properties of (001)-oriented Pb(Zr?.??Ti?.??)O?/LaNiO? Films on Si(001) Substrates with TiN Buffer Layers

    E-Print Network [OSTI]

    Zhu, Tie-Jun

    Pulsed laser deposition has been used to grow Pb(Zr?.??Ti?.??)O? (PZT)/LaNiO? (LNO) heterostructures with restricted crystallographic orientations on bare Si(001) and SiO?-coated Si(001) substrates, using TiN buffer layers. ...

  12. Effect of aspect ratios of in situ formed TiB whiskers on the mechanical properties of TiBw/Ti6Al4V composites

    E-Print Network [OSTI]

    Hong, Soon Hyung

    ; In situ formed TiB whiskers; Spark plasma sintering Titanium alloys have been noted as promising high by a spark plasma sintering (SPS) process, which is highly useful when seeking to control the aniso- tropic) were synthesized through an in situ reac- tion between TiB2 and Ti­6Al­4V powders during a spark plasma

  13. TiN-Coating Effects on Stainless Steel Tribological Behavior Under Dry and Lubricated Conditions

    E-Print Network [OSTI]

    Volinsky, Alex A.

    properties of magnetron sputtered titanium nitride coating on 316L steel, sliding against Si3N4 ceramic ball microscopy and energy dispersive spectroscopy. TiN coatings and 316L stainless steel had better tribological, titanium nitride coating 1. Introduction Titanium nitride (TiN) coatings deposited by physical vapor

  14. MA 16200

    E-Print Network [OSTI]

    See the online course evaluation page for more information on how we collect course feedback from students. Department of Mathematics, Purdue University

  15. MA 16200

    E-Print Network [OSTI]

    ADA policies: please see our ADA Information page for more details. ... See the online course evaluation page for more information on how we collect course ...

  16. Low-Temperature Desorption of N2O from NO on Rutile TiO2(110...

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

    Desorption of N2O from NO on Rutile TiO2(110)-1x1. Low-Temperature Desorption of N2O from NO on Rutile TiO2(110)-1x1. Abstract: We find that NO dosed on rutile TiO2(110)-1×1...

  17. Ma Philippine

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not Found Item Not Found TheHot electron dynamics in807 DE899 06 Revision 0U7114- .

  18. MA.2

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling CorpNewCF INDUSTRIES,L? .-I I2 m.m\Ll 1vr*M OM'

  19. Measurement of neutron capture on 50Ti at thermonuclear energies

    E-Print Network [OSTI]

    P. V. Sedyshev; P. Mohr; H. Beer; H. Oberhummer; Yu. P. Popov; W. Rochow

    1999-07-28T23:59:59.000Z

    At the Karlsruhe and Tuebingen 3.75 MV Van de Graaff accelerators the thermonuclear 50Ti(n,gamma)51Ti(5.8 min) cross section was measured by the fast cyclic activation technique via the 320.852 and 928.65 keV gamma-ray lines of the 51Ti-decay. Metallic Ti samples of natural isotopic composition and samples of TiO2 enriched in 50Ti by 67.53 % were irradiated between two gold foils which served as capture standards. The capture cross-section was measured at the neutron energies 25, 30, 52, and 145 keV, respectively. The direct capture cross section was determined to be 0.387 +/- 0.011 mbarn at 30 keV. We found evidence for a bound state s-wave resonance with an estimated radiative width of 0.34 eV which destructively interfers with direct capture. The strength of a suggested s-wave resonance at 146.8 keV was determined. The present data served to calculate, in addition to the directly measured Maxwellian averaged capture cross sections at 25 and 52 keV, an improved stellar 50Ti(n,gamma)51Ti rate in the thermonuclear energy region from 1 to 250 keV. The new stellar rate leads at low temperatures to much higher values than the previously recommended rate, e.g., at kT=8 keV the increase amounts to about 50 %. The new reaction rate therefore reduces the abundance of 50Ti due to s-processing in AGB stars.

  20. Efficiency of clay-TiO2 nanocomposites on the photocatalytic elimination of a model hydrophobic air pollutant

    E-Print Network [OSTI]

    Kibanova, Daria

    2010-01-01T23:59:59.000Z

    Paris - Chemistry 2000, 3, 405-411. Clay-TiO 2 nanocompositenanocomposites Appl. Clay Sci. 2006, (28) Ooka, C. ;of TiO 2 -pillared clay on adsorption and photocatalysis of

  1. Tammy Ma

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del SolStrengthening a solidSynthesis of 2D AlloysTrails Taking Care

  2. MA15900 Expectations/Suggestions

    E-Print Network [OSTI]

    odavis

    2011-08-21T23:59:59.000Z

    WEB PAGE: …math.purdue.edu/MA15900 or go to www.math.purdue.edu and then click on ... wide and an inch deep. Be careful about assuming you already.

  3. MA15900 Expectations/Suggestions

    E-Print Network [OSTI]

    Owen Davis

    2008-08-29T23:59:59.000Z

    WEB PAGE: …math.purdue.edu/MA 15900 or go to www.math.purdue.edu and ... are available on the respective course web pages.) ... wide and an inch deep.

  4. Pathways of atomistic processes on TiN,,001... and ,,111... surfaces during film growth: an ab initio study

    E-Print Network [OSTI]

    Gall, Daniel

    Pathways of atomistic processes on TiN,,001... and ,,111... surfaces during film growth: an ab used to calculate binding and diffusion energies of adatoms, molecules, and small clusters on TiN 001 and TiN 111 surfaces in order to isolate the key atomistic processes which determine texture evolution

  5. Ohmic contact formation on n-type Ge by direct deposition of TiN

    SciTech Connect (OSTI)

    Iyota, Masatoshi; Yamamoto, Keisuke [Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580 (Japan); Wang, Dong; Yang, Haigui; Nakashima, Hiroshi [Art, Science and Technology Center for Cooperative Research, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580 (Japan)

    2011-05-09T23:59:59.000Z

    We succeeded in Ohmic contact formation on an n-Ge substrate by direct sputter deposition from a TiN target and subsequent postmetallization annealing (PMA) at 350 deg. C. The Schottky barrier heights of the TiN/n-Ge and TiN/p-Ge contacts were 0.18 eV and 0.50 eV, respectively, and were maintained up to a PMA temperature of 550 deg. C. These electrical characteristics are likely to be associated with an approximately 1-nm-thick interlayer formed at a TiN/Ge interface, which leads to the alleviation of the Fermi level pinning. We demonstrated the validity of the TiN/n-Ge contact using an n{sup +}/p junction, which showed an excellent ideal factor of n=1.01.

  6. Effect of Welding Speed and Defocusing Distance on the Quality of Laser Welded Ti-6Al-4V

    E-Print Network [OSTI]

    Medraj, Mamoun

    Effect of Welding Speed and Defocusing Distance on the Quality of Laser Welded Ti-6Al-4V A:YAG laser, Laser welding, Ti-6Al-4V alloy Abstract In this study, the weldability of 5.1-mm thick Ti-6Al-4V at various welding speeds and defocusing distances. The joint quality was characterized in terms of weld

  7. MA 37500, Summer 2015

    E-Print Network [OSTI]

    MA 37500, Summer 2015. Introduction To Discrete Mathematics ... Course Materials. Textbook: Discrete Mathematics and Its Applications (7), Kenneth Rosen ...

  8. Effects of aging on the characteristics of TiNiPd shape memory alloy thin films

    SciTech Connect (OSTI)

    Zhang Congchun [Key Laboratory for Thin Film and Micro-fabrication Technology of Ministry of Education, Research Institute of Micro/Nanometer Science and Technology (China)], E-mail: zhcc@mail.sjtu.edu.cn; Yang Chunsheng; Ding Guifu [Key Laboratory for Thin Film and Micro-fabrication Technology of Ministry of Education, Research Institute of Micro/Nanometer Science and Technology (China); Wu Jiansheng [School of Material Science and Engineering, Shanghai Jiaotong University, 200030, Shanghai (China)

    2008-07-15T23:59:59.000Z

    TiNiPd thin films have been deposited on glass substrate using R.F. magnetron sputtering. Effects of annealing and aging on the microstructure, phase transformation behaviors and shape memory effects of these thin films have been studied by X-ray diffractometry, differential scanning calorimeter, tensile tests and internal friction characteristics. The TiNiPd thin films annealed at 750 deg. C exhibit uniform martensite/austenite transformations and shape memory effect. Aging at 450 deg. C for 1 h improved the uniformity of transformations and shape memory effect. Long time aging decreased transformation temperatures and increased the brittleness of TiNiPd thin films.

  9. Hole-mediated Photodecomposition of Trimehtyl Acetate on a TiO2...

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

    Acetate on a TiO2(001) Anatase Epitaxial Thin Film Surface. Abstract: Surfaces of titanium dioxide in both rutile and anatase polymorphs have attracted significant attention in...

  10. Effect of prior cold work on age hardening of Cu-3Ti-1Cr alloy

    SciTech Connect (OSTI)

    Markandeya, R. [Department of Metallurgical Engineering, College of Engineering, Jawaharlal Nehru Technological University, Kukatpally, Hyderabad-500 072 (India); Nagarjuna, S. [Defence Metallurgical Research Laboratory, Kanchanbagh, Hyderabad-500 058 (India)]. E-mail: snagarjuna1@rediffmail.com; Sarma, D.S. [Department of Metallurgical Engineering, Institute of Technology, Banaras Hindu University, Varanasi-221 005 (India)

    2006-12-15T23:59:59.000Z

    The influence of 50%, 75% and 90% cold work on the age hardening behavior of Cu-3Ti-1Cr alloy has been investigated by hardness and tensile tests, and light optical and transmission electron microscopy. Hardness increased from 118 Hv in the solution-treated condition to 373 Hv after 90% cold work and peak aging. Cold deformation reduced the peak aging time and temperature of the alloy. The yield strength and ultimate tensile strength reached a maximum of 1090 and 1110 MPa, respectively, following 90% deformation and peak aging. The microstructure of the deformed alloy exhibited elongated grains and deformation twins. The maximum strength on peak aging was obtained due to precipitation of the ordered, metastable and coherent {beta}'-Cu{sub 4}Ti phase, in addition to high dislocation density and deformation twins. Over-aging resulted in decreases in hardness and strength due to the formation of incoherent and equilibrium {beta}-Cu{sub 3}Ti phase in the form of a cellular structure. However, the morphology of the discontinuous precipitation changed to a globular form on high deformation. The mechanical properties of Cu-3Ti-1Cr alloy are superior to those of Cu-2.7Ti, Cu-3Ti-1Cd and the commercial Cu-0.5Be-2.5Co alloys in the cold-worked and peak-aged condition.

  11. MA 154 FORMULA SHEET

    E-Print Network [OSTI]

    delworth

    2006-01-07T23:59:59.000Z

    8/02. MA 154 FORMULA SHEET. ADDITION AND SUBTRACTION FORMULAS sin(u + v) = sinucosv + cosusinv sin(u? v) = sinucosv ? cosusinv cos(u + v) ...

  12. MA 15400 FORMULA SHEET

    E-Print Network [OSTI]

    User

    2011-11-07T23:59:59.000Z

    11/11. MA 15400 FORMULA SHEET. ADDITION AND SUBTRACTION FORMULAS sin(u + v) = sinucosv + cosusinv sin(u? v) = sinucosv ? cosusinv cos(

  13. Materials for MA 182.

    E-Print Network [OSTI]

    Materials for MA 182. INSTRUCTOR: Richard Penney. Office: MATH 822: Telephone: 494-1968: e-mail: rcp@math.purdue.edu: Office Hours: Mon, Tu, Fri,

  14. MA 161 Page

    E-Print Network [OSTI]

    FINAL EXAM - December 12, Monday, 10:20am-12:20pm (Lambert Fieldhouse). Exam Locations and Seating Chart · MA 161 Final Exam Practice Problems ...

  15. MA 162 Page

    E-Print Network [OSTI]

    MA 162 FINAL EXAM - Wednesday, December 12 (3:30pm - 5:30pm). Seating Chart (LAMBERT FIELDHOUSE) · Exam #1 - STUDY GUIDE · Exam #2 - STUDY

  16. MA transmutation performance in the optimized MYRRHA

    SciTech Connect (OSTI)

    Malambu, E.; Van den Eynde, G.; Fernandez, R.; Baeten, P.; Ait Abderrahim, H. [SCK-CEN, Boeretang 200, BE-2400 Mol (Belgium)

    2013-07-01T23:59:59.000Z

    MYRRHA (multi-purpose hybrid research reactor for high-tech applications) is a multipurpose research facility currently being developed at SCK-CEN. It will be able to work in both critical and subcritical modes and, cooled by lead-bismuth eutectic. In this paper the minor actinides (MA) transmutation capabilities of MYRRHA are investigated. (Pu + Am, U) MOX fuel and (Np + Am + Cm, Pu) Inert Matrix Fuel test samples have been loaded in the central channel of the MYRRHA critical core and have been irradiated during five cycles, each one consisting of 90 days of operation at 100 MWth and 30 days of shutdown. The reactivity worth of the test fuel assembly was about 1.1 dollar. A wide range of burn-up level has been achieved, extending from 42 to 110 MWd/kg HM, the samples with lower MA-to-Pu ratios reaching the highest burn-up. This study has highlighted the importance of the initial MA content, expressed in terms of MA/Pu ratio, on the transmutation rate of MA elements. For (Pu + Am, U) MOX fuel samples, a net build-up of MA is observed when the initial content of MA is very low (here, 1.77 wt% MA/Pu) while a net decrease in MA is observed in the sample with an initial content of 5 wt%. This suggests the existence of some 'equilibrium' initial MA content value beyond which a net transmutation is achievable.

  17. Efficiency of clay-TiO2 nanocomposites on the photocatalytic elimination of a model hydrophobic air pollutant

    E-Print Network [OSTI]

    Kibanova, Daria

    2010-01-01T23:59:59.000Z

    of semiconductor photocatalysis Chem. Rev. 1995, 95, 69-effluents by TiO 2 photocatalysis Catalysis Today 2000, 63,clay on adsorption and photocatalysis of gaseous molecules

  18. Influence of Atomic Layer Deposition Temperatures on TiO2/n-Si MOS Capacitor

    SciTech Connect (OSTI)

    Wei, Daming [Kansas State University; Hossain, T [Kansas State University; Garces, N. Y. [Naval Research Laboratory, Washington, D.C.; Nepal, N. [Naval Research Laboratory, Washington, D.C.; Meyer III, Harry M [ORNL; Kirkham, Melanie J [ORNL; Eddy, C.R., Jr. [Naval Research Laboratory, Washington, D.C.; Edgar, J H [Kansas State University

    2013-01-01T23:59:59.000Z

    This paper reports on the influence of temperature on the structure, composition, and electrical properties of TiO2 thin films deposited on n-type silicon (100) by atomic layer deposition (ALD). TiO2 layers around 20nm thick, deposited at temperatures ranging from 100 to 300 C, were studied. Samples deposited at 250 C and 200 C had the most uniform coverage as determined by atomic force microscopy. The average carbon concentration throughout the oxide layer and at the TiO2/Si interface was lowest at 200 C. Metal oxide semiconductor capacitors (MOSCAPs) were fabricated, and profiled by capacitance-voltage techniques. Negligible hysteresis was observed from a capacitance-voltage plot and the capacitance in the accumulation region was constant for the sample prepared at a 200 C ALD growth temperature. The interface trap density was on the order of 1013 eV-1cm-2 regardless of the deposition temperature.

  19. Patterned Growth of TiO2 Nanowires on Titanium Substrates Jong-Yoon Ha1;2

    E-Print Network [OSTI]

    Lin, Liwei

    with the (001) and (110) side facets. This facile approach to TiO2 NW fabrication with fast induction heating for application in catalysis,1) optical devices,2) gas and humidity sensors,3,4) solar cells,5) Li-ion batteries,6-catalyst VLS method in an inductively heated reactor to synthesize TiO2 NWs on a Ti foil substrate patterned

  20. Active Oxygen on Au/TiO2 Catalysts DOI: 10.1002/anie.201102062 Active oxygen on a Au/TiO2 catalyst Formation, stability and CO

    E-Print Network [OSTI]

    Pfeifer, Holger

    1 Active Oxygen on Au/TiO2 Catalysts DOI: 10.1002/anie.201102062 Active oxygen on a Au/TiO2 are the activation of molecular oxygen, the active site for this reaction step, and the nature of the catalytically active oxygen species present under working conditions.[3;9-15] Stiehl et al. had shown that molecularly

  1. Effect of Reactive Sputtering Parameters on TiAlN Nanocoating Structure and Morphology

    SciTech Connect (OSTI)

    Budi, Esmar [Jurusan Fisika FMIPA Universitas Negeri Jakarta Jl. Pemuda No. 10 Rawamangun Jakarta 13220 (Indonesia); Razali, M. Mohd.; Nizam, A. R. Md. [Faculty of Manufacturing Engineering Universiti Teknikal Malaysia Melaka (UTeM) Karung Berkunci No 1752 Pejabat Pos Durian Tunggal 76109 Melaka (Malaysia)

    2010-10-24T23:59:59.000Z

    The effect of substrate bias and nitrogen flow rate on the TiAlN nanocoating structure and morphology has been investigated by using reactive unbalance DC magnetron sputtering. TiAlN nanocoating was deposited on the tungsten carbide insert tool and the structure and morphology were characterized by using XRD and AFM, respectively. The substrate bias was varied between 0 to -221 V and the nitrogen flow rate was varied between 30 to 72 sccm. The results showed that the structure of TiAlN nanocoating consisted of mainly (111) and (200) plane. The structure was significatly influenced by substrate bias in promoting finer crystal size and increased crystal plane spacing while the rms roughness of nanocoating was influenced by substrate bias and nitrogen flow rate.

  2. Femtosecond laser-induced periodic surface structure on the Ti-based nanolayered thin films

    SciTech Connect (OSTI)

    Petrovi?, Suzana M.; Gakovi?, B.; Peruško, D. [Institute of Nuclear Science—Vin?a, University of Belgrade, POB 522, 11001 Belgrade (Serbia)] [Institute of Nuclear Science—Vin?a, University of Belgrade, POB 522, 11001 Belgrade (Serbia); Stratakis, E. [Institute of Electronic Structure and Laser, Foundation for Research and Technology–Hellas, P.O. Box 1527, Gr-711 10 Heraklion (Greece) [Institute of Electronic Structure and Laser, Foundation for Research and Technology–Hellas, P.O. Box 1527, Gr-711 10 Heraklion (Greece); Department of Materials Science and Technology, University of Crete, 710 03 Heraklion, Crete (Greece); Bogdanovi?-Radovi?, I. [Ru?er Boškovi? Institute, P.O. Box 180, 10002 Zagreb (Croatia)] [Ru?er Boškovi? Institute, P.O. Box 180, 10002 Zagreb (Croatia); ?ekada, M. [Jožef Stefan Institute, Jamova 39, 1000 Ljubljana (Slovenia)] [Jožef Stefan Institute, Jamova 39, 1000 Ljubljana (Slovenia); Fotakis, C. [Institute of Electronic Structure and Laser, Foundation for Research and Technology–Hellas, P.O. Box 1527, Gr-711 10 Heraklion (Greece) [Institute of Electronic Structure and Laser, Foundation for Research and Technology–Hellas, P.O. Box 1527, Gr-711 10 Heraklion (Greece); Department of Physics, University of Crete, 714 09 Heraklion, Crete (Greece); Jelenkovi?, B. [Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade (Serbia)] [Institute of Physics, University of Belgrade, Pregrevica 118, 11080 Belgrade (Serbia)

    2013-12-21T23:59:59.000Z

    Laser-induced periodic surface structures (LIPSSs) and chemical composition changes of Ti-based nanolayered thin films (Al/Ti, Ni/Ti) after femtosecond (fs) laser pulses action were studied. Irradiation is performed using linearly polarized Ti:Sapphire fs laser pulses of 40 fs pulse duration and 800 nm wavelength. The low spatial frequency LIPSS (LSFL), oriented perpendicular to the laser polarization with periods slightly lower than the irradiation wavelength, was typically formed at elevated laser fluences. On the contrary, high spatial frequency LIPSS (HSFL) with uniform period of 155 nm, parallel to the laser light polarization, appeared at low laser fluences, as well as in the wings of the Gaussian laser beam distribution for higher used fluence. LSFL formation was associated with the material ablation process and accompanied by the intense formation of nanoparticles, especially in the Ni/Ti system. The composition changes at the surface of both multilayer systems in the LSFL area indicated the intermixing between layers and the substrate. Concentration and distribution of all constitutive elements in the irradiated area with formed HSFLs were almost unchanged.

  3. Superior Corrosion Resistance Properties of TiN-Based Coatings on Zircaloy Tubes in Supercritical Water

    SciTech Connect (OSTI)

    Fauzia Khatkhatay; Liang Jiao; Jie Jian; Zhijie Jiao; Hongbin Zhang; Jian Gan; Haiyan Wang; Wenrui Zhang; Xinghang Zhang

    2014-08-01T23:59:59.000Z

    Thin films of TiN and Ti0.35Al0.65N nanocomposite were deposited on polished Zircaloy-4 tubes. After exposure to supercritical water for 48 h, the coated tubes are remarkably intact, while the bare uncoated tube shows severe oxidation and breakaway corrosion. X-ray diffraction patterns, secondary electron images, backscattered electron images, and energy dispersive X-ray spectroscopy data from the tube surfaces and cross-sections show that a protective oxide, formed on the film surface, effectively prevents further oxidation and corrosion to the Zircaloy-4 tubes. This result demonstrates the effectiveness of thin film ceramics as protective coatings under extreme environments.

  4. MA 15400, Fall 2014, Final Exam Information The Final Exam is on ...

    E-Print Network [OSTI]

    math

    2014-12-09T23:59:59.000Z

    Dec 16, 2014 ... The Final Exam is on Tuesday, December 16th starting at 8:00 AM in Lambert Fieldhouse. Plan to arrive at least 10 minutes early so you can ...

  5. MA 166 FINAL EXAM Spring 2006 Page 1/11 NAME %OL'UT'ONS

    E-Print Network [OSTI]

    Fill in the above items in print. Also write your name at the top of pages 2—11. ' 3. ... (d) Using a #2 pencil, put your answers to questions 1—25 on your answer ...

  6. MA Course Catalogue

    E-Print Network [OSTI]

    514 - Numerical Analysis (CS 514) Iterative methods for solving nonlinear; ... Mathematics The course covers mathematics useful in analyzing computer algorithms. ... 527 - Advanced Mathematics For Engineers And Physicists I Courses MA ...

  7. In situ NiTi/Nb(Ti) composite

    SciTech Connect (OSTI)

    Jiang, Daqiang, E-mail: dq80jiang@126.com; Cui, Lishan; Jiang, Jiang; Zheng, Yanjun

    2013-12-15T23:59:59.000Z

    Graphical abstract: - Highlights: • In situ NiTi/Nb(Ti) composites were fabricated. • The transformation temperature was affected by the mixing Ti:Ni atomic ratios. • The NiTi component became micron-scale lamella after forging and rolling. • The composite exhibited high strength and high damping capacity. - Abstract: This paper reports on the creation of a series of in situ NiTi/Nb(Ti) composites with controllable transformation temperatures based on the pseudo-binary hypereutectic transformation of NiTi–Nb system. The composite constituent morphology was controlled by forging and rolling. It is found that the thickness of the NiTi lamella in the composite reached micron level after the hot-forging and cold-rolling. The NiTi/Nb(Ti) composite exhibited high damping capacity as well as high yield strength.

  8. Effect of Elastic Stress on Phase Separation in Fe-20%Cr-6%Al-0.5%Ti ODS alloy

    E-Print Network [OSTI]

    Cambridge, University of

    Effect of Elastic Stress on Phase Separation in Fe- 20%Cr-6%Al-0.5%Ti ODS alloy C. Capdevila1, M. K Aldazabal from CEIT; and Monica Campos from Carlos III University (UC3) for their help with ODS for nuclear applications Acknowledgements Effect of Elastic Stress on Phase Separation in Fe-Cr-Al-Ti ODS alloy by C

  9. Investigation of surface endothelialization on biomedical nitinol (NiTi) alloy: Effects of surface micropatterning combined

    E-Print Network [OSTI]

    Lee, James

    Investigation of surface endothelialization on biomedical nitinol (NiTi) alloy: Effects of surface and Aerospace Engineering, University of Missouri, Columbia, MO 65211, USA c Department of Physics and Astronomy alloy surfaces was systematically investigated. Our study focuses on elucidating the effects of surface

  10. Adsorption of Nucleic Acid Components on Rutile (TiO2) Surfaces

    E-Print Network [OSTI]

    Sverjensky, Dimitri A.

    Adsorption of Nucleic Acid Components on Rutile (TiO2) Surfaces H. James Cleaves II,1 Caroline M and horizontal gene transfer. The adsorption of mono-, oligo-, and polynucleotides and their components obtained from studies of other minerals. In contrast with recent studies of nucleotide adsorption on Zn

  11. Adsorption, Desorption, and Dissociation of Benzene on TiO2(110) and Pd/TiO2(110)

    SciTech Connect (OSTI)

    Zhou, Jing [ORNL; Dag, Sefa [ORNL; Senanayake, Sanjaya D [ORNL; Hathorn, Bryan C [ORNL; Kalinin, Sergei V [ORNL; Meunier, Vincent [ORNL; Mullins, David R [ORNL; Overbury, Steven {Steve} H [ORNL; Baddorf, Arthur P [ORNL

    2006-01-01T23:59:59.000Z

    Adsorption and reaction of benzene molecules on clean TiO{sub 2}(110) and on TiO{sub 2}(110) with deposited Pd nanoparticles are investigated using a combination of scanning tunneling microscopy (STM), temperature-programmed desorption, and first-principles calculations. Above {approx}50 K, the one-dimensional motion of benzene between bridging oxygen rows is shown to be too fast for STM imaging. At 40 K benzene molecules form chains on top of titanium rows, with calculations indicating every other benzene is rotated 30{sup o}. Both experimental and theoretical studies find no dissociative reactivity of benzene on the clean TiO{sub 2}(110) surface, due to little hybridization between TiO{sub 2} and benzene electronic states. After deposition of Pd nanoparticles, molecular benzene is observed with STM both on the substrate and adjacent to metallic particles. Upon heating to 800 K, benzene fully breaks down into its atomic constituents in a multistep decomposition process.

  12. MA250 Syllabus

    E-Print Network [OSTI]

    2015-01-13T23:59:59.000Z

    TI-30XS MultiView (or XB battery). Credit Hours: 2.00. Course Description: This course is designed to teach techniques for solving problems in probability theory

  13. Characterization and In-Situ Ion-Irradiation of MA957 ODS Steel Djamel Kaoumi1

    E-Print Network [OSTI]

    Motta, Arthur T.

    Characterization and In-Situ Ion-Irradiation of MA957 ODS Steel Djamel Kaoumi1 , Arthur Motta1 Laboratory, Argonne, IL 060493, USA INTRODUCTION Oxide dispersion strengthened (ODS) Ferritic. EXPERIMENT Material Characterization Prior to Irradiation MA957 ODS alloy (Fe­14Cr­1Ti­0.3Mo­0.25Y2O3

  14. Preparation and characterization of VOx/TiO2 catalytic coatings on stainless steel plates for structured catalytic reactors.

    E-Print Network [OSTI]

    Boyer, Edmond

    for structured catalytic reactors. Thierry Giornelli, Axel Löfberg* and Elisabeth Bordes-Richard Unité de.Lofberg@univ-lille1.fr Abstract The parameters to be controlled to coat metallic walls by VOx/TiO2 catalysts which) was chosen because of its large application in industrial catalytic reactors. TiO2 films on stainless steel

  15. Influence of Nitrogen Doping on the Defect Formation and Surface Properties of TiO2 Rutile and Anatase

    E-Print Network [OSTI]

    Diebold, Ulrike

    Influence of Nitrogen Doping on the Defect Formation and Surface Properties of TiO2 Rutile, New Orleans, Louisiana 70118, USA (Received 25 July 2005; published 20 January 2006) Nitrogen doping numbers: 68.35.ÿp, 81.05.Je, 82.65.+r Titanium dioxide (TiO2) is a good photocatalyst for the remediation

  16. Effect of ausforming via severe plastic deformation on shape memory behavior of NiTi

    E-Print Network [OSTI]

    Kulkarni, Ajay V.

    2006-04-12T23:59:59.000Z

    In this study, Thermomechanical properties of Ti-50.8 and 50.7 at% Ni alloy severely deformed using Equal Channel Angular Extrusion (ECAE) are investigated. The aim of this study is to reveal the effects of severe plastic deformation on shape memory...

  17. Discussion! Measurements on these suites of L and LL chondrites show that internal variation in Ti

    E-Print Network [OSTI]

    Grossman, Lawrence

    with substitution of hydrogen, which bonds with oxygen in the lattice to form hydroxyl groups. ! The charge excess in olivine with increasing grade is consistent with diffusive loss of hydrogen during heating and entry of Ti. (2012) This meeting, Abst. #2601.! Effects of Metamorphism on the Valence and Coordination of! Titanium

  18. The Effects of the TI-Navigator System on Student Achievement (Algebra I)

    E-Print Network [OSTI]

    Wurtele, Eve Syrkin

    The Effects of the TI-Navigator System on Student Achievement (Algebra I) Demographics of Sample (n in student understanding and attitudes when technology was used in Algebra I. 2. Used two types of technology and warranted. Other technologies could also be compared and developed to contribute to algebra students

  19. A Scientific and Engineering C ti Cl t F iComputing Cluster Focusing on

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    A Scientific and Engineering C ti Cl t F iComputing Cluster Focusing on the Modeling faculty cover all time and length scales ~50 researchers Combustion chemistry Material fatigue 50;CrossDisciplinary Expertise · Chemistry ­ Bagus · Engineering ­ Boetcher (M&EE) ­ Borden ­ Cundari

  20. Investigation of the Ti/MgCl{sub 2} interface on a Si(111) 7 x 7 substrate

    SciTech Connect (OSTI)

    Karakalos, S.; Siokou, A. [FORTH/ICE-HT, P.O. Box 1414, GR-26504 Rion, Patras (Greece); Skala, T.; Matolin, V. [Charles University, Faculty of Mathematics and Physics, Department of Surface and Plasma Science, V Holesovickach 2, 18000 Prague 8 (Czech Republic); Plekan, O. [Sincrotrone Trieste, AREA Science Park, I-34012 Basovizza (Italy); Ladas, S. [FORTH/ICE-HT, P.O. Box 1414, GR-26504 Rion, Patras (Greece); Surface Science Laboratory, Department of Chemical Engineering, University of Patras, GR-26504, Rion, Patras (Greece); Prince, K. [Sincrotrone Trieste, AREA Science Park, I-34012 Basovizza (Italy); INFM, Laboratorio TASC, in Area Science Park, Strada Statale 14, Km 163.5, 34012 Basovizza-Trieste (Italy); Chab, V. [Institute of Physics, Chech Academy of Sciences, Cucrovarnicka 10, Prague (Czech Republic)

    2012-06-14T23:59:59.000Z

    Photoelectron spectroscopy with synchrotron radiation, low energy electron diffraction, and ion-scattering spectroscopy were used in order to study the Ti/MgCl{sub 2} interface grown on an atomically clean Si(111) 7 x 7 substrate. A series of high resolution spectra after deposition of a thick MgCl{sub 2} layer, step by step deposition of Ti and gradual annealing, indicated a very reactive interface even at room temperature. Strong interaction between the incoming Ti atoms and the MgCl{sub 2} layer, leads to the formation of Ti{sup 2+} and Ti{sup 4+} oxidation states. The interfacial interaction continues even at multilayer Ti coverage mainly by the partial disruption of Mg-Cl bonds and the formation of Ti-Cl sites, rendering this interface a very promising UHV-compatible model of a pre-catalyst for olefin polymerization. After the final annealing, the MgCl{sub 2} multilayers desorb while Ti remains on the surface forming a silicide layer on which Cl and Mg atoms are attached.

  1. Study on the use of TiO{sub 2} passivation layer to reduce recombination losses in dye sensitized solar cells

    SciTech Connect (OSTI)

    Eskander bin Samsudin, Adel; Mohamed, Norani Muti; Nayan, Nafarizal; Ali, Riyaz Ahmad Mohamed; Shariffuddin, Sharifah Amira Amir; Omar, Salwa [Electrical and Electronics Department, 31750, Tronoh, Universiti Teknologi PETRONAS (Malaysia); Fundamental and Applied Sciences Department, 31750, Tronoh, Universiti Teknologi PETRONAS (Malaysia); Electronic Engineering Department, Electrical and Electronic Engineering Faculty, Universiti Tun Hussein Onn Malaysia (UTHM) (Malaysia)

    2012-09-26T23:59:59.000Z

    A lot of research on various aspects of dye solar cells (DSC) has been carried out in order to improve efficiency. This paper analyzes the utilization of TiO{sub 2} passivation layers of different thicknesses by improving the electron transport properties. Four different thicknesses of passivation layers namely 10, 20, 50 and 100 nm were deposited onto the working electrode using r.f sputtering. The electrodes were assembled into TiO{sub 2} based DSC with active area of 1 cm{sup 2}. The solar performance was investigated using 100 mW/cm{sup 2} of AM 1.5 simulated sunlight from solar simulator. The kinetics of the solar cells was investigated using Electrochemical Impedance Spectroscopy (EIS) measurement and the spectral response was measured using Incident Photon to Electron Conversion (IPCE) measurement system. The highest efficiency was found for DSC with 20 nm passivation layer. DSCs with the passivation layer have open circuit voltage, V{sub OC} increased by 57 mV, their current density, J{sub SC} increased by 0.774 mA cm{sup -2} compared to the one without the passivation layer. The quantum efficiency of the 20 nm passivation layer is the highest, peaking at the wavelength of 534 nm, resulting in the highest performance. All DSCs with the passivation layer recorded higher ratio of R{sub BR}/R{sub T} where R{sub T} is the diffusion resistance of the TiO{sub 2} particles in the mesoscopic layer and R{sub BR} is the recombination resistance of the electron to the electrolyte. This implies that the recombination of the electrolyte I{sup -}{sub 3}/3I{sup -} couple at the substrate/electrolyte interface has been effectively reduced resulting in an enhanced efficiency.

  2. Gas-phase transport of WF6 through annular nanopipes in TiN during chemical vapor deposition of W on TiN/Ti/SiO2 structures for integrated

    E-Print Network [OSTI]

    Allen, Leslie H.

    Gas-phase transport of WF6 through annular nanopipes in TiN during chemical vapor deposition of W through the 106-nm-thick TiN film. W piles up at the TiN/Ti interface, while F rapidly saturates the TiN-sectional and scanning transmission electron microscopy analyses demonstrate that WF6 penetrates into the TiN layer

  3. Thermodynamic and kinetic analyses of the CO2 chemisorption mechanism on Na2TiO3: Experimental and theoretical evidences

    SciTech Connect (OSTI)

    Duan, Yuhua [U.S. DOE

    2014-01-01T23:59:59.000Z

    ABSTRACT: Sodium metatitanate (Na2TiO3) was successfully synthesized via a solid-state reaction. The Na2TiO3 structure and microstructure were characterized using X-ray diffraction, scanning and transmission electron microscopy, and N2 adsorption. Then, the CO2 chemisorption mechanism on Na2TiO3 was systematically analyzed to determine the influence of temperature. The CO2 chemisorption capacity of Na2TiO3 was evaluated both dynamically and isothermally, and the products were reanalyzed to elucidate the Na2TiO3?CO2 reaction mechanism. Different chemical species (Na2CO3, Na2O, and Na4Ti5O12 or Na16Ti10O28) were identified during the CO2 capture process in Na2TiO3. In addition, some CO2 chemisorption kinetic parameters were determined. The ?H? was found to be 140.9 kJ/mol, to the Na2TiO3?CO2 system, between 600 and 780 °C. Results evidenced that CO2 chemisorption on Na2TiO3 highly depends on the reaction temperature. Furthermore, the experiments were theoretically supported by different thermodynamic calculations. The calculated thermodynamic properties of CO2 capture reactions by (Na2TiO3, Na4Ti5O12, and Na16Ti10O28) sodium titanates were fully investigated.

  4. Controllable nitrogen doping in as deposited TiO{sub 2} film and its effect on post deposition annealing

    SciTech Connect (OSTI)

    Deng, Shaoren; Devloo-Casier, Kilian; Devulder, Wouter; Dendooven, Jolien; Deduytsche, Davy; Detavernier, Christophe, E-mail: Christophe.Detavernier@ugent.be [Department of Solid State Sciences, Ghent University, Krijgslaan 281/S1, B-9000 Gent (Belgium); Verbruggen, Sammy W. [Department of Bio-Engineering Sciences, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium and Center for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg 23, B-3001 Heverlee (Belgium); Lenaerts, Silvia [Department of Bio-Engineering Sciences, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp (Belgium); Martens, Johan A. [Center for Surface Chemistry and Catalysis, KU Leuven, Kasteelpark Arenberg 23, B-3001 Heverlee (Belgium); Van den Berghe, Sven [SCK-CEN, Boeretang 200, B-2400 Mol (Belgium)

    2014-01-15T23:59:59.000Z

    In order to narrow the band gap of TiO{sub 2}, nitrogen doping by combining thermal atomic layer deposition (TALD) of TiO{sub 2} and plasma enhanced atomic layer deposition (PEALD) of TiN has been implemented. By altering the ratio between TALD TiO{sub 2} and PEALD TiN, the as synthesized TiO{sub x}N{sub y} films showed different band gaps (from 1.91?eV to 3.14?eV). In situ x-ray diffraction characterization showed that the crystallization behavior of these films changed after nitrogen doping. After annealing in helium, nitrogen doped TiO{sub 2} films crystallized into rutile phase while for the samples annealed in air a preferential growth of the anatase TiO{sub 2} along (001) orientation was observed. Photocatalytic tests of the degradation of stearic acid were done to evaluate the effect of N doping on the photocatalytic activity.

  5. Electrical properties of TiN on gallium nitride grown using different deposition conditions and annealing

    SciTech Connect (OSTI)

    Li, Liuan; Kishi, Akinori; Shiraishi, Takayuki; Jiang, Ying; Wang, Qingpeng; Ao, Jin-Ping, E-mail: jpao@ee.tokushima-u.ac.jp [Institute of Technology and Science, The University of Tokushima, Tokushima 770-8506 (Japan)

    2014-03-15T23:59:59.000Z

    This study evaluates the thermal stability of different refractory metal nitrides used as Schottky electrodes on GaN. The results demonstrate that TiN, MoSiN, and MoN possess good rectification and adhesion strength, with barrier heights of 0.56, 0.54, and 0.36?eV, respectively. After thermal treatment at 850?°C for 1?min, the TiN and MoN electrodes still exhibit rectifying characteristics, while the MoSiN degrades to an ohmic-like contact. For further study, several TiN films are deposited using different N{sub 2}/Ar reactive/inert sputtering gas ratios, thereby varying the nitrogen content present in the sputtering gas. Ohmic-like contact is observed with the pure Ti contact film, and Schottky characteristics are observed with the samples possessing nitrogen in the film. The average Schottky barrier height is about 0.5?eV and remains virtually constant with varying nitrogen deposition content. After examining Raman spectra and x-ray photoelectron spectroscopy results, the increase in the film resistivity after thermal treatment is attributed to oxidation and/or nitridation. Films deposited with a medium (40% and 60%) nitrogen content show the best film quality and thermal stability.

  6. Observation of negative differential capacitance (NDC) in Ti Schottky diodes on SiGe islands

    SciTech Connect (OSTI)

    Rangel-Kuoppa, Victor-Tapio; Jantsch, Wolfgang [Institute of Semiconductor and Solid State Physics, Johannes Kepler Universität, A-4040 Linz (Austria); Tonkikh, Alexander; Zakharov, Nikolay; Werner, Peter [Max Planck Institute of Microstructure Physics, Weinberg 2 D-06120, Halle (Germany)

    2013-12-04T23:59:59.000Z

    The Negative Differential Capacitance (NDC) effect on Ti Schottky diodes formed on n-type Silicon samples with embedded Germanium Quantum Dots (QDs) is observed and reported. The NDC-effect is detected using capacitance-voltage (CV) method at temperatures below 200 K. It is explained by the capture of electrons in Germanium QDs. Our measurements reveal that each Ge QD captures in average eight electrons.

  7. MA 266 Review Topics - Exam # 2

    E-Print Network [OSTI]

    2012-03-05T23:59:59.000Z

    Page 1. Spring 2012. MA 266. Review Topics - Exam # 2 ..... and using a table of Laplace transforms (see table on page 317) and using linearity : L{f(t) + g(t)} ...

  8. MA 266 Review Topics - Exam # 2 (updated)

    E-Print Network [OSTI]

    2012-04-23T23:59:59.000Z

    Page 1. Spring 2012. MA 266. Review Topics - Exam # 2 (updated) ..... and using a table of Laplace transforms (see table on page 317) and using linearity : L{f(t) ...

  9. Quasi-zero lattice mismatch and band alignment of BaTiO{sub 3} on epitaxial (110)Ge

    SciTech Connect (OSTI)

    Hudait, M. K.; Zhu, Y.; Jain, N. [Bradley Department of Electrical and Computer Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States); Maurya, D.; Zhou, Y.; Priya, S [Center for Energy Harvesting Materials and Systems (CEHMS), Virginia Tech, Blacksburg, Virginia 24061 (United States)

    2013-07-14T23:59:59.000Z

    Growth, structural, and band alignment properties of pulsed laser deposited amorphous BaTiO{sub 3} on epitaxial molecular beam epitaxy grown (110)Ge layer, as well as their utilization in low power transistor are reported. High-resolution x-ray diffraction demonstrated quasi-zero lattice mismatch of BaTiO{sub 3} on (110)Ge. Cross-sectional transmission electron microscopy micrograph confirms the amorphous nature of BaTiO{sub 3} layer as well as shows a sharp heterointerface between BaTiO{sub 3} and Ge with no traceable interfacial layer. The valence band offset, {Delta}E{sub v}, of 1.99 {+-} 0.05 eV at the BaTiO{sub 3}/(110)Ge heterointerface is measured using x-ray photoelectron spectroscopy. The conduction band offset, {Delta}E{sub c}, of 1.14 {+-} 0.1 eV is calculated using the bandgap energies of BaTiO{sub 3} of 3.8 eV and Ge of 0.67 eV. These band offset parameters for carrier confinement and the interface chemical properties of the BaTiO{sub 3}/(110)Ge system are significant advancement towards designing Ge-based p-and n-channel metal-oxide semiconductor field-effect transistors for low-power application.

  10. Importance of Diffusion in Methanol Photochemistry on TiO2(110)

    SciTech Connect (OSTI)

    Shen, Mingmin; Acharya, Danda P.; Dohnalek, Zdenek; Henderson, Michael A.

    2012-12-06T23:59:59.000Z

    The photoactivity of methanol on the rutile TiO2(110) surface is shown to depend on the ability of methanol to diffuse on the surface and find sites active for its thermal dissociation to methoxy. Temperature programmed desorption (TPD) results show that the extent of methanol photodecomposition to formaldehyde is negligible on the clean TiO2(110) surface at 100 K due to a scarcity of sites that can convert (photoinactive) methanol to (photoactive) methoxy. The extent of photoactivity at 100 K significantly increases when methanol is coadsorbed with oxygen, however only those molecules able to adsorb near (next to) a coadsorbed oxygen species are active. Preannealing coadsorbed methanol and oxygen to above 200 K prior to UV irradiation results in a significant increase in photoactivity. Scanning tunneling microscopy (STM) images clearly show that the advent of increased photoactivity in TPD correlates with the onset of methanol diffusion along the surface’s Ti4+ rows at ~200 K. These results demonstrate that optimizing thermal processes (such as diffusion or proton transfer reactions) can be critical to maximizing photocatalytic reactivity on TiO2 surfaces. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. Pacific Northwest National Laboratory (PNNL) is a multiprogram national laboratory operated for DOE by Battelle under contract DEAC05-76RL01830. The research was performed using EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory.

  11. The characterization of fluorocarbon films on NiTi alloy by magnetron sputtering *, F.T. Zi a

    E-Print Network [OSTI]

    Zheng, Yufeng

    , as corrosion resistant barriers, as gas permeation membranes, and as low energy surfaces [2]. RF magnetron Nickel­titanium PTFE A B S T R A C T Fluorocarbon films were deposited on nickel­titanium (NiTi) alloy

  12. Interface and Size Effects on TiN-based Nanostructured Thin Films

    E-Print Network [OSTI]

    Kim, Ickchan

    2012-07-16T23:59:59.000Z

    and theoretically. For example, microstructural changes caused by helium ion-irradiation in several multilayer systems, including immiscible Cu/Nb [16], Cu/V [7], and miscible Al/Nb [17], and Fe/W [8], have been systematically studied. It was reported... components. Further elaboration on the microstructure and composition of nitride films has improved dramatically some properties of these nitride films [26], a quick example shows that nanocrystalline quality of TiN films enhances grain boundary sliding...

  13. Effect of silicon on ultra-low temperature toughness of Nb–Ti microalloyed cryogenic pressure vessel steels

    SciTech Connect (OSTI)

    Qiu, J.A. [Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081 (China); Wu, K.M., E-mail: wukaiming2000@yahoo.com [Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081 (China); Li, J.H. [Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081 (China); Research and Development Center of WISCO, Wuhan 430080 (China); Hodgson, P.D. [Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081 (China); Institute for Frontier Materials, Deakin University, Geelong, Victoria 3220 (Australia); Hou, T.P. [Hubei Collaborative Innovation Center for Advanced Steels, International Research Institute for Steel Technology, Wuhan University of Science and Technology, Wuhan 430081 (China); Ding, Q.F. [Research and Development Center of WISCO, Wuhan 430080 (China)

    2013-09-15T23:59:59.000Z

    The effect of Si on the ultra-low temperature toughness of Nb–Ti microalloyed cryogenic pressure vessel steels was investigated by electron back-scattered diffraction and transmission electron microscope with energy dispersive spectroscopy. Equiaxed ferrite and bainite were obtained in the tempered steels with small Si additions. Nanosized Nb–Ti carbides (< 10 nm) were formed in the steel containing 0.05% Si, whereas much coarser carbides (> 30 nm) were found in the steel containing 0.47% Si. The ultra-low temperature toughness of the Nb–Ti microalloyed cryogenic pressure vessel steel was remarkably enhanced by the reduction in the Si content, which was attributed to the pre-existing iron carbide formation before the precipitation of nanosized Nb–Ti carbides during tempering. - Highlights: • Nanosized Nb-Ti carbides formed in the tempered steel with smaller Si addition. • Coarser Nb-Ti carbides formed in the tempered steel with more Si addition. • Pre-existing cememtites provide nucleation sites for Nb-Ti carbide precipitation. • Ultra-low temperature toughness was remarkably enhanced by Si content reduction.

  14. Diffusion of CO{sub 2} on Rutile TiO{sub 2}(110) Surface

    SciTech Connect (OSTI)

    Lee, Junseok; Sorescu, Dan C.; Deng, Xingyi; Jordan, Kenneth D.

    2011-12-15T23:59:59.000Z

    The diffusion of CO{sub 2} molecules on a reduced rutile TiO{sub 2}(110)-(1×1) surface has been investigated using scanning tunneling microscopy (STM) and density functional theory (DFT) calculations. The STM feature associated with a CO{sub 2} molecule at an oxygen vacancy (V{sub O}) becomes increasingly streaky with increasing temperature, indicating thermally activated CO{sub 2} diffusion from the V{sub O} site. From temperature-dependent tunneling current measurements, the barrier for diffusion of CO{sub 2} from the V{sub O} site is estimated to be 3.31 ± 0.23 kcal/mol. The corresponding value from the DFT calculations is 3.80 kcal/mol. In addition, the DFT calculations give a barrier for diffusion of CO{sub 2} along Ti rows of only 1.33 kcal/mol.

  15. Environmental effect on room-temperature ductility of isothermally forged TiAl-base alloys

    SciTech Connect (OSTI)

    Nakamura, Morihiko; Hashimoto, Kenki (National Research Inst. for Metals, Tokyo (Japan)); Itoh, Naoyuki (Nippon Steel Corp., Chiba (Japan)); Tsujimoto, Tokuzo (Ibaraki Univ. (Japan). Faculty of Engineering); Suzuki, Toshiyuki (Kougakuin Univ., Tokyo (Japan))

    1994-02-01T23:59:59.000Z

    Isothermally forged TiAl-base alloy (Al-rich, Mn-containing, and Cr-containing TiAl) were heat-treated in various conditions, and equiaxed grain structures consisting of [gamma] and [alpha][sub 2] or [beta] phases were obtained. The heat-treated alloys were tensile tested in vacuum and air at room temperature, and the environmental effect on tensile elongation was studied. The ductility of the alloys consisting of equiaxed [gamma] grains and a large amount of [alpha][sub 2] grains was not largely affecting by laboratory air, and a decrease in the amount of [alpha][sub 2] grains resulted in a large reduction of ductility in air. The [beta] phase in the Cr-containing alloy improved the ductility in vacuum, but it resulted in a large reduction of ductility in air.

  16. Use of plasma treatment to grow carbon nanotube forests on TiN substrate

    SciTech Connect (OSTI)

    Esconjauregui, S.; Bayer, B. C.; Fouquet, M.; Wirth, C. T.; Yan, F.; Xie, R.; Hofmann, S.; Robertson, J. [Department of Engineering, University of Cambridge, Cambridge CB3 0FA (United Kingdom); Ducati, C. [Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB2 3QZ (United Kingdom); Baehtz, C. [Institute of Ion Beam Physics and Materials Research, Forschungszentrum Dresden Rossendorf e.V., P.O. Box 51 01 19, D-01314 Dresden (Germany); Castellarin-Cudia, C. [Sincrotrone Trieste SCpA, Strada Statale, 14 km 163.4, I-34149, Trieste (Italy); Istituto Officina dei Materiali-CNR Laboratorio TASC, s.s. 14, km 163.4, I-34012 Trieste (Italy); Bhardwaj, S.; Cepek, C. [Istituto Officina dei Materiali-CNR Laboratorio TASC, s.s. 14, km 163.4, I-34012 Trieste (Italy)

    2011-06-01T23:59:59.000Z

    Hydrogen plasma pretreatment is used to enforce the growth of vertically-aligned carbon nanotube forests on TiN substrates. The evolution of the substrate, catalyst, and nanotubes are studied by in situ and ex-situ photoemission and X-ray diffraction in order to understand the growth mechanism. We find that TiN retains its crystallographic structure and its conductivity during plasma pretreatment and nanotube growth, which is confirmed by electrical measurements. Plasma pretreatment is found to favor the growth of nanotube forests by root growth, as it binds the catalyst nanoparticles more strongly to the substrate than thermal pretreatment. We find that plasma pretreatment time should be limited, otherwise poor or no growth is found.

  17. Influence of high power impulse magnetron sputtering plasma ionization on the microstructure of TiN thin films

    SciTech Connect (OSTI)

    Ehiasarian, A. P.; Vetushka, A. [Nanotechnology Centre for PVD Research, Materials and Engineering Institute, Sheffield Hallam University, Howard Street, Sheffield, S1 1WB (United Kingdom); Gonzalvo, Y. Aranda [Plasma and Surface Division, Hiden Analytical Ltd., 420 Europa Boulevard, Warrington, WA5 7UN (United Kingdom); Safran, G.; Szekely, L.; Barna, P. B. [Research Institute for Technical Physics and Materials Science, H-1525 Budapest, P.O. Box 49 (Hungary)

    2011-05-15T23:59:59.000Z

    HIPIMS (High Power Impulse Magnetron Sputtering) discharge is a new PVD technology for the deposition of high-quality thin films. The deposition flux contains a high degree of metal ionization and nitrogen dissociation. The microstructure of HIPIMS-deposited nitride films is denser compared to conventional sputter technologies. However, the mechanisms acting on the microstructure, texture and properties have not been discussed in detail so far. In this study, the growth of TiN by HIPIMS of Ti in mixed Ar and N{sub 2} atmosphere has been investigated. Varying degrees of metal ionization and nitrogen dissociation were produced by increasing the peak discharge current (I{sub d}) from 5 to 30 A. The average power was maintained constant by adjusting the frequency. Mass spectrometry measurements of the deposition flux revealed a high content of ionized film-forming species, such as Ti{sup 1+}, Ti{sup 2+} and atomic nitrogen N{sup 1+}. Ti{sup 1+} ions with energies up to 50 eV were detected during the pulse with reducing energy in the pulse-off times. Langmuir probe measurements showed that the peak plasma density during the pulse was 3 x 10{sup 16} m{sup -3}. Plasma density, and ion flux ratios of N{sup 1+}: N{sub 2}{sup 1+} and Ti{sup 1+}: Ti{sup 0} increased linearly with peak current. The ratios exceeded 1 at 30 A. TiN films deposited by HIPIMS were analyzed by X-ray diffraction, and transmission electron microscopy. At high I{sub d}, N{sup 1+}: N{sub 2}{sup 1+} > 1 and Ti{sup 1+}: Ti{sup 0} > 1 were produced; a strong 002 texture was present and column boundaries in the films were atomically tight. As I{sub d} reduced and N{sup 1+}: N{sub 2}{sup 1+} and Ti{sup 1+}: Ti{sup 0} dropped below 1, the film texture switched to strong 111 with a dense structure. At very low I{sub d}, porosity between columns developed. The effects of the significant activation of the deposition flux observed in the HIPIMS discharge on the film texture, microstructure, morphology and properties are discussed.

  18. Ookie Ma | Department of Energy

    Energy Savers [EERE]

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  19. US NE MA Site Consumption

    U.S. Energy Information Administration (EIA) 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 onYou are now leaving Energy.gov You are now leaving Energy.gov YouKizildere IRaghuraji Agro IndustriesTownDells,1Stocks Nov-14TotalThe Outlook269,023Year69,023US Virgin120Mnt(N)NE MA

  20. Influence of fatigue on the nanohardness of NiTiCr-wires

    SciTech Connect (OSTI)

    Frotscher, M. [Ruhr University, Bochum, Germany; Young, M. L. [Ruhr University, Bochum, Germany; Bei, Hongbin [ORNL; George, Easo P [ORNL; Neuking, K. [Ruhr University, Bochum, Germany; Eggeler, G. [Ruhr University, Bochum, Germany

    2009-01-01T23:59:59.000Z

    Testing parameters, such as rotational speed and bending radius, have a strong influence on the fatigue life of pseudoelastic NiTi shape-memory alloys during bending rotation fatigue (BRF) experiments [M. F. X. Wagner, Int. J. Mat. Res. 97 (2006), p. 1687-1696. and M. Frotscher, et al., Thermomechanical processing, microstructure and bending rotation fatigue of ultra-fine grained NiTiCr-wires, Proceedings of the International Conference for Shape Memory and Superelastic Technologies (SMST 2007), Tsukuba, Japan, ASM International, (2008), p. 149-158.]. Previous studies showed a decrease in the fatigue life for smaller bending radius (i.e. higher equivalent strain) and larger rotational speed. This observation is associated with an increase of dislocation density, the stabilization of stressinduced martensite during cycling, and an increase of the plateau stresses due to self-heating. In the present study, we examine the influence of these fatigue parameters on the nanohardness and shape recovery of pseudoelastic NiTiCr shape-memory alloy wires by nanoindentation. We show that nanoindentation is a suitable method for the characterization of fatigue-related microstructural changes, which affect the mechanical properties.

  1. Two Pathways for Water Interaction with Oxygen Adatoms on TiO2...

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

    or adjacent Ti4+ rows, Oa facilitates H2O dissociation and proton transfer to form a terminal hydroxyl pair, positioned along- or across-Ti row, respectively. The latter process...

  2. Epitaxial Cr on n-SrTiO3(001)—An ideal Ohmic contact ....

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

    beam epitaxy are shown to result in an ordered interface with Cr bound to O in the terminal TiO2 layer, no reduction of the SrTiO3, and a near-perfect Ohmic contact. Cr...

  3. Role of Water in Methanol Photochemistry on Rutile TiO2(110)

    SciTech Connect (OSTI)

    Shen, Mingmin; Henderson, Michael A.

    2012-08-07T23:59:59.000Z

    Photochemistry of the molecularly and dissociatively adsorbed forms of methanol on the vacuum-annealed rutile TiO2(110) surface was explored using temperature programmed desorption (TPD), both with and without coadsorbed water. Methoxy, and not methanol, was confirmed as the photochemically active form of adsorbed methanol on this surface. UV irradiation of methoxy-covered TiO2(110) lead to depletion of the methoxy coverage and formation of formaldehyde and a surface OH group. Coadsorbed water did not promote either molecular methanol photochemistry or thermal decomposition of methanol to methoxy. However, terminal OH groups (OHt), prepared by coadsorption of water and oxygen atoms, thermally converted molecularly adsorbed methanol to methoxy at 120 K, thus enabling photoactivity. While chemisorbed water molecules had no influence on methoxy photochemistry, water molecules hydrogen-bonded in the second layer to bridging oxygen (Obr) sites inhibited the methoxy photodecomposition to formaldehyde. From this we conclude that Obr sites accept protons from the hole-mediated conversion of methoxy to formaldehyde. These results provide new fundamental understanding of the hole-scavenging role of methanol in photochemical processes on TiO2-based materials and how water influences this photochemistry. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. Pacific Northwest National Laboratory (PNNL) is a multiprogram national laboratory operated for DOE by Battelle under contract DEAC05-76RL01830. The research was performed using EMSL, a national scientific user facility sponsored by the Department of Energy's Office of Biological and Environmental Research and located at Pacific Northwest National Laboratory.

  4. Taught degrees MA in Creative Media Practice

    E-Print Network [OSTI]

    Sussex, University of

    informed creative practice across digital media, photography and a range of aural and visual forms.maddox@sussex.ac.uk www.sussex.ac.uk/mfm Essentials Taught degrees MA in Creative Media Practice MA in Digital Documentary MA in Digital Media MA in Gender and Media MA in Media and Cultural Studies MA in Media Practice

  5. The Influence of Ni-Coated TiC on Laser-Deposited IN625 Metal Matrix Composites

    E-Print Network [OSTI]

    2010-01-01T23:59:59.000Z

    matrix and the TiC particles, the interaction between the laser beam and TiC ceramicmatrix and the TiC particles, the interaction between the laser beam and the TiC ceramic

  6. The ma Ni Song 2

    E-Print Network [OSTI]

    Zla ba sgrol ma

    2009-11-10T23:59:59.000Z

    ba sgrol ma Date of recording November 10th 2009. Place of recording Ci jo Village, Phu ma Township, Sde dge County, Dkar mdzes Tibetan Autonomous Prefecture, Sichuan Province, China. Name(s), age, sex, place of birth of performer(s) Bo... nyed. Female. Born 1954. and Song rgyas dbar sgron. Female. Born 1992 Ci jo Village, Phu ma Township, Sde dge County, Dkar mdzes Tibetan Autonomous Prefecture, Sichuan Province, China. Language of recording Khams Tibetan Performer(s)’s first...

  7. The ma Ni Song 1

    E-Print Network [OSTI]

    Zla ba sgrol ma

    2009-11-10T23:59:59.000Z

    ba sgrol ma Date of recording November 10th 2009. Place of recording Ci jo Village, Phu ma Township, Sde dge County, Dkar mdzes Tibetan Autonomous Prefecture, Sichuan Province, China. Name(s), age, sex, place of birth of performer(s) Bo... nyed. Female. Born 1954. Ci jo Village, Phu ma Township, Sde dge County, Dkar mdzes Tibetan Autonomous Prefecture, Sichuan Province, China. Language of recording Khams Tibetan Performer(s)’s first / native language Khams Tibetan Performer...

  8. The ma Ni Song 5

    E-Print Network [OSTI]

    Zla ba sgrol ma

    2009-11-10T23:59:59.000Z

    ba sgrol ma Date of recording November 10th 2009. Place of recording Ci jo Village, Phu ma Township, Sde dge County, Dkar mdzes Tibetan Autonomous Prefecture, Sichuan Province, China. Name(s), age, sex, place of birth of performer(s) Chos... tdog. Female. Born 1984. Song rgyas dpar sgron. Female. Born 1992. Ci jo Village, Phu ma Township, Sde dge County, Dkar mdzes Tibetan Autonomous Prefecture, Sichuan Province, China. Language of recording Khams Tibetan Performer(s)’s first...

  9. The ma Ni Song 3

    E-Print Network [OSTI]

    Zla ba sgrol ma

    2009-11-10T23:59:59.000Z

    ba sgrol ma Date of recording November 10th 2009. Place of recording Ci jo Village, Phu ma Township, Sde dge County, Dkar mdzes Tibetan Autonomous Prefecture, Sichuan Province, China. Name(s), age, sex, place of birth of performer(s) Bo... nyed. Female. Born 1954 and Song rgyas dbar sgron. Female. Born 1992. Ci jo Village, Phu ma Township, Sde dge County, Dkar mdzes Tibetan Autonomous Prefecture, Sichuan Province, China. Language of recording Khams Tibetan Performer(s)’s first...

  10. Advice for succeeding in the MA 15300Y

    E-Print Network [OSTI]

    Devlin, Patrick M

    2015-01-01T23:59:59.000Z

    Advice for succeeding in MA 15300Y. 1. Spend time every day working on the course (watching videos, reviewing PowerPoints, doing homework, completing ...

  11. Course Materials • ALWAYS check the MA 15300 website FIRST ...

    E-Print Network [OSTI]

    Devlin, Patrick M

    2015-01-03T23:59:59.000Z

    policies and understand all the course materials on the website. • ALWAYS check the MA 15300 · website FIRST when searching for class information.

  12. Radiation Protection Instrument Manual, Revision 1, PNL-MA-562

    SciTech Connect (OSTI)

    Johnson, Michelle Lynn

    2009-09-23T23:59:59.000Z

    PNL-MA-562 This manual provides specific information for operating and using portable radiological monitoring instruments available for use on the Hanford Site.

  13. WIND DATA REPORT FALMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT FALMOUTH, MA June1, 2004 to August 31, 2004. Prepared for Massachusetts Technology...................................................................................................................... 8 Wind Speed Time Series............................................................................................................. 8 Wind Speed Distributions

  14. WIND DATA REPORT DARTMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT DARTMOUTH, MA March 26th 2005 to May 31st 2005. Prepared for Massachusetts...................................................................................................................... 9 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions

  15. WIND DATA REPORT FALMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT FALMOUTH, MA June 1st 2004- May 31st 2005 Prepared for Massachusetts Technology.................................................................................................................... 10 Wind Speed Distributions......................................................................................................... 11 Monthly Average Wind Speeds

  16. WIND DATA REPORT Kingston, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Kingston, MA March 1, 2006 - May 31, 2006 Prepared for Massachusetts Technology.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions.......

  17. WIND DATA REPORT Nantucket, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Nantucket, MA September 1st 2005 to November 30th 2005. Prepared for Massachusetts.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 10 Wind Speed Distributions

  18. WIND DATA REPORT Wellfleet, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Wellfleet, MA December 1st , 2006 ­ February 28th , 2007 Prepared...................................................................................................................... 8 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions

  19. WIND DATA REPORT Nantucket, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Nantucket, MA June 1st 2006 to August 31th 2006 Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed D

  20. WIND DATA REPORT Chester, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Chester, MA December 2006 ­ February 2007 Prepared for Massachusetts Technology...................................................................................................................... 9 Wind Speed Time Series........................................................................................................... 10 Wind Speed Distributions

  1. WIND DATA REPORT Chester, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Chester, MA March 2007 ­ May 2007 Prepared for Massachusetts Technology...................................................................................................................... 8 Wind Speed Time Series........................................................................................................... 10 Wind Speed Distributions

  2. WIND DATA REPORT Chester, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Chester, MA September ­ November 2006 Prepared for Massachusetts Technology.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  3. WIND DATA REPORT DARTMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT DARTMOUTH, MA September 1st 2005 to November 30th 2005. Prepared for Massachusetts.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 10 Wind Speed Distributions

  4. WIND DATA REPORT Kingston, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Kingston, MA December 1, 2005 - February 28, 2006 Prepared for Massachusetts.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distribution

  5. WIND DATA REPORT Nantucket, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Nantucket, MA December 1st 2005 to February 28th 2006 Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  6. WIND DATA REPORT FALMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT FALMOUTH, MA Sep 1st 2004 to Nov 30th 2004. Prepared for Massachusetts Technology...................................................................................................................... 9 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions

  7. WIND DATA REPORT Chester, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Chester, MA June ­ August 2006 Prepared for Massachusetts Technology Collaborative.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  8. WIND DATA REPORT Nantucket, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Nantucket, MA June 1st 2005 to August 31st 2005. Prepared for Massachusetts.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 10 Wind Speed Distributions

  9. WIND DATA REPORT DARTMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT DARTMOUTH, MA June 1st 2005 to August 31st 2005. Prepared for Massachusetts.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 10 Wind Speed Distributions

  10. WIND DATA REPORT DARTMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT DARTMOUTH, MA December 1st 2005 to February 28th 2006. Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  11. WIND DATA REPORT Dartmouth, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Dartmouth, MA March 1st 2006 to May 31th 2006 Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  12. WIND DATA REPORT Wellfleet, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Wellfleet, MA March 1st , 2007 ­ May 31st , 2007 Prepared for Massachusetts...................................................................................................................... 8 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions

  13. WIND DATA REPORT Chester, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Chester, MA April 14 ­ May 31, 2006 Prepared for Massachusetts Technology.................................................................................................................... 10 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  14. WIND DATA REPORT FALMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT FALMOUTH, MA Dec 1st 2004 to Feb 28th 2005. Prepared for Massachusetts Technology ...................................................................................................................... 9 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions

  15. WIND DATA REPORT FALMOUTH, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT FALMOUTH, MA March 1st 2005 to May 31st 2005. Prepared for Massachusetts...................................................................................................................... 9 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions

  16. WIND DATA REPORT Dartmouth, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Dartmouth, MA June 1st 2006 to July 31th 2006 Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  17. MA 153 Schedule, Fall 2001

    E-Print Network [OSTI]

    math

    2012-08-16T23:59:59.000Z

    For supplemental videos and PowerPoint presentations to go along with these lessons, visit the course website at www.math.purdue.edu/ma153.

  18. WIND DATA REPORT Nantucket, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Nantucket, MA March 1st 2006 to May 31th 2006 Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distribut

  19. Discovery and utilization of sorghum genes (Ma5/Ma6)

    DOE Patents [OSTI]

    Mullet, John E; Rooney, William L; Klein, Patricia E; Morishige, Daryl; Murphy, Rebecca; Brady, Jeff A

    2012-11-13T23:59:59.000Z

    Methods and composition for the production of non-flowering or late flowering sorghum hybrid. For example, in certain aspects methods for use of molecular markers that constitute the Ma5/Ma6 pathway to modulate photoperiod sensitivity are described. The invention allows the production of plants having improved productivity and biomass generation.

  20. Influence of Ni on Martensitic Phase Transformations in NiTi Shape Memory Alloys

    SciTech Connect (OSTI)

    Frenzel, J. [Ruhr University, Bochum, Germany; George, Easo P [ORNL; Dlouhy, A. [Institute of Physics of Materials, Brno, Czech Republic; Somsen, Ch. [Ruhr University, Bochum, Germany; Wagner, M. F.-X [Ruhr University, Bochum, Germany; Eggeler, G. [Ruhr University, Bochum, Germany

    2010-01-01T23:59:59.000Z

    High-precision data on phase transformation temperatures in NiTi, including numerical expressions for the effect of Ni on M{sub S}, M{sub F}, A{sub S}, A{sub F} and T{sub 0}, are obtained, and the reasons for the large experimental scatter observed in previous studies are discussed. Clear experimental evidence is provided confirming the predictions of Tang et al. 1999 regarding deviations from a linear relation between the thermodynamic equilibrium temperature and Ni concentration. In addition to affecting the phase transition temperatures, increasing Ni contents are found to decrease the width of thermal hysteresis and the heat of transformation. These findings are rationalized on the basis of the crystallographic data of Prokoshkin et al. 2004 and the theory of Ball and James. The results show that it is important to document carefully the details of the arc-melting procedure used to make shape memory alloys and that, if the effects of processing are properly accounted for, precise values for the Ni concentration of the NiTi matrix can be obtained.

  1. LIMITS ON THE NUMBER OF GALACTIC YOUNG SUPERNOVA REMNANTS EMITTING IN THE DECAY LINES OF {sup 44}Ti

    SciTech Connect (OSTI)

    Dufour, François; Kaspi, Victoria M., E-mail: dufourf@physics.mcgill.ca [Department of Physics, McGill University, 3600 rue University, Montréal, QC H3A 2T8 (Canada)

    2013-09-20T23:59:59.000Z

    We revise the assumptions of the parameters involved in predicting the number of supernova remnants detectable in the nuclear lines of the decay chain of {sup 44}Ti. Specifically, we consider the distribution of the supernova progenitors, the supernova rate in the Galaxy, the ratios of supernova types, the Galactic production of {sup 44}Ti, and the {sup 44}Ti yield from supernovae of different types to derive credible bounds on the expected number of detectable remnants. We find that, within 1? uncertainty, the Galaxy should contain an average of 5.1{sup +2.4}{sub -2.0} remnants detectable to a survey with a {sup 44}Ti decay line flux limit of 10{sup –5} photons cm{sup –2} s{sup –1}, with a probability of detecting a single remnant of 2.7{sup +10.0}{sub -2.4}%, and an expected number of detections between two and nine remnants, making the single detection of Cas A unlikely but consistent with our models. Our results show that the probability of detecting the brightest {sup 44}Ti flux source at the high absolute Galactic longitude of Cas A or above is ?10%. Using the detected flux of Cas A, we attempt to constrain the Galactic supernova rate and Galactic production of {sup 44}Ti, but find the detection to be only weakly informative. We conclude that even future surveys having 200 times more sensitivity than state-of-the-art surveys can be guaranteed to detect only a few new remnants, with an expected number of detections between 8 and 21 at a limiting {sup 44}Ti decay flux of 10{sup –7} photons cm{sup –2} s{sup –1}.

  2. In-operando hard X-ray photoelectron spectroscopy study on the impact of current compliance and switching cycles on oxygen and carbon defects in resistive switching Ti/HfO{sub 2}/TiN cells

    SciTech Connect (OSTI)

    Sowinska, Malgorzata, E-mail: sowinska@ihp-microelectronics.com; Bertaud, Thomas; Walczyk, Damian; Calka, Pauline; Walczyk, Christian [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); Thiess, Sebastian [Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg (Germany); Alff, Lambert [Institute of Materials Science, Technische Universität Darmstadt, 64287 Darmstadt (Germany); Schroeder, Thomas [IHP, Im Technologiepark 25, 15236 Frankfurt (Oder) (Germany); Brandenburgische Technische Universität, Konrad-Zuse-Strasse 1, 03046 Cottbus (Germany)

    2014-05-28T23:59:59.000Z

    In this study, direct experimental materials science evidence of the important theoretical prediction for resistive random access memory (RRAM) technologies that a critical amount of oxygen vacancies is needed to establish stable resistive switching in metal-oxide-metal samples is presented. In detail, a novel in-operando hard X-ray photoelectron spectroscopy technique is applied to non-destructively investigates the influence of the current compliance and direct current voltage sweep cycles on the Ti/HfO{sub 2} interface chemistry and physics of resistive switching Ti/HfO{sub 2}/TiN cells. These studies indeed confirm that current compliance is a critical parameter to control the amount of oxygen vacancies in the conducting filaments in the oxide layer during the RRAM cell operation to achieve stable switching. Furthermore, clear carbon segregation towards the Ti/HfO{sub 2} interface under electrical stress is visible. Since carbon impurities impact the oxygen vacancy defect population under resistive switching, this dynamic carbon segregation to the Ti/HfO{sub 2} interface is suspected to negatively influence RRAM device endurance. Therefore, these results indicate that the RRAM materials engineering needs to include all impurities in the dielectric layer in order to achieve reliable device performance.

  3. Optical near-field induced visible response photoelectrochemical water splitting on nanorod TiO{sub 2}

    SciTech Connect (OSTI)

    Thu Hac Huong Le; Mawatari, Kazuma; Pihosh, Yuriy; Kitamori, Takehiko [Department of Applied Chemistry, Graduate School of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656 (Japan); Kawazoe, Tadashi; Yatsui, Takashi; Ohtsu, Motoichi [Department of Electrical Engineering and Information Systems, Graduate School of Engineering, University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo 113-8656 (Japan); Tosa, Masahiro [Micro-Nano Component Materials Group, Materials Engineering Laboratory, National Institute for Materials Science (NIMS), Sengen 1-2-1, Tsukuba, Ibaraki 305-0047 (Japan)

    2011-11-21T23:59:59.000Z

    Here we report a way to induce the visible response of non-doped TiO{sub 2} in the photocatalytic electrochemical water splitting, which is achieved by utilizing the optical near-field (ONF) generated on nanorod TiO{sub 2}. The visible response is attributed to the ONF-induced phonon-assisted excitation process, in which TiO{sub 2} is excited by sub-bandgap photons via phonon energy. Our approach directly gets involved in the excitation process without chemical modification of materials; accordingly it is expected to have few drawbacks on the photocatalytic performance. This study may offer another perspective on the development of solar harvesting materials.

  4. Centrosymmetric [N(CH{sub 3}){sub 4}]{sub 2}TiF{sub 6} vs. noncentrosymmetric polar [C(NH{sub 2}){sub 3}]{sub 2}TiF{sub 6}: A hydrogen-bonding effect on the out-of-center distortion of TiF{sub 6} octahedra

    SciTech Connect (OSTI)

    Kim, Eun-ah [Department of Chemistry Education, Chung-Ang University, Seoul 156-756 (Korea, Republic of)] [Department of Chemistry Education, Chung-Ang University, Seoul 156-756 (Korea, Republic of); Lee, Dong Woo [Department of Chemistry, Chung-Ang University, Seoul 156-756 (Korea, Republic of)] [Department of Chemistry, Chung-Ang University, Seoul 156-756 (Korea, Republic of); Ok, Kang Min, E-mail: kmok@cau.ac.kr [Department of Chemistry, Chung-Ang University, Seoul 156-756 (Korea, Republic of)

    2012-11-15T23:59:59.000Z

    The syntheses, structures, and characterization of organically templated zero-dimensional titanium fluoride materials, A{sub 2}TiF{sub 6} (A=[N(CH{sub 3}){sub 4}] or [C(NH{sub 2}){sub 3}]), are reported. Phase pure samples of A{sub 2}TiF{sub 6} were synthesized by either solvothermal reaction method or a simple mixing method. While [N(CH{sub 3}){sub 4}]{sub 2}TiF{sub 6} crystallizes in a centrosymmetric space group, R-3, [C(NH{sub 2}){sub 3}]{sub 2}TiF{sub 6} crystallizes in a noncentrosymmetric polar space group, Cm. The asymmetric out-of-center distortion of TiF{sub 6} octahedra in polar [C(NH{sub 2}){sub 3}]{sub 2}TiF{sub 6} are attributable to the hydrogen-bonding interactions between the fluorine atoms in TiF{sub 6} octahedra and the nitrogen atoms in the [C(NH{sub 2}){sub 3}]{sup +} cation. Powder second-harmonic generation (SHG) measurements on the [C(NH{sub 2}){sub 3}]{sub 2}TiF{sub 6}, using 1064 nm radiation, indicate the material has SHG efficiency of 25 Multiplication-Sign that of {alpha}-SiO{sub 2}, which indicates an average nonlinear optical susceptibility, Left-Pointing-Angle-Bracket d{sub eff} Right-Pointing-Angle-Bracket {sub exp} of 2.8 pm/V. Additional SHG measurements reveal that the material is not phase-matchable (Type 1). The magnitudes of out-of-center distortions and dipole moment calculations for TiF{sub 6} octahedra will be also reported. - Graphical abstract: The out-of-center distortion of TiF{sub 6} octahedron in the polar noncentrosymmetric [C(NH{sub 2}){sub 3}]{sub 2}TiF{sub 6} is attributable to the hydrogen-bonding interactions between the F in TiF{sub 6} octahedron and the H-N in the [C(NH{sub 2}){sub 3}]{sup +}. Highlights: Black-Right-Pointing-Pointer Two titanium fluorides materials have been synthesized in high yields. Black-Right-Pointing-Pointer Hydrogen-bonds are crucial for the out-of-center distortion of TiF{sub 6} octahedra. Black-Right-Pointing-Pointer [C(NH{sub 2}){sub 3}]{sub 2}TiF{sub 6} has a SHG efficiency of 25 Multiplication-Sign that of {alpha}-SiO{sub 2}.

  5. The adhesion of electroless Ni(P) on alumina ceramic using a vacuum-deposited Ti-Pd activator layer

    SciTech Connect (OSTI)

    Severin, J.W.; Hokke, R.; Wel, H. van der; Johnson, M.T.; With, G. de (Philips Research Labs., Eindhoven (Netherlands))

    1993-06-01T23:59:59.000Z

    The adhesion of electrolessly deposited nickel on Al[sub 2]O[sub 3] ceramic substrates using sputtered and evaporated Ti-Pd activator films was studied. The adhesion was measured using the direct pull-off test and the 90[degree] peel test. The morphology and the chemical composition of the fracture surfaces of the samples with evaporated Ti-Pd activator film were studied with scanning electron microscopy/energy, dispersive x-ray, and static secondary ion mass spectroscopy. Failure did not occur along the metal-ceramic interface, but mainly in the alumina, and therefore the strength of the system is determined primarily by the substrate material. Cross-sectional transmission electron microscopy and high-resolution transmission electron microscopy were used to study the interface structure before failure. The oxidation state of Ti at the interface was measured with X-ray photoelectron spectroscopy. This was carried out in the (sub)monolayer range by using a Ti wedge deposited on alumina with a maximum thickness of 0.35 nm. It is concluded that the strong adhesion at the metal-ceramic interface is caused by chemical bonding of the first Ti monolayer with substrate oxygen atoms.

  6. Photoelectrochemical water splitting and simultaneous photoelectrocatalytic degradation of organic pollutant on highly smooth and ordered TiO{sub 2} nanotube arrays

    SciTech Connect (OSTI)

    Wu Hongjun [College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318 (China); Institute of Basic Energy Science and Technology, George Washington University, VA 20147 (United States); Zhang Zhonghai, E-mail: zhonghaizhangwill@gmail.com [Institute of Basic Energy Science and Technology, George Washington University, VA 20147 (United States); Graduate School of Science and Engineering for Research, University of Toyama, 3190 Gofuku, Toyama 930-8555 (Japan)

    2011-12-15T23:59:59.000Z

    The photoelectrochemical water splitting and simultaneous photoelectrocatalytic degradation of organic pollutant were achieved on TiO{sub 2} nanotube electrodes with double purposes of environmental protection and renewable energy production under illumination of simulated solar light. The TiO{sub 2} nanotube arrays (TiO{sub 2} NTs) were fabricated by a two-step anodization method. The TiO{sub 2} NTs prepared in two-step anodization process (2-step TiO{sub 2} NTs) showed much better surface smoothness and tube orderliness than TiO{sub 2} NTs prepared in one-step anodization process (1-step TiO{sub 2} NTs). In the photoelectrochemical water splitting and simultaneous photoelectrocatalytic decomposition process, the 2-step TiO{sub 2} NTs electrode showed both highest photo-conversion efficiency of 1.25% and effective photodecomposition efficiency with existing of methylene blue (MB) as sacrificial agent and as pollutant target. Those results implied that the highly ordered nanostructures provided direct pathway and uniform electric field distribution for effective charges transfer, as well as superior capabilities of light harvesting. - Graphical Abstract: The photoelectrochemical water splitting for hydrogen generation and simultaneous photoelectrocatalytic degradation of organic pollutant (methylene blue) were achieved on TiO{sub 2} nanotube electrodes with double purposes of environmental protection and renewable energy production under illumination of simulated solar light. Highlights: Black-Right-Pointing-Pointer TiO{sub 2} nanotube arrays were fabricated by a two-step anodization method. Black-Right-Pointing-Pointer Hydrogen generation and organic pollutant degradation were achieved on TiO{sub 2} NTs. Black-Right-Pointing-Pointer Highest photoconversion efficiency of 1.25% was achieved. Black-Right-Pointing-Pointer Increasing orderliness will increase photocatalytic activity of TiO{sub 2} NTs.

  7. Adsorption of water and ammonia on TiO2-anatase cluster models Isik Onal a,*, Sezen Soyer a

    E-Print Network [OSTI]

    Senkan, Selim M.

    Adsorption of water and ammonia on TiO2-anatase cluster models Isik Onal a,*, Sezen Soyer a , Selim, the adsorption of H2O and NH3 by H-bonding on previously H2O and NH3 dissociated systems, respectively are also considered. It is found that the adsorption energies and geometries of water and ammonia molecules on (101

  8. Influence of praseodymium and nitrogen co-doping on the photocatalytic activity of TiO{sub 2}

    SciTech Connect (OSTI)

    Wu, Jing [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming, Yunnan 650091 (China)] [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming, Yunnan 650091 (China); Liu, Qingju, E-mail: qjliu@ynu.edu.cn [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming, Yunnan 650091 (China)] [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming, Yunnan 650091 (China); Gao, Pan; Zhu, Zhongqi [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming, Yunnan 650091 (China)] [Yunnan Key Laboratory of Nanomaterials and Technology, Yunnan University, Kunming, Yunnan 650091 (China)

    2011-11-15T23:59:59.000Z

    Highlights: {yields} The praseodymium and nitrogen co-doped TiO{sub 2} (Pr-N-TiO{sub 2}) powders were prepared and characterized. {yields} The effects on the photocatalytic activity were studied. {yields} The results exhibit that the spectrum absorption region of the co-doped sample is red-shifted to visible light and the recombination of the photo-generated pairs is inhibited. {yields} The photocatalytic activity is greatly improved. -- Abstract: TiO{sub 2} nanoparticles co-doped with different doping concentration of Pr and N were prepared by sol-gel method combined with microwave chemical method. The samples were characterized by XRD, FT-IR, UV-vis, TEM, XPS, PL, and the photocatalytic activity were investigated by photocatalytic degradation of methylene blue (MB). The results indicate that Pr and N ions incorporate into the lattice of TiO{sub 2}, co-doping restrains the increase of grain size, broadens the absorption region to visible light, and inhibits the recombination of the photo-generated electrons and holes. Moreover, the photocatalytic activity of Pr-N-TiO{sub 2} is remarkable improved due to the synergistic effect of the co-doped ions. The degradation rate of MB in 6 h is 92.81%, which is much higher than that of Degussa P25 (45.01%).

  9. Effects of hydrochloric acid treatment of TiO{sub 2} nanoparticles/nanofibers bilayer film on the photovoltaic properties of dye-sensitized solar cells

    SciTech Connect (OSTI)

    Song, Lixin; Du, Pingfan; Shao, Xiaoli; Cao, Houbao; Hui, Quan [Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018 (China); Xiong, Jie, E-mail: jxiong@zstu.edu.cn [Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018 (China)

    2013-03-15T23:59:59.000Z

    Highlights: ? The TiO{sub 2} nanoparticles/TiO{sub 2} nanofibers bilayer film was fabricated for DSSC. ? The effects of HCl treated TiO{sub 2} on the performance of DSSC were investigated. ? The potential methods of improving conversion efficiency are suggested. - Abstract: The TiO{sub 2} nanoparticles/nanofibers bilayer film has been fabricated via spin coating and electrospinning followed by calcination. The TiO{sub 2} bilayer film with thickness of about 6.0 ?m is composed of anatase TiO{sub 2} phase. Dye-sensitized solar cells (DSSC) were assembled by hydrochloric acid (HCl) treated TiO{sub 2} film. The results of the photocurrent action spectra, electrochemical impedance spectroscopy (EIS), and I–V curves showed that each photovoltaic parameter of DSSC increased with the concentration of HCl increasing, and reached a maximum value and afterwards decreased. The maximum incident monochromatic photo-to-electron conversion efficiency (at 350 nm) and maximum overall conversion efficiency (?) of 0.05 M HCl treated TiO{sub 2} based DSSC were enhanced to 48.0% and 4.75%, which were respectively increased by 14% and 6.3% than those of DSSC based on untreated TiO{sub 2} film.

  10. Effect of Ti doping on high pressure behavior of BiMn{sub 2}O{sub 5}

    SciTech Connect (OSTI)

    Pandey, K. K., E-mail: kkpandey@barc.gov.in; Poswal, H. K., E-mail: kkpandey@barc.gov.in; Sharma, Surinder M. [High Pressure and Synchrotron Radiation Physics Division, Bhabha Atomic Research Centre, Trombay, Mumbai 40008 (India); Kumar, Ravi [Centre for Materials Science and Engineering, National Institute of Technology, Hamirpur-177005 (India)

    2014-04-24T23:59:59.000Z

    Our high pressure x-ray diffraction studies on BiMn{sub 1.5}Ti{sub 0.5}O{sub 5} show iso-structural phase transition above 12 GPa similar to the one observed in undoped BiMn{sub 2}O{sub 5}; however anisotropic compressional behavior is found to be more enhanced in the doped case. Unlike undoped system, an anomalous lattice expansion along c axis has been observed in BiMn{sub 1.5}Ti{sub 0.5}O{sub 5} above 12 GPa; whereas the b lattice parameter has been found to be more compressible as compared to BiMn{sub 2}O{sub 5}. As doping with Ti reduces the magnetic interactions among Mn ions, the observed changes are suggestive of having adverse magnetic implications in the observed iso-structural phase transition.

  11. Properties of TiO{sub 2}-based transparent conducting oxide thin films on GaN(0001) surfaces

    SciTech Connect (OSTI)

    Kasai, J.; Nakao, S.; Yamada, N. [Kanagawa Academy of Science and Technology (KAST), Kawasaki 213-0012 (Japan); Hitosugi, T. [Kanagawa Academy of Science and Technology (KAST), Kawasaki 213-0012 (Japan); Advanced Institute for Materials Research (WPI-AIMR), Tohoku University, Sendai 980-8577 (Japan); Moriyama, M.; Goshonoo, K. [Toyoda Gosei Co., Ltd., Nishikasugai, Aichi 452-8564 (Japan); Hoang, N. L. H. [Department of Chemistry, University of Tokyo, Tokyo 113-0033 (Japan); Hasegawa, T. [Kanagawa Academy of Science and Technology (KAST), Kawasaki 213-0012 (Japan); Department of Chemistry, University of Tokyo, Tokyo 113-0033 (Japan)

    2010-03-15T23:59:59.000Z

    Anatase Nb-doped TiO{sub 2} transparent conducting oxide has been formed on GaN(0001) surfaces using a sputtering method. Amorphous films deposited at room temperature were annealed at a substrate temperature of 500 deg. C in vacuum to form single-phase anatase films. Films with a thickness of 170 nm exhibited a resistivity of 8x10{sup -4} {Omega} cm with absorptance less than 5% at a wavelength of 460 nm. Furthermore, the refractive index of the Nb-doped TiO{sub 2} was well matched to that of GaN. These findings indicate that Nb-doped TiO{sub 2} is a promising material for use as transparent electrodes in GaN-based light emitting diodes (LEDs), particularly since reflection at the electrode/GaN boundary can be suppressed, enhancing the external quantum efficiency of blue LEDs.

  12. Taught degree MA in Film Studies

    E-Print Network [OSTI]

    Sussex, University of

    in The Times Good University Guide 2013, in the top 15 in the UK in The Complete University Guide 2014 and Media (p123) MA in International Journalism (p113) MA in Journalism and Documentary Practice (p113) MA in Journalism and Media Studies (p113) MA in Media and Cultural Studies (p123) MA in Media Practice

  13. ESR study on the visible photocatalytic mechanism of nitrogen-doped novel TiO{sub 2}

    SciTech Connect (OSTI)

    Zhang Jiwei [Laboratory of Special Functional Materials, Henan University, Kaifeng 475004 (China); Jin Zhensheng, E-mail: jinzhensheng@henu.edu.cn [Laboratory of Special Functional Materials, Henan University, Kaifeng 475004 (China); Feng Caixia; Yu Laigui; Zhang Jingwei; Zhang Zhijun [Laboratory of Special Functional Materials, Henan University, Kaifeng 475004 (China)

    2011-11-15T23:59:59.000Z

    The visible photocatalytic mechanism of nitrogen-doped novel TiO{sub 2} was studied by means of electron spin resonance spectroscopy (ESR). It was found that, under visible light irradiation, the concentration of single-electron-trapped oxygen vacancy (SETOV, V{sub o}{sup {center_dot}}) of novel TiO{sub 2} remained unchanged, but that of nitrogen-doped novel TiO{sub 2} increased and returned to original state when the light was turned off. This implies that, aside from V{sub o}{sup {center_dot}} in bulk of nitrogen-doped novel TiO{sub 2}, oxygen vacancy without trapped electron (V{sub o}{sup {center_dot}{center_dot}}) was formed on its surface. V{sub o}{sup {center_dot}{center_dot}} as a surface electron trap captured photogenerated electron from the bulk to generate extra V{sub o}{sup {center_dot}}, carrying out photocatalytic reaction on the surface. At the same time, nitrogen doping product NO was chemically adsorbed on the vicinity of V{sub o}{sup {center_dot}{center_dot}} and inhibited the attack of oxygen, allowing V{sub o}{sup {center_dot}{center_dot}} to remain stable in air. The synergistic action of the two kinds of active structures, i.e., bulk V{sub o}{sup {center_dot}}-NO-Ti and surface V{sub o}{sup {center_dot}{center_dot}}-NO-Ti, accounted for the visible photocatalytic activity of N-doped novel TiO{sub 2}. - Graphical abstract: Synergistic action is realized between (V{sub o}{sup {center_dot}}){sub bulk} and (V{sub o}{sup {center_dot}{center_dot}}){sub surf} in the presence of active structures (V{sub o}{sup {center_dot}}){sub bulk}-NO-Ti and (V{sub o}{sup {center_dot}{center_dot}}){sub surf} -NO-Ti. Research Highlights: > The origin of visible photocatalytic activity of the N-TiO{sub 2} was studied by ESR. > (V{sub o}{sup {center_dot}}){sub bulk} and (V{sub o}{sup {center_dot}{center_dot}}){sub surf} formed in N-TiO{sub 2}. > (V{sub o}{sup {center_dot}}){sub bulk} and (V{sub o}{sup {center_dot}{center_dot}}){sub surf} show a synergistic effect in visible photocatalytic. > TiO{sub 2} did not contain (V{sub o}{sup {center_dot}{center_dot}}){sub surf}, so no visible photocatalytic activity.

  14. Copper deposition on TiO{sub 2} from copper(II)hexafluoroacetylacetonate

    SciTech Connect (OSTI)

    Rayner, David G.; Mulley, James S.; Bennett, Roger A. [Department of Chemistry, University of Reading, Reading RG66AD (United Kingdom)

    2013-01-15T23:59:59.000Z

    The authors have studied the adsorption of Cu{sup II}(hfac){sub 2} on the surface of a model oxide system, TiO{sub 2}(110), and probed the molecular stability with respect to thermal cycling, using atomic scale imaging by scanning tunneling microscopy supported by x-ray photoemission spectroscopy. They find that at 473 K, the adsorbed metal-organic molecules begin to dissociate and release Cu atoms which aggregate and form Cu nanoparticles. These Cu nanoparticles ripen over time and the size (height) distribution develops into a bimodal distribution. Unlike other organometallic systems, which show a bimodal distribution due to enhanced nucleation or growth at surface step edges, the nanoparticles do not preferentially form at steps. The reduced mobility of the Cu islands may be related to the co-adsorbed ligands that remain in very small clusters on the surface.

  15. Passivation and anodic oxidation of duplex TiN coating on stainless steel

    SciTech Connect (OSTI)

    Rudenja, S.; Pan, J.; Wallinder, I.O.; Leygraf, C.; Kulu, P.

    1999-11-01T23:59:59.000Z

    The passivation and anodic oxidation of duplex TiN coatings deposited by arc ion plating onto prenitrided AISI 304 stainless steel have been studied by potentiodynamic polarization, electrochemical impedance spectroscopy, and Mott-Schottky measurements in 0.1 M H{sub 2}SO{sub 4} + 0.05 M HCl. The chemical composition of the oxidized surface film atop TiN was analyzed by X-ray photoelectron spectroscopy. Up to 1.2 V/SHE the TiN coating exhibits passive behavior, which is attributed to the formation of a TiO{sub 2}-like film of nanometer thickness which grows linearly with anodic potential at a rate of 2.4 nm/V. Above 1.2 V/SHE enhanced anodic oxidation of TiN is observed at a rate of 17.7 nm/V, and the overall corrosion performance is governed both by the oxidized TiN coating and by a metallic Ti interlayer atop the nitrided stainless steel substrate. At all potentials the TiO{sub 2} film is characterized by relatively high donor densities and is, furthermore, terminated by a hydroxylated surface.

  16. Effect of the Presence of Iodide on the Electron Injection Dynamics of Dye-Sensitized TiO2-Based Solar Cells

    E-Print Network [OSTI]

    McCusker, James K.

    dynamics of dye-sensitized TiO2-based solar cells have been investigated to determine the effectsEffect of the Presence of Iodide on the Electron Injection Dynamics of Dye-Sensitized TiO2-Based Solar Cells Amanda L. Smeigh, Jordan E. Katz, Bruce S. Brunschwig,*,,§ Nathan S. Lewis,*, and James K

  17. Synergistic effect of V/N codoping by ion implantation on the electronic and optical properties of TiO{sub 2}

    SciTech Connect (OSTI)

    Xu, Jinxia [Department of Physics and Center for Ion Beam Application, Wuhan University, Wuhan 430072 (China); School of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068 (China); Chen, Chi; Miao, Ling [School of Optical and Electronic Information, Huazhong University of Science and Technology, Wuhan 430074 (China); Xiao, Xiangheng, E-mail: xxh@whu.edu.cn; Liao, Lei; Wu, Wei; Cai, Guangxu; Liu, Yong; Dai, Zhigao; Ren, Feng; Jiang, Changzhong [Department of Physics and Center for Ion Beam Application, Wuhan University, Wuhan 430072 (China); Mei, Fei [School of Electrical and Electronic Engineering, Hubei University of Technology, Wuhan 430068 (China); Stepanov, Andrey L. [Kazan Physical-Technical Institute, Russian Academy of Sciences, Kazan 420029 (Russian Federation); Liu, Jiarui [Texas Center for Superconductivity, University of Houston, 4800 Calhoun Road, Houston, Texas 77004 (United States)

    2014-04-14T23:59:59.000Z

    Performance of the material depends directly on the electronic and energy band structure, to improve the photoactivity of TiO{sub 2} and decrease carrier recombination centers induced by monodoping, the TiO{sub 2} thin film has been modified with V and N codopants by ion implantation for tailing and controlling the electronic structure and energy band structure. Compared to monodopant, codopants of V and N exhibit a synergistic effect in the photoactivity enhancement of TiO{sub 2}. X-ray photoelectron spectroscopy (XPS) studies demonstrate that the implanted V and N ions are introduced into the lattice of TiO{sub 2} through V and N substituting Ti and O, respectively. The electronic structure of V/N codoped TiO{sub 2} was calculated by First-principles calculations based on density-functional theory, the results show the band edges of TiO{sub 2} can be tailored by V and N codopants. UV-vis spectra consistently show the absorption edge of V/N codoped TiO{sub 2} film is widen to visible light region. More importantly, the photoactivity of TiO{sub 2} film has been significantly improved after V/N codoping. The enhanced photocatalytic performance is believed to be due to the V and N codopants induced synergistic effect that not only enhances the absorption of visible light but also promotes the separation of photogenerated electrons and holes in TiO{sub 2}. Besides, there exists an optimum for V/N ions implantation fluence. The capability of improving TiO{sub 2} photoactivity by V/N codoping could open up new opportunities in the development of highly efficient photocatalysts and photoelectrodes for solar energy and environmental applications.

  18. Test of a NbTi Superconducting Quadrupole Magnet Based on Alternating Helical Windings

    SciTech Connect (OSTI)

    Caspi, S.; Trillaud, F.; Godeke, A.; Dietderich, D.; Ferracin, P.; Sabbi, G.; Giloux, C.; Perez, J. G.; Karppinen, M.

    2009-08-16T23:59:59.000Z

    It has been shown that by superposing two solenoid-like thin windings, that are oppositely skewed (tilted) with respect to the bore axis, the combined current density on the surface is cos({theta})-like and the resulting magnetic field in the bore is a pure dipole field. Following a previous test of such a superconducting dipole magnet, a quadrupole magnet was designed and built using similar principles. This paper describes the design, construction and test of a 75 mm bore 600 mm long superconducting quadrupole made with NbTi wire. The simplicity of the design, void of typical wedges, end-spacers and coil assembly, is especially suitable for future high field insert coils using Nb{sub 3}Sn as well as HTS wires. The 3 mm thick coil reached 46 T/m but did not achieve its current plateau.

  19. FURTHER OBSERVATIONS ON V-4Cr-4Ti PRESSURIZED CREEP TUBES

    SciTech Connect (OSTI)

    Gelles, David S.; Kurtz, Richard J.; Toloczko, Mychailo B.; Thomas, Larry E.

    2006-03-01T23:59:59.000Z

    Further observations are provided for pressurized thermal creep tubes of V-4Cr-4Ti examined following testing in the range 650 to 800°C for tests lasting up to ~104 h. Precipitate particles have been analyzed by EELS to define interstitial contents, and are shown to be either C or O rich with only minor N contents. Grain shape aspect ratios as a function of strain have been measured and these data shows shape change as a result of effective mid-wall strains as high as 12.7%. Deformation mechanisms are considered to explain Newtonian viscous flow response at 800°C below effective midwall stresses of 70 MPa, and it is concluded that grain boundary sliding probably is the predominant mechanism based on the microstructural information presented here, but there is evidence that Harper-Dorn creep may also be a contributing creep mechanism under these conditions.

  20. Final Exam for MA 265

    E-Print Network [OSTI]

    The Final Exam For MA 265: Fall 2002. Date: Thursday, December 12, 2002. Time: 3:20 - 5:20 pm. Room: Lambert Fieldhouse, or check the Online Catalog of

  1. MA 16100 Ground Rules & Grading Policy

    E-Print Network [OSTI]

    2015-01-04T23:59:59.000Z

    Course Syllabus - MA 16100, Spring 2015. Course Web Page: Check this page www.math.purdue.edu/MA161 (Click here). There is also a detailed Daily ...

  2. A novel 3D structure composed of strings of hierarchical TiO{sub 2} spheres formed on TiO{sub 2} nanobelts with high photocatalytic properties

    SciTech Connect (OSTI)

    Jiang, Yongjian [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Li, Meicheng, E-mail: mcli@ncepu.edu.cn [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China); Suzhou Institute, North China Electric Power University, Suzhou 215123 (China); Song, Dandan; Li, Xiaodan; Yu, Yue [State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, School of Renewable Energy, North China Electric Power University, Beijing 102206 (China)

    2014-03-15T23:59:59.000Z

    A novel hierarchical titanium dioxide (TiO{sub 2}) composite nanostructure with strings of anatase TiO{sub 2} hierarchical micro-spheres and rutile nanobelts framework (TiO{sub 2} HSN) is successfully synthesized via a one-step hydrothermal method. Particularly, the strings of hierarchical spheres are assembled by very thin TiO{sub 2} nanosheets, which are composed of highly crystallized anatase nanocrystals. Meanwhile, the HSN has a large surface area of 191 m{sup 2}/g, which is about 3 times larger than Degussa P25. More importantly, the photocatalytic activity of HSN and P25 were evaluated by the photocatalytic oxidation decomposition of methyl orange (MO) under UV light illumination, and the TiO{sub 2} HSN shows enhanced photocatalytic activity compared with Degussa P25, as result of its continuous hierarchical structures, special conductive channel and large specific surface area. With these features, the hierarchical TiO{sub 2} may have more potential applications in the fields of dye-sensitized solar cells and lithium ion batteries. -- Graphical abstract: Novel TiO{sub 2} with anatase micro-spheres and rutile nanobelts is synthesized. Enhanced photocatalysis is attributed to hierarchical structures (3D spheres), conductive channel (1D nanobelts) and large specific surface area (2D nanosheet). Highlights: • The novel TiO{sub 2} nanostructure (HSN) is fabricated for the first time. • HSN is composed of strings of anatase hierarchical spheres and rutile nanobelt. • HSN presents a larger S{sub BET} of 191 m{sup 2}/g, 3 times larger than the Degussa P25 (59 m{sup 2}/g). • HSN owns three kinds of dimensional TiO{sub 2} (1D, 2D and 3D) simultaneously. • HSN exhibits better photocatalytic performance compared with Degussa P25.

  3. Effect of flux addition on the microstructure and hardness of TiC-reinforced ferrous surface composite layers fabricated by high-energy electron beam irradiation

    SciTech Connect (OSTI)

    Choo, S.H.; Lee, S.; Kwon, S.J.

    1999-12-01T23:59:59.000Z

    Surface composites reinforced with TiC particulates were fabricated by high-energy electron-beam irradiation. In order to investigate the effects of flux addition on the TiC dispersion in surface composite layers, four kinds of powder mixtures were made by mixing TiC with 5, 10, 20, and 40 wt% of the flux components (MgO-CaO). To fabricate TiC-reinforced surface composites, the TiC-flux mixtures were deposited evenly on a plain carbon steel substrate, which was subjected to electron-beam irradiation. Microstructural analysis was conducted using X-ray diffraction and Moessbauer spectroscopy as well as optical and scanning electron microscopy. The microstructure of the surface composites was composed of a melted region, an interfacial region, a coarse-grained heat-affected zone (HAZ), a fine-grained HAZ, and an unaltered original substrate region. TiC agglomerates and residual pores were found in the melted region of materials processed without flux, but the number of agglomerates and pores are significantly decreased in materials processed with a considerable amount of flux. As a result of irradiation, TiC particles were homogeneously distributed throughout the melted region of 2.5 mm in thickness, whose hardness was greatly increased. The optimum flux amount, which resulted in surface composites containing homogeneously dispersed TiC particles, was found to be in the range of 10 to 20% to obtain excellent surface composites.

  4. Influences of air calcination and steam activation on microstructure and photocatalytic activity of continuous TiO{sub 2} fibers

    SciTech Connect (OSTI)

    You, Yang, E-mail: youyang0226@126.com [Department of Biological and Environmental Science, Changsha University, Hunan 410003 (China)] [Department of Biological and Environmental Science, Changsha University, Hunan 410003 (China); Zhang, Shiying [Department of Biological and Environmental Science, Changsha University, Hunan 410003 (China) [Department of Biological and Environmental Science, Changsha University, Hunan 410003 (China); Fujian Provincial Key Laboratory of Photocatalysis, State Key Laboratory Breeding Base, Fuzhou University, Fujian 350002 (China); Xu, Difa [Department of Biological and Environmental Science, Changsha University, Hunan 410003 (China)] [Department of Biological and Environmental Science, Changsha University, Hunan 410003 (China)

    2013-02-15T23:59:59.000Z

    Graphical abstract: Display Omitted Highlights: ? Effects of air calcination and steam activation on TiO{sub 2} fibers were studied. ? The photocatalytic activity was evaluated by degradation of formaldehyde. ? Steam activation promoted the anatase–rutile phase transformation. ? Steam activation decreased grain size and increased special surface area. ? Steam activation improved photocatalytic activity of TiO{sub 2} fibers. -- Abstract: Effects of air calcination and steam activation, on phase transformation, microstructure and photocatalytic activity of continuous TiO{sub 2} fibers prepared by sol–gel method were studied. The fibers were characterized by XRD, SEM, and N{sub 2} adsorption–desorption. The photocatalytic activity was evaluated by photocatalytic degradation of formaldehyde. Results showed that 100% rutile fibers heat-treated in air and steam were obtained at 800 °C and 600 °C, respectively. The anatase grain sizes and special surface areas of the fibers heat-treated at 500 °C in air and steam were 31.6 nm, 22.7 nm, 26.7 m{sup 2}/g and 32.3 m{sup 2}/g, respectively. The degradation rates of formaldehyde over the fibers heat-treated at 500 °C in air and steam were 92.3% and 98.6% after 14 h under UV irradiation, respectively. Compared with the air calcination, the steam activation promoted the anatase–rutile phase transformation, reduced the grain size, increased the special surface area, and improved photocatalytic activity of continuous TiO{sub 2} fibers.

  5. Effect of plasma CVD operating temperature on nanomechanical properties of TiC nanostructured coating investigated by atomic force microscopy

    SciTech Connect (OSTI)

    Shanaghi, Ali, E-mail: alishanaghi@gmail.com [Materials Engineering Department, Faculty of Engineering, Malayer University, P.O. Box: 95863-65719, Malayer (Iran, Islamic Republic of)] [Materials Engineering Department, Faculty of Engineering, Malayer University, P.O. Box: 95863-65719, Malayer (Iran, Islamic Republic of); Rouhaghdam, Ali Reza Sabour, E-mail: sabour01@modares.ac.ir [Surface Engineering Laboratory, Materials Engineering Department, Faculty of Engineering, Tarbiat Modares University, P.O. Box: 14115-143, Tehran (Iran, Islamic Republic of); Ahangarani, Shahrokh, E-mail: sh.ahangarani@gmail.com [Advanced Materials and Renewable Energies Department, Iranian Research Organization for Science and Technology, P.O. Box 15815-3538, Tehran (Iran, Islamic Republic of)] [Advanced Materials and Renewable Energies Department, Iranian Research Organization for Science and Technology, P.O. Box 15815-3538, Tehran (Iran, Islamic Republic of); Chu, Paul K., E-mail: paul.chu@cityu.edu.hk [Department of Physics and Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong (China)

    2012-09-15T23:59:59.000Z

    Highlights: ? The TiC{sub x} nanostructure coatings have been deposited by PACVD method. ? Dominant mechanism of growth structure at 490 °C is island-layer type. ? TiC{sub x} nanostructure coating applied at 490 °C, exhibits lowest friction coefficient. ? Young's moduli are 289.9, 400 and 187.6 GPa for 470, 490 and 510 °C, respectively. ? This higher elastic modulus and higher hardness of nanocoating obtain at 490 °C. -- Abstract: The structure, composition, and mechanical properties of nanostructured titanium carbide (TiC) coatings deposited on H{sub 11} hot-working tool steel by pulsed-DC plasma assisted chemical vapor deposition at three different temperatures are investigated. Nanoindentation and nanoscratch tests are carried out by atomic force microscopy to determine the mechanical properties such as hardness, elastic modulus, surface roughness, and friction coefficient. The nanostructured TiC coatings prepared at 490 °C exhibit lower friction coefficient (0.23) than the ones deposited at 470 and 510 °C. Increasing the deposition temperature reduces the Young's modulus and hardness. The overall superior mechanical properties such as higher hardness and lower friction coefficient render the coatings deposited at 490 °C suitable for wear resistant applications.

  6. Irradiation effects on Ti and SUS-304 membranes caused by the transmission of high-energy proton beam

    SciTech Connect (OSTI)

    Yamaguchi, S.; Nagata, S.; Takahiro, K. [Institute for materials Research, Tohoku University, Sendai 980-8577 (Japan)

    1999-06-10T23:59:59.000Z

    Ti and SUS-304 membranes are used for the window material of the electron beam processor as well as of the beam line for non-vacuum PIXE. The modification of the window materials during the passage of high-energy charged particles has been examined by experimental simulation using a high-energy proton beam. Polycrystalline Ti membrane of 5 {mu} m thick and SUS-304 membrane of 6 {mu} m thick are used as the specimens. Protons of 1 MeV energy are irradiated into the Ti and SUS-304 membranes up to the fluence of 4x10{sup 17} p/cm{sup 2}. Since the projected range of 1 MeV proton on Ti and SUS-304 is larger than 6 {mu} m, most protons can pass through the membranes. Microstructure and micro-hardness of the proton irradiated specimens are examined by SEM, XRD and Knoop hardness measurements as a function of proton fluence. The results show that the proton irradiation induced recrystallization and softening of the specimen.

  7. Conversion of holes into reducing species on surface modified small-particle TiO{sub 2}

    SciTech Connect (OSTI)

    Micic, O.I.; Ostafin, A.E.; Rajh, T.; Sabelko, J.J.; Thurnauer, M.C.; Tiede, D.M.; Zhang, Y. [Argonne National Lab., IL (United States). Chemistry Div.

    1995-03-01T23:59:59.000Z

    Complexation of colloidal titanium dioxide nanoparticles (40 {angstrom}) by cysteine as a surface derivative was investigated by electron paramagnetic resonance (EPR) and infra-red (diffusion reflectance infra-red Fourier Transform DRIFT) spectroscopies. It was found that cysteine strongly binds to the colloid surface. The authors have demonstrated with EPR spectroscopy that cysteine modifies the TiO{sub 2} surface with formation of new trapping sites where photogenerated electrons and holes are localized. Illumination of cysteine modified TiO{sub 2} at 77K resulted in formation of a sulfur centered radical observed by EPR spectroscopy at 200 K. Upon addition of lead ions, a new complex of cysteine that bridges surface titanium atoms and lead ions was detected by IR spectroscopy. Illumination of lead/cysteine modified TiO{sub 2} did not result in the formation of sulfur centered radical, but symmetrical, lattice defect type EPR signal for trapped holes was observed. However, addition of methanol to this system resulted in the formation of {center_dot}CH{sub 2}OH radical following illumination at 8.2 K. After the temperature was raised to 120 K, doubling of the signal associated with electrons trapped at particle surface (Ti(3){sub surf}) was observed. On further increase of the temperature to 200 K the EPR signal for trapped electrons disappeared as a result of the reduction of Pb{sup 2+} ions, and metallic lead was observed to precipitate. Conversion of photogenerated holes into trapped electrons due to the presence of methanol doubles the yield of trapped electrons that can reduce Pb{sup 2+}. Direct reduction of Pb{sup 2+} ions by {center_dot}CH{sub 2}OH radical on TiO{sub 2} was not detected.

  8. Effect of Aging Heat Treatments on Ni52Ti48 Shape Memory Alloy 

    E-Print Network [OSTI]

    Akin, Erhan

    2011-10-21T23:59:59.000Z

    temperatures, microstructural evolution, and shape memory behavior were investigated for a Ni52Ti48 shape memory alloy (SMA) by using differential scanning calorimetry (DSC), optical microscopy, scanning electron microscopy (SEM), and thermo-mechanical testing...

  9. UPS STUDY OF THE ADSORPTION OF OXYGEN ON REDUCED SrTi03 SURFACES

    E-Print Network [OSTI]

    Ferrer, S.

    2013-01-01T23:59:59.000Z

    Figure Captions Figure 1. UPS spectra of a reduced SrTi0 3 (Journal of Applied Physics UPS STUDY OF THE ADSORPTION OFof California. LBL 11614 UPS STUDY OF THE ADSORPTION OF

  10. Effect of ausforming via severe plastic deformation on shape memory behavior of NiTi 

    E-Print Network [OSTI]

    Kulkarni, Ajay V.

    2006-04-12T23:59:59.000Z

    In this study, Thermomechanical properties of Ti-50.8 and 50.7 at% Ni alloy severely deformed using Equal Channel Angular Extrusion (ECAE) are investigated. The aim of this study is to reveal the effects of severe plastic ...

  11. Two charged states of hydrogen on the SrTiO{sub 3}(001) surface

    SciTech Connect (OSTI)

    Takeyasu, Kotaro, E-mail: takeyasu@iis.u-tokyo.ac.jp; Fukada, Keisuke; Ogura, Shohei; Matsumoto, Masuaki; Fukutani, Katsuyuki, E-mail: fukutani@iis.u-tokyo.ac.jp [Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153–8505 (Japan)] [Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153–8505 (Japan)

    2014-02-28T23:59:59.000Z

    The effects of hydrogen exposure on the electronic structure of two types of SrTiO{sub 3}(001) surfaces, oxygen-deficient (OD) and nearly-vacancy-free (NVF) surfaces, were investigated with ultraviolet photoemission spectroscopy and nuclear reaction analysis. Upon molecular hydrogen exposure to the OD surface which reveals in-gap states at 1.3 eV below the Fermi level, the in-gap state intensity was reduced to half the initial value at a hydrogen coverage of 0.9 ± 0.7 × 10{sup 14} cm{sup ?2}. On the NVF surface which has no in-gap state, on the other hand, atomic-hydrogen exposure induced in-gap states, and the hydrogen saturation coverage was evaluated to be 3.1 ± 0.8 × 10{sup 14} cm{sup ?2}. We argue that H is positively charged as H{sup ?0.3+} on the NVF surface by being coordinated to the O atom, whereas H is negatively charged as H{sup ?} on the OD surface by occupying the oxygen vacancy site. The stability of H{sup ?} at the oxygen vacancy site is discussed.

  12. Effect of heat treatment on precipitation on V-5Cr-5Ti heat BL63

    SciTech Connect (OSTI)

    Gelles, D.S.; Li, H. [Pacific Northwest National Laboratory, Richland, WA (United States)

    1996-04-01T23:59:59.000Z

    The microstructures of V-5Cr-5Ti heat BL63 are compared following heat treatments at 1125{degrees}C for 1 h and 1125{degrees}C for 1 h followed by 890{degrees}C for 24 h. Following the 890{degrees}C treatment, precipitate density was increased due to the presence of a moderate density of highly elongated particles. Microchemical analysis showed that these particles often contained both Ti and V, some particles showed minor amounts of Si, S, and P, but it was also possible to show that these precipitates were enriched in O rather than C or N. Following the 1125{degrees}C heat treatment, only Si was found as a minor impurity in large particles, but S could be identified at grain boundaries, which were coated with a fine distribution of precipitates. The embrittlement observed is ascribed to a combination of interstitial solid solution hardening and grain boundary embrittlement, with interstitial hardening likely the dominant factor.

  13. MA 15400 ONLINE Fall 2014 Syllabus

    E-Print Network [OSTI]

    Delworth, Timothy J

    2014-09-14T23:59:59.000Z

    MA 15400 ONLINE Fall 2014 Syllabus. TEXTBOOK. COURSE WEBSITE. RECORDED LESSONS. HOMEWORK. QUIZZES. EXAMS. CALCULATORS. OFFICE ...

  14. MA 15400 ONLINE Spring 2015 Syllabus

    E-Print Network [OSTI]

    Delworth, Timothy J

    2015-01-06T23:59:59.000Z

    MA 15400 ONLINE Spring 2015 Syllabus. TEXTBOOK. COURSE WEBSITE. RECORDED LESSONS. HOMEWORK. QUIZZES. EXAMS. CALCULATORS.

  15. Taught degrees MA in International Journalism

    E-Print Network [OSTI]

    Sussex, University of

    and Film at Sussex is ranked in the top 10 places to study in the UK in The Times Good University GuideEssentials Taught degrees MA in International Journalism MA in Journalism and Documentary Practice Journalism, MA in Journalism and Documentary Practice, MA in Journalism and Media Studies IELTS 6

  16. Effect of nitrogen-doping temperature on the structure and photocatalytic activity of the B,N-doped TiO{sub 2}

    SciTech Connect (OSTI)

    Zhou, Xiaosong [School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640 (China); Peng, Feng, E-mail: cefpeng@scut.edu.c [School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640 (China); Wang, Hongjuan; Yu, Hao; Yang, Jian [School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640 (China)

    2011-01-15T23:59:59.000Z

    B,N-TiO{sub 2} photocatalysts were synthesized by boron doping firstly and subsequently nitrogen doping in NH{sub 3} at variable temperatures. The effects of the nitrogen doping temperature on the structure and photocatalytic activity of the B,N-codoped TiO{sub 2} were investigated. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), UV-vis diffuse reflectance spectrum (DRS), electron paramagnetic resonance (EPR) and X-ray photoelectron spectroscopy (XPS). The photocatalytic activity was evaluated with photocatalytic degradation of methyl orange dye (MO) under visible light and UV-visible light irradiation. The results suggested that the boron and nitrogen can be incorporated into the TiO{sub 2} lattice either interstitially or substitutionally or both, while the Ti-O-B-N structure plays a vital role in photocatalytic activity in visible light region. The optimal nitrogen doping temperature is 550 {sup o}C. Higher temperature may form many oxygen vacancies and Ti{sup 3+} species, resulting in the decrease of photocatalytic activity in visible light. -- Graphical abstract: The changes of photocatalytic activity of B,N-TiO{sub 2} with variable nitrogen doping temperatures are attributed to the transformation of surface structure and oxygen vacancies, and the Ti-O-B-N structure plays a vital role in photocatalytic activity under visible light irradiation. Display Omitted Research highlights: > B,N-TiO{sub 2} photocatalysts are synthesized by boron doping firstly and subsequently nitrogen doping in NH{sub 3} at variable temperatures. > The boron and nitrogen can be incorporated into the TiO{sub 2} lattice either interstitially or substitutionally or both. > The temperature of nitrogen doping affects the transformation of surface structure and oxygen vacancies. > The Ti-O-B-N structure plays an important role in photocatalytic activity under visible light irradiation.

  17. Site-Specific Imaging of Elemental Steps in Dehydration of Diols on TiO2(110)

    SciTech Connect (OSTI)

    Acharya, Danda P.; Yoon, Yeohoon; Li, Zhenjun; Zhang, Zhenrong; Lin, Xiao; Mu, Rentao; Chen, Long; Kay, Bruce D.; Rousseau, Roger J.; Dohnalek, Zdenek

    2013-11-26T23:59:59.000Z

    The conversion of diols on partially reduced TiO2(110) at low coverage was studied using variable-temperature scanning tunneling microscopy, temperature programmed desorption and density functional theory calculations. We find, that below ~230 K, ethane-1,2-diol and propane-1,3-diol molecules adsorb predominantly on five-fold coordinated Ti5c atoms. The dynamic equilibrium between molecularly bound and dissociated species resulting from O-H bond scission and reformation is observed. As the diols start to diffuse on the Ti5c rows above ~230 K, they dissociate irreversibly upon encountering bridging oxygen (Ob) vacancy (VO’s) defects. Two dissociation pathways, one via O-H and the other via C-O bond scission leading to identical surface intermediates, hydroxyalkoxy, Ob-(CH2)n-OH (n = 2, 3) and bridging hydroxyl, HOb, are seen. For O-H bond scission, the Ob-(CH2)n-OH is found on the position of the original VO, while for C-O scission it is found on the adjacent Ob site. Theoretical calculations suggest that the observed mixture of C-O/O-H bond breaking processes are a result of the steric factors enforced upon the diols by the second OH group that is bound to a Ti5c site. At room temperature, rich dissociation/reformation dynamics of the second, Ti5c-bound O-H leads to the formation of dioxo, Ob-(CH2)n-OTi, species. Above ~400 K, both Ob-(CH2)n-OH and Ob-(CH2)n-OTi species convert into a new intermediate, that is centered on Ob row. Combined experimental and theoretical evidence shows that this intermediate is most likely a new dioxo, Ob-(CH2)2-Ob, species. Further annealing leads to sequential C-Ob bond cleavage and alkene desorption above ~ 500 K. Simulations find that the sequential C-O bond breaking process follows a homolytic diradical pathway with the first C-O bond breaking event accompanied by a non-adiabatic electron transfer within the TiO2(110) substrate.

  18. Microsecond ramp compression of a metallic liner driven by a 5 MA current on the SPHINX machine using a dynamic load current multiplier pulse shaping

    SciTech Connect (OSTI)

    D'Almeida, T.; Lassalle, F.; Morell, A.; Grunenwald, J.; Zucchini, F.; Loyen, A. [CEA, DAM, GRAMAT, F-46500 Gramat (France)] [CEA, DAM, GRAMAT, F-46500 Gramat (France); Maysonnave, T. [International Technologies for High Pulsed Power, F-46500 Thégra (France)] [International Technologies for High Pulsed Power, F-46500 Thégra (France); Chuvatin, A. S. [Laboratoire de Physique des Plasmas, Ecole Polytechnique, F-91128 Palaiseau (France)] [Laboratoire de Physique des Plasmas, Ecole Polytechnique, F-91128 Palaiseau (France)

    2013-09-15T23:59:59.000Z

    SPHINX is a 6 MA, 1-?s Linear Transformer Driver (LTD) operated by the CEA Gramat (France) and primarily used for imploding Z-pinch loads for radiation effects studies. Among the options that are currently being evaluated to improve the generator performances are an upgrade to a 20 MA, 1-?s LTD machine and various power amplification schemes, including a compact Dynamic Load Current Multiplier (DLCM). A method for performing magnetic ramp compression experiments, without modifying the generator operation scheme, was developed using the DLCM to shape the initial current pulse in order to obtain the desired load current profile. In this paper, we discuss the overall configuration that was selected for these experiments, including the choice of a coaxial cylindrical geometry for the load and its return current electrode. We present both 3-D Magneto-hydrodynamic and 1D Lagrangian hydrodynamic simulations which helped guide the design of the experimental configuration. Initial results obtained over a set of experiments on an aluminium cylindrical liner, ramp-compressed to a peak pressure of 23 GPa, are presented and analyzed. Details of the electrical and laser Doppler interferometer setups used to monitor and diagnose the ramp compression experiments are provided. In particular, the configuration used to field both homodyne and heterodyne velocimetry diagnostics in the reduced access available within the liner's interior is described. Current profiles measured at various critical locations across the system, particularly the load current, enabled a comprehensive tracking of the current circulation and demonstrate adequate pulse shaping by the DLCM. The liner inner free surface velocity measurements obtained from the heterodyne velocimeter agree with the hydrocode results obtained using the measured load current as the input. An extensive hydrodynamic analysis is carried out to examine information such as pressure and particle velocity history profiles or magnetic diffusion across the liner. The potential of the technique in terms of applications and achievable ramp pressure levels lies in the prospects for improving the DLCM efficiency through the use of a closing switch (currently under development), reducing the load dimensions and optimizing the diagnostics.

  19. A Study of Oxygen Vacancy Formation and Annihilation in Submonolayer Coverages of TiO2 Dispersed on MCM-48

    E-Print Network [OSTI]

    Bell, Alexis

    A Study of Oxygen Vacancy Formation and Annihilation in Submonolayer Coverages of TiO2 Dispersed.932), suggesting the formation of oxygen vacancies. The fraction of Ti that could be reduced increased with TiO2 the TiO2 overlayer as the size of the titania patches increases. The amount of oxygen removed during

  20. MA 366 Info

    E-Print Network [OSTI]

    I thought that it was more useful to spend additional time on series solutions. Hence, you should ignore problems (11)-(15) on last fall's final and problems ...

  1. Level Alignment of a Prototypical Photocatalytic System: Methanol on TiO2(110)

    SciTech Connect (OSTI)

    Migani, Annapaola; Mowbray, Duncan J.; Iacomino, Amilcare; Zhao, Jin; Petek, Hrvoje

    2013-08-07T23:59:59.000Z

    Photocatalytic activity depends on the optimal alignment of electronic levels at the molecule? semiconductor interface. Establishing the level alignment experimentally is complicated by the uncertain chemical identity of the surface species. We address the assignment of the occupied and empty electronic levels for the prototypical photocatalytic system consisting of methanol on a rutile TiO2(110) surface. Using many-body quasiparticle (QP) techniques, we show that the frontier levels measured in UV photoelectron and two-photon photoemission spectroscopy experiments can be assigned to molecularly chemisorbed methanol rather than its dissociated product, the methoxy species. We find that the highest occupied molecular orbital of the methoxy species is much closer to the valence band maximum, suggesting why it is more photocatalytically active than the methanol molecule. We develop a general semiquantitative model for predicting many-body QP energies based on the electronic screening within the bulk, molecular, or vacuum regions of the wave functions at molecule?semiconductor interfaces.

  2. 1.5?MeV proton irradiation effects on electrical and structural properties of TiO{sub 2}/n-Si interface

    SciTech Connect (OSTI)

    Ishfaq, M.; Rizwan Khan, M.; Bhopal, M. F.; Nasim, F.; Ali, A.; Bhatti, A. S. [Centre for Micro and Nano Devices, Department of Physics, COMSATS Institute of Information Technology, Islamabad 44000 (Pakistan); Ahmed, I. [Accelerator Group, National Center for Physics, Islamabad (Pakistan); Bhardwaj, Sunil; Cepek, Cinzia [CNR-IOM, Laboratorio TASC, StradaStatale 14, Km 163.5, I-34149 Trieste (Italy)

    2014-05-07T23:59:59.000Z

    In this paper, we report the effect of 1.5?MeV proton beam irradiation dose on the structural and electrical properties of TiO{sub 2} thin films deposited on n–Si substrates. The formation and transformation of different TiO{sub 2} phases in the irradiated thin films were characterized by X-ray diffraction and X-ray photoelectron spectroscopy (XPS). X-ray diffraction measurements revealed that the as grown film was rich in Ti{sub 5}O{sub 9} phase and then converted to mixed phases of TiO{sub 2} (rutile and anatase) after exposure with radiation doses up to 5?×?10{sup 14} cm{sup ?2}. The XPS results revealed the formation of oxygen vacancy (negative) traps in the exposed TiO{sub 2} films, which showed strong dependence on the dose. The C-V measurements showed that proton radiations also damaged the Si substrate and created deep level defects in the substrate, which caused a shift of 0.26?±?0.01?V in the flat band voltage (V{sub FB}). I–V measurements showed that the ideality factor increased and the rectification ratio dropped with the increase in the radiation dose. The present study showed the stability of TiO{sub 2}/Si interface and TiO{sub 2} film as an oxide layer against proton radiations.

  3. Effect of ultraviolet and x-ray radiation on the work function of TiO{sub 2} surfaces

    SciTech Connect (OSTI)

    Gutmann, S. [Department of Chemistry, University of South Florida, Tampa, Florida 33620 (United States); Wolak, M. A.; Beerbom, M. M.; Schlaf, R. [Department of Electrical Engineering, University of South Florida, Tampa, Florida 33620 (United States); Conrad, M. [Department of Mechanical Engineering, University of South Florida, Tampa, Florida 33620 (United States)

    2010-05-15T23:59:59.000Z

    The work functions of nanocrystalline anatase (TiO{sub 2}) thin films and a rutile single crystal were measured using photoemission spectroscopy (PES). The nanocrystalline titanium dioxide films were deposited in-vacuum using electrospray thin film deposition. A comparison between ultraviolet photoemission spectroscopy (UPS) and low intensity x-ray photoemission spectroscopy (LIXPS) work function measurements on these samples revealed a strong, immediate, and permanent work function reduction (>0.5 eV) caused by the UPS measurements. Furthermore, it was found that regular XPS measurements also reduce the work function after exposure times ranging from seconds to minutes. These effects are similar in magnitude to artifacts seen previously on indium tin oxide (ITO) substrates characterized with XPS and UPS, and are likely related to the formation of a surface dipole through the photochemical hydroxylation of oxygen vacancies present on the TiO{sub 2} surface.

  4. MA HEAT Loan Overview

    Broader source: Energy.gov [DOE]

    Presents information on the success of Massachusetts's HEAT loan offerings and how the financing tool is funded.

  5. MA504 Real Analysis

    E-Print Network [OSTI]

    Apr 22, 2008 ... #9 Due on Mon, Apr 7: pp.165-171: 1, 2, 5, 8, 9, 10 [Solutions] #8 Due on Fri, Mar 28: pp.138-142: 1, 2, 5, 8, 11, 12 [Solutions] #7 Due on Fri, ...

  6. Surface Passivation of Nanoporous TiO2 via Atomic Layer Deposition of ZrO2 for Solid-State Dye-Sensitized Solar Cell Applications

    E-Print Network [OSTI]

    to the spiro-OMeTAD. Introduction Dye-sensitized solar cells (DSCs) based on mesoporous titania and liquidSurface Passivation of Nanoporous TiO2 via Atomic Layer Deposition of ZrO2 for Solid-State Dye-Sensitized Solar Cell Applications Tina C. Li, Ma´rcio S. Go´es,,§ Francisco Fabregat-Santiago,*, Juan Bisquert

  7. MA 692, Spring 2011

    E-Print Network [OSTI]

    Slides: Jim Demmlel's lecture notes on multigrid; Matlab codes: Jim Demmel's Multigrid codes for Poisson's equation; Video: Gilbert Strang's lecture (MIT ...

  8. MA504 Real Analysis

    E-Print Network [OSTI]

    Dec 7, 2007 ... #7 Due on Wed, Oct 17: [R], pp.98-102: 6, 20, 21, pp.138-142: 1, 2, 5 [Solutions] ... #5 Due on Fri, Sep 28: [R], pp.78-82: 7, 11(a-d), 16(a), 19, 23

  9. Effect of Ni and Co additives on phase decomposition in TiB2-WB2 solid solutions formed by induction field activated combustion synthesis

    E-Print Network [OSTI]

    Shibuya, M; Yoneda, T; Yamamoto, Y; Ohyanagi, M; Munir, Zuhair A

    2003-01-01T23:59:59.000Z

    The effect of Ni and Co additives on the phase separation ofsolution did not include additives. The (W,Ti)B 2 phase thatwhen Cr was used as an additive. The formation of borides of

  10. First Principles Study on Ta3N5:Ti3O3N2 Solid Solution As a Water-Splitting Photocatalyst

    E-Print Network [OSTI]

    Ceder, Gerbrand

    solution are predicted to be bracketing the water redox levels, so the photocatalysis process photocatalytic water splitting system based on TiO2 and Pt in 1972 by Fujishima and Honda,1,2 the photocatalysis

  11. Identification of the Active Species in Photochemical Hole Scavenging Reactions of Methanol on TiO2

    SciTech Connect (OSTI)

    Shen, Mingmin; Henderson, Michael A.

    2011-11-03T23:59:59.000Z

    Molecular and dissociative methanol adsorption species were prepared on rutile TiO2(110) surfaces to study photocatalytic oxidation of methanol in ultrahigh vacuum (UHV) using temperature-programmed desorption (TPD). Adsorbed methoxy groups (CH3O-) were found to be the photoactive form of adsorbed methanol converted to adsorbed formaldehyde and a surface OH group by hole-mediated C-H bond cleavage. These results suggest that adsorbed methoxy is the effective hole scavenger in photochemical reactions involving methanol.

  12. teachingMA351

    E-Print Network [OSTI]

    Ø For each hour of class, set aside at least 2 hours to spend on non-credit math exercises. Instructors expect students to spend an average of 2 hours outside of ...

  13. Boston, Massachusetts Location: Boston, MA

    E-Print Network [OSTI]

    Prevedouros, Panos D.

    -recovery ventilation and water-source heat pumps Each unit has fresh air ducted independently. Each residence is warmed by a heat pump that taps the Trigen Energy Corporation steam lines that run underneath the street. #12;WallsBoston, Massachusetts #12;Location: Boston, MA Building type(s): Multi-unit residential, Retail 350

  14. Stability in MaVaN Models

    E-Print Network [OSTI]

    Christopher Spitzer

    2006-06-26T23:59:59.000Z

    Mass-varying neutrino (MaVaN) models propose a source of dark energy in a new scalar field called the acceleron. Recent work has shown that nonrelativistic neutrino fields in these theories are unstable to inhomogeneous fluctuations, and form structures that no longer behave as dark energy. One might expect that in multiple-neutrino models, the lighter species could continue to act as a source for the acceleron, generating dark energy without the help of heavier species. This paper shows that by considering the evolution of the acceleron field for a large class of models, the result of any neutrino component becoming unstable is that all components become unstable within a short time on cosmological scales. An alternate model employing a second scalar field in a hybrid potential is shown to have stable MaVaN dark energy even in the presence of unstable heavier components.

  15. Site Competition During Coadsorption of Acetone with Methanol and Water on TiO2(110)

    SciTech Connect (OSTI)

    Shen, Mingmin; Henderson, Michael A.

    2011-08-02T23:59:59.000Z

    The competitive interaction between acetone and two solvent molecules (methanol and water) for surface sites on rutile TiO2(110) was studied using temperature programmed desorption (TPD). On a vacuum reduced TiO2(110) surface, which possessed ~5% oxygen vacancy sites, excess methanol displaced preadsorbed acetone molecules to weakly bound and physisorbed desorption states below 200 K, whereas acetone was stabilized to 250 K against displacement by methanol on an oxidized surface through formation of an acetone-diolate species. These behaviors of acetone differ from the competitive interactions between acetone and water in that acetone is less susceptible to displacement by water. Examination of acetone+methanol and acetone+water multilayer combinations shows that acetone is more compatible in water-ice films than in methanol-ice films, presumably because water has greater potential as a hydrogen-bond donor than does methanol. Acetone molecules displaced from the TiO2(110) surface by water are more likely to be retained in the near-surface region, having a greater opportunity to revisit the surface, than when methanol is used as a coadsorbate. This work was supported by the US Department of Energy Basic Energy Sciences' Chemical Sciences, Geosciences & Biosciences Division. Pacific Northwest National Laboratory is operated by Battelle for the US Department of Energy.

  16. Effect of strain on tunability in Ba0.60Sr0.40TiO3 thin films on PtSi substrates

    E-Print Network [OSTI]

    Alpay, S. Pamir

    Effect of strain on tunability in Ba0.60Sr0.40TiO3 thin films on Pt­Si substrates D. M. Potrepkaa, M. W. Cole, and W. D. Nothwang Weapons & Materials Research Directorate, Active Materials Research discussed the effects that postannealing in oxygen can have to overcome limits on oxygen diffusion

  17. Synthesis of visible light driven cobalt tailored Ag{sub 2}O/TiON nanophotocatalyst by reverse micelle processing for degradation of Eriochrome Black T

    SciTech Connect (OSTI)

    Hussain, Syed Tajammul, E-mail: dr_tajammul@yahoo.ca [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan); Rashid [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan) [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan); Department of Chemistry, Quaid-i-Azam University, Islamabad (Pakistan); Anjum, Dalaver [Imaging and Characterization Lab, Blg 3 L0/room 232, 4700, King Abdullah University of Science and Technology, Thuwal 23955-6900 (Saudi Arabia)] [Imaging and Characterization Lab, Blg 3 L0/room 232, 4700, King Abdullah University of Science and Technology, Thuwal 23955-6900 (Saudi Arabia); Siddiqa, Asima [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan)] [Nano Science and Catalysis Div. National Centre For Physics, Quaid-i-Azam University Complex, Islamabad 4400 (Pakistan); Badshah, Amin [Department of Chemistry, Quaid-i-Azam University, Islamabad (Pakistan)] [Department of Chemistry, Quaid-i-Azam University, Islamabad (Pakistan)

    2013-02-15T23:59:59.000Z

    Graphical abstract: Cobalt tailored Ag{sub 2}O/TiON nanophotocatalyst is synthesized using reverse micelle technique and it showed extraordinary photocatalytic activity. Display Omitted Highlights: ? TiON/Ag{sub 2}O/Co nanophotocatalyst is synthesized using microemulsion technique. ? Low temperature anatase phase and outstanding photocatlytic activity is observed. ? Effect of temperature and inert atmosphere on materials phase is investigated. ? Homogeneous dopants distribution and oxygen vacancies are examined. ? Enhancement in surface area, quantum efficiency and optical properties is observed. -- Abstract: An ultra efficient cobalt tailored silver and nitrogen co-doped titania (TiON/Ag{sub 2}O/Co) visible nanophotocatalyst is successfully synthesized using modified reverse micelle processing. Composition, phase, distribution of dopants, functional group analysis, optical properties and morphology of synthesized materials are investigated by means of X-ray diffraction (XRD), transmission electron microscopy (TEM) based techniques and others. Charge states of titanium (Ti) and silver are explored through core-loss electron energy loss spectroscopy (EELS) analysis and X ray photoelectron spectroscopy (XPS). Our characterization results showed that the synthesized nanophotocatalyst consisted of anatase phased qausispherical nanoparticles that exhibited homogeneous distribution of dopants, large surface area, high quantum efficiency and enhanced optical properties. At lower content of doped Co ions, the TiON/Ag{sub 2}O responded with extraordinary photocatalytic properties. The cobalt tailored nanophotocatalyst showed remarkable activity against Eriochrome Black T (EBT). Moreover, comparative degradation behavior of EBT with TiON, Ag{sub 2}O/TiON and Co/Ag{sub 2}O/TiON is also investigated.

  18. Study of the implosion characteristics of quasi-spherical wire arrays on the Angara-5-1 facility at currents of up to 4 MA

    SciTech Connect (OSTI)

    Aleksandrov, V. V.; Volkov, G. S.; Grabovski, E. V.; Gribov, A. N.; Gritsuk, A. N.; Laukhin, Ya. N.; Mitrofanov, K. N.; Oleinik, G. M.; Sasorov, P. V.; Frolov, I. N. [Troitsk Institute for Innovation and Fusion Research (Russian Federation)

    2012-04-15T23:59:59.000Z

    Results are presented from experimental studies of the spatial distribution of the density of matter in the central part of the discharge gap and the formation of the temporal profile of the X-ray power in the course of implosion of quasi-spherical wire arrays at discharge currents of up to 4 MA. The spatial distribution of the X-ray intensity in the central part of the discharge gap and the temporal profile of the X-ray power are used as implosion characteristics of quasi-spherical wire arrays. The quasi-spherical arrays were formed by the radial stretching of unstrained wires of initially cylindrical and conical wire arrays under the action of the electrostatic field. The temporal profile of the output X-ray pulse in the photon energy range of 0.1-1 keV is shown to depend on both the geometrical parameters of the quasi-spherical array and the longitudinal distribution of its mass. It is found that a 40% increase in the wire mass due to deposition of an additional mass in the equatorial region of a quasi-spherical array leads to a 15% increase in the average current radius of the pinch and a 30% decrease in the X-ray yield. Experiments with quasi-spherical arrays made of kapron fibers with deposited Al and Bi conducting layers were also carried out. It is demonstrated that application of such arrays makes it possible to control the profile and duration of the generated X-ray pulse by varying the mass, material, and location of the deposited layer. It is found that deposition of an additional mass in the form of a thin Bi stripe on tungsten wires near the cathode end of the array allows one to mitigate the influence of the cathode zipper effect on the pinch compression and formation of the X-ray pulse in tungsten arrays.

  19. DE-MA0002512

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy, OAPM | Department ofCommunications3 DATE:Award No. 2.

  20. DOE/MA-0517

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 1112011AT&T,Office of Policy, OAPMMilestone | DepartmentEA - 0942 E N v8 AUDIT REPORTMay 17,

  1. MaRIE Presentations

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of Science (SC)Integrated Codes |IsLove Your Home and It'll Love YouTokamak |MPCTraining5 AM

  2. Solar Energy Materials & Solar Cells 71 (2002) 261271 Photoelectric behavior of nanocrystalline TiO2

    E-Print Network [OSTI]

    Huang, Yanyi

    . A sandwich-type solar cell fabricated by this dye-sensitized nanocrystalline TiO2 film generated 6:1 mA cmÃ?2; Nanocrystalline TiO2; Dye sensitized solar cell; Terpyridyl ruthenium dyes; Photoelectrochemical solar cells unmatched performance in dye staff studied as solar cell sensitizer before 1997. Only recently, a black dye

  3. Atomic layer deposition of photoactive CoO/SrTiO{sub 3} and CoO/TiO{sub 2} on Si(001) for visible light driven photoelectrochemical water oxidation

    SciTech Connect (OSTI)

    Ngo, Thong Q.; Hoang, Son; McDaniel, Martin D.; Buddie Mullins, C.; Ekerdt, John G. [Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712 (United States)] [Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712 (United States); Posadas, Agham; Seo, Hosung; Demkov, Alexander A. [Department of Physics, The University of Texas at Austin, Austin, Texas 78712 (United States)] [Department of Physics, The University of Texas at Austin, Austin, Texas 78712 (United States); Utess, Dirk; Triyoso, Dina H. [GLOBALFOUNDRIES Dresden, Wilschdorfer Landstrasse 101, Dresden DE-01109 (Germany)] [GLOBALFOUNDRIES Dresden, Wilschdorfer Landstrasse 101, Dresden DE-01109 (Germany)

    2013-08-28T23:59:59.000Z

    Cobalt oxide (CoO) films are grown epitaxially on Si(001) by atomic layer deposition (ALD) using a thin (1.6 nm) buffer layer of strontium titanate (STO) grown by molecular beam epitaxy. The ALD growth of CoO films is done at low temperature (170–180 °C), using cobalt bis(diisopropylacetamidinate) and water as co-reactants. Reflection high-energy electron diffraction, X-ray diffraction, and cross-sectional scanning transmission electron microscopy are performed to characterize the crystalline structure of the films. The CoO films are found to be crystalline as-deposited even at the low growth temperature with no evidence of Co diffusion into Si. The STO-buffered Si (001) is used as a template for ALD growth of relatively thicker epitaxial STO and TiO{sub 2} films. Epitaxial and polycrystalline CoO films are then grown by ALD on the STO and TiO{sub 2} layers, respectively, creating thin-film heterostructures for photoelectrochemical testing. Both types of heterostructures, CoO/STO/Si and CoO/TiO{sub 2}/STO/Si, demonstrate water photooxidation activity under visible light illumination. In-situ X-ray photoelectron spectroscopy is used to measure the band alignment of the two heterojunctions, CoO/STO and CoO/TiO{sub 2}. The experimental band alignment is compared to electronic structure calculations using density functional theory.

  4. Impacts of Historical Land Use on Soil Nitrogen Cycles in Falmouth, MA and the Threat of Chronic N Amendment Demonstrated at the

    E-Print Network [OSTI]

    Vallino, Joseph J.

    , in Petersham, MA. At each site I measured: pH, C:N ratios, extractable inorganic nitrogen pools, net: Farmer and poet Wendell Berry wrote, "that the leaves are harvested/ when they have rotted into the mold of downstream water quality. Nitrogen loading to estuaries is of particular concern because of widespread

  5. On hiatus from teaching after majoring in Slavic Languages & Literature at Princeton and getting her M.A. at the Harvard Graduate

    E-Print Network [OSTI]

    her M.A. at the Harvard Graduate School of Education, Mary Koger started attending PANE events in Mary, quickly sweeping her onto its board and into service to Princeton that is still going strong more than 20 years later. Now vice president of PANE's board, she cites her involvement with PANE

  6. Final environmental impact statement/report. Volume 3. Response to comments on draft environmental impact statement/report. Northeast corridor improvement project electrification: New Haven CT to Boston, MA

    SciTech Connect (OSTI)

    NONE

    1994-10-31T23:59:59.000Z

    This document is the final environmental impact statement and final environmental impact report (FEIS/R) on the proposal by the National Railroad Passenger Corporation (Amtrak) to complete the electrification of the Northeast Corridor main line by extending electric traction from New Haven, CT, to Boston, MA. This document (Volume III) of the FEIS/R presents summaries of comments received on the DEIS/R and responses to these comments.

  7. Temperature dependence of magnetic properties of La0.7Sr0.3MnO3SrTiO3 thin films on silicon substrates

    E-Print Network [OSTI]

    Boyer, Edmond

    by a 20-nm-thick SrTiO3 001 buffer layer. X-ray diffraction and atomic force microscopy studies. INTRODUCTION Perovskite manganites RE 1-x AE xMnO3, where RE =rare earth and AE=alkaline earth formTemperature dependence of magnetic properties of La0.7Sr0.3MnO3Ã?SrTiO3 thin films on silicon

  8. Deposition dynamics and chemical properties of size-selected Ir clusters on TiO2

    E-Print Network [OSTI]

    Anderson, Scott L.

    reserved. Keywords: Iridium; Clusters; Titanium oxide; X-ray photoelectron spectroscopy; Low energy ion report a study of Irn/TiO2 samples prepared by size and energy-selected deposition of Irþ n (n ¼ 1, 2, 5 in the zero oxidation state, and there are no significant shifts in Ir 4f binding energy with cluster size

  9. MA - Office of Management - Energy Conservation Plan

    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 onYouTube YouTube Note: Since the.pdfBreaking ofOil & Gas »ofMarketing |Prepare For more(Version 3.0) | DepartmentMA

  10. Infrared spectroscopy study of adsorption and photodecomposition of formic acid on reduced and defective rutile TiO{sub 2} (110) surfaces

    SciTech Connect (OSTI)

    Mattsson, Andreas, E-mail: andreas.mattsson@angstrom.uu.se; Österlund, Lars [Department of Engineering Sciences, The Ångström Laboratory, Uppsala University, P.O. Box 534, SE-75121 Uppsala (Sweden); Hu, Shuanglin; Hermansson, Kersti [Department of Chemistry, The Ångström Laboratory, Uppsala University, P.O. Box 538, SE-75121 Uppsala (Sweden)

    2014-11-01T23:59:59.000Z

    Adsorption and photodecomposition of formic acid on rutile TiO{sub 2} (110) have been investigated with infrared reflection–absorption spectroscopy (IRRAS) employing p- and s-polarized light along the [001] and [11{sup ¯}0] crystal directions. The single crystal surfaces were prepared either by sputtering and annealing in ultrahigh vacuum (UHV) to obtain a reduced surface (r-TiO{sub 2}), or by sputtering without annealing to create a rough, highly defective surface (sp-TiO{sub 2}). Results are compared with corresponding measurements on rutile nanocrystals performed in synthetic air. IRRAS spectra obtained on r-TiO{sub 2} and rutile nanocrystals are very similar, and show that in both cases formic acid dissociates and is predominately adsorbed as a bridging bidentate formate species, and that the formate adsorption structure on the nanocrystals is dominated by interactions with majority (110) surfaces. In contrast, the IRRAS spectra on sp-TiO{sub 2} are different, with only minor spectral features associated with (110) surfaces and lost azimuthal symmetry, both of which imply changed adsorption geometry due to bonding to low-coordinated Ti atoms with lower valences. The UV-induced rate of formate photodecomposition is about 30 times higher on rutile nanocrystals in synthetic air compared with sp-TiO{sub 2} under UHV conditions, and even larger than on r-TiO{sub 2}. These differences are explained by the lack of oxygen and limited hydroxyl coverage under UHV conditions. The difference in reactivity between the r-TiO{sub 2} and sp-TiO{sub 2} surfaces is attributed to a high concentration of strongly bonded bridging bidentate formate species on the (110) surface, which lowers its reactivity. The results point to a pressure gap where the availability of molecular oxygen and the hydroxyl concentration limit the photoreactivity in UHV leading to an almost 20-fold decrease of the formate degradation rate in UHV. In contrast, the structure represented by the single crystal (110) surface is shown to capture the essential structural properties, which dictates the formic acid adsorption and adsorption structure of rutile nanocrystals.

  11. Corrosion resistance and friction of sintered NdFeB coated with Ti/TiN multilayers

    E-Print Network [OSTI]

    Volinsky, Alex A.

    Corrosion resistance and friction of sintered NdFeB coated with Ti/TiN multilayers Yuanyuan Cheng Polarization Fretting corrosion Ti/TiN multilayers were deposited on sintered NdFeB by radio frequency magnetron sputtering. The film grain size decreased with the number of multilayers in the stack. Corrosion

  12. MA-60 Org chart | Department of Energy

    Office of Environmental Management (EM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742 33 111 1,613 122Commercial602 1,39732on ArmedManufacturingJunePracticeShipping Goal |ofMA-60 Org

  13. InThrMa | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are8COaBulkTransmissionSitingProcess.pdfGetecGtel JumpCounty,Jump to: navigation,Information InSAR AtEnevaInThrMa

  14. Data Update for Paxton, MA December, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA December, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for December, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  15. Data Update for Paxton, MA November, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA November, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for November, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  16. Data Update for Paxton, MA February, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA February, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for February, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  17. Data Update for Paxton, MA January, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA January, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for January, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  18. Data Update for Paxton, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA May, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for May, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  19. Data Update for Paxton, MA September, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA September, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for September, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  20. Data Update for Paxton, MA October, 2004

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA October, 2004 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for October, 2004 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  1. Data Update for Paxton, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA June, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for June, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  2. Data Update for Paxton, MA April, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA April, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for April, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  3. Data Update for Paxton, MA October, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA October, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for October, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  4. Data Update for Paxton, MA August, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA August, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for August, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  5. Data Update for Paxton, MA September, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA September, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for September, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  6. Data Update for Paxton, MA April, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA April, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for April, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  7. Data Update for Paxton, MA October, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA October, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for October, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  8. Data Update for Paxton, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA May, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for May, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  9. Data Update for Paxton, MA November, 2004

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA November, 2004 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for November, 2004 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  10. Data Update for Paxton, MA February, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA February, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for February, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  11. Data Update for Blandford, MA October 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Blandford, MA October 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Matthew Lackner Monthly Data Summary for October 2006 This update summarizes the monthly data results for the Blandford monitoring site in Blandford, MA, at 42.223° N, 72

  12. Data Update for Paxton, MA March, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA March, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for March, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  13. Data Update for Paxton, MA August, 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA August, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for August, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  14. Data Update for Paxton, MA December, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA December, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for December, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  15. Data Update for Paxton, MA March, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA March, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for March, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  16. Data Update for Blandford, MA November 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Blandford, MA November 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Matthew Lackner Monthly Data Summary for November 2006 This update summarizes the monthly data results for the Blandford monitoring site in Blandford, MA, at 42.223° N, 72

  17. Data Update for Paxton, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA July, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for July, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  18. Data Update for Paxton, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA June, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for June, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  19. Data Update for Paxton, MA September, 2004

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA September, 2004 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for September, 2004 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  20. Data Update for Paxton, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA July, 2006 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for July, 2006 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per the WSG84

  1. Data Update for Paxton, MA January, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA January, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for January, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  2. Data Update for Paxton, MA November, 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA November, 2005 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for November, 2005 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  3. Data Update for Paxton, MA December, 2004

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Paxton, MA December, 2004 Prepared for Massachusetts Technology Collaborative, 75 North Drive, Westborough, MA 01581 By Kai Wu Monthly Data Summary for December, 2004 This update summarizes the monthly data results for the Paxton MA monitoring site at 42-18-11.6 N, 71-53-50.9 W per

  4. Influence of plasma density on the chemical composition and structural properties of pulsed laser deposited TiAlN thin films

    SciTech Connect (OSTI)

    Quiñones-Galván, J. G.; Camps, Enrique [Departamento de Física, Instituto Nacional de Investigaciones Nucleares, Apartado Postal 18-1027, México D.F. C.P. 11801 (Mexico); Muhl, S. [Instituto de Investigaciones en Materiales, UNAM, México D.F. C.P. 04510 (Mexico); Flores, M. [Departamento de Ingeniería de Proyectos, CUCEI, Universidad de Guadalajara, Apdo. Postal 307, C.P. 45101 Zapopan, Jalisco (Mexico); Campos-González, E. [Departamento de Física, CINVESTAV-IPN, Apdo. Postal 14-740, México D.F. 07360 (Mexico)

    2014-05-15T23:59:59.000Z

    Incorporation of substitutional Al into the TiN lattice of the ternary alloy TiAlN results in a material with improved properties compared to TiN. In this work, TiAlN thin films were grown by the simultaneous ablation of Ti and Al targets in a nitrogen containing reactive atmosphere. The deposit was formed on silicon substrates at low deposition temperature (200?°C). The dependence of the Al content of the films was studied as a function of the ion density of the plasma produced by the laser ablation of the Al target. The plasma parameters were measured by means of a planar Langmuir probe and optical emission spectroscopy. The chemical composition of the films was measured by energy dispersive X-ray spectroscopy. The results showed a strong dependence of the amount of aluminum incorporated in the films with the plasma density. The structural characterization of the deposits was carried out by Raman spectroscopy, X-ray diffraction, and transmission electron microscopy, where the substitutional incorporation of the Al into the TiN was demonstrated.

  5. Alternating and direct current field effects on the structure-property relationships in Na{sub 0.5}Bi{sub 0.5}TiO{sub 3}-x%BaTiO{sub 3} textured ceramics

    SciTech Connect (OSTI)

    Ge, Wenwei; Li, Jiefang; Viehland, D. [Department of Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States)] [Department of Materials Science and Engineering, Virginia Tech, Blacksburg, Virginia 24061 (United States); Maurya, Deepam; Priya, Shashank [Center for Energy Harvesting Materials and Systems (CEHMS), Bio-Inspired Materials and Devices Laboratory (BMDL), Virginia Tech, Blacksburg, Virginia 24061 (United States)] [Center for Energy Harvesting Materials and Systems (CEHMS), Bio-Inspired Materials and Devices Laboratory (BMDL), Virginia Tech, Blacksburg, Virginia 24061 (United States)

    2013-06-03T23:59:59.000Z

    The influence of alternating (ac) and direct current (dc) fields on the structural and dielectric properties of [001]{sub PC} textured Na{sub 0.5}Bi{sub 0.5}TiO{sub 3}-7%BaTiO{sub 3} (NBT-7%BT) ceramics has been investigated. X-ray diffraction measurements revealed that the depolarization at temperature T{sub d} in poled samples resulted from a tetragonal {yields} pseudo-cubic transition on heating. Moderate ac drive and dc bias had opposite influences on T{sub d}: ac drive decreased the T{sub d}, whereas dc bias increased it. These investigations suggested an effective method to expand the working temperature range of NBT-x%BT textured ceramics to a high temperature.

  6. The influence of temperature on the color of TiO{sub 2}:Cr pigments

    SciTech Connect (OSTI)

    Gomes Vieira, Fagner Ticiano; Silva Melo, Danniely [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil); Jackson Guedes de Lima, Severino [LSR, Departamento de Engenharia Mecanica, Universidade Federal da Paraiba, Joao Pessoa, PB (Brazil); Longo, Elson [CMDMC-LIEC, Instituto de Quimica, Universidade Estadual Paulista, Araraquara, SP (Brazil); Paskocimas, Carlos Alberto [Departamento de Engenharia Mecanica, Universidade Federal do Rio Grande do Norte, Natal, RN (Brazil); Silva Junior, Wilson [Icra Produtos para Ceramica, Mogi Guacu, SP (Brazil); Gouveia de Souza, Antonio [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil); Garcia dos Santos, Ieda Maria [LACOM, Departamento de Quimica, Centro de Ciencias Exatas e da Natureza, Universidade Federal da Paraiba, Cidade Universitaria, Campus I, CEP:58059 900, Joao Pessoa, PB (Brazil)], E-mail: ieda@quimica.ufpb.br

    2009-05-06T23:59:59.000Z

    TiO{sub 2}:Cr brown pigments were prepared via a polymeric precursor derived from the Pechini method. The pigments were analyzed by infrared spectroscopy, X-ray diffraction, ultraviolet-vis spectroscopy, and colorimetry. The increase of the calcination temperature from 700 to 1000 deg. C led to a decrease in the L* values, corresponding to darkening of the pigments. The pigments obtained in this work are darker than those produced by a solid-state reaction method reported before. The change in the pigment color is due to the anatase-rutile phase transition, which leads to a shift in the charge transfer bond (Ti{sup 4+} {r_reversible} O{sup 2-}) due to a change in the crystal field around the chromophore ions. Moreover, the oxidation state of chromium was observed to change, and this also alters the color of the pigments.

  7. Effects of Ti substitution on structural and magnetic properties of Zn–Mn ferrospinels

    SciTech Connect (OSTI)

    Patil, R.P., E-mail: raj_rbm_raj@yahoo.com [Department of Chemistry, Shivaji University, Kolhapur 416004 (India); Patil, N.M. [Department of Chemistry, Shivaji University, Kolhapur 416004 (India); Sasikala, R. [Chemistry Division, Bhabha Atomic Research Centre, Mumbai 400085 (India); Hankare, P.P., E-mail: p_hankarep@rediffmail.com [Department of Chemistry, Shivaji University, Kolhapur 416004 (India); Delekar, S.D. [Department of Chemistry, Dr. Babasaheb Ambedkar Marathwada University, Sub-campus Osmanabad, 413501 (India)

    2013-05-15T23:59:59.000Z

    Highlights: ? Novel system ZnMn{sub 1?x}Ti{sub x}FeO{sub 4} synthesized by sol–gel route. ? Nanocrystalline materials. ? Magnetic materials. - Abstract: Nanocrystalline ZnMn{sub 1?x}Ti{sub x}FeO{sub 4} (1.0 ? x ? 0) ferrites were prepared by sol–gel route. Formation of single phase cubic spinel structure for all the compositions was confirmed from their X-ray diffraction patterns. The lattice parameter shows an increasing trend with the increase in Ti content. These ferrite samples existed as crystalline nanoparticles of about 30–40 nm size as observed from transmission electron microscopy (TEM) technique. EDAX analysis indicated that the concentration of different elements in different compositions is in close agreement with the starting concentrations. Infrared spectra showed two main absorption bands in the range 400–800 cm{sup ?1} arising due to tetrahedral (A) and octahedral (B) stretching vibrations. The magnetic studies indicated that, the ferrimagnetic behavior increases with titanium substitution.

  8. Hierarchical heterogeneity at the CeOx-TiO? interface: Electronic and geometric structural influence on the photocatalytic activity of oxide on oxide nanostructures

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

    Luo, Si [Brookhaven National Lab. (BNL), Upton, NY (United States); Nguyen-Phan, Thuy-Duong [Brookhaven National Lab. (BNL), Upton, NY (United States); Johnston-Peck, Aaron C. [Brookhaven National Lab. (BNL), Upton, NY (United States); Barrio, Laura [CSIC - Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Sallis, Shawn [Binghamton Univ., NY (United States); Arena, Dario A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Kundu, Shankhamala [Brookhaven National Lab. (BNL), Upton, NY (United States); Xu, Wenqian [Brookhaven National Lab. (BNL), Upton, NY (United States); Piper, Louis F. J. [Binghamton Univ., NY (United States); Stach, Eric A. [Brookhaven National Lab. (BNL), Upton, NY (United States); Polyansky, Dmitry E. [Brookhaven National Lab. (BNL), Upton, NY (United States); Fujita, Etsuko [Brookhaven National Lab. (BNL), Upton, NY (United States); Rodriguez, José A. [Brookhaven National Lab. (BNL), Upton, NY (United States); CSIC - Inst. de Catalisis y Petroleoquimica, Madrid (Spain); Senanayake, Sanjaya D. [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2015-01-27T23:59:59.000Z

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravel the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.

  9. Hierarchical heterogeneity at the CeOx-TiO? interface: Electronic and geometric structural influence on the photocatalytic activity of oxide on oxide nanostructures

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

    Luo, Si; Nguyen-Phan, Thuy-Duong; Johnston-Peck, Aaron C.; Barrio, Laura; Sallis, Shawn; Arena, Dario A.; Kundu, Shankhamala; Xu, Wenqian; Piper, Louis F. J.; Stach, Eric A.; et al

    2015-01-27T23:59:59.000Z

    Mixed oxide interfaces are critical for delivering active components of demanding catalytic processes such as the photo-catalytic splitting of water. We have studied CeOxTiO? catalysts with low ceria loadings of 1 wt%, 3 wt% and 6 wt% that were prepared with wet impregnation methods to favor a strong interaction between CeOx and TiO?. In these materials the interfaces between CeOx-TiO? have been sequentially loaded (1%, 3% and 6%), with and without Pt (0.5 wt%). The structure and properties of the catalysts were characterized using several X-ray and electron based techniques including XRD, XPS, UPS, NEXAFS, UV-Vis and HR-STEM/STEM-EELS, to unravelmore »the local morphology, bulk structure, surface states and electronic structure. The combination of all these techniques allow us to analyze in a systematic way the complete structural and electronic properties that prevail at the CeOx-TiO? interface. Fluorite structured nano crystallites of ceria on anatase-structured titania were identified by both XRD and NEXAFS. A sequential increasing of the CeOx loading led to the formation of clusters, then plates and finally nano particles in a hierarchical manner on the TiO? support. The electronic structures of these catalysts indicate that the interaction between TiO? and CeO? is closely related to the local morphology of nanostructured CeO?. Ce³? cations were detected at the surface of CeO? and at the interface of the two oxides. In addition, the titania is perturbed by the interaction with ceria and also with Pt. The photocatalytic activity for the splitting of H?O using UV light was measured for these materials and correlated with our understanding of the electronic and structural properties. Optimal catalytic performance and photo response results were found for the 1 wt% CeOx-TiO? catalyst where low dimensional geometry of the ceria provided ideal electronic and geometrical properties. The structural and electronic properties of the interface were critical for the photocatalytic performance of this mixed-oxide nanocatalyst system.« less

  10. Epitaxial growth and thermal stability of Fe{sub 4}N film on TiN buffered Si(001) substrate

    SciTech Connect (OSTI)

    Xiang, H.; Shi, F.-Y.; Voyles, P. M.; Chang, Y. A. [Department of Materials Science and Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States); Rzchowski, M. S. [Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

    2011-04-01T23:59:59.000Z

    Epitaxial Fe{sub 4}N thin films were grown on TiN buffered Si(001) substrate by dc reactive sputtering deposition at different substrate temperatures. Fe{sub 4}N films epitaxially grew on TiN within the substrate temperature range from 250 to 350 deg. C. Lower than 250 deg. C there will be some other Fe{sub x}N compounds formed and higher than 400 deg. C there will be only Fe left. Fe{sub 4}N is metastable and the postannealing process in vacuum will decompose Fe{sub 4}N film to Fe. However, introducing 30% N{sub 2} in the postannealing atmosphere can stabilize the Fe{sub 4}N up to 350 deg. C in the (Ar,N{sub 2}) gas mixture. The surface roughness of the epitaxial Fe{sub 4}N films decreases with film thickness. There is in-plane biaxial magnetic anisotropy of epitaxial Fe{sub 4}N(001) on Si(001) with the [100] easy direction.

  11. Kinetics of ethanol oxidation on electroless Ni-P/SnO{sub 2}/Ti electrodes in KOH solutions

    SciTech Connect (OSTI)

    Lo, Y.L.; Hwang, B.J. [National Taiwan Inst. of Technology, Taipei (Taiwan, Province of China). Dept. of Chemical Engineering

    1995-02-01T23:59:59.000Z

    The electrolytic oxidation of ethanol was investigated on the electroless Ni-P/SnO{sub 2}/Ti electrodes in 1M KOH. The mechanisms of ethanol oxidation on the electrode were studied via cyclic voltammetry and polarization curves. The kinetic equations were derived, and the kinetic parameters were obtained from a comparison of experimental results and the kinetic equations. The redox reaction of the nickel electrode in the alkaline-solution is reversible, and the rate constants related to this reaction, k{sub 1} as well as k{sub {minus}1}, are functions of applied potential. Ethanol oxidation on the electroless Ni-P/SnO{sub 2}/Ti is through a chemical reaction with a rate constant k{sub c1}. These rate constants were determined from the current-potential curves and the kinetic model at various concentrations of ethanol. The rate constants for electrochemical reaction could be expressed as k{sub 1} (E) = 8.892 {times} 10{sup {minus}13} exp (0.6525FE/RT) s{sup {minus}1}, k{sub {minus}1} (E) = 8,034 {times} 10{sup {minus}6} exp ({minus}0.3475FE/RT) where E was the applied potential vs. Ag/AgCl, and the chemical reaction rate constant (k{sub cl}) was 5.822 {times} 10{sup {minus}6} dm{sup 3}/mol {times} s.

  12. ISO/SWS observations of SN 1987A: II. A refined upper limit on the mass of Ti-44 in the ejecta of SN 1987A

    E-Print Network [OSTI]

    P. Lundqvist; C. Kozma; J. Sollerman; C. Fransson

    2001-05-23T23:59:59.000Z

    ISO/SWS observations of SN 1987A on day 3425 show no emission in [Fe I] 24.05 microns and [Fe II] 25.99 microns down to the limits of roughly 0.39 Jy and 0.64 Jy, respectively. Assuming a homogeneous distribution of Ti-44 inside 2000 km/s and negligible dust cooling, we have made time dependent theoretical models to estimate an upper limit on the mass of ejected Ti-44. Assessing various uncertainties of the model, and checking the late optical emission it predicts, we obtain an upper limit of 1.1EE-4 solar masses. This is lower than in our previous estimate using other ISO data, and we compare our new result with other models for the late emission, as well as with expected yields from explosion models. We also show that steady-state models for the optical emission are likely to overestimate the mass of ejected Ti-44. The low limit we find for the mass of ejected Ti-44 could be higher if dust cooling is important. A direct check on this is provided by the gamma-ray emission at 1.157 Mev as a result of the radioactive decay of Ti-44.

  13. A l i f Eiff l T (CEE 4404 C A l i f S I)Analysis of Eiffel Tower (CEE 4404 Computer Analysis of Structures I)Analysis of Eiffel Tower (CEE 4404 Computer Analysis of Structures I) A d M h H hil P l Li M Ti GAnanda Mehta, Harshil Patel, Li Ma, Tian GaoAnan

    E-Print Network [OSTI]

    Virginia Tech

    A l i f Eiff l T (CEE 4404 C A l i f S I)Analysis of Eiffel Tower (CEE 4404 Computer Analysis of Structures I)Analysis of Eiffel Tower (CEE 4404 Computer Analysis of Structures I) A d M h H hil P l Li M Ti s s g S 000Introduction 18 4¡ã 18 4 ã The Eiffel tower the global icon of France is an iron Assumptions

  14. Taught degree MA in Film Studies: Global Film Cultures

    E-Print Network [OSTI]

    Sussex, University of

    10 places to study in the UK in The Complete University Guide 2012-13 and The Times Good UniversityD in Film Studies Related degrees MA in Creative Media Practice (p119) MA in Digital Documentary (p120) MA in Digital Media (p121) MA in Gender and Media (p121) MA in Journalism and Documentary Practice (p111) MA

  15. Electric field effects on spin accumulation in Nb-doped SrTiO{sub 3} using tunable spin injection contacts at room temperature

    SciTech Connect (OSTI)

    Kamerbeek, A. M.; Vries, E. K. de; Wees, B. J. van; Banerjee, T., E-mail: T.Banerjee@rug.nl [Physics of Nanodevices, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen (Netherlands); Dankert, A.; Dash, S. P. [Department of Microtechnology and Nanoscience, Chalmers University of Technology, SE-41296 Gothenburg (Sweden)

    2014-05-26T23:59:59.000Z

    We report on features in charge transport and spin injection in an oxide semiconductor, Nb-doped SrTiO{sub 3}. This is demonstrated using electrically tunable spin injection contacts which exploit the large electric field at the interface and its interplay with the relative permittivity of the semiconductor. We realize spin accumulation in Nb-doped SrTiO{sub 3} which displays a unique dependence of the spin lifetime with bias polarity. These findings suggest a strong influence of the interface electric field on the charge transport as well as on spin accumulation unlike in conventional semiconductors and opens up promising avenues in oxide spintronics.

  16. On the consistency of QCBED structure factor measurements for TiO2 (Rutile)

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

    Spence, J.C.H [Arizona State University; Friis, J. [Norwegian University of Science and Technology; Zuo, J.M [University of Illinois, Urbana, IL; Jiang, B.

    2003-10-01T23:59:59.000Z

    The same Bragg reflection in TiO2 from twelve different CBED patterns (from different crystals, orientations and thicknesses) are analysed quantitatively in order to evaluate the consistency of the QCBED method for bond-charge mapping. The standard deviation in the resulting distribution of derived X-ray structure factors is found to be an order of magnitude smaller than that in conventional X-ray work , and the standard error (0.026% for FX(110)) is slightly better than obtained by the X-ray Pendellosung method applied to silicon. This is sufficiently accuracy to distinguish between atomic, covalent and ionic models of bonding. We describe the importance of extracting experimental parameters from CCD camera characterization, and of surface oxidation and crystal shape. The current experiments show that the QCBED method is now a robust and powerful tool for low order structure factor measurement, which does not suffer from the large extinction (multiple scattering) errors which occur in inorganic X-ray crystallography, and may be applied to nanocrystals. Our results will be used to understand the role of d electrons in the chemical bonding of TiO2.

  17. On the Consistency of QCBED Structure Factor Measurements for TiO2 (Rutile)

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

    Jiang, Bin; Zuo, Jian-Min; Friis, Jesper; Spence, John C.H.

    2003-10-01T23:59:59.000Z

    The same Bragg reflection in TiO2 from twelve different CBED patterns (from different crystals, orientations and thicknesses) are analysed quantitatively in order to evaluate the consistency of the QCBED method for bond-charge mapping. The standard deviation in the resulting distribution of derived X-ray structure factors is found to be an order of magnitude smaller than that in conventional X-ray work, and the standard error (0.026% for FX(110)) is slightly better than obtained by the X-ray Pendellosung method applied to silicon. This is sufficiently accuracy to distinguish between atomic, covalent and ionic models of bonding. We describe the importance of extractingmore »experimental parameters from CCD camera characterization, and of surface oxidation and crystal shape. The current experiments show that the QCBED method is now a robust and powerful tool for low order structure factor measurement, which does not suffer from the large extinction (multiple scattering) errors which occur in inorganic X-ray crystallography, and may be applied to nanocrystals. Our results will be used to understand the role of d electrons in the chemical bonding of TiO2.« less

  18. Oxynitrided Surface Layer Produced On Ti6Al4V Titanium Alloy Under Low Temperature Glow Discharge Conditions For Medical Applications

    SciTech Connect (OSTI)

    Wierzchon, T.; Ossowski, M.; Borowski, T. [Faculty of Materials Science and Engineering, Warsaw University of Technology, 141 Woloska Str, 02-507 Warsaw (Poland); Morgiel, J. [Institute of Metallurgy and Materials Science, Polish Academy of Science, 25 Reymonta Str, 30-059 Cracow (Poland); Czarnowska, E. [Department of Pathology, The Children's Memorial Health Institute, 20 Dzieci Polskich Av., 04-730 Warsaw (Poland)

    2011-01-17T23:59:59.000Z

    In spite that titanium oxides increase biocompatibility of titanium implants but their functional life is limited due to the problems arising from brittles and metalosis. Therefore technology, that allow to produce composite surface layer with controlled microstructure, chemical and phase composition and surface morphology on titanium alloy and eliminates the oxides disadvantages has been existing till now is searched. The requirements of titanium and its alloys implants can be fulfill by the low-temperature glow discharge assisted oxynitriding.The paper describes the surface layer of TiO{sub 2}+TiN+Ti{sub 2}N+{alpha}Ti(N) type produced at temperature 680 deg. C that preserves mechanical properties of titanium alloy Ti6Al4V. Characteristics of produced diffusion multi-phase surface layers in range of phase composition, microstructure (SEM, TEM, XRD) and its properties, such as frictional wear resistance are presented. The biological properties in dependency to the applied sterilization method are also analyzed.Properties of produced surface layers are discussed with reference to titanium alloy. The obtained data show that produced surface layers improves titanium alloy properties both frictional wear and biological. Preliminary in vitro examinations show good biocompatibility and antithrombogenic properties.

  19. Interfacial mode coupling as the origin of the enhancement of Tc in FeSe films on SrTiO3

    SciTech Connect (OSTI)

    Lee, J.J.; Schmitt, F.T.; Moore, R.G.; Johnston, S.; Cui, Y.-T.; Li, W.; Yi, M.; Liu, Z.K.; Hashimoto, M.; Zhang, Y.; Lu, D.H.; Devereaux, T.P.; Lee, D.-H.; Shen, Z.-X.

    2014-11-12T23:59:59.000Z

    Films of iron selenide (FeSe) one unit cell thick grown on strontium titanate (SrTiO3 or STO) substrates have recently shown superconducting energy gaps opening at temperatures close to the boiling point of liquid nitrogen (77 K), which is a record for the iron-based superconductors. The gap opening temperature usually sets the superconducting transition temperature Tc, as the gap signals the formation of Cooper pairs, the bound electron states responsible for superconductivity. To understand why Cooper pairs form at such high temperatures, we examine the role of the SrTiO3 substrate. Here we report high-resolution angle-resolved photoemission spectroscopy results that reveal an unexpected characteristic of the single-unit-cell FeSe/SrTiO3 system: shake-off bands suggesting the presence of bosonic modes, most probably oxygen optical phonons in SrTiO3, which couple to the FeSe electrons with only a small momentum transfer. Such interfacial coupling assists superconductivity in most channels, including those mediated by spin fluctuations. Our calculations suggest that this coupling is responsible for raising the superconducting gap opening temperature in single-unit-cell FeSe/SrTiO3.

  20. WIND DATA REPORT Quincy DPW, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Quincy DPW, MA September 1st 2006 to November 30th 2006 Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  1. WIND DATA REPORT WBZ Tower, Hull, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT WBZ Tower, Hull, MA 9/1/06-11/30/06 Prepared for Department of Energy (DOE) Golden.................................................................................................................... 10 Wind Speed Time Series...........................................................................................................

  2. WIND DATA REPORT Quincy DPW, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Quincy DPW, MA June 1st 2006 to August 31st 2006 Prepared for Massachusetts.................................................................................................................... 11 Wind Speed Time Series........................................................................................................... 11 Wind Speed Distributions

  3. WIND DATA REPORT Quincy DPW, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT Quincy DPW, MA March 1st 2007 to May 31st 2007 Prepared for Massachusetts...................................................................................................................... 8 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions

  4. WIND DATA REPORT WBZ Tower, Hull, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT WBZ Tower, Hull, MA 11/13/06-11/30/06 Prepared for Department of Energy (DOE.................................................................................................................... 10 Wind Speed Time Series.........................................................................................................

  5. MA 159 Final Exam Memo/Preparation

    E-Print Network [OSTI]

    Owen Davis

    2007-11-17T23:59:59.000Z

    MA 159 Final Exam Memo/Preparation. Monday, December 10 – 10:20 AM (2 hour exam). In Lambert Fieldhouse. **Note the early time and have double and ...

  6. MA 26200 Class Information (Fall 2013)

    E-Print Network [OSTI]

    FINAL EXAM - Tuesday, December 10th (1:00pm - 3:00pm) LAMBERT Fieldhouse. Seating Chart (Lambert Fieldhouse) · MA 262 Final Exam resources

  7. MA 26600 Class Information (Fall 2012)

    E-Print Network [OSTI]

    ... for Important Announcements and Alerts ***. MA 266 FINAL EXAM - Tuesday, December 11 (10:30am - 12:30pm). Seating Chart (LAMBERT FIELDHOUSE) ...

  8. Influence of oxygen pressure and aging on LaAlO{sub 3} films grown by pulsed laser deposition on SrTiO{sub 3} substrates

    SciTech Connect (OSTI)

    Park, Jihwey; Aeppli, Gabriel [London Centre for Nanotechnology, University College London, London WC1H 0AH (United Kingdom); Soh, Yeong-Ah, E-mail: yeongahsoh@gmail.com [London Centre for Nanotechnology, University College London, London WC1H 0AH (United Kingdom); Department of Materials, Imperial College London, London SW7 2AZ (United Kingdom); David, Adrian; Lin, Weinan [Division of Physics and Applied Physics, Nanyang Technological University, Singapore 637371 (Singapore); Wu, Tom [Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal 23955-6900 (Saudi Arabia)

    2014-02-24T23:59:59.000Z

    The crystal structures of LaAlO{sub 3} films grown by pulsed laser deposition on SrTiO{sub 3} substrates at oxygen pressure of 10{sup ?3} millibars or 10{sup ?5} millibars, where kinetics of ablated species hardly depend on oxygen background pressure, are compared. Our results show that the interface between LaAlO{sub 3} and SrTiO{sub 3} is sharper when the oxygen pressure is lower. Over time, the formation of various crystalline phases is observed while the crystalline thickness of the LaAlO{sub 3} layer remains unchanged. X-ray scattering as well as atomic force microscopy measurements indicate three-dimensional growth of such phases, which appear to be fed from an amorphous capping layer present in as-grown samples.

  9. Impact of Solvent on Photocatalytic Mechanisms: Reactions of Photodesorption Products with Ice Overlayers on the TiO2(110) Surface

    SciTech Connect (OSTI)

    Shen, Mingmin; Henderson, Michael A.

    2011-04-07T23:59:59.000Z

    The effects of water and methanol ice overlayers on the photodecomposition of acetone on rutile TiO2(110) were evaluated in ultrahigh vacuum (UHV) using photon stimulated desorption (PSD) and temperature programmed desorption (TPD). In the absence of ice overlayers, acetone photodecomposed on TiO2(110) at 95 K by ejection of a methyl radical into the gas phase and formation of acetate on the surface. With ice overlayers, the methyl radicals are trapped at the interface between TiO2(110) and the ice. When water ice was present, these trapped methyl radicals reacted either with each other to form ethane or with other molecules in the ice (e.g., water or displaced acetone) to form methane (CH4), ethane (CH3CH3) and other products (e.g., methanol), with all of these products trapped in the ice. The new products were free to revisit the surface or depart during desorption of the ice. When methanol ice was present, methane formation came about only from reaction of trapped methyl radicals with the methanol ice. Methane and ethane slowly leaked through methanol ice overlayers into vacuum at 95 K, but not through water ice overlayers. Different degrees of site competition between water and acetone, and between methanol and acetone led to different hydrogen abstraction pathways in the two ices. These results provide new insights into product formation routes and solution-phase radical formation mechanisms that are important in heterogeneous photocatalysis.

  10. Impact of composition and crystallization behavior of atomic layer deposited strontium titanate films on the resistive switching of Pt/STO/TiN devices

    SciTech Connect (OSTI)

    Aslam, N.; Rodenbücher, C.; Szot, K.; Waser, R.; Hoffmann-Eifert, S., E-mail: su.hoffmann@fz-juelich.de [Peter-Grünberg Institute (PGI-7), Forschungszentrum Jülich and JARA-FIT, 52425 Jülich (Germany); Longo, V.; Roozeboom, F.; Kessels, W. M. M. [Department of Applied Physics, Eindhoven University of Technology, 5600 MB Eindhoven (Netherlands)

    2014-08-14T23:59:59.000Z

    The resistive switching (RS) properties of strontium titanate (Sr{sub 1+x}Ti{sub 1+y}O{sub 3+(x+2y)}, STO) based metal-oxide-metal structures prepared from industrial compatible processes have been investigated focusing on the effects of composition, microstructure, and device size. Metastable perovskite STO films were prepared on Pt-coated Si substrates utilizing plasma-assisted atomic layer deposition (ALD) from cyclopentadienyl-based metal precursors and oxygen plasma at 350?°C, and a subsequent annealing at 600?°C in nitrogen. Films of 15?nm and 12?nm thickness with three different compositions [Sr]/([Sr]?+?[Ti]) of 0.57 (Sr-rich STO), 0.50 (stoichiometric STO), and 0.46 (Ti-rich STO) were integrated into Pt/STO/TiN crossbar structures with sizes ranging from 100??m{sup 2} to 0.01??m{sup 2}. Nano-structural characterizations revealed a clear effect of the composition of the as-deposited STO films on their crystallization behavior and thus on the final microstructures. Local current maps obtained by local-conductivity atomic force microscopy were in good agreement with local changes of the films' microstructures. Correspondingly, also the initial leakage currents of the Pt/STO/TiN devices were affected by the STO compositions and by the films' microstructures. An electroforming process set the Pt/STO/TiN devices into the ON-state, while the forming voltage decreased with increasing initial leakage current. After a RESET process under opposite voltage has been performed, the Pt/STO/TiN devices showed a stable bipolar RS behavior with non-linear current-voltage characteristics for the high (HRS) and the low (LRS) resistance states. The obtained switching polarity and nearly area independent LRS values agree with a filamentary character of the RS behavior according to the valence change mechanism. The devices of 0.01??m{sup 2} size with a 12?nm polycrystalline stoichiometric STO film were switched at a current compliance of 50??A with voltages of about ±1.0?V between resistance states of about 40?k? (LRS) and 1 M? (HRS). After identification of the influences of the films' microstructures, i.e., grain boundaries and small cracks, the remaining RS properties could be ascribed to the effect of the [Sr]/([Sr]?+?[Ti]) composition of the ALD STO thin films.

  11. Magnetization measurements on multifilamentary Nb/sub 3/Sn and NbTi conductors

    SciTech Connect (OSTI)

    Ghosh, A.K.; Robins, K.E.; Sampson, W.B.

    1984-01-01T23:59:59.000Z

    The effective filament size has been determined for a number of high current Nb/sub 3/Sn multifilamentary composites. In most cases it is much larger than the nominal filament size. For the smallest filaments (approx. 1 micron) the effective size can be as much as a factor of forty times the nominal size. Samples made by the internal tin, bronze route, and jelly roll methods have been examined with filaments in the range one to ten microns. Rate dependent magnetization and flux jumping have been observed in some cases. NbTi composites ranging in filament size from nine to two hundred microns and with copper to super-conductor ratios between 1.6:1 and 7:1 have been examined in the same apparatus. Low field flux jumping was only observed in conductors with very large filaments and relatively little stabilizing copper. 9 references, 6 figures, 3 tables.

  12. Nucleation kinetics during homoepitaxial growth of TiN(001) by reactive magnetron sputtering Marcel A. Wall, David G. Cahill, I. Petrov, D. Gall, and J. E. Greene

    E-Print Network [OSTI]

    Gall, Daniel

    Nucleation kinetics during homoepitaxial growth of TiN(001) by reactive magnetron sputtering Marcel to study the nucleation of homoepitaxial TiN layers grown on TiN(001) by ultrahigh vacuum reactive kinet- ics of TiN, a two-component refractory ceramic, on TiN 001 . TiN, typically deposited by reactive

  13. Pulsed laser deposition of epitaxial BeO thin films on sapphire and SrTiO{sub 3}

    SciTech Connect (OSTI)

    Peltier, Thomas; Takahashi, Ryota; Lippmaa, Mikk, E-mail: mlippmaa@issp.u-tokyo.ac.jp [Institute for Solid State Physics, University of Tokyo, Chiba 277-8581 (Japan)

    2014-06-09T23:59:59.000Z

    Epitaxial beryllia thin films were grown by pulsed laser deposition on Al{sub 2}O{sub 3}(001) and SrTiO{sub 3}(111) substrates. Nearly relaxed epitaxial films were obtained on both substrates at growth temperatures of up to about 600?°C. Crystalline films with expanded lattice parameters were obtained even at room temperature. The maximum growth temperature was limited by a loss of beryllium from the film surface. The volatility of beryllium appeared to be caused by the slow oxidation kinetics at the film surface and the re-sputtering effect of high-energy Be and BeO species in the ablation plume. Time-of-flight plume composition analysis suggested that the target surface became Be metal rich at low oxygen pressures, reducing the growth rate of beryllia films.

  14. A density functional theory study of atomic steps on stoichiometric rutile TiO{sub 2}(110)

    SciTech Connect (OSTI)

    Stausholm-Møller, Jess; Kristoffersen, Henrik Høgh; Martinez, Umberto; Hammer, Bjørk [Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)] [Interdisciplinary Nanoscience Center (iNANO) and Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C (Denmark)

    2013-12-21T23:59:59.000Z

    We present a detailed theoretical study of the energetics of stoichiometric steps on the (110) surface of rutile TiO{sub 2}. Step structures running along the ?001?, ?11{sup ¯}1?, and ?11{sup ¯}0? directions including bulk-terminations and possible reconstructions have been considered. A robust method for extracting surface and step energies of vicinal surfaces, where the surface energies converge slowly with respect to slab thickness, is outlined and used. Based on the calculated step energies a 2D Wulff-construction is presented from which it can be concluded that in equilibrium only oxygen terminated steps running along the ?001? directions and reconstructed steps along the ?11{sup ¯}1? directions should be present. Finally it is found that under conditions of stoichiometry the reconstructed ?11{sup ¯}1? steps should be more than twice as abundant as oxygen terminated ?001? steps.

  15. Line broadening studies on highly defective TiO/sub 2/ produced by high pressure shock loading

    SciTech Connect (OSTI)

    Morosin, B.; Graeber, E.J.; Graham, R.A.

    1983-01-01T23:59:59.000Z

    Enhanced solid state reactivity of materials both during and after shock compression has been attributed to the introduction of large numbers of defects into the crystalline lattices and to reduction in the particle and crystalline size of powders. In particular, orders of magnitude increases in the catalytic activity has been observed in shock-modified TiO/sub 2/. Line broadening of x-ray diffraction profiles provides a means to determine the coherent crystallite size and the residual lattice strain resulting from defect concentrations. The present study on shock-loaded rutile is a detailed investigation of the influence of shock loading on residual lattice strain and coherent crystallite size. Annealing of shock-modified rutile powders is also studied.

  16. Chemically grown TiO2 on glass with superior photocatalytic properties G. Kenanakis a,b,

    E-Print Network [OSTI]

    : Titanium dioxide thin films Degussa P25 TiO2 Sol­gel technique Photocatalysis Stearic acid Methylene blue of photocatalysis for various applications such as water treatment, air purification and fuel cells [1­5]. TiO2

  17. The relationship between teacher Levels of Technology Integration (LoTi) on 3rd-5th Grade Students on the Texas Assessment of Knowledge and Skills (TAKS) scores at Alamo Heights Independent School District, San Antonio, Texas

    E-Print Network [OSTI]

    Bashara, Dana Marie

    2008-10-10T23:59:59.000Z

    . The following recommendations were made: 1. Additional research is needed to examine how technology is specifically implemented in both reading and math classrooms at the elementary level. 2. Additional research is needed to examine how staff development... on the LoTi instrument affected classroom practice and teacher responses on the LoTi survey. 3. Continued support is needed to provide teachers with professional development regarding the integration of technology as a teaching tool and repeat the research...

  18. The Role of tantalum in TiC-WC-TaC-Co sintered carbides. II. influence of tantalum content on the structure and properties of TiC-WC-TaC-Co three-phase sintered carbides

    SciTech Connect (OSTI)

    Cheburaeva, R.F.; Chaporova, I.N.

    1986-10-01T23:59:59.000Z

    This work is devoted to a study of the influence of tantalum on the structure and properties of three-phase alloys. The investigations were made with a constant weight ratio of Ti:WC = 35:65% and an unchanged carbon content. The alloys were prepared by mixing of the (T, W, Ta)C carbides with cobalt and tungsten carbide. The pressed specimens were given a preliminary sinter in hydrogen at 923-973 K and a final one in a vacuum furnace at 1773 K. The microstructure, density, and bend and compressive strengths at room and increased temperatures, coeffiecients of cutting life and strength (in comparison with a standard taken as unity), and adhesion interaction were determined. The coefficient of cutting life was determined by transverse machining of steel. The coefficient of strength was determined by the method of breaking feed in milling of 50 steel with a single-tooth cutter. The adhesion interaction of TiC-WC-TaC-Co alloys with the material being machined (50 steel) was determined in vacuum (which eliminated the additional influence of oxidation of the alloy) at 873 K with a load of 1000N. Tantalum carbide additions have a favorable influence on the physicomechanical and service properties of TiC-WC-Co alloys. Their bend strength at room and increased temperatures increases and there is an increase in the total deformation and the work for deformation at increased temperatures, a reduction in oxidation and adhesion interaction with the material being machined, and a significant increase in wear resistance in cutting. Graphs and tables are included.

  19. Impact of three different TiO2 morphologies on hydrogen evolution by methonal assisted water-splitting: nanoparticles, nanotubes and

    E-Print Network [OSTI]

    Boyer, Edmond

    -splitting: nanoparticles, nanotubes and aerogels. (published in International Journal of Hydrogen Energy 36, 22 (2011, nanotubes and aerogels. These materials have shown different behaviours depending on both their composition of the samples (nanotubes or aerogels). Among all the tested samples, the TiO2 aerogel supported Pt one exhibited

  20. Water adsorption on SrTiO3(001): II. Water, water, everywhere A.E. Becerra-Toledo a,

    E-Print Network [OSTI]

    Marks, Laurence D.

    Water adsorption on SrTiO3(001): II. Water, water, everywhere A.E. Becerra-Toledo a, , J January 2012 Available online 17 January 2012 Keywords: Strontium titanate Density functional theory Water adsorption Surface reconstruction X-ray photoelectron spectroscopy Oxide surfaces The role of water

  1. Growth of Aligned Single-Crystalline Rutile TiO2 Nanowires on Arbitrary Substrates and Their Application in Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Zhou, Chongwu

    and Their Application in Dye-Sensitized Solar Cells Akshay Kumar, Anuj R. Madaria, and Chongwu Zhou* Department array of TiO2 nanowires on FTO as the photoanode is demonstrated in dye-sensitized solar cell for applications related to solar energy such as dye-sensitized solar cell (to convert light into electricity),18

  2. An Integrated Power Pack of Dye-Sensitized Solar Cell and Li Battery Based on Double-Sided TiO2 Nanotube Arrays

    E-Print Network [OSTI]

    Wang, Zhong L.

    An Integrated Power Pack of Dye-Sensitized Solar Cell and Li Battery Based on Double-Sided TiO2 harvest and storage processes. This power pack incorporates a series-wound dye- sensitized solar cell, nanostructures have been widely used in energy harvesting devices, such as dye-sensitized solar cells (DSSCs

  3. Effect of Electron-Electron Interaction on Transport in Dye-Sensitized Nanocrystalline TiO2

    SciTech Connect (OSTI)

    van de Lagemaat, J.; Kopidakis, N.; Neale, N. R.; Frank, A. J.

    2005-01-01T23:59:59.000Z

    Experimental measurements and continuous-time random walk simulations on sensitized electrolyte-infused porous nanocrystalline TiO2 films show that the actual electronic charge in the films is significantly larger than that estimated from small-perturbation methods by a constant, light-intensity-independent factor. This observation can be explained by small-perturbation techniques measuring the chemical diffusion coefficient of electrons instead of the normally assumed tracer diffusion coefficient of electrons. The difference between the two diffusion coefficients is attributed to the presence of an exponential density of states through which electrons interact. At high light intensities, an additional extra component owing to Coulomb interactions between the electrons is expected to arise.

  4. The microwave effect on the properties of silica-coated TiO{sub 2} fine particles prepared using sol-gel method

    SciTech Connect (OSTI)

    Furusawa, Takeshi [Department of Applied Chemistry, Faculty of Engineering, Utsunomiya University, Yoto 7-1-2, Utsunomiya 321-8585 (Japan); Honda, Kozue; Ukaji, Emi; Sato, Masahide [Department of Information and Control Systems Science, Graduate School of Engineering, Utsunomiya University, Yoto 7-1-2, Utsunomiya 321-8585 (Japan); Suzuki, Noboru [Department of Information and Control Systems Science, Graduate School of Engineering, Utsunomiya University, Yoto 7-1-2, Utsunomiya 321-8585 (Japan)], E-mail: suzukin@cc.utsunomiya-u.ac.jp

    2008-04-01T23:59:59.000Z

    The silica coating of TiO{sub 2} fine particle was conducted using microwave assisted sol-gel method and conventional sol-gel method to suppress its photo-catalytic activity. The amount and uniformity of silica coating on TiO{sub 2} surface were characterized by X-ray photoelectron spectroscopy (XPS), X-ray fluorescence spectroscopy (XRF), infrared spectroscopy (IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and zeta potential measurements. XPS and XRF results showed that the presence of catalyst and reaction time were important factors to reach high silica amounts. SEM, TEM, and zeta potential results indicated that dense film coating of SiO{sub 2} layer formed on TiO{sub 2} surface in conventional sol-gel method, whereas the nucleation coating was observed on sample prepared by microwave assisted sol-gel method. When photo-catalytic activities and ultraviolet (UV) shielding abilities of these samples were evaluated, the sample prepared by microwave processing showed higher inhibition of photo-catalytic activity and better UV shielding ability than the sample prepared by conventional method. These results suggested that the coating method significantly affected the photo-catalytic activity and UV shielding ability of coated TiO{sub 2}.

  5. Taught degrees MA in Journalism and Documentary Practice

    E-Print Network [OSTI]

    Sussex, University of

    in the top 10 places to study in the UK in The Complete University Guide 2012-13 and The Times GoodEssentials Taught degrees MA in Journalism and Documentary Practice MA in Journalism and Media Studies MA in Multimedia Journalism Related degrees MA in Creative Media Practice (p119) MA in Digital

  6. On the optical properties of Ag+15 ion beam irradiated TiO2 and SnO2 thin films

    E-Print Network [OSTI]

    Thakur, Hardeep; Thakur, P; Sharma, K K; Singh, Abhinav Pratap; Kumar, Yogesh; Kumar, Ravi; Chae, Keun Hwa

    2011-01-01T23:59:59.000Z

    In this study, the effects of 200 MeV Ag+15 ion irradiation on the optical properties of TiO2 and SnO2 thin films prepared by RF magnetron sputtering technique were investigated. These films were characterized by the UV-vis spectroscopy and it was observed that with increase in irradiation fluence the transmittance for the TiO2 films systematically increases while that for SnO2 decreases. Absorption spectra of the irradiated samples showed a minor changes in indirect bandgap from 3.44 to 3.59 eV for TiO2 while that for SnO2 significant modifications in the direct bandgap from 3.92 to 3.6 eV were observed on increasing irradiation fluence. The observed modifications in the optical properties of both TiO2 and SnO2 systems with irradiation can be attributed to controlled structural disorder/defects in the system.

  7. Effect of oxygen incorporation on the structure and elasticity of Ti-Al-O-N coatings synthesized by cathodic arc and high power pulsed magnetron sputtering

    SciTech Connect (OSTI)

    Hans, M., E-mail: hans@mch.rwth-aachen.de; Baben, M. to; Music, D.; Ebenhöch, J.; Schneider, J. M. [Materials Chemistry, RWTH Aachen University, Kopernikusstr. 10, D-52074 Aachen (Germany); Primetzhofer, D. [Department of Physics and Astronomy, Uppsala University, Lägerhyddsvägen 1, S-75120 Uppsala (Sweden); Kurapov, D.; Arndt, M.; Rudigier, H. [Oerlikon Balzers Coating AG, Iramali 18, LI-9496 Balzers, Principality of Liechtenstein (Liechtenstein)

    2014-09-07T23:59:59.000Z

    Ti-Al-O-N coatings were synthesized by cathodic arc and high power pulsed magnetron sputtering. The chemical composition of the coatings was determined by means of elastic recoil detection analysis and energy dispersive X-ray spectroscopy. The effect of oxygen incorporation on the stress-free lattice parameters and Young's moduli of Ti-Al-O-N coatings was investigated by X-ray diffraction and nanoindentation, respectively. As nitrogen is substituted by oxygen, implications for the charge balance may be expected. A reduction in equilibrium volume with increasing O concentration is identified by X-ray diffraction and density functional theory calculations of Ti-Al-O-N supercells reveal the concomitant formation of metal vacancies. Hence, the oxygen incorporation-induced formation of metal vacancies enables charge balancing. Furthermore, nanoindentation experiments reveal a decrease in elastic modulus with increasing O concentration. Based on ab initio data, two causes can be identified for this: First, the metal vacancy-induced reduction in elasticity; and second, the formation of, compared to the corresponding metal nitride bonds, relatively weak Ti-O and Al-O bonds.

  8. Photoinduced Stepwise Oxidative Activation of a Chromophore–Catalyst Assembly on TiO2

    SciTech Connect (OSTI)

    Song, Wenjing [Univ. of North Carolina, Chapel Hill, NC (United States); Glasson, Christopher R. K. [Univ. of North Carolina, Chapel Hill, NC (United States); Luo, Hanlin [Univ. of North Carolina, Chapel Hill, NC (United States); Hanson, Kenneth [Univ. of North Carolina, Chapel Hill, NC (United States); Brennaman, M. Kyle [Univ. of North Carolina, Chapel Hill, NC (United States); Concepcion, Javier J. [Univ. of North Carolina, Chapel Hill, NC (United States); Meyer, Thomas J. [Univ. of North Carolina, Chapel Hill, NC (United States)

    2011-07-21T23:59:59.000Z

    To probe light-induced redox equivalent separation and accumulation, we prepared ruthenium polypyridyl molecular assembly [(dcb)?Ru(bpy-Mebim?py)Ru(bpy)(OH?)]4+ (RuaII–RubII–OH?) with Rua as light-harvesting chromophore and Rub as water oxidation catalyst (dcb = 4,4'-dicarboxylic acid-2,2'-bipyridine; bpy-Mebim?py = 2,2'-(4-methyl-[2,2':4',4"-terpyridine]-2",6"-diyl)bis(1-methyl-1H-benzo[d]imidazole); bpy = 2,2'-bipyridine). When bound to TiO? in nanoparticle films, it undergoes MLCT excitation, electron injection, and oxidation of the remote -RubII-OH? site to give TiO?(e?)-RuaII-RubIII–OH?3+ as a redox-separated transient. The oxidized assembly, TiO?-RuaII-RubIII-OH?³?, similarly undergoes excitation and electron injection to give TiO?(e?)-RuaII-RubIV=O²?, with RubIV=O²? a known water oxidation catalyst precursor. Injection efficiencies for both forms of the assembly are lower than those for [Ru(bpy)?(4,4'-(PO?H?)?bpy)]²? bound to TiO? (TiO?-Ru²?), whereas the rates of back electron transfer, TiO?(e?) ? RubIII-OH?³? and TiO?(e?) ? RubIV=O²?, are significantly decreased compared with TiO?(e?) ? Ru³? back electron transfer.

  9. Film Coating Process Research and Characterization of TiN Coated Racetrack-type Ceramic Pipe

    E-Print Network [OSTI]

    Wang, Jie; Zhang, Bo; Wei, Wei; Fan, Le; Pei, Xiangtao; Hong, Yuanzhi; Wang, Yong

    2015-01-01T23:59:59.000Z

    TiN film was coated on the internal face of racetrack-type ceramic pipe by three different methods: radio-frequency sputtering, DC sputtering and DC magnetron sputtering. The deposition rates of TiN film under different coating methods were compared. According to the AFM, SEM, XPS test results,these properties were analyzed, such as TiN film roughness and surface morphology. At the same time, the deposition rates were studied under two types' cathode, Ti wires and Ti plate. According to the SEM test results, Ti plate cathode can improve the TiN/Ti film deposition rate obviously.

  10. Dual Phase Li4 Ti5O12–TiO2 Nanowire Arrays As Integrated Anodes For High-rate Lithium-ion Batteries

    SciTech Connect (OSTI)

    Liao, Jin; Chabot, Victor; Gu, Meng; Wang, Chong M.; Xiao, Xingcheng; Chen, Zhongwei

    2014-08-19T23:59:59.000Z

    Lithium titanate (Li4Ti5O12) is well known as a zero strain material inherently, which provides excellent long cycle stability as a negative electrode for lithium ion batteries. However, the low specific capacity (175 mA h g?1) limits it to power batteries although the low electrical conductivity is another intrinsic issue need to be solved. In this work, we developed a facile hydrothermal and ion-exchange route to synthesize the self-supported dual-phase Li4Ti5O12–TiO2 nanowire arrays to further improve its capacity as well as rate capability. The ratio of Li4Ti5O12 to TiO2 in the dual phase Li4Ti5O12–TiO2 nanowire is around 2:1. The introduction of TiO2 into Li4Ti5O12 increases the specific capacity. More importantly, by interface design, it creates a dual-phase nanostructure with high grain boundary density that facilitates both electron and Li ion transport. Compared with phase-pure nanowire Li4Ti5O12 and TiO2 nanaowire arrays, the dual-phase nanowire electrode yielded superior rate capability (135.5 at 5 C, 129.4 at 10 C, 120.2 at 20 C and 115.5 mA h g?1 at 30 C). In-situ transmission electron microscope clearly shows the near zero deformation of the dual phase structure, which explains its excellent cycle stability.

  11. MA10209 Algebra 1A Counting Partitions: GCS

    E-Print Network [OSTI]

    Smith, Geoff

    a slightly different question. How many ways are there to partition five people into three teams, one of sizeMA10209 Algebra 1A Counting Partitions: GCS 30-x-11 The course website is http://people on enumerating partitions. Suppose that you have five people, and you wish to put them into three teams: a blue

  12. MA 747, Spring 2012 Probability and Stochastic Process II

    E-Print Network [OSTI]

    Ito, Kazufumi

    MA 747, Spring 2012 Probability and Stochastic Process II Lecture Notes and Reference book The course will be based on the lecture notes and the reference book: Stochastic Processes, S.R.S. Varadhan theory needed for advanced applications in stochastic processes. It provides the basic probability theory

  13. Multiferroic BaTiO3-CoFe2O4 Nanostructures

    E-Print Network [OSTI]

    Ramesh, R.

    an additional degree of freedom in the design of actuators, transducers, and storage devices. HoweverMultiferroic BaTiO3-CoFe2O4 Nanostructures H. Zheng,1 J. Wang,1 S. E. Lofland,3 Z. Ma,1 L. Mohaddes and magnetic order param- eters in a nanostructured BaTiO3-CoFe2O4 ferroelectromagnet. This facilitates

  14. Catalytic epoxidation of propene with H2O-O2 reactants on Au/TiO2

    SciTech Connect (OSTI)

    Ojeda, Manuel; Iglesia, Enrique

    2008-11-05T23:59:59.000Z

    Au/TiO{sub 2} catalysts form hydroperoxy species from H{sub 2}O-O{sub 2} mixtures at near-ambient temperatures. These species can be used in the selective epoxidation of propene to propylene oxide.

  15. Electrochemical corrosion behavior of biomedical Ti22Nb and Ti22Nb6Zr alloys in saline medium

    E-Print Network [OSTI]

    Zheng, Yufeng

    Electrochemical corrosion behavior of biomedical Ti­22Nb and Ti­22Nb­6Zr alloys in saline medium B addition and potentiodynamic polarization on the microstructure and corrosion resistance of Ti­22Nb and Ti­22Nb­6Zr alloy samples.The corrosion tests were carried out in 0.9% NaCl at 37 8C and neutral p

  16. WIND DATA REPORT WBZ Tower, Hull, MA

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    WIND DATA REPORT WBZ Tower, Hull, MA 12/1/06-2/28/07 Prepared for Department of Energy (DOE) Golden...................................................................................................................... 8 Wind Speed Time Series............................................................................................................. 9 Wind Speed Distributions

  17. MA 266 Review Topics - Exam # 1

    E-Print Network [OSTI]

    2012-01-25T23:59:59.000Z

    Page 1. Spring 2012. MA 266. Review Topics - Exam # 1. (1) Special Types of First Order Equations. I. First Order Linear Equation (FOL): dy dt. + p(t)y = g(t).

  18. New Tertiary paleomagnetic poles from Mongolia and Siberia at 40, 30, 20, and 13 Ma

    E-Print Network [OSTI]

    Cogne, Jean-Pascal

    New Tertiary paleomagnetic poles from Mongolia and Siberia at 40, 30, 20, and 13 Ma: Clues of a paleomagnetic study of 490 cores from 59 sites, corresponding to 52 distinct basaltic flows from Mongolia Tertiary paleomagnetic poles from Mongolia and Siberia at 40, 30, 20, and 13 Ma: Clues on the inclination

  19. Studies on the room temperature growth of nanoanatase phase TiO{sub 2} thin films by pulsed dc magnetron with oxygen as sputter gas

    SciTech Connect (OSTI)

    Karuppasamy, A.; Subrahmanyam, A. [Semiconductor Laboratory, Department of Physics, Indian Institute of Technology Madras, Chennai 600036 (India)

    2007-03-15T23:59:59.000Z

    The anatase phase titanium dioxide (TiO{sub 2}) thin films were deposited at room temperature by pulsed dc magnetron sputtering using pure oxygen as sputter gas. The structural, optical, electrical, and electrochromic properties of the films have been studied as a function of oxygen pressure in the chamber. The x-ray diffraction results indicate that the films grown above 4.5x10{sup -2} mbar are nanocrystalline (grain size of 28-43 nm) with anatase phase. The films deposited at the chamber pressure of 7.2x10{sup -2} mbar are found to be highly crystalline with a direct optical band gap of 3.40 eV, refractive index of 2.54 (at {lambda}=400 nm), and work function of 4.77 eV (determined by the Kelvin probe measurements). From the optical emission spectra of the plasma and transport of ions in matter calculations, we find that the crystallization of TiO{sub 2} at room temperature is due to the impingement of electrons and ions on the growing films. Particularly, the negative oxygen ions reflected from the target by 'negative ion effects' and the enhanced density of TiO, TiO{sup +}, TiO{sub 2}{sup +}, and O{sup 2+} particles in the plasma are found to improve the crystallization even at a relatively low temperature. From an application point of view, the film grown at 7.2x10{sup -2} mbar was studied for its electrochromic properties by protonic intercalation. It showed good electrochromic behavior with an optical modulation of {approx}45%, coloration efficiency of 14.7 cm{sup 2} C{sup -1}, and switching time (t{sub c}) of 50 s for a 2x2 cm{sup 2} device at {lambda}=633 nm.

  20. SAMPLE Plan of Study for Mathematics Education (MAED)

    E-Print Network [OSTI]

    Cara

    2013-03-20T23:59:59.000Z

    Hours. Semester 1. Course. MA 16100, 16500. ENGL 10600/10800 Language 101002. MA 10800 Free. Title. Calculus I. Freshman Comp. Intro Math. Hours. 4-

  1. Carrier-Controlled Ferromagnetism in SrTiO3

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

    Moetakef, Pouya; Williams, James R.; Ouellette, Daniel G.; Kajdos, Adam P.; Goldhaber-Gordon, David; Allen, S. James; Stemmer, Susanne

    2012-06-01T23:59:59.000Z

    Magnetotransport and superconducting properties are investigated for uniformly La-doped SrTiO3 films and GdTiO3/SrTiO3 heterostructures, respectively. GdTiO3/SrTiO3 interfaces exhibit a high-density 2D electron gas on the SrTiO3 side of the interface, while, for the SrTiO3 films, carriers are provided by the dopant atoms. Both types of samples exhibit ferromagnetism at low temperatures, as evidenced by a hysteresis in the magnetoresistance. For the uniformly doped SrTiO3 films, the Curie temperature is found to increase with doping and to coexist with superconductivity for carrier concentrations on the high-density side of the superconducting dome. The Curie temperature of the GdTiO3/SrTiO3 heterostructures scales with the thickness of the SrTiO3 quantum well. The results are used to construct a stability diagram for the ferromagnetic and superconducting phases of SrTiO3.

  2. Effect of charge compensation on the photoelectrochemical properties of Ho-doped SrTiO{sub 3} films

    SciTech Connect (OSTI)

    Zhao, Long; Fang, Liang; Dong, Wen; Zheng, Fengang; Shen, Mingrong [Jiangsu Key Laboratory of Thin Films and Department of Physics, Soochow University, Suzhou 215006 (China)] [Jiangsu Key Laboratory of Thin Films and Department of Physics, Soochow University, Suzhou 215006 (China); Wu, Tom [Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)] [Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371 (Singapore)

    2013-03-25T23:59:59.000Z

    When Ho{sup 3+} ions are substituted at Sr{sup 2+} sites in SrTiO{sub 3} (STO), the excess positive charges are compensated via three complementary routes: (1) strontium vacancies, (2) titanium vacancies, and (3) conduction electrons. In this study, we show that the photoelectrochemical properties of Ho-doped STO films are dependent on the charge compensation mechanisms. The compensation mechanism via the titanium vacancies exhibits the highest photocurrent density, which is 1.7 times higher than that of the pure STO sample. Based on the measured dielectric properties and electrochemical impedance spectroscopy data, we propose that the enhanced dielectric constant of the films can enlarge the width of the space charge region at the film/liquid interface, which eventually leads to the increase of the photocurrent density. Further enhancement of photocurrent density is obtained in the samples decorated with appropriate amounts of Pt nanoparticles, showing the advantage of composites for achieving the efficient photoelectrochemical property.

  3. Atomic and electronic structures of single-layer FeSe on SrTiO3(001): The role of oxygen deficiency

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

    Bang, Junhyeok; Li, Zhi; Sun, Y. Y.; Samanta, Amit; Zhang, Y. Y.; Zhang, Wenhao; Wang, Lili; Chen, X.; Ma, Xucun; Xue, Q.-K.; Zhang, S. B.

    2013-06-01T23:59:59.000Z

    Using first-principles calculation, we propose an interface structure for single triple-layer FeSe on the SrTiO3(001) surface, a high-Tc superconductor found recently. The key component of this structure is the oxygen deficiency on the top layer of the SrTiO3 substrate, as a result of Se etching used in preparing the high-Tc samples. The O vacancies strongly bind the FeSe triple layer to the substrate giving rise to a (2×1) reconstruction, as observed by scanning tunneling microscopy. The enhanced binding correlates to the significant increase of Tc observed in experiment. The O vacancies also serve as the source of electron doping, which modifies the Fermi surface of the first FeSe layer by filling the hole pocket near the center of the surface Brillouin zone, as suggested from angle-resolved photoemission spectroscopy measurement.

  4. Effect of NH{sub 3} on the low pressure chemical vapor deposition of TiO{sub 2} film at low temperature using tetrakis(diethylamino)titanium and oxygen

    SciTech Connect (OSTI)

    Song Xuemei; Takoudis, Christos G. [Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States); Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607 and Department of Bioengineering, University of Illinois at Chicago, Chicago, Illinois 60607 (United States)

    2007-03-15T23:59:59.000Z

    The effect of NH{sub 3} on TiO{sub 2} film deposition using tetrakis(diethylamino)titanium (TDEAT) and O{sub 2} as source gases in a low pressure chemical vapor deposition reactor was studied at low temperatures ranging from 100 to 250 deg. C. TiO{sub 2} film is traditionally deposited at temperature above 300 deg. C using oxygen-based Ti precursors, such as titanium tetraisopropoxide. In this study, the authors demonstrate that a combination of both reactive precursors, i.e., TDEAT and NH{sub 3}, is an effective technique for TiO{sub 2} film deposition at lower temperatures, albeit with some nitrogen incorporation. It was found that films can be formed at temperatures as low as 100 deg. C when NH{sub 3} is used. At higher temperatures, the growth rate of TiO{sub 2} films deposited using NH{sub 3} is higher than that of films deposited without NH{sub 3} by up to one order of magnitude. X-ray photoelectron spectroscopy data show that NH{sub 3} enhances the formation of TiNO and TiN, and x-ray diffraction analysis shows that all as-deposited films have amorphous structure. Both x-ray photoelectron spectroscopy and secondary ion mass spectroscopy depth profiles show that nitrogen, carbon, and oxygen are uniformly distributed throughout the film. The mechanism of enhancement of growth rate using NH{sub 3} is also discussed.

  5. A=16N (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07) (See Energy93TI07)93TI07) (See

  6. A=18Na (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not observed)95TI07) (See Energy3AJ01)95TI07)

  7. A=18Ne (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not observed)95TI07)95TI07) (See Energy Level

  8. A=18O (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not observed)95TI07)95TI07)

  9. A=20Be (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02)7AJ02)98TI06) (Not observed)98TI06)

  10. A=4HE (1992TI02)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)2010PU04)4He (1992TI02)

  11. A=4Li (1992TI02)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)2010PU04)4He (1992TI02)Li

  12. Epitaxial properties of Al-doped ZnO thin films grown by pulsed laser deposition on SrTiO{sub 3}(001)

    SciTech Connect (OSTI)

    Karger, M.; Schilling, M. [Technische Universitaet Braunschweig, Institut fuer Elektrische Messtechnik und Grundlagen der Elektrotechnik, Hans-Sommer-Strasse 66, D-38106 Braunschweig (Germany)

    2005-02-15T23:59:59.000Z

    Undoped and Al-doped ZnO films with dopant concentrations of nominally 1% and 10% and a thickness of 100 nm have been grown on SrTiO{sub 3}(001) by pulsed laser deposition at substrate temperatures between 650 deg. C and 820 deg. C. The epitaxial conditions were examined with high pressure in-situ reflection high energy electron diffraction (RHEED) and ex-situ x-ray diffraction (XRD) measurements in different geometries. The films are highly (1120)-oriented with a lattice mismatch between the SrTiO{sub 3}[110] direction and the c-axis of about 3%. Atomic force microscopy (AFM) revealed smooth surfaces with a roughness of d{sub rms}<5 nm and different sized islands.

  13. Gas phase photocatalytic degradation on TiO{sub 2} pellets of volatile chlorinated organic compounds from a soil vapor extraction well

    SciTech Connect (OSTI)

    Yamazaki-Nishida, S.; Read, H.W.; Nagano, J.K.; Anderson, M.A. [Wisconsin Univ., Madison, WI (United States). Water Chemistry Program; Cervera-March, S. [Barcelona Univ., (Spain). Department of Chemical Engineering; Jarosch, T.R.; Eddy-Dilek, C.A. [Westinghouse Savannah River Co., Aiken, SC (United States)

    1993-05-20T23:59:59.000Z

    The mineralization of trichloroethylene (TCE) and tetrachloroethylene (PCE) in gas stream from a soil vapor extraction (SVE) well was demonstrated with an annular photocatalytic reactor packed with porous TiO{sub 2} pellets in field trials at the Savannah River Site in Aiken, SC. The TiO{sub 2} pellets were prepared using a sol-gel method. The experiments were performed at 55 to 60{degree}C using space times of 10{sup 8} to 10{sup 10} g s/mol for TCE and PCE. Chloroform (CHCl{sub 3}) and carbon tetrachloride (CCl{sub 4}) were detected as minor products from side reactions. On a molar basis, CCl{sub 4} and CHCl{sub 3} produced were about 2% and 0.2 % of the reactants.

  14. MA 22300: Online Homework Instructions

    E-Print Network [OSTI]

    OwenDavis

    2013-09-22T23:59:59.000Z

    Aug 21, 2013 ... There is a direct correlation between time spent on homework and ... take the homework very seriously and spend sufficient time working on it.

  15. DOE - Office of Legacy Management -- Beverly MA Site - MA 04

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -KWatertowni5W 95.5x-L*AlaskaBerkeley

  16. Ma34a Prob. y Proc. Estocasticos 25 de Abril, 2006 Lista de Distribuciones

    E-Print Network [OSTI]

    Rapaport, Iván

    Ma34a Prob. y Proc. Estocâ??asticos 25 de Abril, 2006 Lista de Distribuciones por Marcos Kiwi Modelos! # i e -# , si i # SX = N . Modelos absolutamente continuos: A continuaciâ??on se da la funciâ??on densidad

  17. First-principles insights on the magnetism of cubic SrTi1-xCoxO3-J. M. Florez, S. P. Ong, M. C. Onbali, G. F. Dionne, P. Vargas et al.

    E-Print Network [OSTI]

    Ceder, Gerbrand

    First-principles insights on the magnetism of cubic SrTi1-xCoxO3- J. M. Florez, S. P. Ong, M. C/APPLAB/v100/i25 Published by the American Institute of Physics. Related Articles Magnetic properties and magnetic properties of BaTi1-xMnxO3 multiferroics J. Appl. Phys. 111, 113913 (2012) Preparation of Fe2Ni2N

  18. 182 IEEE TRANSACTIONS ON NANOTECHNOLOGY, VOL. 12, NO. 2, MARCH 2013 Monitoring the Environmental Impact of TiO2

    E-Print Network [OSTI]

    Parker, Lynne E.

    the potential environmental impact of these nanoparticles. The goal of this research was to de- velop a plant-based sensor network for characterizing, monitoring, and understanding the environmental impact of TiO2 impact of nanomaterials. Index Terms--Biosystems, environmental monitoring, nanobio- science

  19. On the lateral crystal growth of laser irradiated NiTi thin films A. J. Birnbaum,1,a

    E-Print Network [OSTI]

    Yao, Y. Lawrence

    grown, large-aspect crystals via pulsed, melt-mediated laser crystallization in NiTi thin films. Sputter of Physics. DOI: 10.1063/1.3138782 Pulsed, melt-mediated laser crystallization techniques have been studied phase processing. Wang et al.6 and Bellouard and co-workers7 used a near IR cw laser to selectively

  20. Co-doped Anatase TiO Heteroepitaxy on Si(001). | EMSL

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

    beam epitaxy (OPA-MBE) on Si(001) for evaluation as a potential dilute magnetic semiconductor material suitable for Si-based spintronic devices. Epitaxial growth on Si(001)...

  1. MA Mortenson | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual Siteof Energy 2,AUDIT REPORTEnergyFarmsPower CoLongxing Wind Power InvestmentM-7Mortenson

  2. CAES MaCS Home

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem NotEnergy,ARMForms About Batteries BatteriesCAES Home Home About Us Dr. Yaqiao (Y.

  3. Microsoft Word - S07581_MA

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA groupTuba City, Arizona, Disposal SiteRadiologicalInspection PhotosGroundwater

  4. MA 154 Schedule, Spring 2004

    E-Print Network [OSTI]

    math

    2014-01-11T23:59:59.000Z

    Click on Lesson ---PP to watch a recorded lesson in YouTube. Some lessons are ... January. Week 1. 13. Lesson 1A PP ... Lesson 28 PP. 1. 2. Lesson 29 PP. 3.

  5. MA 152 Exam 1 Memo

    E-Print Network [OSTI]

    math

    2011-09-13T23:59:59.000Z

    Sep 15, 2011 ... videos are also found on a video CD purchased with the textbook. It is recommended that you re-work all homework problems. You could work ...

  6. MA 152 Exam 1 Memo

    E-Print Network [OSTI]

    math

    2015-01-21T23:59:59.000Z

    Feb 11, 2015 ... written on an index card, label, or a returned paper. Seat assignments may be ... cell phone off; or better, do not bring it. Do not wear hats or ...

  7. MA 152 Exam 1 Memo

    E-Print Network [OSTI]

    math

    2014-09-09T23:59:59.000Z

    Sep 22, 2014 ... written on an index card, label, or a returned paper. Seat assignments ... Turn your cell phone off; or better, do not bring it. Do not wear hats or.

  8. RIVIER COLLEGE MA/CS Department

    E-Print Network [OSTI]

    Riabov, Vladimir V.

    , Code (in Appendix), test results, table of contents, and other project related materials. Good luckRIVIER COLLEGE MA/CS Department CS552: Software Design Strategy TEAM PROJECT REQUIREMENTS to the team project: The project should include: = Title of the project; = One-page Executive Summary

  9. Fabrication technology for ODS Alloy MA957

    SciTech Connect (OSTI)

    ML Hamilton; DS Gelles; RJ Lobsinger; MM Paxton; WF Brown

    2000-03-16T23:59:59.000Z

    A successful fabrication schedule has been developed at Carpenter Technology Corporation for the production of MA957 fuel and blanket cladding. Difficulties with gun drilling, plug drawing and recrystallization were overcome to produce a pilot lot of tubing. This report documents the fabrication efforts of two qualified vendors and the support studies performed at WHC to develop the fabrication-schedule.

  10. MA Ph.D. Qualifying Exam Directions

    E-Print Network [OSTI]

    Liblit, Ben

    MA Ph.D. Qualifying Exam Fall 2010 Directions: Use careful reasoning to develop the answers to each numerical answers. You may use the LZGS text for reference for this exam. 1. Explain in detail why the mean with the system. Each query type i also generates a small amount of further processing time, with average Si

  11. Grid Security: Expecting the Mingchao Ma

    E-Print Network [OSTI]

    University College London

    of a communications line; Power failure; Internet connection failure; Mis-configuration; · Security incidents ­ SystemGrid Security: Expecting the Unexpected Mingchao Ma STFC ­ Rutherford Appleton Laboratory, UK #12;Slide 2 Overview · Security Service Challenges (SSC) Review · Grid Security Incident ­ What had happened

  12. LAMPF TO MaRIE

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOEThe Bonneville PowerCherries 82981-1cnHigh SchoolIn12electron 9 5 - -/e),,s - 6157 / The Software &

  13. Experiment on TiO2/AC Photocatalysis Technique to Eliminate Toluene in Air Conditioning Systems

    E-Print Network [OSTI]

    Hu, Y.; Feng, G.; Yuan, Q.

    2006-01-01T23:59:59.000Z

    at present, the article proposes that new-type purification technique and hopes to promote the upgrading of the product about purification. 2. INTRODUTION ON THE STRURE AND STUFF OF ACTIVE CARBON AND NANO- TITANIUM DIOXIDE PHOTOCATALYSIS PURIFICATION... WEB What is called active carbon and nano-titanium dioxide photocatalysis technique is to utilize the method of compounding active carbon and nanometer photocatalyst to firstly form absorption layer on supporting body surface by gluing, which...

  14. First principles investigation of Ti adsorption and migration on Si(100) surfaces

    SciTech Connect (OSTI)

    Briquet, Ludovic G. V.; Wirtz, Tom; Philipp, Patrick, E-mail: philipp@lippmann.lu [Department of Science and Analysis of Materials (SAM), Centre de Recherche Public - Gabriel Lippmann, 41 rue du Brill, L-4422 Belvaux (Luxembourg)

    2013-12-28T23:59:59.000Z

    The titanium adsorption on Si(100) is investigated using first principles computer modelling methods. Two new subsurface adsorption sites are described. They are located at the edge of the cavity topped by a surface silicon dimer. The migration of the titanium from the surface to the subsurface sites is facilitated when occurring via one of these sites. The ejection of one of the silicon atoms forming the surface dimer is also investigated. The actual step of the ejection requires more energy than previously thought although, when considering the global picture of a titanium atom on the surface leading to the ejection of a silicon atom, the overall rate is compensated by the facilitated migration of the titanium to the subsurface sites. The consecutive adsorption of a second and third titanium atom is also investigated. It is shown that titanium grows evenly on the surface in normal condition, showing no intermixing of the titanium and silicon beyond the silicon layer.

  15. Dye Surface Coating Enables Visible Light Activation of TiO2 Nanoparticles Leading to Degradation of

    E-Print Network [OSTI]

    Brown, Eric

    Dye Surface Coating Enables Visible Light Activation of TiO2 Nanoparticles Leading to Degradation that an alizarin red S ~ARS! dye coating on TiO2 nanoparticles enables visible light activation coatings on TiO2 nanoparticles can serve to enhance imaging, by clearly showing that dye coatings on TiO2

  16. Course MA59800: Numerical Simulation in Applied Geophysics. From the Mesoscale to the Macroscale.

    E-Print Network [OSTI]

    Santos, Juan

    Course MA59800: Numerical Simulation in Applied Geophysics. From the Mesoscale to the Macroscale matrix properties, fine layering, frac- tures and craks at the mesoscale (on the order of centimeters

  17. Experimental Physical Sciences Vistas: MaRIE (draft)

    SciTech Connect (OSTI)

    Shlachter, Jack [Los Alamos National Laboratory

    2010-09-08T23:59:59.000Z

    To achieve breakthrough scientific discoveries in the 21st century, a convergence and integration of world-leading experimental facilities and capabilities with theory, modeling, and simulation is necessary. In this issue of Experimental Physical Sciences Vistas, I am excited to present our plans for Los Alamos National Laboratory's future flagship experimental facility, MaRIE (Matter-Radiation Interactions in Extremes). MaRIE is a facility that will provide transformational understanding of matter in extreme conditions required to reduce or resolve key weapons performance uncertainties, develop the materials needed for advanced energy systems, and transform our ability to create materials by design. Our unique role in materials science starting with the Manhattan Project has positioned us well to develop a contemporary materials strategy pushing the frontiers of controlled functionality - the design and tailoring of a material for the unique demands of a specific application. Controlled functionality requires improvement in understanding of the structure and properties of materials in order to synthesize and process materials with unique characteristics. In the nuclear weapons program today, improving data and models to increase confidence in the stockpile can take years from concept to new knowledge. Our goal with MaRIE is to accelerate this process by enhancing predictive capability - the ability to compute a priori the observables of an experiment or test and pertinent confidence intervals using verified and validated simulation tools. It is a science-based approach that includes the use of advanced experimental tools, theoretical models, and multi-physics codes, simultaneously dealing with multiple aspects of physical operation of a system that are needed to develop an increasingly mature predictive capability. This same approach is needed to accelerate improvements to other systems such as nuclear reactors. MaRIE will be valuable to many national security science challenges. Our first issue of Vistas focused on our current national user facilities (the Los Alamos Neutron Science Center [LANSCE], the National High Magnetic Field Laboratory-Pulsed Field Facility, and the Center for Integrated Nanotechnologies) and the vitality they bring to our Laboratory. These facilities are a magnet for students, postdoctoral researchers, and staff members from all over the world. This, in turn, allows us to continue to develop and maintain our strong staff across the relevant disciplines and conduct world-class discovery science. The second issue of Vistas was devoted entirely to the Laboratory's materials strategy - one of the three strategic science thrusts for the Laboratory. This strategy has helped focus our thinking for MaRIE. We believe there is a bright future in cutting-edge experimental materials research, and that a 21st-century facility with unique capability is necessary to fulfill this goal. The Laboratory has spent the last several years defining MaRIE, and this issue of Vistas presents our current vision of that facility. MaRIE will leverage LANSCE and our other user facilities, as well as our internal and external materials community for decades to come, giving Los Alamos a unique competitive advantage, advancing materials science for the Laboratory's missions and attracting and recruiting scientists of international stature. MaRIE will give the international materials research community a suite of tools capable of meeting a broad range of outstanding grand challenges.

  18. Metal-insulator-semiconductor structure on low-temperature grown GaAs M. Young, W. Li, and T. P. Ma

    E-Print Network [OSTI]

    Woodall, Jerry M.

    technique has been used to deposit high-quality insula- tors on Si,16 GaN,17 and GaP.18 It utilizes a high-speed jet of light carrier gases to transport depositing species onto the substrate to form insulator films-type substrate was chosen for potential n-channel de- vices. A 400 nm thick regular p-type GaAs epilayer doped

  19. High-rate and low-temperature synthesis of TiO2, TiN, and TiO2/TiN/TiO2 thin films and study of their optical and interfacial characteristics

    E-Print Network [OSTI]

    Boo, Jin-Hyo

    High-rate and low-temperature synthesis of TiO2, TiN, and TiO2/TiN/TiO2 thin films and study with unbalanced magnetrons, we deposited advanced inorganic functional thin films such as TiO2, TiN, and TiO2/Ti sputtering. The TiO2 101 and TiN 100 thin films were stoichiometric and polycrystalline but highly oriented

  20. Comment on "Magnetic Structure of Gd2Ti2O7"

    SciTech Connect (OSTI)

    Stewart, John Ross [ISIS Facility, Rutherford Appleton Laboratory; Ehlers, Georg [ORNL; Wills, A S [University College, London; Bramwell, S T [University College, London; Gardner, Jason [Indiana University

    2012-01-01T23:59:59.000Z

    M. W. Long and collaborators [ Phys. Rev. B 83 054422 (2011)] recently proposed magnetic structures for gadolinium titanate that differ from those previously reported by us [ J. R. Stewart, G. Ehlers, A. S. Wills, S. T. Bramwell and J. S. Gardner J. Phys.: Condens. Matter 16 L321 (2004)]. In this Comment, we show that the calculated structure factors, S(Q), of the newly proposed models are inconsistent with our neutron powder diffraction data. Long and colleagues were led to reconsider the magnetic structure of gadolinium titanate on the basis of a number of theoretical and experimental assumptions. We argue that these assumptions have no basis in fact and conclude that they provide no reason to doubt our published magnetic structures.

  1. A Theoretical Study on the Hydrogen Transport Mechanism in SrTiO3 Perovskite. II. Scandium

    E-Print Network [OSTI]

    Helgaker, Trygve

    at Titanium Site Taku Onishi*[a,b,c] and Trygve Helgaker[c] Hybrid Kohn­Sham calculations are performed at an oxygen site or a trivalent cation may be doped at a titanium site. In part I, we discussed nitro- gen-doping at an oxygen site in SrTiO3 perovskite. There are then two cases to consider. In one case, the doped nitrogen

  2. Aspects of the SrO-CuO-TiO2 Ternary System Related to the Deposition of SrTiO3 and Copper-Doped SrTiO3 Thin-Film Buffer Layers

    SciTech Connect (OSTI)

    A. Ayala

    2004-12-20T23:59:59.000Z

    YBa{sub 2}Cu{sub 3}O{sub 7-{delta}} (YBCO) coated conductors are promising materials for large-scale superconductivity applications. One version of a YBCO coated conductor is based on ion beam assisted deposition (IBAD) of magnesium oxide (MgO) onto polycrystalline metal substrates. SrTiO{sub 3} (STO) is often deposited by physical vapor deposition (PVD) methods as a buffer layer between the YBCO and IBAD MgO due to its chemical stability and lattice mismatch of only {approx}1.5% with YBCO. In this work, some aspects of the stability of STO with respect to copper (Cu) and chemical solution deposition of STO on IBAD MgO templates were examined. Solubility limits of Cu in STO were established by processing Cu-doped STO powders by conventional bulk preparation techniques. The maximum solubility of Cu in STO was {approx}1% as determined by transmission electron microscopy (TEM) and Rietveld refinements of x-ray diffraction (XRD) data. XRD analysis, performed in collaboration with NIST, on powder compositions on the STO/SrCuO{sub 2} tie line did not identify any ternary phases. SrCu{sub 0.10}Ti{sub 0.90}O{sub y} buffer layers were prepared by pulsed laser deposition (PLD) and CSD on IBAD MgO flexible metallic textured tapes. TEM analysis of a {approx}100 nm thick SrCu{sub 0.10}Ti{sub 0.90}O{sub y} buffer layer deposited by PLD showed a smooth Cu-doped STO/MgO interface. A {approx}600 nm thick YBCO film, deposited onto the SrCu{sub 0.10}Ti{sub 0.90}O{sub y} buffer by PLD, exhibited a T{sub c} of 87 K and critical current density (J{sub c}) of {approx}1 MA/cm{sup 2}. STO and Cu-doped STO thin films by CSD were {approx}30 nm thick. The in plane alignment (FWHM) after deposition of the STO improved by {approx}1{sup o} while it degraded by {approx}2{sup o} with the SrCu{sub 0.05}TiO{sub y} buffer. YBCO was deposited by PLD on the STO and SrCu{sub 0.05}TiO{sub y} buffers. The in plane alignment (FWHM) of the YBCO with the STO buffer layer slightly improved while that of the YBCO with the SrCu{sub 0.05}TiO{sub y} buffer layer remained constant. A goal of the CSD approach to fabrication of coated conductors is process simplicity. In this study, single layer textured films were obtained without a nucleating seed layer that has been deemed necessary by several investigators. These results indicate that Cu-doped STO buffer layers deposited by PLD or CSD are compatible with IBAD MgO and YBCO and that CSD is a viable approach to coated conductor fabrication.

  3. UNIVERSITY OF DUBLIN MA1212-1 TRINITY COLLEGE

    E-Print Network [OSTI]

    Karageorgis, Paschalis

    UNIVERSITY OF DUBLIN MA1212-1 TRINITY COLLEGE Faculty of Engineering, Mathematics and Science school of mathematics JF Maths/TP SF TSM Trinity Term 2013 MA1212 -- Linear Algebra II Wednesday, May 1

  4. UNIVERSITY OF DUBLIN MA1111-1 TRINITY COLLEGE

    E-Print Network [OSTI]

    Karageorgis, Paschalis

    UNIVERSITY OF DUBLIN MA1111-1 TRINITY COLLEGE Faculty of Engineering, Mathematics and Science school of mathematics JF Maths/TP/TSM Trinity Term 2013 MA1111 -- Linear Algebra I Monday, April 29 RDS

  5. On the preparation of TiAl alloy by direct reduction of the oxide mixtures in calcium chloride melt

    SciTech Connect (OSTI)

    Prabhat K. Tripathy; Derek J. Fray

    2011-11-01T23:59:59.000Z

    In recent years, TiAl-based intermetallic alloys are being increasingly considered for application in areas such as (i) automobile/transport sector (passenger cars, trucks and ships) (ii) aerospace industry (jet engines and High Speed Civil Transport propulsion system) and (iii) industrial gas turbines. These materials offer excellent (i) high temperature properties (at higher than 6000C) (ii) mechanical strength and (iii) resistance to corrosion and as a result have raised renewed interest. The combination of these properties make them possible replacement materials for traditional nickel-based super-alloys, which are nearly as twice as dense (than TiAl based alloys). Since the microstructures of these intermetallic alloys affect, to a significant extent, their ultimate performance, further improvements (by way of alteration/modification of these microstructures), have been the subject matter of intense research investigations. It has now been established that the presence of alloy additives, such as niobium, tantalum, manganese, boron, chromium, silicon, nickel and yttrium etc, in specific quantities, impart marked improvement to the properties, viz. fatigue strength, fracture toughness, oxidation resistance and room temperature ductility, of these alloys. From a number of possible alloy compositions, {gamma}-TiAl and Ti-Al-Nb-Cr have, of late, emerged as two promising engineering alloys/materials. . The conventional fabrication process of these alloys include steps such as melting, forging and heat treatment/annealing of the alloy compositions. However, an electrochemical process offers an attractive proposition to prepare these alloys, directly from the mixture of the respective oxides, in just one step. The experimental approach, in this new process, was, therefore, to try to electrochemically reduce the (mixed) oxide pellet to an alloy phase. The removal of oxygen, from the (mixed) oxide pellet, was effected by polarizing the oxide pellet against a graphite electrode in a pool of molten calcium chloride at a temperature of 9000C. The dominant mechanism of the oxygen removal was the ionization of oxygen followed by its subsequent discharge, as CO2/CO, at the anode surface. The removal of oxygen from the oxide mixture helped form the alloy in situ. The presentation shall cover the detailed experimental results pertaining to the preparation, evaluation and characterization of Ti-47Al-2Nb-2Cr (atom%) alloy.

  6. FuMA Tech GmbH | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are being directedAnnual SiteofEvaluating A PotentialJumpGermanFife EnergyFreight Best PracticeFrey|FrontierFuMA Tech

  7. EDeMa (Smart Grid Project) | 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 onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand JumpConceptual Model,DOE FacilityDimondale,South, NewDyer County,ECO2 AssetEDP Renewables NorthEDeMa

  8. DOE - Office of Legacy Management -- Norton Co - MA 12

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp - CT 0-01Naturita36NewNorton Co - MA 12

  9. DOE - Office of Legacy Management -- Tracerlab Inc - MA 11

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -K LeDowntown SiteTracerlab Inc - MA 11

  10. DOE - Office of Legacy Management -- Watertown Arsenal - MA 02

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -KWatertown Arsenal - MA 02 FUSRAP

  11. DOE - Office of Legacy Management -- Woburn Landfill - MA 07

    Office of Legacy Management (LM)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOn AprilA group currentBradleyTableSelling Corp -KWatertown Arsenal -Center - MA

  12. Data Update for Mt. Tom, Holyoke, MA August 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA August 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Elkinton Monthly Data Summary for August 2006 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  13. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA June 2005 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for June 2005 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59.2" N, 72

  14. Data Update for Mt. Tom, Holyoke, MA January 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA January 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for December 2005 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  15. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA May 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for May 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  16. Data Update for Mt. Tom, Holyoke, MA October 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA October 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Elkinton Monthly Data Summary for October 2006 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  17. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA July 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for July 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  18. Data Update for Mt. Tom, Holyoke, MA December 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA December 2005 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for December 2005 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  19. Data Update for Mt. Tom, Holyoke, MA October 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA October 2005 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for October 2005 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  20. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA July 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Elkinton Monthly Data Summary for July 2006 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  1. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA July 2005 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for July 2005 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59.2" N, 72

  2. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA March 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for March 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  3. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA May 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for May 2006 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59.2" N, 72

  4. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA April 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for April 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  5. Data Update for Mt. Tom, Holyoke, MA October 2007

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA October 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for October 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  6. Data Update for Mt. Tom, Holyoke, MA November 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA November 2005 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for November 2005 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  7. Data Update for Mt. Tom, Holyoke, MA January 2008

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA January 2008 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for January 2008 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  8. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA June 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for June 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  9. Data Update for Mt. Tom, Holyoke, MA January 2007

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA January 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for January 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  10. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA April 2008 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for April 2008 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  11. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA March 2008 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for March 2008 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  12. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA June 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Elkinton Monthly Data Summary for June 2006 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  13. Data Update for Mt. Tom, Holyoke, MA November 2006

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA November 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Elkinton Monthly Data Summary for November 2006 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  14. Data Update for Mt. Tom, Holyoke, MA February 2007

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA February 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for February 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  15. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA April 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for April 2006 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59.2" N, 72

  16. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA March 2006 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for March 2006 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59.2" N, 72

  17. Data Update for Mt. Tom, Holyoke, MA August 2005

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA August 2005 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Melissa Ray Monthly Data Summary for August 2005 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  18. Data Update for Mt. Tom, Holyoke, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA May 2008 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for May 2008 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  19. Data Update for Mt. Tom, Holyoke, MA August 2007

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Mt. Tom, Holyoke, MA August 2007 Prepared for Massachusetts Technology Collaborative 75 North Drive, Westborough, MA 01581 By Puneet Malhotra Monthly Data Summary for August 2007 This update summarizes the monthly data results for the Mt. Tom monitoring site in Holyoke, MA, at 42° 14' 59

  20. Economics & Finance MA or BSc (Single Honours Degrees)

    E-Print Network [OSTI]

    Brierley, Andrew

    88 Economics & Finance MA or BSc (Single Honours Degrees) Applied Economics Economics Financial Economics BA (International Honours Degrees) Economics See page 13 MA or BSc (Joint Honours Degrees) Economics and one of: Management Mathematics MA (Joint Honours Degrees) Economics and one of: Ancient

  1. redMaPPer IV: Photometric Membership Identification of Cluster Galaxies with 1% Precision

    E-Print Network [OSTI]

    Rozo, Eduardo; Becker, Matthew; Reddick, Rachel M; Wechsler, Risa H

    2014-01-01T23:59:59.000Z

    In order to study the galaxy population of galaxy clusters with photometric data one must be able to accurately discriminate between cluster members and non-members. The redMaPPer cluster finding algorithm treats this problem probabilistically. Here, we utilize SDSS and GAMA spectroscopic membership rates to validate the redMaPPer membership probability estimates for clusters with $z\\in[0.1,0.3]$. We find small - but correctable - biases, sourced by three different systematics. The first two were expected a priori, namely blue cluster galaxies and correlated structure along the line of sight. The third systematic is new: the redMaPPer template fitting exhibits a non-trivial dependence on photometric noise, which biases the original redMaPPer probabilities when utilizing noisy data. After correcting for these effects, we find exquisite agreement ($\\approx 1\\%$) between the photometric probability estimates and the spectroscopic membership rates, demonstrating that we can robustly recover cluster membership est...

  2. TiO2-modified Ag-CuO Reactive Air Brazes for Improved Wettability on Mixed Ionic/Electronic Conductors

    SciTech Connect (OSTI)

    Hardy, John S.; Weil, K. Scott; Kim, Jin Yong Y.; Thomsen, Ed C.; Darsell, Jens T.

    2005-03-01T23:59:59.000Z

    Mixed ionic/electronic conducting perovskite oxides such as lanthanum strontium cobalt ferrite (LSCF) are strong candidates for potential use in a number of electrochemical devices, including gas separation membranes and solid oxide fuel cells (SOFC). Underlying the excitement over the these novel ceramics is the engineering challenge of effectively incorporating them into practical devices. Taking full advantage of the unique properties of advanced ceramics such as mixed conducting oxides depends in large part on being able to develop reliable joining techniques. Earlier studies have indicated that Ag-CuO reactive air braze (RAB) compositions are effective in joining to LSCF. Meanwhile, it has been found that small additions of as little as 0.5 mol% titanium oxide to Ag-CuO RAB compositions cause a dramatic increase in the wettability of RAB on many oxide ceramic surfaces. Therefore the wettabilty of Ag-CuO-TiO2 brazes on LSCF substrates will be examined and the flexural strength, microstructure, and conductivity of joints in LSCF made using Ag-CuO-TiO2 brazes will be discussed. Long-term aging effects on conductivity and microstructure will also be presented.

  3. Experimental: Sample Preparation TiO2 compact (TiO2comp) anatase films (0.1

    E-Print Network [OSTI]

    state device based on the wealth of knowledge housed in the field of Dye Sensitized Solar Cells (20 min, 110 °C). Cell geometries : (1) ITO/TiO2comp/PbS/Pedot/Au (2) ITO/TiO2comp/TiO2nps and Development of Extremely Thin Absorber Solid State Solar Cells Matteo Biancardo*, Frederik Krebs The Danish

  4. Effect of conductive TiN buffer layer on the growth of stoichiometric VO{sub 2} films and the out-of-plane insulator–metal transition properties

    SciTech Connect (OSTI)

    Mian, Md. Suruz; Okimura, Kunio, E-mail: okifn@keyaki.cc.u-tokai.ac.jp [Graduate School of Science and Technology, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa 259-1292 (Japan)

    2014-07-15T23:59:59.000Z

    A TiN buffer film is used with a conductive interfacial layer for stoichiometric vanadium dioxide (VO{sub 2}) film growth, creating a layered device with a VO{sub 2} insulator–metal transition. Low-temperature growth (<250?°C) of the VO{sub 2} film on a Ti layer on a Si substrate is achieved using inductively coupled plasma-assisted sputtering. It is found that Ti diffusion and oxidation degrades the VO{sub 2} film quality at higher temperatures, but the introduction of a TiN buffer layer suppresses the degradation and enables growth of a stoichiometric VO{sub 2} film even at 400?°C. The high resistance of the VO{sub 2} film grown on the TiN layer suggests the benefit of using the intrinsic insulator–metal transition of VO{sub 2}. The voltage-triggered switching properties of the layered devices are examined, and the cause of the high out-of-plane resistance in this layered structure is discussed based upon the dependence of the initial resistance as a function the electrode area.

  5. Seoul National UniversitySeoul National University http://bp.snu.ac.kr1 The Effect of TiCl4-Treated TiO2

    E-Print Network [OSTI]

    Park, Byungwoo

    TiO2 Compact Layer on the Performance of Dye-Sensitized Solar Cell #12;Seoul National UniversitySeoul National University http://bp.snu.ac.kr Dye-Sensitized Solar Cell 2 Schematic Diagram of the Electron Flow by the TiO2 compact layer. Electrolyte Hydrolysis of TiCl4 Solution Dye-Coated TiO2 Back Electron Transfere

  6. Atomic and electronic structures of single-layer FeSe on SrTiO3(001): The role of oxygen deficiency

    SciTech Connect (OSTI)

    Bang, Junhyeok; Li, Zhi; Sun, Y. Y.; Samanta, Amit; Zhang, Y. Y.; Zhang, Wenhao; Wang, Lili; Chen, X.; Ma, Xucun; Xue, Q.-K.; Zhang, S. B.

    2013-06-01T23:59:59.000Z

    Using first-principles calculation, we propose an interface structure for single triple-layer FeSe on the SrTiO3(001) surface, a high-Tc superconductor found recently. The key component of this structure is the oxygen deficiency on the top layer of the SrTiO3 substrate, as a result of Se etching used in preparing the high-Tc samples. The O vacancies strongly bind the FeSe triple layer to the substrate giving rise to a (2×1) reconstruction, as observed by scanning tunneling microscopy. The enhanced binding correlates to the significant increase of Tc observed in experiment. The O vacancies also serve as the source of electron doping, which modifies the Fermi surface of the first FeSe layer by filling the hole pocket near the center of the surface Brillouin zone, as suggested from angle-resolved photoemission spectroscopy measurement.

  7. Ti (II) Mediated Reactions in Organic Chemistry

    E-Print Network [OSTI]

    Johnson, Jeff S.

    ' #12;Generation of Ti(II) from Ti(IV) · Bercaw accessed and characterized the first Ti'X -X Generation of Ti(II) via Reductive Alkylation · Ti(IV) converted to Ti(II) via reductive/Acetylene Functionalizations · Reductive Couplings #12;Advantages of Titanium · Titanium (IV) reagents are cheap and readily

  8. Thermal stability and oxidation resistance of TiCrAlYO coatings...

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

    stability and oxidation resistance of TiCrAlYO coatings on SS430 for solid oxide fuel cell interconnect applications. Thermal stability and oxidation resistance of TiCrAlYO...

  9. Structure, magnetic properties and magnetoelastic anisotropy in epitaxial Sr(Ti???Co?)O? films

    E-Print Network [OSTI]

    Bi, Lei

    We report the structure, magnetic properties and magnetoelastic anisotropy of epitaxial Sr(Ti???Co?)O? films grown on LaAlO? (001) and SrTiO? (001) substrates by pulsed laser deposition. Room temperature ferromagnetism was ...

  10. Effects of Nb doping level on the electronic transport, photoelectric effect and magnetoresistance across La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/Nb:SrTiO{sub 3} junctions

    SciTech Connect (OSTI)

    Wang, J. F., E-mail: jifewang@gmail.com [Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong); College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China); Jiang, Y. C.; Gao, J., E-mail: jugao@hku.hk [Department of Physics, The University of Hong Kong, Pokfulam Road (Hong Kong); Chen, M. G. [College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China)] [College of Science, China Jiliang University, Hangzhou, Zhejiang 310018 (China)

    2013-12-16T23:59:59.000Z

    Heterojunctions composed of La{sub 0.5}Ca{sub 0.5}MnO{sub 3} and Nb doped SrTiO{sub 3} were fabricated, and the effects of the Nb doping level on their electronic transport, photoelectric effect, and magnetoresistance were investigated. A lower doping concentration of Nb led to better rectifying properties and higher open circuit voltages. The I-V curves for La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/0.7?wt.?% Nb-SrTiO{sub 3} showed a negligible response to magnetic fields for all temperatures, whereas La{sub 0.5}Ca{sub 0.5}MnO{sub 3}/0.05?wt.?% Nb-SrTiO{sub 3} exhibited distinct magnetoresistance, which depended on both the bias voltage and temperature. These results are discussed with the assistance of conventional semiconductor theories.

  11. Thickness dependence of magnetoelectric response for composites of Pb(Zr{sub 0.52}Ti{sub 0.48})O{sub 3} films on CoFe{sub 2}O{sub 4} ceramic substrates

    SciTech Connect (OSTI)

    Wang, Jing, E-mail: wang-jing@nuaa.edu.cn; Zhu, Kongjun [State Key Laboratory of Mechanics and Control of Mechanical Structures, College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016 (China); Wu, Xia; Deng, Chaoyong [School of Electronics and Information Engineering, Guizhou University, Guiyang 550025 (China); Peng, Renci; Wang, Jianjun [School of Materials Science and Engineering, and State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084 (China)

    2014-08-15T23:59:59.000Z

    Using chemical solution spin-coating we grew Pb(Zr{sub 0.52}Ti{sub 0.48})O{sub 3} films of different thicknesses on highly dense CoFe{sub 2}O{sub 4} ceramics. X-ray diffraction revealed no other phases except Pb(Zr{sub 0.52}Ti{sub 0.48})O{sub 3} and CoFe{sub 2}O{sub 4}. In many of these samples we observed typical ferroelectric hysteresis loops, butterfly-shaped piezoelectric strains, and the magnetic-field-dependent magnetostriction. These behaviors caused appreciable magnetoelectric responses based on magnetic-mechanical-electric coupling. Our results indicated that the thickness of the Pb(Zr{sub 0.52}Ti{sub 0.48})O{sub 3} film was important in obtaining strong magnetoelectric coupling.

  12. Giant resonances in Ti-46,Ti-48

    E-Print Network [OSTI]

    Tokimoto, Y.; Lui, Y. -W; Clark, H. L.; John, B.; Chen, X.; Youngblood, David H.

    2006-01-01T23:59:59.000Z

    PHYSICAL REVIEW C 74, 044308 (2006) Giant resonances in 46,48Ti Y. Tokimoto, Y.-W. Lui, H. L. Clark, B. John,* X. Chen, and D. H. Youngblood Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA (Received 30 June 2006... parameter sets using electro- magnetic B(E2) values [14] and collective model transition potentials successfully reproduced the angular distributions of 0556-2813/2006/74(4)/044308(9) 044308-1 ?2006 The American Physical Society TOKIMOTO, LUI, CLARK, JOHN...

  13. Fusion materials irradiations at MaRIE's fission fusion facility

    SciTech Connect (OSTI)

    Pitcher, Eric J [Los Alamos National Laboratory

    2010-10-06T23:59:59.000Z

    Los Alamos National Laboratory's proposed signature facility, MaRIE, will provide scientists and engineers with new capabilities for modeling, synthesizing, examining, and testing materials of the future that will enhance the USA's energy security and national security. In the area of fusion power, the development of new structural alloys with better tolerance to the harsh radiation environments expected in fusion reactors will lead to improved safety and lower operating costs. The Fission and Fusion Materials Facility (F{sup 3}), one of three pillars of the proposed MaRIE facility, will offer researchers unprecedented access to a neutron radiation environment so that the effects of radiation damage on materials can be measured in-situ, during irradiation. The calculated radiation damage conditions within the F{sup 3} match, in many respects, that of a fusion reactor first wall, making it well suited for testing fusion materials. Here we report in particular on two important characteristics of the radiation environment with relevancy to radiation damage: the primary knock-on atom spectrum and the impact of the pulse structure of the proton beam on temporal characteristics of the atomic displacement rate. With respect to both of these, analyses show the F{sup 3} has conditions that are consistent with those of a steady-state fusion reactor first wall.

  14. Magneto-transport in LaTi{sub 1?x}Mn{sub x}O{sub 3}/SrTiO{sub 3} oxide heterostructures

    SciTech Connect (OSTI)

    Kumar, Pramod, E-mail: pramodnpl2011@gmail.com; Dogra, Anjana, E-mail: pramodnpl2011@gmail.com; Budhani, R. C., E-mail: pramodnpl2011@gmail.com [Quantum Phenomena and Applications Division, National Physical Laboratory (CSIR), Dr. K.S. Krishnan Marg, New Delhi-110012 (India)

    2014-04-24T23:59:59.000Z

    We report the growth of ultrathin film of Mn doped LaTiO{sub 3} on TiO{sub 2} terminated SrTiO{sub 3} (001) substrate by pulsed laser deposition (PLD) and their electrical transport characteristics including magnetoresistance (MR). Though the replacement of Mn in LaTiO{sub 3} at the Ti site in dilute limit does not affect the metallic behaviour of films but variation in resistance is observed. Normalised resistance behaviour is explained on the basis of variation in charge carriers and increased interaction between Mn atoms in the system under investigation.

  15. The effect of electronegative difference on the electronic structure and visible light photocatalytic activity of N-doped anatase TiO{sub 2} by first-principles calculations

    SciTech Connect (OSTI)

    Zhao Dongqiu; Huang Xiaowei; Tian Baoli; Zhou Shaomin; Li Yuncai; Du Zuliang [Key Lab for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004 (China)

    2011-04-18T23:59:59.000Z

    The effect of electronegative difference between nitrogen and oxygen on electronic properties of N-doped anatase TiO{sub 2} has been studied using first-principles calculations. The results indicate that the valence band maximum (VBM) shifts to high energy by 0.27 eV and the band gap states composed of N 2p, O 2p, and Ti 3d states are formed through the three states entering into the gap after N doping. The interactions of three states widen and delocalize the band gap states. The raised VBM and the wide band gap states can improve the visible light photocatalytic activity.

  16. A=16Mg (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07) (See Energy93TI07) (Not observed)

  17. A=16O (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07) (See77AJ02) (See93TI07) (See Energy

  18. A=16Si (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07) (See77AJ02) (See93TI07)

  19. A=17Al (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07) (See77AJ02) (See93TI07)Al

  20. A=17Be (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07) (See77AJ02)6AJ04)93TI07) (Not

  1. A=17He (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07)71AJ02) (Not86AJ04) (Not93TI07) (Not

  2. A=17Mg (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07)71AJ02) (Not86AJ04)Mg (1993TI07)

  3. A=17Na (1993TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01) (Not6AJ01)93TI07)71AJ02)71AJ02) (See93TI07) (Not

  4. A=18He (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not observed) See72AJ02)72AJ02) (See95TI07)

  5. A=18Li (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not observed) See72AJ02)72AJ02) (See95TI07)Li

  6. A=18Mg, etc. (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not observed) See72AJ02)72AJ02)95TI07) (Not

  7. A=18N (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not observed)95TI07) (See Energy Level

  8. A=19He (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02) (Not72AJ02) (See Energy95TI07)

  9. A=19Li (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02) (Not72AJ02) (See95TI07) (Not

  10. A=19Mg (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02) (Not72AJ02) (See95TI07)83AJ01)Mg

  11. A=19Na (1995TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02) (Not72AJ02)Mg,3AJ01) (See95TI07)

  12. A=20Al, etc. (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02)7AJ02) (See72AJ02)98TI06) (Not

  13. A=20B (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02)7AJ02)98TI06) (Not observed) The

  14. A=20C (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02)7AJ02)98TI06) (Not3AJ01)

  15. A=20F (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02)7AJ02)98TI06)78AJ03)

  16. A=20Li (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07) (Not87AJ02)7AJ02)98TI06)78AJ03)72AJ02)

  17. A=20N (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the Isobar Diagram for3AJ01)98TI06)

  18. A=20Ne (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the Isobar72AJ02) (See98TI06) (See

  19. A=20O (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06) (See Energy Level

  20. A=20n (1998TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06) (See Energy7AJ02)

  1. A=3H (1987TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06) (See

  2. A=3He (1987TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06) (See2010PU04)

  3. A=3Li (1987TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)

  4. A=3n (1987TI07)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)2010PU04) GENERAL:

  5. A=4H (1992TI02)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)2010PU04)4

  6. A=4n (1992TI02)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)2010PU04)4He

  7. A=5Be (2002TI10)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See the98TI06)2010PU04)4He5

  8. A=5He (2002TI10)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See8AJ01) The 9Be(11B,84AJ01)2002TI10)

  9. A=5n (2002TI10)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02) (See8AJ01) The66LA04)74AJ01)2002TI10)

  10. A=6n (2002TI10)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02)74AJ01) (Not59AJ76) (See2002TI10) (Not

  11. A=7B (2002TI10)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02)74AJ01) (Not59AJ76)2002TI10) (See the

  12. A=7Li (2002TI10)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less2012KE01)93TI07)7AJ02)74AJ01)59AJ76) (See74AJ01)2002TI10) (See

  13. A=9C (2004TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032)8Li (59AJ76) (See the Energy Level Diagram2004TI06)2004TI06) (See

  14. A=10Li (2004TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober2004TI06) (See8AJ01)2004TI06) (See Energy

  15. A=10N (2004TI06)

    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: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645U.S. DOE Office of ScienceandMesa del(ANL-IN-03-032) -Less isNFebruaryOctober2004TI06) (See8AJ01)2004TI06)8AJ01)

  16. A Study of the Relationship Between Levels of Technology Implementation (LoTi) and Student Performance on Texas Assessment of Knowledge and Skills (TAKS) Scores

    E-Print Network [OSTI]

    Berkeley-Jones, Catherine Spotswood

    2012-10-19T23:59:59.000Z

    The purpose of this study was to examine teacher Levels of Technology Implementation (LoTi) self-ratings and student Texas Assessment of Knowledge and Skills (TAKS) scores. The study assessed the relationship between LoTi ratings and TAKS scores...

  17. Guided wave absorption and uorescence in epitaxial Er:BaTiO3 on MgO D.M. Gilla,*, G.M. Fordb

    E-Print Network [OSTI]

    Ho, Seng-Tiong

    . Keywords: Er:BaTiO3; Fluorescence; Luminescence 1. Introduction The development of low-cost composite waveguides fabricated in erbium-doped thin-®lm epitaxial BaTiO3. Luminescence transient measurements indicate strategies toward the realization of this type of opto-electronic circuit. Proposed designs of hybrid opto

  18. Mechanical characterization and comparison of different NiTi/silicone rubber interfaces

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Mechanical characterization and comparison of different NiTi/silicone rubber interfaces T. Rey(1 on the mechanical resistance of interface between wires of NiTi shape memory alloy and silicone rubber. Three of exposure to the plasma alone get the debonding force higher. Consequently, NiTi/silicone rubber interface

  19. Hybrid Carbon Nanotubes-TiO2 Photoanodes for High Efficiency Dye-Sensitized Solar Cells

    E-Print Network [OSTI]

    Hybrid Carbon Nanotubes-TiO2 Photoanodes for High Efficiency Dye-Sensitized Solar Cells Kadiatou photoanodes for dye- sensitized solar cells (DSCs), based on nanocrystalline TiO2 with limited addition applied (i.e., soaking in TiCl4 to boost open circuit photovoltage). INTRODUCTION Dye-sensitized solar

  20. Research on the effect of crystal structures on W-TiO{sub 2} nanotube array photoelectrodes by theoretical and experimental methods

    SciTech Connect (OSTI)

    Xin, Yanjun [College of Resource and Environment, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109 (China) [College of Resource and Environment, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109 (China); State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Department of Environmental Science and Engineering Harbin Institute of Technology, Huanghe Road 73, Nangang District, Harbin 150090 (China); Wang, Yicheng; Ma, Dong [College of Resource and Environment, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109 (China)] [College of Resource and Environment, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109 (China); Liu, Huiling [State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Department of Environmental Science and Engineering Harbin Institute of Technology, Huanghe Road 73, Nangang District, Harbin 150090 (China)] [State Key Laboratory of Urban Water Resources and Environment (SKLUWRE), Department of Environmental Science and Engineering Harbin Institute of Technology, Huanghe Road 73, Nangang District, Harbin 150090 (China); Cheng, Wei [Library, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109 (China)] [Library, Qingdao Agricultural University, Changcheng Road 700, Chengyang District, Qingdao 266109 (China)

    2013-08-28T23:59:59.000Z

    W-doped/undoped TiO{sub 2} nanotube array (TNAs) photoelectrodes with different nanostructures were successfully fabricated using the anodization method. Their morphology and characteristics were studied using scanning electron microscopy (SEM), energy dispersive X-ray (EDX), and ultra violet/visible light diffuse reflectance spectra (UV/vis/DRS). Their electronic structure and optical properties were studied by means of first-principle. Photocatalytic (PC) performance of W-TNAs photoelectrodes with different crystal structures was evaluated using the decomposition rates of Rhodamine B (Rh.B) under xenon light illumination. The results demonstrated that W substituting Ti broadened the width of conduction band (CB) and valence band (VB) of anatase and rutile TiO{sub 2}, reduced the band gap of rutile TiO{sub 2} and even caused its red-shift. W incorporated into TNAs photoelectrodes extended light absorption threshold and enhanced its utilization of solar light and PC activity, particularly, the PC performance of W-TNAs photoelectrodes with mixed crystal and rutile crystal structure.

  1. MA598: Modeling and Computation in Optics and Electromagnetics

    E-Print Network [OSTI]

    2010-08-24T23:59:59.000Z

    MA598: Modeling and Computation in Optics and Electromagnetics. Instructor: Peijun Li, office: Math 440, phone: 49-40846, e-mail: lipeijun@math.purdue.edu.

  2. MA692: Modeling and Computation in Optics and Electromagnetics

    E-Print Network [OSTI]

    2012-08-14T23:59:59.000Z

    MA692: Modeling and Computation in Optics and Electromagnetics. Instructor: Peijun Li, office: Math 440, phone: 49-40846, e-mail: lipeijun@math.purdue.edu.

  3. MA 16020 – EXAM FORMULAS THE SECOND DERIVATIVE TEST ...

    E-Print Network [OSTI]

    2014-08-12T23:59:59.000Z

    MA 16020 – EXAM FORMULAS. THE SECOND DERIVATIVE TEST. Suppose f is a function of two variables x and y, and that all the second-order partial ...

  4. The structure of ordered Au films on TiOx M.S. Chen, K. Luo, D. Kumar, W.T. Wallace, C.-W. Yi, K.K. Gath, D.W. Goodman *

    E-Print Network [OSTI]

    Goodman, Wayne

    The structure of ordered Au films on TiOx M.S. Chen, K. Luo, D. Kumar, W.T. Wallace, C.-W. Yi, K.K-welded to the backside of the sample. The XPS data were collected using a Mg Ka source with an incident angle of 45

  5. Epitaxial Ba{sub 2}IrO{sub 4} thin-films grown on SrTiO{sub 3} substrates by pulsed laser deposition

    SciTech Connect (OSTI)

    Nichols, J., E-mail: john.nichols@uky.edu; Korneta, O. B.; Terzic, J.; Cao, G.; Brill, J. W.; Seo, S. S. A. [Department of Physics and Astronomy, University of Kentucky, Lexington, Kentucky 40506 (United States)

    2014-03-24T23:59:59.000Z

    We have synthesized epitaxial Ba{sub 2}IrO{sub 4} (BIO) thin-films on SrTiO{sub 3} (001) substrates by pulsed laser deposition and studied their electronic structure by dc-transport and optical spectroscopic experiments. We have observed that BIO thin-films are insulating but close to the metal-insulator transition boundary with significantly smaller transport and optical gap energies than its sister compound, Sr{sub 2}IrO{sub 4}. Moreover, BIO thin-films have both an enhanced electronic bandwidth and electronic-correlation energy. Our results suggest that BIO thin-films have great potential for realizing the interesting physical properties predicted in layered iridates.

  6. The role of molybdenum additions and prior deformation on acicular ferrite formation in microalloyed Nb-Ti low-carbon line-pipe steels

    SciTech Connect (OSTI)

    Tang Zhenghua [Department of Materials Science and Metallurgical Engineering, University of Pretoria, Pretoria 0002 (South Africa)], E-mail: n22323784@yahoo.com; Stumpf, Waldo [Department of Materials Science and Metallurgical Engineering, University of Pretoria, Pretoria 0002 (South Africa)

    2008-06-15T23:59:59.000Z

    Microstructures in Nb-Ti-microalloyed line-pipe steels with various molybdenum additions, consisted mostly of acicular ferrite plus polygonal ferrite after hot rolling and rapid cooling. Structure-sensitive surface relief after etching on shadowed extraction replicas, allowed quantification of the acicular and polygonal ferrite contents. Continuous cooling transformation diagrams of two alloys, one Mo-free and the other containing 0.22% Mo, were determined for cooling rates from 0.1 to 40 deg. C s{sup -1} without and with prior deformation of the austenite below the nil-recrystallisation temperature. Molybdenum additions slightly enhanced the acicular ferrite formation in the strain-free austenite whereas prior deformation had a much greater effect, and strongly promoted acicular ferrite formation in both alloys. Thin foil electron microscopy of acicular ferrite in these low-inclusion content alloys showed a preference for parallel acicular ferrite laths with less 'chaotically' nucleated laths.

  7. Strain Accommodation By Facile WO6 Octahedral Distortion and Tilting During WO3 Heteroepitaxy on SrTiO3(001)

    SciTech Connect (OSTI)

    Du, Yingge; Gu, Meng; Varga, Tamas; Wang, Chong M.; Bowden, Mark E.; Chambers, Scott A.

    2014-08-27T23:59:59.000Z

    In this paper, we show that compared to other BO6 octahedra in ABO3 structured perovskite oxides, the WO6 octahedra in tungsten trioxide (WO3) can withstand a much larger degree of distortion and tilting to accommodate interfacial strain, which in turn strongly impact the nucleation, structure, and defect formation during the epitaxial growth of WO3 on SrTiO3(001). A meta-stable tetragonal phase can be stabilized by epitaxy and a thickness dependent phase transition (tetragonal to monoclinic) is observed. In contrast to misfit dislocations to accommodate the interfacial stain, the facial WO6 octahedral distortion and tilting give rise to three types of planar defects that affect more than 15 monolayers from the interface. These atomically resolved, unusual interfacial defects may significantly alter the electronic, electrochromic, and mechanical properties of the epitaxial films.

  8. Microstructural study and densification analysis of hot work tool steel matrix composites reinforced with TiB{sub 2} particles

    SciTech Connect (OSTI)

    Fedrizzi, A., E-mail: anna.fedrizzi@ing.unitn.it [Department of Industrial Engineering, University of Trento, Via Mesiano 77, 38123 Trento (Italy); Pellizzari, M. [Department of Industrial Engineering, University of Trento, Via Mesiano 77, 38123 Trento (Italy); Zadra, M. [K4Sint, Start-up of the University of Trento, Viale Dante 300, 38057 Pergine Valsugana (Italy); Marin, E. [Department of Chemistry, Physics and Environment, University of Udine, Via Cotonificio 108, 33100 Udine (Italy)

    2013-12-15T23:59:59.000Z

    Hot work tool steels are characterized by good toughness and high hot hardness but are less wear resistant than other tooling materials, such as high speed steel. Metal matrix composites show improved tribological behavior, but not much work has been done in the field of hot work tool steels. In this paper TiB{sub 2}-reinforced hot work tool steel matrix composites were produced by spark plasma sintering (SPS). Mechanical alloying (MA) was proposed as a suited process to improve the composite microstructure. Density measurements and microstructure confirmed that MA promotes sintering and produces a fine and homogeneous dispersion of reinforcing particles. X-ray diffraction patterns of the sintered composites highlighted the formation of equilibrium Fe{sub 2}B and TiC, as predicted by thermodynamic calculations using Thermo-Calc® software. Scanning electron microscopy as well as scanning Kelvin probe force microscopy highlighted the reaction of the steel matrix with TiB{sub 2} particles, showing the formation of a reaction layer at the TiB{sub 2}-steel interface. Phase investigations pointed out that TiB{sub 2} is not chemically stable in steel matrix because of the presence of carbon even during short time SPS. - Highlights: • TiB{sub 2} reinforced steel matrix composites were produced by spark plasma sintering. • TiB{sub 2} was successfully dispersed in the steel matrix by mechanical alloying. • Steel and TiB{sub 2} react during sintering forming equilibrium Fe{sub 2}B and TiC. • The new phases were investigated by means of AFM, Volta potential and XRD analyses.

  9. MA and Ph.D. in Applied Anthropology GRADUATE INTERNSHIP

    E-Print Network [OSTI]

    Escher, Christine

    MA and Ph.D. in Applied Anthropology GRADUATE INTERNSHIP Description Students enrolled in the MA or Ph.D. in Applied Anthropology programs must complete a graduate internship with approved professional-supervision. The purpose of this internship is to give students practical training with the guidance of an internship

  10. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA July 2006 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA the next service visit. Monthly Data Time Series Seen below is a graph of wind speed at Thompson Island

  11. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA March 2007 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA speed at Thompson Island for the month of March 2007, at the highest anemometer height of 40 m. #12;

  12. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA May 2008 Prepared for Massachusetts Technology summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA, at 42° 18 below is a graph of wind speed at Thompson Island for the month of May 2008, at the highest anemometer

  13. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA May 2006 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA the next site visit. · Monthly Data Time Series Seen below is a graph of wind speed at Thompson Island

  14. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA March 2006 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA the spring of 2006. · Monthly Data Time Series Seen below is a graph of wind speed at Thompson Island

  15. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA April 2008 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA to this report if and when this happens. Monthly Data Time Series Seen below is a graph of wind speed at Thompson

  16. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA July 2007 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA speed at Thompson Island for the month of July 2007, at the highest anemometer height of 40 m. #12;

  17. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA June 2008 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA to the sensor cables. Monthly Data Time Series Seen below is a graph of wind speed at Thompson Island

  18. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA April 2007 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA speed at Thompson Island for the month of April 2007, at the highest anemometer height of 40 m. #12;

  19. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA June 2006 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA the next service visit. · Monthly Data Time Series Seen below is a graph of wind speed at Thompson Island

  20. Data Update for Thompson Island, Boston Harbor, MA Prepared for

    E-Print Network [OSTI]

    Massachusetts at Amherst, University of

    Data Update for Thompson Island, Boston Harbor, MA April 2006 Prepared for Massachusetts Technology This update summarizes the monthly data results for the Thompson Island monitoring site in Boston Harbor, MA the next service visit. · Monthly Data Time Series Seen below is a graph of wind speed at Thompson Island