Sample records for nano pico femto

  1. Nano-scale positioning, control and motion planning in hard disk drives

    E-Print Network [OSTI]

    Boettcher, Uwe

    2011-01-01T23:59:59.000Z

    OF CALIFORNIA, SAN DIEGO Nano-scale Positioning, Control andABSTRACT OF THE DISSERTATION Nano-scale Positioning, Controlmm) height (mm) mini micro nano pico femto Figure 2.8:

  2. Femto-photography: capturing and visualizing the propagation of light

    E-Print Network [OSTI]

    Velten, Andreas

    We present femto-photography, a novel imaging technique to capture and visualize the propagation of light. With an effective exposure time of 1.85 picoseconds (ps) per frame, we reconstruct movies of ultrafast events at ...

  3. Controlled Dispensing and Mixing of Pico- to Nanoliter Volumes...

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

    Dispensing and Mixing of Pico- to Nanoliter Volumes Using On-Demand Droplet-Based Microfluidics. Controlled Dispensing and Mixing of Pico- to Nanoliter Volumes Using On-Demand...

  4. Dmarche qualit au sein d'un laboratoire de recherche du CNRS: FEMTO-ST

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    également lancés dans la mise en place de la norme NF EN ISO 9001 afin d'obtenir une certification : recherche, qualité, laboratoires, label Carnot, ISO 9001, ISO/CEI 17025, Université de Franche-Comté, FEMTO décennies des laboratoires accrédités par le COFRAC selon le référentiel NF EN ISO/CEI 17025. Ainsi, le

  5. Activit bolomtres pour le 30m Pico Veleta

    E-Print Network [OSTI]

    Leclercq, Samuel

    Activité bolomètres pour le 30m à Pico Veleta Samuel Leclercq Journal-club IRAM 13/06/07 #12;Menu = puissance si faible que plusieurs sources apparaissent au même endroit · Bruit thermodynamique (Johnson

  6. nano | EMSL

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

    nano nano Leads No leads are available at this time. Molecular Selectivity of Brown Carbon Chromophores. Abstract: Complementary methods of high-resolution mass spectrometry and...

  7. Microbiological, chemical, and sensory quality changes in Pico de gallo as affected by gamma radiation

    E-Print Network [OSTI]

    Miller, Gerald Howard

    1994-01-01T23:59:59.000Z

    This study was undertaken to gain a greater understanding of the effects of gamma radiation and storage at 2'C on the microbiological, sensorial and chemical quality of pico de gallo. Samples of pico de gallo were exposed to cobalt'o at a dose of I...

  8. EMSL - nano

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

    nano en Molecular Selectivity of Brown Carbon Chromophores. http:www.emsl.pnl.govemslwebpublicationsmolecular-selectivity-brown-carbon-chromophores

  9. Nano Facts

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the Contributions andData andFleet TestAccounts andThe Role of MesoscaleNancyNancyNano

  10. | Link to Us | or Ads by Google Biomedical Nano Sensor Review Nano Nano Market Car Nano

    E-Print Network [OSTI]

    Rogers, John A.

    | Link to Us | or Ads by Google Biomedical Nano Sensor Review Nano Nano Market Car Nano Printer are important for energy techno accurate sensors for hydrogen. These structures were developed from a concept Glass From Sugar (but Hold the Sand) Posted: Apr 3rd, 2007 Atomistic model helps students visualize

  11. Nano Fab Lab, Stockholm Sweden The Albanova Nano Fabrication Facility

    E-Print Network [OSTI]

    Haviland, David

    Nano Fab Lab, Stockholm Sweden The Albanova Nano Fabrication Facility Nano technology for basic research and small commercial enterprises Director: Prof. David Haviland #12;Nano Fab Lab, Stockholm Sweden Nano-Lab Philosophy · Nanometer scale patterning and metrology · Broad spectrum of user research

  12. Integrated Micro Nano Systems Integrated Micro Nano Systems

    E-Print Network [OSTI]

    Al Hanbali, Ahmad

    #12;Integrated Micro Nano Systems 2 #12;Integrated Micro Nano Systems 3 Val Jones (Ed.) Symposium on Integrated Micro Nano Systems: Convergence of bio and nanotechnologies, Enschede, The Netherlands, June 2006 Micro Nano Systems 4 #12;Integrated Micro Nano Systems 5 Preface In order to explore the convergence

  13. Nano Research Facility Lab Safety Manual Nano Research Facility

    E-Print Network [OSTI]

    Subramanian, Venkat

    1 Nano Research Facility Lab Safety Manual Nano Research Facility: Weining Wang Office: Brauer rules and procedures (a) Accidents and spills for chemicals Not containing Nano-Materials Spills of non for chemicals Containing Nano-Materials In a fume hood small spills of nano-materials in a liquid may

  14. USC Nano Center Poster Session

    E-Print Network [OSTI]

    Davis, James P.

    USC Nano Center Poster Session 19 April 2002 Nano-scale VLSI Design: A Significant Paradigm Shift The recent progression of events in nano-technology, from nanotubes to nano- transistors, begs a basic will the changes in underlying device materials theory of nano-scale electronics affect ways in which we currently

  15. Nano-SIMS | EMSL

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

    new-generation ion microprobe extends high spatial resolution secondary ion mass spectrometry (NanoSIMS) analysis to extremely small areas (down to 50 nm) and volumes while...

  16. 78.1: Ultra Compact Polarization Recycling System for White Light LED based Pico-Projection System

    E-Print Network [OSTI]

    78.1: Ultra Compact Polarization Recycling System for White Light LED based Pico-Projection System polarization recycling system, for white light LED based projectors, is proposed. White light LED is applied. In this paper, we propose an ultra compact polarization recycling system for white light LED based projection

  17. Modelization and Simulation of Nano Devices in nano calculus

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Modelization and Simulation of Nano Devices in nano calculus A. Credi1 , M. Garavelli1 , C. Laneve2, Paris Abstract. We develop a process calculus ­ the nano calculus ­ for modeling, analyzing and predicting the properties of molecular devices. The nano calculus is equipped with a simple stochastic model

  18. Member News Nano News Press Releases

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    NanoNEWS Member News Nano News Press Releases Nano Global News Nano Reports Nano Conferences", Exploring Matter with Synchrotron Light" and "Exploring Matter with Neutrons" by ordering from here. Nano. Send your Press R Judith.LightFeather@TNTG.org 14 Oct 2006 Researchers develop bistable nano switch

  19. Nano-composite materials

    DOE Patents [OSTI]

    Lee, Se-Hee; Tracy, C. Edwin; Pitts, J. Roland

    2010-05-25T23:59:59.000Z

    Nano-composite materials are disclosed. An exemplary method of producing a nano-composite material may comprise co-sputtering a transition metal and a refractory metal in a reactive atmosphere. The method may also comprise co-depositing a transition metal and a refractory metal composite structure on a substrate. The method may further comprise thermally annealing the deposited transition metal and refractory metal composite structure in a reactive atmosphere.

  20. Self-Organization Nano-Computation

    E-Print Network [OSTI]

    Wang, Xiaorui "Ray"

    Self-Organization for Nano-Computation and Nano-Assembly Bruce J. MacLennan Dept. of Computer Science University of Tennessee, Knoxville #12;6 March 2007 Self-Organization for Nano- Computation & Nano, or ­ inspired by that occurring in nature formal material #12;6 March 2007 Self-Organization for Nano

  1. Nano-Machines Achieve Huge Mechanical Breakthrough

    E-Print Network [OSTI]

    Leigh, David A.

    NANO TECH Nano-Machines Achieve Huge Mechanical Breakthrough Dublin, Ireland (SPX) Sep 08, 2005 that use molecular 'nano'-machines of this kind to help perform physical tasks. Nano-machines could also owners set to return to battered Orleans l Six dead, two missing after heavy rains hit Page 1 of 3Nano

  2. Nano-Optoelectronic Integration on Silicon

    E-Print Network [OSTI]

    Chen, Roger

    2012-01-01T23:59:59.000Z

    Crystal Si Nanopillars, Nano Lett. , vol. 10, no. 11, pp.?V Nanowires on Silicon, Nano Letters, vol. 4, no. 10, pp.and nanoribbon lasers, Nano Letters, vol. 4, no. 2, pp.

  3. Nano-Punk For Tomorrow's People

    E-Print Network [OSTI]

    Newfield, Chris

    2006-01-01T23:59:59.000Z

    Nano-Punk for Tomorrows People By Christopher NewfieldMikhail Rocos NBIC (nano- bio-info-cognitive) convergenceset in a Victorian-style nano era. Why Victorian? Perhaps

  4. Electrospray neutralization process and apparatus for generation of nano-aerosol and nano-structured materials

    DOE Patents [OSTI]

    Bailey, Charles L. (Cross Junction, VA); Morozov, Victor (Manassas, VA); Vsevolodov, Nikolai N. (Kensington, MD)

    2010-08-17T23:59:59.000Z

    The claimed invention describes methods and apparatuses for manufacturing nano-aerosols and nano-structured materials based on the neutralization of charged electrosprayed products with oppositely charged electrosprayed products. Electrosprayed products include molecular ions, nano-clusters and nano-fibers. Nano-aerosols can be generated when neutralization occurs in the gas phase. Neutralization of electrospan nano-fibers with molecular ions and charged nano-clusters may result in the formation of fibrous aerosols or free nano-mats. Nano-mats can also be produced on a suitable substrate, forming efficient nano-filters.

  5. Controlled Dispensing and Mixing of Pico- to Nanoliter Volumes Using On-Demand Droplet-Based Microfluidics

    SciTech Connect (OSTI)

    Sun, Xuefei; Tang, Keqi; Smith, Richard D.; Kelly, Ryan T.

    2013-07-08T23:59:59.000Z

    We present an integrated droplet-on-demand microfluidic platform for dispensing, mixing, incubating, extracting and analyzing by mass spectrometry pico- to nanoliter sized droplets. Droplet generation is accomplished using computer-controlled pneumatic valves. Controlled actuation of valves for different aqueous streams enables controlled dosing and rapid mixing of reagents within droplets in the droplet generation area or in a region with widening channel cross-section. Following incubation, which takes place while droplets travel in the oil stream, the droplet contents are extracted to an aqueous channel for subsequent ionization at an integrated nanoelectrospray emitter. As an initial demonstration of the platform, rapid enzymatic digestions of a model protein are performed in droplets and detected on-line by nanoelectrospray ionization mass spectrometry.

  6. Phase field simulation of kinetic superheating and melting of aluminum nanolayer irradiated by pico- and femtosecond laser

    SciTech Connect (OSTI)

    Seok Hwang, Yong [Department of Aerospace Engineering, Iowa State University, Ames, Iowa 50011 (United States)] [Department of Aerospace Engineering, Iowa State University, Ames, Iowa 50011 (United States); Levitas, Valery I. [Departments of Aerospace Engineering, Mechanical Engineering, and Material Science and Engineering, Iowa State University, Ames, Iowa 50011 (United States)] [Departments of Aerospace Engineering, Mechanical Engineering, and Material Science and Engineering, Iowa State University, Ames, Iowa 50011 (United States)

    2013-12-23T23:59:59.000Z

    Two melting mechanisms are reproduced and quantified for superheating and melting of Al nanolayer irradiated by pico- and femtosecond laser using the advanced phase-field approach coupled with mechanics and a two-temperature model. At heating rates Q?79.04 K/ps induced by picosecond laser, two-sided barrierless surface melting forms two solid-melt interfaces, which meet near the center of a sample. The temperature for surface melting is a linear function, and for complete melting it is a cubic function, of logQ. At Q?300 K/ps induced by femtosecond laser, barrierless and homogeneous melting (without nucleation) at the sample center occurs faster than due to interface propagation. Good agreement with experimental melting time was achieved in a range of 0.95?Q?1290 K/ps without fitting of material parameters.

  7. Nano-SIMS | EMSL

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recoveryLaboratory | NationalJohn F. Geisz,AerialStaff NUG 2012NakayasuJ.Nano-SIMS

  8. Bio2Nano

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScienceCareers Apply for aCould WorkVehicles and Fuels FindBio2Nano

  9. EE 337 Engineering micro and nano-systems EE 337 Engineering micro and nano-systems

    E-Print Network [OSTI]

    Levi, Anthony F. J.

    EE 337 Engineering micro and nano-systems EE 337 Engineering micro and nano-systems A.F.J. Levi as an introduction to micro and nano-technology, methods to control and exploit the new degrees of freedom delivered by nano-science, and the integration of micro and nano-technology into systems. It is a hands

  10. EE 238 Engineering nano-systems EE 238 Engineering nano-systems

    E-Print Network [OSTI]

    Levi, Anthony F. J.

    EE 238 Engineering nano-systems Page 1 EE 238 Engineering nano-systems A.F.J. Levi Spring 2009, OHE This course is designed as an introduction to nano-technology, methods to control and exploit the new degrees of freedom delivered by nano-science, and the integration of nano-technology into systems. It is a hands

  11. Synthesis and Properties of Nano Zeolitic Imidazolate Frameworks...

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

    Properties of Nano Zeolitic Imidazolate Frameworks. Synthesis and Properties of Nano Zeolitic Imidazolate Frameworks. Abstract: Nano sized zeolitic imidazolate frameworks nZIF-8...

  12. *SINAM NANO SEMINAR * Center for Scalable and Integrated NAnoManufacturing (SINAM) -NSF

    E-Print Network [OSTI]

    Militzer, Burkhard

    *SINAM NANO SEMINAR * Center for Scalable and Integrated NAnoManufacturing (SINAM) - NSF Nanoscale and Integrated NAnoManufacturing (SINAM) Email:xz_asst@me.berkeley.edu Phone: 510.642.0390 Fax: 510.643.2311 #12;

  13. Nano-optomechanical transducer

    DOE Patents [OSTI]

    Rakich, Peter T; El-Kady, Ihab F; Olsson, Roy H; Su, Mehmet Fatih; Reinke, Charles; Camacho, Ryan; Wang, Zheng; Davids, Paul

    2013-12-03T23:59:59.000Z

    A nano-optomechanical transducer provides ultrabroadband coherent optomechanical transduction based on Mach-wave emission that uses enhanced photon-phonon coupling efficiencies by low impedance effective phononic medium, both electrostriction and radiation pressure to boost and tailor optomechanical forces, and highly dispersive electromagnetic modes that amplify both electrostriction and radiation pressure. The optomechanical transducer provides a large operating bandwidth and high efficiency while simultaneously having a small size and minimal power consumption, enabling a host of transformative phonon and signal processing capabilities. These capabilities include optomechanical transduction via pulsed phonon emission and up-conversion, broadband stimulated phonon emission and amplification, picosecond pulsed phonon lasers, broadband phononic modulators, and ultrahigh bandwidth true time delay and signal processing technologies.

  14. Microsystems Micro and Nano Technologies

    E-Print Network [OSTI]

    Ingrand, François

    , virtual prototyping · Microsystems reliability · Micro and nano systems for detection and actuation, nanophotonics, MOEMS and micro-optics · Power-electronics components, electrical and photovoltaic energy

  15. NANO EXPRESS Open Access Ultrafast nano-oscillators based on interlayer-

    E-Print Network [OSTI]

    Li, Teng

    NANO EXPRESS Open Access Ultrafast nano-oscillators based on interlayer- bridged carbon nanoscrolls nano-oscillators based on carbon nanoscrolls (CNSs) using molecular dynamics simulations. Initiated of gigahertz. We demonstrate an effective strategy to reduce the dissipation of the CNS-based nano

  16. Nano-Tera.CH: Nano-technologies for Tera-scale Problems Giovanni De Micheli

    E-Print Network [OSTI]

    De Micheli, Giovanni

    Nano-Tera.CH: Nano-technologies for Tera-scale Problems Giovanni De Micheli EPF Lausanne 1015, Switzerland ABSTRACT -- The Nano-Tera.CH initiative is a broad engineering program in Switzerland for health is rooted in advances in engineering nano-scale materials and their exploitation in a variety of systems

  17. 3-D Nano-Fiber Manufacturing by Controlled Pulling of Liquid Polymers using Nano-Probes

    E-Print Network [OSTI]

    Sitti, Metin

    3-D Nano-Fiber Manufacturing by Controlled Pulling of Liquid Polymers using Nano-Probes Amrinder S) nano-scale manufacturing tools in this paper. Commercially available Atomic Force Microscope (AFM) systems are mainly limited to 1-D or 2-D manipulation tasks, and advanced 3-D nano

  18. Nano Letters 8, 4477-4482 (2008) NANO-CRYSTALLOGRAPHY OF INDIVIDUAL CARBON NANOTUBES

    E-Print Network [OSTI]

    Homes, Christopher C.

    Nano Letters 8, 4477- 4482 (2008) 1 NANO-CRYSTALLOGRAPHY OF INDIVIDUAL CARBON NANOTUBES N. Bozovi 1 meV energy resolution and 1 nm spatial resolution.1 The later should enable nano-crystallography ­ XRD study of individual nano-particles. The commissioning of NSLS II will take some time -- the plan

  19. Whither `nano' or `bio'? | Rob Ritchie So what's all this hype about `nano' and `bio'?

    E-Print Network [OSTI]

    Ritchie, Robert

    OPINION Whither `nano' or `bio'? | Rob Ritchie So what's all this hype about `nano' and `bio of these words. Indeed, I've heard numerous people glibly state that, unless the title of your proposal has `nano! The nano revolution has certainly taken our field by storm. One constantly hears of the new paradigm ­ we

  20. Nano Communication Networks Update | GE Global Research

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

    Nano Communication Networks Update Nano Communication Networks Update Steve Bush 2011.12.09 Hi everybody, In my last blog I talked about some of the work I have been doing...

  1. Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure...

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

    Preserving Diesel Exhaust Ultrafine (Nano-) Particulate Structure in Genotoxicity Studies to Support Engineering Development of Emission Controls Preserving Diesel Exhaust...

  2. EE 337 Engineering nano-systems EE 337 Engineering micro and nano-systems

    E-Print Network [OSTI]

    Levi, Anthony F. J.

    EE 337 Engineering nano-systems Page 1 EE 337 Engineering micro and nano-systems A.F.J. Levi Spring.edu/dept/engineering/eleceng/Adv_Network_Tech/Html/ee337.html This course is designed as an introduction to nano-technology, methods to control and exploit the new degrees of freedom delivered by nano-science, and the integration of nano-technology into systems

  3. From nano-hype to nano-nonsense, this issue in the

    E-Print Network [OSTI]

    Rambaut, Andrew

    BigPicture on From nano-hype to nano- nonsense, this issue in the Big Picture series sifts sense­13 What does the future hold for four nano-products? 14­15 The big picture 16 FIND OUT MORE ISSUE 2 JUNE and revolutionise medicine. They are the future, say the nano-enthusiasts. Hang on, say nano-sceptics, didn't you

  4. EE 337 Engineering micro and nano-systems EE 337 Engineering micro and nano-systems

    E-Print Network [OSTI]

    Levi, Anthony F. J.

    EE 337 Engineering micro and nano-systems Page 1 EE 337 Engineering micro and nano-systems A.edu/dept/engineering/eleceng/Adv_Network_Tech/Html/ee337.html This course is designed as an introduction to micro and nano-technology, methods to control and exploit the new degrees of freedom delivered by nano-science, and the integration of micro and nano

  5. Back The Pico Mountain

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth (AOD)ProductssondeadjustsondeadjustAboutScience Program CumulusAMarch-6,-2015BSCmemo.pdfDECEMBERE P T E M B

  6. The Nano-Micro Interface Bridging the Micro

    E-Print Network [OSTI]

    Cao, Guozhong

    The Nano-Micro Interface Bridging the Micro and Nano Worlds. Edited by Hans-Jörg Fecht and Matthias- tion among researchers. The book The Nano-Micro Interface: Bridging the Micro and Nano Worlds fills one of these gaps. More specifically, this book, as its subtitle indicates, bridges the micro and nano worlds

  7. RI&E Nano particles*) Carried out by

    E-Print Network [OSTI]

    Twente, Universiteit

    1 RI&E Nano particles*) Carried out by: Faculty: CTW/EWI/TNW Department: 1. Information Nano characteristics of nano material (or parent material) **) Carcinogenic Mutagenic Reprotoxic Density (kg/dm3 ) kg/dm3 State of aggregation of the nano material Liquid Solid 2. Health hazard nano material Danger

  8. THERMAL HEAT TRANSPORT AT THE NANO-SCALE LEVEL AND ITS APPLICATION TO NANO-MACHINING.

    E-Print Network [OSTI]

    Wong, Basil T.

    2006-01-01T23:59:59.000Z

    ??Nano-manufacturing is receiving significant attention in industry due to the ever-growing interest in nanotechnology in research institutions. It is hypothesized that single-step or direct-write nano-scale (more)

  9. Luminescent organosilicon polymers and sol-gel synthesis of nano-structured silica

    E-Print Network [OSTI]

    Martinez, H. Paul

    2011-01-01T23:59:59.000Z

    filled hollow silica nano-? and microshells nano-? extracting sensor. Conclusions The adsorptive properties of hollow

  10. NanoSciences Fondation Post-doc Position 2010

    E-Print Network [OSTI]

    Canet, Léonie

    NanoSciences Fondation Post-doc Position ­ 2010 Postdoctoral position on SQUID microscopy The SuperNanoCharac project of the NanoSciences Fondation (Grenoble, France) seeks outstanding candidates for a postdoctoral

  11. Nano fabrication approaches for patterned magnetic recording media

    E-Print Network [OSTI]

    Choi, Chulmin

    2010-01-01T23:59:59.000Z

    domains into V-shaped grooves. Nano Letters, 2006. 6(10): p.of a diblock copolymer. Nano Letters, 2008. 8(9): p. Chuang,an ABC Triblock Terpolymer. Nano Letters, 2009. 9(12): p.

  12. Nano-tribology of discrete track recording media

    E-Print Network [OSTI]

    Yoon, Yeoungchin

    2010-01-01T23:59:59.000Z

    O. L. Warren and F. E. Talke, Nano-hardness testing withBhushan, Handbook of Micro/Nano Tribology 2 nd edition, CRCLu, B. Guelorget, H. Chen, Nano-scratch and fretting wear

  13. Nano Lect 1 Questions and Keypoints Key Points

    E-Print Network [OSTI]

    Smy, Tom

    Nano Lect 1 ­ Questions and Keypoints Key Points 1. What is nano technology: a. Very small technology with device in the 1nm to 100nm lots of useful properties Questions 1. Define nanotechnology. Is an nano

  14. New nano structure approaches for bulk thermoelectric materials

    E-Print Network [OSTI]

    Kim, Jeonghoon

    2010-01-01T23:59:59.000Z

    Figure 29. Schematic of Nano-composite particle fabricationX-ray analysis) of nano-composite particles.. 45Handbook:Macro to Nano" (Ed: D. M. Rowe), Taylor and

  15. Nano for Business 2014: Partnering for Regional Success Our Fifth Nano for Business Conference!

    E-Print Network [OSTI]

    Gilchrist, James F.

    Nano for Business 2014: Partnering for Regional Success Our Fifth Nano for Business Conference! Thursday, May 22, 2014 from 8:30-4:30 Lehigh University, Rauch Business Center Agenda: http://www.lehigh.edu/lnn/docs/Nano_for_Business CAMN members, Drexel faculty Meet business and university contacts and learn about: · Nanotechnology

  16. Nano-Optoelectronic Integration on Silicon

    E-Print Network [OSTI]

    Chen, Roger

    2012-01-01T23:59:59.000Z

    implementing practical optoelectronics beyond the researchthat the future of nano-optoelectronics is more than just anthe possibility of using optoelectronics for retinal

  17. CO2 Conversion By Nano Heaters

    ScienceCinema (OSTI)

    None

    2014-06-23T23:59:59.000Z

    A graduate student named Oshadha Ranasingha created this animation on the research he performed on nano heaters while working at NETL.

  18. CO2 Conversion By Nano Heaters

    SciTech Connect (OSTI)

    None

    2014-03-11T23:59:59.000Z

    A graduate student named Oshadha Ranasingha created this animation on the research he performed on nano heaters while working at NETL.

  19. Development of Steel Fastener Nano-Ceramic Coatings for Corrosion...

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

    Steel Fastener Nano-Ceramic Coatings for Corrosion Protection of Magnesium Parts (AMD-704) Development of Steel Fastener Nano-Ceramic Coatings for Corrosion Protection of Magnesium...

  20. Innovative Nano-structuring Routes for Novel ThermoelectricMaterials...

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

    Nano-structuring Routes for Novel Thermoelectric Materials;Phonon Blocking & DOS Engineering Innovative Nano-structuring Routes for Novel Thermoelectric Materials;Phonon Blocking &...

  1. Nano-High: Lawrence Berkeley National Laboratory Lecture on the...

    Broader source: Energy.gov (indexed) [DOE]

    Nano-High: Lawrence Berkeley National Laboratory Lecture on the "compassionate instinct" Nano-High: Lawrence Berkeley National Laboratory Lecture on the "compassionate instinct"...

  2. Micro- & Nano-Technologies Enabling More Compact, Lightweight...

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

    Micro- & Nano-Technologies Enabling More Compact, Lightweight Thermoelectric Power Generation & Cooling Systems Micro- & Nano-Technologies Enabling More Compact, Lightweight...

  3. Radiation Stability of Nanoclusters in Nano-structured Oxide...

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

    Stability of Nanoclusters in Nano-structured Oxide Dispersion Strengthened (ODS) Steels. Radiation Stability of Nanoclusters in Nano-structured Oxide Dispersion Strengthened (ODS)...

  4. Advanced Materials and Nano Technology for Solar Cells

    E-Print Network [OSTI]

    Han, Tao

    2014-01-01T23:59:59.000Z

    MATERIALS AND NANO TECHNOLOGY FOR SOLAR CELLS A thesisADVANCED MATERIALS AND NANO TECHNOLOGY FOR SOLAR CELLS Insilicon layers. The technology to add the intrinsic layer

  5. Dipole nano-laser: Theory and properties

    SciTech Connect (OSTI)

    Ghannam, T., E-mail: gtalal@hotmail.com [King Abdullah Institute for Nano-Technology, King Saud University, PO Box 2454, Riyadh 11451 (Saudi Arabia)

    2014-03-31T23:59:59.000Z

    In this paper we outline the main quantum properties of the system of nano-based laser called Dipole Nano-Laser emphasizing mainly on its ability to produce coherent light and for different configurations such as different embedding materials and subjecting it to an external classical electric field.

  6. NanoSight LM10 HS Operating Manual

    E-Print Network [OSTI]

    Fygenson, Deborah Kuchnir

    1 NanoSight LM10 HS Operating Manual © 2009 NanoSight Ltd. NanoSight Ltd., Minton Park, Amesbury ........................................................... 8 #12;3 1. Important Notes The LM10HS option for NanoSight LM10 systems is designed to supply

  7. Parallel nano-Differential Scanning Calorimetry: A New Device for Combinatorial Analysis of Complex nano-Scale Material Systems

    E-Print Network [OSTI]

    1 Parallel nano-Differential Scanning Calorimetry: A New Device for Combinatorial Analysis of Complex nano-Scale Material Systems Patrick James McCluskey, and Joost J. Vlassak Division of Engineering is presented for the combinatorial analysis of complex nano-scale material systems. The parallel nano

  8. Nano-crystal growth in cordierite glass ceramics studied with X-ray scattering

    E-Print Network [OSTI]

    Bras, Wim

    2010-01-01T23:59:59.000Z

    Nano-crystal growth in cordierite glass ceramics studiedmatrix in which crystalline nano-crystals are embedded. Bysample the Cr containing spinel nano crystals. In these SEM

  9. Synthetic Nano-Low Density Lipoprotein as Targeted Drug Delivery Vehicle for Glioblastoma Multiforme

    E-Print Network [OSTI]

    Nikanjam, Mina; Blakely, Eleanor A.; Bjornstad, Kathleen A.; Shu, Xiao; Budinger, Thomas F.; Forte, Trudy M.

    2006-01-01T23:59:59.000Z

    Synthetic Nano-Low Density Lipoprotein as Targeted Drugmicroemulsion; peptide; nano-low density lipoproteintherapeutic agents. A synthetic nano-LDL (nLDL) particle was

  10. Hybrid Nano Carbon Fiber/Graphene Platelet-Based High-Capacity...

    Broader source: Energy.gov (indexed) [DOE]

    anode materials- Si nano coatingparticles supported by a 3-D network (mat) of nano graphene platelets (NGP)carbon nano-fibers (CNF). Phase 2: Technology Development (This...

  11. The texture and rotation movements of Ag nano particles and nano films.

    E-Print Network [OSTI]

    Chieh, Lin-Jen

    2007-01-01T23:59:59.000Z

    ??Thermal evaporator was used to coat a layer of silver nano-particles and thin film on (100) plane of rock salt . The experiment content can (more)

  12. Pool boiling on nano-finned surfaces

    E-Print Network [OSTI]

    Sriraman, Sharan Ram

    2009-05-15T23:59:59.000Z

    The effect of nano-structured surfaces on pool boiling heat transfer is explored in this study. Experiments are conducted in a cubical test chamber containing fluoroinert coolant (PF5060, Manufacturer: 3M Co.) as the working fluid. Pool boiling...

  13. NANO - "Green" metal oxides ... | ornl.gov

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

    "Green" metal oxides ... Water and nano-sized particles isolated from trees, plants and algae are the ingredients of a new recipe for low-cost metal oxides that are widely used in...

  14. A nano-stepping robotic instrumentation platform

    E-Print Network [OSTI]

    Wahab, Adam Joseph

    2013-01-01T23:59:59.000Z

    The development of an Autonomous Nano-stepping Tool (ANT) system is presented. Each ANT is a small, tripodal, robotic instrument capable of untethered precision motion within a quasi-three-dimensional workspace of arbitrary ...

  15. Lipid bilayers on nano-templates

    DOE Patents [OSTI]

    Noy, Aleksandr (Belmont, CA); Artyukhin, Alexander B. (Menlo Park, CA); Bakajin, Olgica (San Leandro, CA); Stoeve, Pieter (Davis, CA)

    2009-08-04T23:59:59.000Z

    A lipid bilayer on a nano-template comprising a nanotube or nanowire and a lipid bilayer around the nanotube or nanowire. One embodiment provides a method of fabricating a lipid bilayer on a nano-template comprising the steps of providing a nanotube or nanowire and forming a lipid bilayer around the polymer cushion. One embodiment provides a protein pore in the lipid bilayer. In one embodiment the protein pore is sensitive to specific agents

  16. Working with Code UIC Linux Users Group

    E-Print Network [OSTI]

    Ben-Arie, Jezekiel

    what you use nano/pico vim eclipse compiling g++ javac makefiles debugging introduction tools tips resources what you use nano/pico vim eclipse beginner logic concept: programing is hard and scary. we should use nano/pico vim eclipse nano familiar interface included in almost every linux distribution UIC

  17. Water adsorption on aggregates of spherical aerosol nano particles

    E-Print Network [OSTI]

    Nie, Chu

    2005-11-01T23:59:59.000Z

    graphite planer substrate; the result corresponds well with previous simulation work. Adsorption of both noble gas and water onto a single spherical nano particle and aggregates of spherical nano particles has been computed with the developed equation...

  18. A New Route to Nano Self-Assembly

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

    A New Route to Nano Self-Assembly A New Route to Nano Self-Assembly Print Wednesday, 24 February 2010 00:00 If the promise of nanotechnology is to be fulfilled, nanoparticles will...

  19. Nano-High: Lawrence Berkeley National Laboratory Lecture on Materials...

    Broader source: Energy.gov (indexed) [DOE]

    on Materials Nano-High: Lawrence Berkeley National Laboratory Lecture on Materials February 23, 2013 3:00PM EST UC Berkeley campus Nano-High, a program of the Lawrence Berkeley...

  20. Nano-High: Lawrence Berkeley National Laboratory Lecture on Good...

    Broader source: Energy.gov (indexed) [DOE]

    on Good Sugars Nano-High: Lawrence Berkeley National Laboratory Lecture on Good Sugars February 2, 2013 3:00PM EST UC Berkeley Campus Nano-High, a program of the Lawrence Berkeley...

  1. Micro- and nano- scale experimental approach to surface engineer metals

    E-Print Network [OSTI]

    Asthana, Pranay

    2007-09-17T23:59:59.000Z

    metals for enhanced surface properties. A micro- and nano- scale experimental approach has been used to achieve these objectives. Novel principles of nano technology are incorporated into the experiments. Friction has the potential to generate sufficient...

  2. Carbon nano-relays for low power switching

    E-Print Network [OSTI]

    Milaninia, Kaveh Mehdi

    2009-01-01T23:59:59.000Z

    In this thesis two unique carbon based nanoelectromechanical switches or carbon nano-relays are demonstrated as a toolkit for investigating NEMs based low power switching. The first is a vertical carbon nano-relay, consisting ...

  3. Integrating Security Solutions to Support nanoCMOS Electronics Research .

    E-Print Network [OSTI]

    SINNOTT, RICHARD

    2008-01-01T23:59:59.000Z

    ??The UK Engineering and Physical Sciences Research Council (EPSRC) funded Meeting the Design Challenges of nanoCMOS Electronics (nanoCMOS) is developing a research infrastructure for collaborative (more)

  4. 3D nano-structures for laser nano-manipulation Gediminas Seniutinas1,2, Lorenzo Rosa*1,2, Gediminas Gervinskas1,2,

    E-Print Network [OSTI]

    Boyer, Edmond

    534 3D nano-structures for laser nano-manipulation Gediminas Seniutinas1,2, Lorenzo Rosa*1-Institut. License and terms: see end of document. Abstract The resputtering of gold films from nano-holes defined of the nano-holes. The extraordinary transmission through the patterns of such nano-wells was investigated

  5. Dynamics of heat transfer between nano systems

    E-Print Network [OSTI]

    Svend-Age Biehs; Girish S. Agarwal

    2012-10-18T23:59:59.000Z

    We develop a dynamical theory of heat transfer between two nano systems. In particular, we consider the resonant heat transfer between two nanoparticles due to the coupling of localized surface modes having a finite spectral width. We model the coupled nanosystem by two coupled quantum mechanical oscillators, each interacting with its own heat bath, and obtain a master equation for the dynamics of heat transfer. The damping rates in the master equation are related to the lifetimes of localized plasmons in the nanoparticles. We study the dynamics towards the steady state and establish connection with the standard theory of heat transfer in steady state. For strongly coupled nano particles we predict Rabi oscillations in the mean occupation number of surface plasmons in each nano particle.

  6. New nano structure approaches for bulk thermoelectric materials

    E-Print Network [OSTI]

    Kim, Jeonghoon

    2010-01-01T23:59:59.000Z

    erosion process for hollow nano-walled particles should beNano-grain structure in the Spark Eroded Bi-Sb-Te alloy particles .. 46 3.2.3 HollowHollow BiSbTe spheres Pulverized nanowall BST Nanocomposite TE alloy (Thin walled TE flakes + phonon scattering nano

  7. Micro et Nano Physique Cours 1 : les principes de la

    E-Print Network [OSTI]

    Rioul, Olivier

    Micro et Nano Physique (MNP) Cours 1 : les principes de la mécanique quantique (approche conceptuelle) #12;Micro et nano physique (MNP)page 1 Pourquoi un cours sur la physique microscopique ? · Une fondamentaux à la base des technologies du numérique #12;Micro et nano physique (MNP)page 2 Organisation de l

  8. Nano-structured self-cleaning superhydrophobic glass

    E-Print Network [OSTI]

    Kim, Jin Yeol

    2010-01-01T23:59:59.000Z

    L. -H. Chen, and S. Jin, NANO, 5(2), 1-7 (2010) 6. 50 nm DNAS. Jin, and J. N. Cha, ACS NANO, 3(8), 7. Effect of Plantcarbon nanotube forests. Nano lett. , 2003. 3(12): p. 1701-

  9. Nano Research Kinetics of Molecular Recognition Mediated Nanoparticle

    E-Print Network [OSTI]

    Nano Research Kinetics of Molecular Recognition Mediated Nanoparticle Self-Assembly Chinmay Soman1 the streptavidin-biotin interaction [9] 0078 Nano Res (2009) 2: 78 84 DOI 10.1007/s12274-009-9005-z Research Article #12;79Nano Res (2009) 2: 78 84 are incubated with specific antigens in a physiological buffer

  10. Nano-Manufacturing While nanotechnology promises to revolutionize everything from

    E-Print Network [OSTI]

    Hill, Wendell T.

    Nano-Manufacturing While nanotechnology promises to revolutionize everything from energy production futuristic systems will remain science fiction without practical and scalable nano-manufacturing capabilities. Researchers at the University of Maryland's NanoCenter have the manufacturing capabilities needed for turning

  11. Defects and Faults in Quantum Cellular Automata at Nano Scale

    E-Print Network [OSTI]

    Defects and Faults in Quantum Cellular Automata at Nano Scale Mehdi Baradaran Tahoori, Mariam considerable research on quantum dot cellular automata (QCA) as a new computing scheme in the nano, quantum dot cellular automata (QCA) not only gives a solution at nano scale, but also it offers a new

  12. Nano-scale Sensor Networks for Chemical Eisa Zarepour1

    E-Print Network [OSTI]

    New South Wales, University of

    Nano-scale Sensor Networks for Chemical Catalysis Eisa Zarepour1 Mahbub Hassan1 Chun Tung Chou1- searchers are now investigating the viability of nano-scale sensor networks (NSNs), which are formed natural gas to liquid fuel. Given that reliable wireless communi- cation at nano-scale is at very early

  13. Nano-Spintronics 2010 Spin-Orbit Effects

    E-Print Network [OSTI]

    Duisburg-Essen, Universität

    Nano-Spintronics 2010 Spin-Orbit Effects in Semiconductors with Reduced Dimensions Thomas Schäpers Institut für Bio- und Nanosysteme (IBN-1) MitgliedderHelmholtz-Gemeinschaft #12;Nano-Spintronic Bad Honnef by a gate (Rashba effect) #12;Nano-Spintronic Bad Honnef, 2010 Institut für Bio- und Nanosysteme (IBN-1

  14. Understanding nano-materials from first principles Leeor Kronik

    E-Print Network [OSTI]

    Adler, Joan

    Understanding nano-materials from first principles Leeor Kronik Department of Materials and Interfaces, Weizmann Institute of science, Rehovoth 76100 Nano-sized materials often exhibit exciting new traditional solid-state physics models are applicable to the intermediate nano- size range. As a result, first

  15. NANO-INDENTATION OF COPPER THIN FILMS ON SILICON SUBSTRATES

    E-Print Network [OSTI]

    Suresh, Subra

    NANO-INDENTATION OF COPPER THIN FILMS ON SILICON SUBSTRATES S. Suresh1 , T.-G. Nieh2 and B.W. Choi2: Mechanical properties; Nano-indentation; Thin films; Copper; Dislocations Introduction Indentation methods films on substrates (e.g., [2,3]) using instrumented indentation. Nano-indentation studies of thin films

  16. Center for Nano and Micro Manufacturing Chemical Hygiene Plan

    E-Print Network [OSTI]

    Woodall, Jerry M.

    Center for Nano and Micro Manufacturing Chemical Hygiene Plan Vers. 12/13 Page 1 Chemical Hygiene and safety information for all members of the Center for Nano-MicroManufacturing (CNM2) laboratory chase) 1268 (Service chase) 1274 Lab work room 1276 (Service chase) #12;Center for Nano and Micro

  17. Peristaltic pumps work in nano scales

    E-Print Network [OSTI]

    Farnoush Farahpour; Mohammad Reza Ejtehadi

    2013-08-05T23:59:59.000Z

    A design for a pump is suggested which is based on well-known peristaltic pumps. In order to simply describe the operation of the proposed pump, an innovative interpretation of low Reynolds number swimmers is presented and thereafter a similar theoretical model would be suggested to quantify the behavior of the pumps. A coarse-grained molecular dynamic simulation is used to examine the theoretical predictions and measure the efficiency of the pump in nano scales. It is shown that this pump with a modest design is capable of being a good option for transport processes in nano scale.

  18. Plasma Nanoscience: from Nano-Solids in Plasmas to Nano-Plasmas in Solids

    E-Print Network [OSTI]

    Ostrikov, K; Meyyappan, M

    2013-01-01T23:59:59.000Z

    The unique plasma-specific features and physical phenomena in the organization of nanoscale solid-state systems in a broad range of elemental composition, structure, and dimensionality are critically reviewed. These effects lead to the possibility to localize and control energy and matter at nanoscales and to produce self-organized nano-solids with highly unusual and superior properties. A unifying conceptual framework based on the control of production, transport, and self-organization of precursor species is introduced and a variety of plasma-specific non-equilibrium and kinetics-driven phenomena across the many temporal and spatial scales is explained. When the plasma is localized to micrometer and nanometer dimensions, new emergent phenomena arise. The examples range from semiconducting quantum dots and nanowires, chirality control of single-walled carbon nanotubes, ultra-fine manipulation of graphenes, nano-diamond, and organic matter, to nano-plasma effects and nano-plasmas of different states of matter...

  19. Nanotubes, Nanowires and Nano-electronics

    E-Print Network [OSTI]

    Pulfrey, David L.

    5 FOCUS Nanotubes, Nanowires and Nano-electronics Carbon nanotubes are single molecules of carbonNa colleagues are working on both single-walled and multiple- walled nanotubes (layers of cylinders inside each industrial uses. One potential application for single-walled nanotubes is electron emitters for flat

  20. PicoSPM(tm) | EMSL

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

    (3-dimercapto-1-propanol, BAL)significantly reduced extracellular polymeric substances (EPS) expression by Brevundimonas diminuta in suspended cultures at levels just below the...

  1. Nano watermill driven by the revolving charge

    E-Print Network [OSTI]

    Zhou, Xiaoyan; Nie, Xuechuan; Wu, Fengmin; Liu, Yang; Lu, Hangjun

    2015-01-01T23:59:59.000Z

    Using molecular dynamics simulations, we propose a novel nanoscale watermill for unidirectional transport of water molecules through a curved single-walled carbon nanotube (SWNT). In this nanoscale system, a revolving charge is introduced to drive water chain confined inside the SWNT, which is served as nano waterwheel and nano engine. A resonance-like phenomenon is found that the revolving frequency of the charge plays a key role in pumping water chain. The water flux across the SWNT increases with respect to the revolving frequency of the external charge and reaches the maximum when the frequency is 4 THz. Correspondingly, the number of the hydrogen bonds of water chain inside the SWNT decreases dramatically with the frequency ranging from 4 THz to 25 THz. The mechanism behind the resonant phenomenon has been investigated systematically. Our findings are helpful for designing nanoscale fluidic devices and energy converters.

  2. Electrochemical method of producing nano-scaled graphene platelets

    DOE Patents [OSTI]

    Zhamu, Aruna; Jang, Joan; Jang, Bor Z.

    2013-09-03T23:59:59.000Z

    A method of producing nano-scaled graphene platelets with an average thickness smaller than 30 nm from a layered graphite material. The method comprises (a) forming a carboxylic acid-intercalated graphite compound by an electrochemical reaction; (b) exposing the intercalated graphite compound to a thermal shock to produce exfoliated graphite; and (c) subjecting the exfoliated graphite to a mechanical shearing treatment to produce the nano-scaled graphene platelets. Preferred carboxylic acids are formic acid and acetic acid. The exfoliation step in the instant invention does not involve the evolution of undesirable species, such as NO.sub.x and SO.sub.x, which are common by-products of exfoliating conventional sulfuric or nitric acid-intercalated graphite compounds. The nano-scaled platelets are candidate reinforcement fillers for polymer nanocomposites. Nano-scaled graphene platelets are much lower-cost alternatives to carbon nano-tubes or carbon nano-fibers.

  3. Asphaltenes-based polymer nano-composites

    DOE Patents [OSTI]

    Bowen, III, Daniel E

    2013-12-17T23:59:59.000Z

    Inventive composite materials are provided. The composite is preferably a nano-composite, and comprises an asphaltene, or a mixture of asphaltenes, blended with a polymer. The polymer can be any polymer in need of altered properties, including those selected from the group consisting of epoxies, acrylics, urethanes, silicones, cyanoacrylates, vulcanized rubber, phenol-formaldehyde, melamine-formaldehyde, urea-formaldehyde, imides, esters, cyanate esters, allyl resins.

  4. NanoEner Technologies | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 -Energieprojekte3Informationof Energy Calculator29 JumpNamaNanjingNanoEner

  5. NanoPV Corporation | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 -Energieprojekte3Informationof Energy Calculator29NanoPV Corporation Jump to:

  6. NanoeXa | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 -Energieprojekte3Informationof Energy Calculator29NanoPV Corporation Jump

  7. Nano-scale strengthening from grains, subgrains, and particles in Fe-based alloys

    E-Print Network [OSTI]

    Lesuer, D. R.; Syn, C. K.; Sherby, O. D.

    2010-01-01T23:59:59.000Z

    x ULTRAFINE GRAINED MATERIALS Nano-scale strengthening fromSpringerlink.com Abstract Nano-scale strengthening has beenless than 20 h), develop nano-scale subgrains [15]. These

  8. Biomimicry using Nano-Engineered Enhanced Condensing Surfaces for Sustainable Fresh Water Technology

    E-Print Network [OSTI]

    Al-Beaini, Sara

    2012-01-01T23:59:59.000Z

    Nanotube Forests. In: Nano Letters 3 (2003), p. 1701. [37]Namib Desert Beetle. In: Nano Letters 6.6 (2006), pp. 1213Surface Energy. In: ACS Nano 3.7 (2009), pp. 17031710. [

  9. Micro/Nano-Scale Phase Change Systems for Thermal Management and Solar Energy Conversion Applications

    E-Print Network [OSTI]

    Coso, Dusan

    2013-01-01T23:59:59.000Z

    Enhancement in Pool Boiling of Nano-fluids, InternationalLiquid Spreading Due to Nano/Microstructures on the CriticalWicking Action of Micro/Nano Structures on Pool Boiling

  10. Annealing Simulations of Nano-Sized Amorphous Structures in SiC...

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

    Simulations of Nano-Sized Amorphous Structures in SiC. Annealing Simulations of Nano-Sized Amorphous Structures in SiC. Abstract: A two-dimensional model of a nano-sized amorphous...

  11. Albanova Nano Fabrication Facility: Activity Report D. B. Haviland Activity Report

    E-Print Network [OSTI]

    Haviland, David

    Albanova Nano Fabrication Facility: Activity Report D. B. Haviland Activity Report Albanova contains a report of the activity carried out in the Albanova Nano- Fabrication Facility, located...................................................................................................... 5 Appendix 1: Nano-Lab projects

  12. Carbon Based Nano-Materials Research, Development and Applications in Optoelectronics

    E-Print Network [OSTI]

    Wang, Feihu

    2012-01-01T23:59:59.000Z

    Semiconducting Carbon Nanotubes. Nano Lett. 4, 35-39 (2004).on Clean Substrates. Nano Lett. 9, 3137-3141 Dalton, A. B.Single-Wall Carbon Nanotube. Nano Lett. 5, Wu, Z. et al.

  13. Nano-scale magnetic film formation by decompression of supercritical CO?/ferric acetylacetonate solutions

    E-Print Network [OSTI]

    De Dea, Silvia

    2008-01-01T23:59:59.000Z

    GROWTH OF NANO-SCALE MAGNETIC FILMS USING CO 2 RESS EX-113 GROWTH OF NANO-SCALE MAGNETIC FILMS USING A SUPERCRIT-of EDX analysis on nano-scale ?lms. . . . . . . . . . . 109

  14. E-Print Network 3.0 - al-zral3 nano structured Sample Search...

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

    nano structured Search Powered by Explorit Topic List Advanced Search Sample search results for: al-zral3 nano structured Page: << < 1 2 3 4 5 > >> 1 NanoFab Yellow Form...

  15. Numerical Study of Coulomb Scattering Effects on Electron Beam from a Nano-Tip

    E-Print Network [OSTI]

    2008-01-01T23:59:59.000Z

    electron beam emitted from a nano- tip. We found that theon Electron Beam from a Nano-Tip ? J. Qiang , J. Corlett,Switzerland Abstract Nano-tips with high acceleration

  16. Investigation of growth, coverage and effectiveness of plasma assisted nano-films of fluorocarbon

    E-Print Network [OSTI]

    Mukhopadhyay, Sharmila M.

    Investigation of growth, coverage and effectiveness of plasma assisted nano-films of fluorocarbon and uneven shaped nano-materials. In this paper, results on plasma-assisted nano-scale fluorocarbon films

  17. Tecumseh Fitch p.1 Nano-Intentionality Fitch, W. T. (2008). "Nano-intentionality: A defense of intrinsic intentionality," Biology and Philosophy 23: 157-177

    E-Print Network [OSTI]

    Fitch, Tecumseh

    Tecumseh Fitch p.1 Nano-Intentionality Fitch, W. T. (2008). "Nano-intentionality: A defense of the published manuscript; the published version had the heading numbers removed and had several typos.) Nano "nano-intentionality": a microscopic form of "aboutness". The form of intrinsic intentionality I propose

  18. On nano size structures for enhanced bone formation.

    E-Print Network [OSTI]

    Meirelles, Luiz

    2007-01-01T23:59:59.000Z

    ??Purpose The general aim of the present thesis was to investigate early bone response to titanium implants modified with nano size structures. Therefore, 1. a (more)

  19. Nonlinear coupling of nano mechanical resonators to Josephson quantum circuits

    E-Print Network [OSTI]

    Xingxiang Zhou; Ari Mizel

    2006-05-01T23:59:59.000Z

    We propose a technique to couple the position operator of a nano mechanical resonator to a SQUID device by modulating its magnetic flux bias. By tuning the magnetic field properly, either linear or quadratic couplings can be realized, with a discretely adjustable coupling strength. This provides a way to realize coherent nonlinear effects in a nano mechanical resonator by coupling it to a Josephson quantum circuit. As an example, we show how squeezing of the nano mechanical resonator state can be realized with this technique. We also propose a simple method to measure the uncertainty in the position of the nano mechanical resonator without quantum state tomography.

  20. Uncertainty Quantification for Nano-Scale Integrated Circuits...

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

    Uncertainty Quantification for Nano-Scale Integrated Circuits and MEMS Design Event Sponsor: Mathematics and Computing Science Seminar Start Date: Jan 20 2015 - 10:30am Building...

  1. Self-Assembly of Polymer Nano-Elements on Sapphire

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

    Self-Assembly of Polymer Nano-Elements on Sapphire Print Self-assembly of polymers promises to vastly improve the properties and manufacturing processes of nanostructured...

  2. Nano-scale Composite Hetero-structures: Novel High Capacity Reversible...

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

    Nano-scale Composite Hetero-structures: Novel High Capacity Reversible Anodes for Lithium-ion Batteries Nano-scale Composite Hetero-structures: Novel High Capacity Reversible...

  3. E-Print Network 3.0 - amino-functionalized magnetic nano-adsorbent...

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

    functionalized magnetic nano-adsorbent Search Powered by Explorit Topic List Advanced Search Sample search results for: amino-functionalized magnetic nano-adsorbent Page: << < 1 2...

  4. Effect Of Chromium Underlayer On The Properties Of Nano-Crystalline...

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

    Of Chromium Underlayer On The Properties Of Nano-Crystalline Diamond Films. Effect Of Chromium Underlayer On The Properties Of Nano-Crystalline Diamond Films. Abstract: This paper...

  5. Structural Testing at the Micro and Nano Scales: Breaking

    E-Print Network [OSTI]

    Ballarini, Roberto

    Structural Testing at the Micro and Nano Scales: Breaking Invisible Specimens With Zero Force). "Nano measurements with micro devices: mechanical properties of hydrated collagen fibrils," J. of the R tangential slots · Fuel swirls in the spin chamber and exits through the orifice in a hollow conical spray

  6. C3Nano, inc | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: EnergyBoston Areais aBurkittsville,Bushyhead,ButtsC &Energy2 -Nano, inc

  7. NanoReady Ltd | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's HeatMexico: EnergyMithun JumpMuscoy,Jump9 Case Data Survey TypeTuneNanoReady

  8. Nano-superconducting quantum interference devices with suspended junctions

    SciTech Connect (OSTI)

    Hazra, D.; Hasselbach, K. [Institut Nel, CNRS and Universit Joseph Fourier, 25 Avenue des Martyrs, Grenoble (France); Kirtley, J. R. [Center for Probing the Nanoscale, Stanford University, Palo Alto, California 94305-4045 (United States)

    2014-04-14T23:59:59.000Z

    Nano-Superconducting Quantum Interference Devices (nano-SQUIDs) are usually fabricated from a single layer of either Nb or Al. We describe here a simple method for fabricating suspended nano-bridges in Nb/Al thin-film bilayers. We use these suspended bridges, which act as Josephson weak links, to fabricate nano-SQUIDs which show critical current oscillations at temperatures up to 1.5?K and magnetic flux densities up to over 20?mT. These nano-SQUIDs exhibit flux modulation depths intermediate between all-Al and all-Nb devices, with some of the desirable characteristics of both. The suspended geometry is attractive for magnetic single nanoparticle measurements.

  9. Jaszczak et al. 1 MICRO-AND NANO-SCALE GRAPHITE CONES AND TUBES FROM HACKMAN

    E-Print Network [OSTI]

    Jaszczak, John A.

    of micro- and nano-scale RGS. The largest of the RGS are hollow scrolls, with the c-axis predominantly at the micro- and nano-scales. The nano-scale cones tend not to be hollow and may have a cone-helix structureJaszczak et al. 1 MICRO- AND NANO-SCALE GRAPHITE CONES AND TUBES FROM HACKMAN VALLEY, KOLA

  10. Nano-compact disks with 400 Gbit/in2 storage density fabricated

    E-Print Network [OSTI]

    Nano-compact disks with 400 Gbit/in2 storage density fabricated using nanoimprint lithography and read with proximal probe Peter R. Kraussa) and Stephen Y. Choub) NanoStructure Laboratory, Department for publication 30 September 1997 Nano-compact disks Nano-CDs with 400 Gbit/in2 topographical bit density nearly

  11. NANO EXPRESS Open Access Resonant frequency of gold/polycarbonate hybrid

    E-Print Network [OSTI]

    Li, Teng

    NANO EXPRESS Open Access Resonant frequency of gold/polycarbonate hybrid nano resonators fabricated on plastics via nano-transfer printing Edward Dechaumphai1 , Zhao Zhang1 , Nathan P Siwak2,3 , Reza Ghodssi2,3 , Teng Li1,4* Abstract We report the fabrication of gold/polycarbonate (Au/PC) hybrid nano resonators

  12. Asynchronous Nano-electronics: Preliminary Investigation Alain J. Martin & Piyush Prakash

    E-Print Network [OSTI]

    Martin, Alain

    Asynchronous Nano-electronics: Preliminary Investigation Alain J. Martin & Piyush Prakash is a preliminary investigation in implement- ing asynchronous QDI logic in molecular nano-electronics, taking apply to nano-CMOS as well. 1. Introduction Currently, molecular nano-electronics is considered

  13. Qubits from tight knots and bent nano-bars

    E-Print Network [OSTI]

    Victor Atanasov; Rossen Dandoloff

    2008-03-21T23:59:59.000Z

    We propose a novel mechanism for creating a qubit based on a tight knot, that is a nano-quantum wire system so small and so cold as to be quantum coherent with respect to curvature-induced effects. To establish tight knots as legitimate candidates for qubits, we propose an effective curvature-induced potential that produces the two-level system and identify the tunnel coupling between the two local states. We propose also a different design of nano-mechanical qubit based on twisted nano-rods. We describe how both devices can be manipulated. Also we outline possible decoherence channels, detection schemes and experimental setups.

  14. Method of producing nano-scaled inorganic platelets

    DOE Patents [OSTI]

    Zhamu, Aruna; Jang, Bor Z.

    2012-11-13T23:59:59.000Z

    The present invention provides a method of exfoliating a layered material (e.g., transition metal dichalcogenide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm. The method comprises (a) dispersing particles of a non-graphite laminar compound in a liquid medium containing therein a surfactant or dispersing agent to obtain a stable suspension or slurry; and (b) exposing the suspension or slurry to ultrasonic waves at an energy level for a sufficient length of time to produce separated nano-scaled platelets. The nano-scaled platelets are candidate reinforcement fillers for polymer nanocomposites.

  15. Development of novel nano-composite membranes as introduction systems for mass spectrometers: Contrasting nano-composite membranes and conventional inlet systems.

    E-Print Network [OSTI]

    Miranda, Luis

    2013-01-01T23:59:59.000Z

    ??This dissertation presents the development of novel nano-composite membranes as introduction systems for mass spectrometers. These nano-composite membranes incorporate anodic aluminum oxide (AAO) membranes as (more)

  16. The robust assembly of small symmetric nano-shells

    E-Print Network [OSTI]

    Jef Wagner; Roya Zandi

    2014-10-03T23:59:59.000Z

    Highly symmetric nano-shells are found in many biological systems, such as clathrin cages and viral shells. Several studies have shown that symmetric shells appear in nature as a result of the free energy minimization of a generic interaction between their constituent subunits. We examine the physical basis for the formation of symmetric shells, and using a minimal model we demonstrate that these structures can readily grow from identical subunits under non equilibrium conditions. Our model of nano-shell assembly shows that the spontaneous curvature regulates the size of the shell while the mechanical properties of the subunit determines the symmetry of the assembled structure. Understanding the minimum requirements for the formation of closed nano-shells is a necessary step towards engineering of nano-containers, which will have far reaching impact in both material science and medicine.

  17. Optical Nano-Imaging of Graphene and Beyond | Argonne National...

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

    Optical Nano-Imaging of Graphene and Beyond April 6, 2015 4:00PM to 5:00PM Presenter Zhe Fei, CNM Location Building 241 Type Seminar Series Integrated Imaging Initiative Seminar...

  18. Nano-scale scratching in chemical-mechanical polishing

    E-Print Network [OSTI]

    Eusner, Thor

    2008-01-01T23:59:59.000Z

    During the chemical-mechanical polishing (CMP) process, a critical step in the manufacture of ultra-large-scale integrated (ULSI) semiconductor devices, undesirable nano-scale scratches are formed on the surfaces being ...

  19. A New Route to Nano Self-Assembly

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

    A New Route to Nano Self-Assembly Print If the promise of nanotechnology is to be fulfilled, nanoparticles will have to be able to make something of themselves. An important...

  20. In situ XAS Characterization of Catalytic Nano-Materials with...

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

    XAS Characterization of Catalytic Nano-Materials with Applications to Fuel Cells and Batteries Friday, July 12, 2013 - 11:00am SLAC, Conference Room 137-322 Presented by Qingying...

  1. Latent heat fluxes through nano-engineered porous materials

    E-Print Network [OSTI]

    Traum, Matthew J. (Matthew Jason), 1977-

    2007-01-01T23:59:59.000Z

    Micro- and nano-scale truss architectures provide mechanical strength, light weight, and breatheability in polymer barriers. Liquid evaporation and transport of resulting vapor through truss voids (pores) cools surfaces ...

  2. Supramolecular NanoStamping (SuNS) : fabricating nano/bio devices using DNA as a movable type

    E-Print Network [OSTI]

    Yu, Arum Amy

    2007-01-01T23:59:59.000Z

    When a useful device is developed, it always requires a mass-production technique to industrialize it. In the era of nano/biotechnology, the development of printing techniques has not followed the speed of the inventions ...

  3. Nano-Electro-Mechanical (NEM) Relay Devices and Technology for Ultra-Low Energy Digital Integrated Circuits

    E-Print Network [OSTI]

    Nathanael, Rhesa

    2012-01-01T23:59:59.000Z

    Technology 3.1 Introduction Nano-electro-mechanical (NEM)improvements, a scaled nano-relay technology with optimizedNano-Electro-Mechanical (NEM) Relay Devices and Technology

  4. Formation of surface nano-structures by plasma expansion induced by highly charged ions

    SciTech Connect (OSTI)

    Moslem, W. M. [Department of Physics, Faculty of Science, Port Said University, Port Said (Egypt); Centre for Theoretical Physics, The British University in Egypt (BUE), El-Shorouk City, Cairo (Egypt) and International Centre for Advanced Studies in Physical Sciences, Faculty of Physics and Astronomy, Ruhr University Bochum, D-44780 Bochum (Germany); El-Said, A. S. [Physics Department, King Fahd University of Petroleum and Minerals, Dhahran 31261 (Saudi Arabia); Nuclear and Radiation Physics Laboratory, Physics Department, Faculty of Science, Mansoura University, 35516 Mansoura (Egypt) and Institute of Ion Beam Physics and Materials Research, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Bautzner Landstr. 128, 01328 Dresden (Germany)

    2012-12-15T23:59:59.000Z

    Slow highly charged ions (HCIs) create surface nano-structures (nano-hillocks) on the quartz surface. The formation of hillocks was only possible by surpassing a potential energy threshold. By using the plasma expansion approach with suitable hydrodynamic equations, the creation mechanism of the nano-hillocks induced by HCIs is explained. Numerical analysis reveal that within the nanoscale created plasma region, the increase of the temperature causes an increase of the self-similar solution validity domain, and consequently the surface nano-hillocks become taller. Furthermore, the presence of the negative (positive) nano-dust particles would lead to increase (decrease) the nano-hillocks height.

  5. NanoComposite Stainless Steel Powder Technologies

    SciTech Connect (OSTI)

    DeHoff, R.; Glasgow, C. (MesoCoat, Inc.)

    2012-07-25T23:59:59.000Z

    Oak Ridge National Laboratory has been investigating a new class of Fe-based amorphous material stemming from a DARPA, Defense Advanced Research Projects Agency initiative in structural amorphous metals. Further engineering of the original SAM materials such as chemistry modifications and manufacturing processes, has led to the development of a class of Fe based amorphous materials that upon processing, devitrify into a nearly homogeneous distribution of nano sized complex metal carbides and borides. The powder material is produced through the gas atomization process and subsequently utilized by several methods; laser fusing as a coating to existing components or bulk consolidated into new components through various powder metallurgy techniques (vacuum hot pressing, Dynaforge, and hot isostatic pressing). The unique fine scale distribution of microstructural features yields a material with high hardness and wear resistance compared to material produced through conventional processing techniques such as casting while maintaining adequate fracture toughness. Several compositions have been examined including those specifically designed for high hardness and wear resistance and a composition specifically tailored to devitrify into an austenitic matrix (similar to a stainless steel) which poses improved corrosion behavior.

  6. INTRODUCTION Future mobile communication systems will con-

    E-Print Network [OSTI]

    . In future mobile networks, wherein multiple types of cells (e.g., macro, micro, pico, and even femto, including network operator, vendor, access provider, ser- vice provider, software developer, contentS) of mobile networks have been greatly improved. New wireless service models and applications have been

  7. Overney -UW NanoScience Lab Research Activities UW NANOLAB -Research Activities

    E-Print Network [OSTI]

    Overney - UW NanoScience Lab Research Activities 9/2008 1 UW ­ NANOLAB - Research Activities René M..................................................................................... 49 #12;Overney - UW NanoScience Lab 1. Intra- and Intermolecular Constraints 9/2008 2 1. Intra

  8. Automated metal-free multiple-column nanoLC for improved phosphopeptid...

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

    metal-free multiple-column nanoLC for improved phosphopeptide analysis sensitivity and throughput. Automated metal-free multiple-column nanoLC for improved phosphopeptide analysis...

  9. Reductive Sequestration Of Pertechnetate (99TcO4) By Nano...

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

    Sequestration Of Pertechnetate (99TcO4) By Nano Zerovalent Iron (nZVI) Transformed By Abiotic Sulfide. Reductive Sequestration Of Pertechnetate (99TcO4) By Nano...

  10. Photothermal nano-cavities for ultra-sensitive chem-bio detection

    E-Print Network [OSTI]

    Hu, Juejun

    Nano-cavity photothermal spectroscopy is a novel technique for ultra-sensitive chem-bio detection. We illustrate that through simultaneous localization of optical and thermal interactions in a planar nano-cavity, detection ...

  11. Formation of nano-crystalline todorokite from biogenic Mn Xiong Han Feng a,1

    E-Print Network [OSTI]

    Sparks, Donald L.

    Formation of nano-crystalline todorokite from biogenic Mn oxides Xiong Han Feng a,1 , Mengqiang Zhu oxides in the environment. Additionally this method may be a viable biosynthesis route for porous, nano

  12. Nano-DESI Source for OA Samples Analyses. EMSL Research and Capability Development Proposals

    E-Print Network [OSTI]

    Nano-DESI Source for OA Samples Analyses. EMSL Research and Capability Development Proposals Electrospray Ionization (nano-DESI) method developed as part of this project and other atmospheric ionization

  13. Nano scale devices for plasmonic nanolithography and rapid sensing of bacteria

    E-Print Network [OSTI]

    Seo, Sungkyu

    2009-05-15T23:59:59.000Z

    This dissertation contains two different research topics. One is a Nano Scale Device for Plasmonic Nanolithography Optical Antenna and the other is a Nano Scale Device for Rapid Sensing of Bacteria SEPTIC. Since these two different research...

  14. Ultra-efficient, Robust and Well-defined Nano-Array based Monolithic...

    Broader source: Energy.gov (indexed) [DOE]

    Ultra-efficient, Robust and Well-defined Nano-Array based Monolithic Catalysts Ultra-efficient, Robust and Well-defined Nano-Array based Monolithic Catalysts This presentation...

  15. E-Print Network 3.0 - arbitrarily shaped nano- Sample Search...

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

    nano- Search Powered by Explorit Topic List Advanced Search Sample search results for: arbitrarily shaped nano- Page: << < 1 2 3 4 5 > >> 1 Materials Science and Engineering B 117...

  16. Top 10 Nano & Chem Eng TMVogel, updated Fall 2012 Top 10 Things UCSD Nanoengineering &

    E-Print Network [OSTI]

    Hampton, Randy

    Top 10 Nano & Chem Eng TMVogel, updated Fall 2012 Top 10 Things UCSD Nanoengineering & Chemical Engineering Researchers Need to Know http://libguides.ucsd.edu/nano http://libguides.ucsd.edu/chemeng http

  17. E-Print Network 3.0 - atomic nano-generators actinium-225-labeled...

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

    nano-generators actinium-225-labeled Search Powered by Explorit Topic List Advanced Search Sample search results for: atomic nano-generators actinium-225-labeled Page: << < 1 2 3 4...

  18. E-Print Network 3.0 - active coated nano-particle Sample Search...

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

    coated nano-particle Search Powered by Explorit Topic List Advanced Search Sample search results for: active coated nano-particle Page: << < 1 2 3 4 5 > >> 1 6.SUMMARY AND OUTLOOK...

  19. E-Print Network 3.0 - angle deposited nano-rough Sample Search...

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

    nano-rough Search Powered by Explorit Topic List Advanced Search Sample search results for: angle deposited nano-rough Page: << < 1 2 3 4 5 > >> 1 Advanced techniques for glancing...

  20. POLYMER PROGRAM SEMINAR "Single-chain Nanoparticles: Synthesis of Nano-scale

    E-Print Network [OSTI]

    Alpay, S. Pamir

    POLYMER PROGRAM SEMINAR "Single-chain Nanoparticles: Synthesis of Nano-scale Architectures:00 AM, IMS Room 20 Recent efforts by our lab to fold single polymer chains into nano

  1. The Enzyme-mimic Activity of Ferric Nano-Core Residing in Ferritin...

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

    The Enzyme-mimic Activity of Ferric Nano-Core Residing in Ferritin and Its Biosensing Applications. The Enzyme-mimic Activity of Ferric Nano-Core Residing in Ferritin and Its...

  2. Fractional Synchronization of Spin-Torque Nano-Oscillators Sergei Urazhdin and Phillip Tabor

    E-Print Network [OSTI]

    Weeks, Eric R.

    regimes (Devil's staircase) in a spin-torque nano-oscillator driven by a microwave field. These regimes

  3. A Scalable Soft Spot Analysis Methodology for Compound Noise Effects in Nano-meter Circuits

    E-Print Network [OSTI]

    California at San Diego, University of

    A Scalable Soft Spot Analysis Methodology for Compound Noise Effects in Nano-meter Circuits Chong@ece.ucsd.edu ABSTRACT Circuits using nano-meter technologies are becoming increasingly vulnerable to signal interference methodology to study the vulnerability of digital ICs exposed to nano-meter noise and transient soft errors

  4. Elastic properties of transparent nano-polycrystalline diamond measured by GHz-ultrasonic interferometry and resonant

    E-Print Network [OSTI]

    Jacobsen, Steven D.

    Elastic properties of transparent nano-polycrystalline diamond measured by GHz-ultrasonic interferometry Sphere resonance Nano-polycrystalline diamond NPD Elastic properties Superhard materials a b s t r a c t The sound velocities and elastic moduli of transparent nano-polycrystalline diamond (NPD) have

  5. Nano Res 1 Construction of two-dimensional hydrogen clusters on

    E-Print Network [OSTI]

    Gao, Hongjun

    Nano Res 1 Construction of two-dimensional hydrogen clusters on Au(111) directed by phthalocyanine molecules Kai Yang, Wende Xiao, Liwei Liu, Xiangmin Fei, Hui Chen, Shixuan Du and Hong-Jun Gao () Nano Res. Nano Research DOI 10.1007/s1227401303734 #12;1 TABLE OF CONTENTS (TOC) Construction of Two

  6. Nano-structured vanadium: processing and mechanical properties under quasi-static and dynamic compression

    E-Print Network [OSTI]

    Wei, Qiuming

    Nano-structured vanadium: processing and mechanical properties under quasi-static and dynamic form 16 September 2003; accepted 9 October 2003 Abstract We have processed fully dense, nano that the grain size of the consolidated V is around 100 nm. Mechanical properties of the nano-structured V were

  7. NANO TOOLS & PRODUCTS IN MICRO & NANOTECHNOLOGY Engineered Carbon Nanotube (CNT) and

    E-Print Network [OSTI]

    MICRO NANO TOOLS & PRODUCTS IN MICRO & NANOTECHNOLOGY Engineered Carbon Nanotube (CNT aligned nanorods, helices, and chevrons. Hybrid Nano-CMOS Chips--Hewlett-Packard Laboratories www coating. The result is a uni- form, durable nano-thin film treatment that delivers quantum physical

  8. Hysteresis Modeling and Inverse Feedforward Control of an AFM Piezoelectric Scanner Based on Nano Images

    E-Print Network [OSTI]

    Li, Yangmin

    Hysteresis Modeling and Inverse Feedforward Control of an AFM Piezoelectric Scanner Based on Nano of micro/nano technology. As a critical part of AFM system, the piezoelectric scanner exists many defects in this paper possess a good performance for AFM nano imaging. Index Terms-- Hysteresis modeling, feedforward

  9. Nano-CMOS Mixed-Signal Circuit Metamodeling Techniques: A Comparative Study

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    Nano-CMOS Mixed-Signal Circuit Metamodeling Techniques: A Comparative Study Oleg Garitselov1 , Saraju P. Mohanty2 , Elias Kougianos3 , and Priyadarsan Patra4 NanoSystem Design Laboratory (NSDL, http Abstract--Fast design space exploration of complex nano- CMOS mixed-signal circuits is an important problem

  10. Fabrication of nano-structural arrays by channeling pulsed atomic beams through an intensity-modulated

    E-Print Network [OSTI]

    Zhu, Xiangdong

    Fabrication of nano-structural arrays by channeling pulsed atomic beams through an intensity-dimensional nano-structure arrays by passing a pulsed atomic beam through an intensity-modulated continuous of ``cooling'' along the longitudinal direction. This enables fabrication of vertically heterogeneous nano

  11. Nano Res (2010) 3: 170173170 Synthesis and Characterization of WS2 Inorganic Nanotubes with

    E-Print Network [OSTI]

    Davis, Ben G.

    Nano Res (2010) 3: 170­173170 Synthesis and Characterization of WS2 Inorganic Nanotubes]. Folding and bonding of edge atoms on the periphery of the quasi two-dimensional planar nano- structure this nanotubular structure is suitable for capillary filling using molten metal halides. Nano Res (2010) 3: 170

  12. The Hebrew University Center for Nanoscience and Nanotechnology UHUJ Nano-Art

    E-Print Network [OSTI]

    Einat, Aharonov

    The Hebrew University Center for Nanoscience and Nanotechnology UHUJ Nano-Art Annual Conference of art based on nanotechnology. Prizes will be awarded to top three selected works. Nano-Art features nanolandscapes, natural or manmade structures of matter at the nano scale, e.g., molecular and atomic scales

  13. DNA "Nano-Claw": Logic-Based Autonomous Cancer Targeting and Mingxu You,,

    E-Print Network [OSTI]

    Tan, Weihong

    DNA "Nano-Claw": Logic-Based Autonomous Cancer Targeting and Therapy Mingxu You,, Lu Peng, Na Shao for Research at the Bio/Nano Interface, Shands Cancer Center, UF Genetics Institute, McKnight Brain Institute a DNA- based device, called "Nano-Claw". Combining the special structure-switching properties of DNA

  14. The Hebrew University Center for Nanoscience and Nanotechnology UHUJ Nano-Art

    E-Print Network [OSTI]

    Simon, Emmanuel

    The Hebrew University Center for Nanoscience and Nanotechnology UHUJ Nano-Art Annual Conference of works of art based on nanotechnology. Prizes will be awarded to top three selected works. Nano-Art features nanolandscapes, natural or manmade structures of matter at the nano (sub- micro) scale, e

  15. PERSPECTIVES Nano-to-Microscale Mechanical Switches and Fuses Mediate Adhesive Contacts between

    E-Print Network [OSTI]

    Heinrich, Volkmar

    PERSPECTIVES Nano-to-Microscale Mechanical Switches and Fuses Mediate Adhesive Contacts between to their molecular origins. The present work focuses on nano-to-microscale regulatory aspects that mediate and that they had to be primarily mechanical. Accordingly, our experimental approach was to study in vitro the nano

  16. Advanced Robotics Journal, Vol. X, No. Y, 2002 (to appear) SCALED TELEOPERATION SYSTEM FOR NANO SCALE

    E-Print Network [OSTI]

    Sitti, Metin

    Advanced Robotics Journal, Vol. X, No. Y, 2002 (to appear) SCALED TELEOPERATION SYSTEM FOR NANO for teleoperated nano scale object interaction and manipulation. Design specifications for a bilateral scaled system, initial experiments are realized for interacting with nano scale surfaces. It is shown that fine

  17. NANO CENTER Annual Conference 2014 Wednesday April 23, 2014 Thursday April 24, 2014

    E-Print Network [OSTI]

    Einat, Aharonov

    NANO CENTER Annual Conference 2014 Wednesday April 23, 2014 Thursday April 24, 2014 Royal Rimonim Transport in Single DNA-Based Molecules Yehonadav Bekenstein, Chem & Phys Nano Prize Winner Patterned Research Development of Novel Nano Delivery Systems of Hydrophilic Biomacromolecules for Improved Therapy

  18. Nano-diamonds in the Universe A.C. Andersen,1

    E-Print Network [OSTI]

    Andersen, Anja C.

    Nano-diamonds in the Universe A.C. Andersen,1 H. Mutschke,2 L. Binette3 , S. Höfner4 1 NORDITA, SE-75120 Uppsala Sweden The first direct evidence for nano-diamonds in space came from meteorites. Laboratory analyses on fine-grained diamond residues from primitive meteorites have shown that nano- diamonds

  19. Nano/Micro Engineered and Molecular Systems The 8th Annual IEEE International Conference on

    E-Print Network [OSTI]

    Sanders, Seth

    Nano/Micro Engineered and Molecular Systems The 8th Annual IEEE International Conference on April 7. Nanomedicine 4. Nanobiology, Nano-bio-informatics 5. Molecular Sensors, Actuators, and Systems 6. Carbon Nanotube and Graphene based Devices and Systems 7. Microfluidics and Nanofluidics 8. Micro and Nano Heat

  20. iPlane Nano: Path Prediction for Peer-to-Peer Applications Harsha V. Madhyastha

    E-Print Network [OSTI]

    Krishnamurthy, Arvind

    iPlane Nano: Path Prediction for Peer-to-Peer Applications Harsha V. Madhyastha Ethan Katz present the design and implementa- tion of iPlane Nano, a library for delivering Internet path information to peer-to-peer applications. iPlane Nano is itself a peer-to-peer application, and scales to a large

  1. Nano-mineralogy studies by advanced electron microscopy Chi Ma and George R. Rossman

    E-Print Network [OSTI]

    Ma, Chi

    Nano-mineralogy studies by advanced electron microscopy Chi Ma and George R. Rossman Division and planetary materials easier and faster down to nano-scales. Small but new minerals with important geological significance are being discovered. Nano-features are being discovered in many common minerals and gems, which

  2. Method for nano-pumping using carbon nanotubes

    DOE Patents [OSTI]

    Insepov, Zeke (Darien, IL); Hassanein, Ahmed (Bolingbrook, IL)

    2009-12-15T23:59:59.000Z

    The present invention relates generally to the field of nanotechnology, carbon nanotubes and, more specifically, to a method and system for nano-pumping media through carbon nanotubes. One preferred embodiment of the invention generally comprises: method for nano-pumping, comprising the following steps: providing one or more media; providing one or more carbon nanotubes, the one or more nanotubes having a first end and a second end, wherein said first end of one or more nanotubes is in contact with the media; and creating surface waves on the carbon nanotubes, wherein at least a portion of the media is pumped through the nanotube.

  3. Mechanical, Electrical, and Environmental Evaluation of Nano-Miniature Connectors

    SciTech Connect (OSTI)

    Hilton, J.W.

    2001-07-30T23:59:59.000Z

    Because of their small size (0.025-inch spacing), nano-miniature connectors have been chosen for JTA telemetry applications. At the time they were chosen, extensive testing had not been done to determine the mechanical, electrical, and environmental characteristics of these connectors at the levels required for use by weapon systems. Since nano-miniature connectors use some unique plating and wire crimping processes not used in most design agency connectors, it was decided that these properties should be tested thoroughly. This report describes the results of that testing.

  4. From Nano-Electronics and Photonics to Renewable Energy

    E-Print Network [OSTI]

    Smy, Tom

    From Nano-Electronics and Photonics to Renewable Energy Tom Smy Department of Electronics, Carleton University Questions are welcome! #12;OUTLINE ·Introduction: to EE and Engineering Physics ·Renewable Energy and Renewable Energy Engineering #12;B.Eng. In Engineering Physics · A focused education which is suitable

  5. NORTHERN ILLINOIS UNIVERSITY Distinguished NanoScience Fellowship Application

    E-Print Network [OSTI]

    Kostic, Milivoje M.

    NORTHERN ILLINOIS UNIVERSITY Distinguished NanoScience Fellowship Application Students should submit this form to the Nanoscience Fellowship Committee by the applicant advisor. Attach a brief summary of your performed and proposed research in nanoscience, together with a resume or curriculum vitae (if

  6. Hosts: Sponsors: NorTex Nano Summit: Agenda

    E-Print Network [OSTI]

    and Communications, NTNU Pawel Sikorski Professor of Physics, NTNU Nano Energy 1 ­ Oil & Gas Session Chairs: Mc William W. Akers Professor in Chemical Engineering, Associate Dean for Energy in the School of Engineering permitting Poster Session: Students ­ 3:30 Mingling, with wine & cheese Martel Prizes Awarded ­ 5:00 All

  7. NANO REVIEW Enhancing Solar Cell Efficiencies through 1-D Nanostructures

    E-Print Network [OSTI]

    Chen, Junhong

    include dye-sensitized solar cells, quantum- dot-sensitized solar cells, and p-n junction solar cells their efficiencies more practical. Now the third-generation solar cells, such as dye-sensitized solar cells (DSSCsNANO REVIEW Enhancing Solar Cell Efficiencies through 1-D Nanostructures Kehan Yu ? Junhong Chen

  8. Polymer Communication Fibers from polypropylene/nano carbon ber composites

    E-Print Network [OSTI]

    Srinivasarao, Mohan

    Polymer Communication Fibers from polypropylene/nano carbon ®ber composites Satish Kumara,*, Harit Doshia , Mohan Srinivasaraoa , Jung O. Parka , David A. Schiraldib a School of Textile and Fiber in revised form 26 October 2001; accepted 31 October 2001 Abstract Fibers from polypropylene

  9. NANO-SCALE CALORIMETRY OF ISOLATED POLYETHYLENE SINGLE CRYSTALS

    E-Print Network [OSTI]

    Allen, Leslie H.

    #12;NANO-SCALE CALORIMETRY OF ISOLATED POLYETHYLENE SINGLE CRYSTALS BY ALEX TAN KWAN B.S., Stanford) device, the nanocalorimeter, it was possible to investigate the melting of isolated polyethylene (PE, a simple Ni-foil calorimeter, to measure the heat capacity of a thin polyethylene film to verify

  10. NANO EXPRESS Open Access Multiscale investigation of graphene layers on

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    NANO EXPRESS Open Access Multiscale investigation of graphene layers on 6H-SiC(000-1) Antoine , Cecile Naud2 , Jean-Yves Veuillen2* Abstract In this article, a multiscale investigation of few graphene, the authors show that the UHV growth yields few layer graphene (FLG) with an average thickness given by Auger

  11. Bioremediation of Uranium Plumes with Nano-scale

    E-Print Network [OSTI]

    Fay, Noah

    (IV) (UO2[s], uraninite) Anthropogenic · Release of mill tailings during uranium mining - MobilizationBioremediation of Uranium Plumes with Nano-scale Zero-valent Iron Angela Athey Advisers: Dr. Reyes Undergraduate Student Fellowship Program April 15, 2011 #12;Main Sources of Uranium Natural · Leaching from

  12. From Heat to Electricity: How "nano" Saved Thermoelectrics

    E-Print Network [OSTI]

    Kanatzidis, Mercouri G

    · Utilities · Chemical plants Space power Remote Power Generation Solar energy Geothermal power generationFrom Heat to Electricity: How "nano" Saved Thermoelectrics Sponsored by Mercouri Kanatzidis brittle materials strong Conclusions #12;Heat to Electrical Energy Directly Up to 20% conversion

  13. "Interdisciplinary research on nano-enabled and bioinspired materials

    E-Print Network [OSTI]

    Acton, Scott

    , Science Daily, MSNBC, and New York Times. The innovation on cotton textile based green manufacturing green manufacturing, is indeed innovative. With two NSF grants and strong industry support, this group"Interdisciplinary research on nano- enabled and bioinspired materials design, manufacturing

  14. 30-MHz Power Inductor Using Nano-Granular Magnetic Material

    E-Print Network [OSTI]

    -granular metal-nonmetal soft magnetic materials con- sist of nano-grains of a magnetic metal in a ceramic matrix [1][8]. The ceramic leads to high overall resistivity, while the metal grains are too small of their characteristics are similar to nanocrystalline materials, but the ceramic leads to much higher resistivity

  15. Carbon Nanotube GHz Nano-Resonator Shengdong Li1

    E-Print Network [OSTI]

    Tang, William C

    Carbon Nanotube GHz Nano-Resonator Shengdong Li1 , Zhen Yu1 , Sheng-Feng Yen1 , Peter J. Burke1 walled carbon nanotube. Both semiconducting and metallic nanotubes are measured. Using a semiconducting signal processing components based on carbon nanotubes. Index Terms -- Nanotechnology, Resonators, Tuning

  16. Superconducting Wires Enabled by Nanodots wins Nano50TM Award

    E-Print Network [OSTI]

    includes nanoscale columns of non-superconducting material embedded within the superconductorSuperconducting Wires Enabled by Nanodots wins Nano50TM Award HTS Wires Enabled via 3D Self-Assembly of Insulating Nanodots Background · For most large-scale applications of high-temperature superconducting (HTS

  17. Software Design 2 (Arduino Nano) BodyBody--RemotesRemotes

    E-Print Network [OSTI]

    Spletzer, John R.

    Software Design 2 (Arduino Nano) BodyBody--RemotesRemotes Gesture Based Appliance Control System the room Large wireless range, e.g. 100 m range with 1mW XBees Safely separate the Arduino from input ways to lower cost further Switch to Arduino Mini Light Develop our own wireless modules Jacob

  18. Synthesis of nano WC/Co for tools and dies

    SciTech Connect (OSTI)

    Stiglich, J.J.; Yu, C.C.; Sudarshan, T.S. [Materials Modification Inc., Fairfax, VA (United States)

    1996-06-01T23:59:59.000Z

    Materials for cutting tools and dies must have high hardness, high toughness, and high wear/erosion resistance. Tungsten carbide (WC) has been well known for its exceptional hardness and wear/erosion resistance. However, its low toughness causes brittle fracture. Addition of ductile metals, such as cobalt, can improve its toughness. To obtain the optimum results, WC has to be evenly distributed in a continuous cobalt matrix, which has been a technical challenge at high WC contents (94--97wt%). It is also well established that toughness of ceramic materials can be increased remarkably, without sacrificing hardness, by reducing the grain size. Significant improvement of microhardness has been observed in nano-sized composites over micron-sized materials. In the current investigation, nano-sized WC particles, synthesized by carburizing tungstic acid powders, are first coated with Co compound individually and uniformly by a solution precipitation process. The coated WC powders are then processed in H{sub 2} to obtain individually Co coated nano particles, which are subsequently consolidated by various techniques emphasizing short ({approximately} minutes) exposure times at high temperature. This paper will present some of their experiences and will also highlight some of the basic problems associated with synthesis and consolidation of nano particles.

  19. Information Nano-Technologies: Transition from Classical to Quantum

    E-Print Network [OSTI]

    Alexander Yu. Vlasov

    2009-12-04T23:59:59.000Z

    In this presentation are discussed some problems, relevant with application of information technologies in nano-scale systems and devices. Some methods already developed in quantum information technologies may be very useful here. Here are considered two illustrative models: representation of data by quantum bits and transfer of signals in quantum wires.

  20. NANO REVIEW Open Access Thermal conductivity and thermal boundary

    E-Print Network [OSTI]

    Boyer, Edmond

    NANO REVIEW Open Access Thermal conductivity and thermal boundary resistance of nanostructures and the thermal transport prop- erties is a key point to design materials with preferred thermal properties with the heat dissipation on them. The influence of the interfacial roughness on the thermal conductivity

  1. Nano Res (2010) 3: 452458452 Aqueous Supercapacitors on Conductive Cotton

    E-Print Network [OSTI]

    Cui, Yi

    Nano Res (2010) 3: 452­458452 Aqueous Supercapacitors on Conductive Cotton Mauro Pasta1,2 , Fabio the fabrication of wearable supercapacitors using cotton fabric as an essential component. Carbon nanotubes are conformally coated onto the cotton fibers, leading to a highly electrically conductive interconnecting network

  2. STM/AFM (PicoSPM) | EMSL

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas ConchasPassive Solar HomePromisingStoriesSANDIA REPORTSORNRecoverynatural

  3. West Pico Food | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:SeadovCooperative Jump to: navigation, search Name:Perrine, Florida: Energy Resources

  4. Field Testing of Nano-PCM Enhanced Building Envelope Components

    SciTech Connect (OSTI)

    Biswas, Kaushik [ORNL; Childs, Phillip W [ORNL; Atchley, Jerald Allen [ORNL

    2013-08-01T23:59:59.000Z

    The U.S. Department of Energy s (DOE) Building Technologies Program s goal of developing high-performance, energy efficient buildings will require more cost-effective, durable, energy efficient building envelopes. Forty-eight percent of the residential end-use energy consumption is spent on space heating and air conditioning. Reducing envelope-generated heating and cooling loads through application of phase change material (PCM)-enhanced envelope components can facilitate maximizing the energy efficiency of buildings. Field-testing of prototype envelope components is an important step in estimating their energy benefits. An innovative phase change material (nano-PCM) was developed with PCM encapsulated with expanded graphite (interconnected) nanosheets, which is highly conducive for enhanced thermal storage and energy distribution, and is shape-stable for convenient incorporation into lightweight building components. During 2012, two test walls with cellulose cavity insulation and prototype PCM-enhanced interior wallboards were installed in a natural exposure test (NET) facility at Charleston, SC. The first test wall was divided into four sections, which were separated by wood studs and thin layers of foam insulation. Two sections contained nano-PCM-enhanced wallboards: one was a three-layer structure, in which nano-PCM was sandwiched between two gypsum boards, and the other one had PCM dispersed homogeneously throughout graphite nanosheets-enhanced gypsum board. The second test wall also contained two sections with interior PCM wallboards; one contained nano-PCM dispersed homogeneously in gypsum and the other was gypsum board containing a commercial microencapsulated PCM (MEPCM) for comparison. Each test wall contained a section covered with gypsum board on the interior side, which served as control or a baseline for evaluation of the PCM wallboards. The walls were instrumented with arrays of thermocouples and heat flux transducers. Further, numerical modeling of the walls containing the nano-PCM wallboards were performed to determine their actual impact on wall-generated heating and cooling loads. The models were first validated using field data, and then used to perform annual simulations using Typical Meteorological Year (TMY) weather data. This article presents the measured performance and numerical analysis to evaluate the energy-saving potential of the nano-PCM-enhanced building components.

  5. Chapter 5 Cytoskeletal Mechanics and Rheol-Hamed Hatami-Marbini1,

    E-Print Network [OSTI]

    Mofrad, Mohammad R. K.

    for measuring forces at pico- newton resolutions and displacements over nano-meter scales have greatly into a small hollow cylin- der w

  6. Nonlinear dynamics of two coupled nano-electromechanical resonators

    E-Print Network [OSTI]

    L. Chotorlishvili; A. Ugulava; G. Mchedlishvili; A. Komnik; S. Wimberger; J. Berakdar

    2011-06-26T23:59:59.000Z

    As a model of coupled nano-electromechanical resonantors we study two nonlinear driven oscillators with an arbitrary coupling strength between them. Analytical expressions are derived for the oscillation amplitudes as a function of the driving frequency and for the energy transfer rate between the two oscillators. The nonlinear restoring forces induce the expected nonlinear resonance structures in the amplitude-frequency characteristics with asymmetric resonance peaks. The corresponding multistable behavior is shown to be an efficient tool to control the energy transfer arising from the sensitive response to small changes in the driving frequency. Our results imply that the nonlinear response can be exploited to design precise sensors for mass or force detection experiments based on nano-electromechanical resonators.

  7. Method of producing exfoliated graphite, flexible graphite, and nano-scaled graphene platelets

    DOE Patents [OSTI]

    Zhamu, Aruna (Centerville, OH); Shi, Jinjun (Columbus, OH); Guo, Jiusheng (Centerville, OH); Jang, Bor Z. (Centerville, OH)

    2010-11-02T23:59:59.000Z

    The present invention provides a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm. The method comprises (a) dispersing particles of graphite, graphite oxide, or a non-graphite laminar compound in a liquid medium containing therein a surfactant or dispersing agent to obtain a stable suspension or slurry; and (b) exposing the suspension or slurry to ultrasonic waves at an energy level for a sufficient length of time to produce separated nano-scaled platelets. The nano-scaled platelets are candidate reinforcement fillers for polymer nanocomposites. Nano-scaled graphene platelets are much lower-cost alternatives to carbon nano-tubes or carbon nano-fibers.

  8. New York Nano-Bio Molecular Information Technology (NYNBIT) Incubator

    SciTech Connect (OSTI)

    Das, Digendra K

    2008-12-19T23:59:59.000Z

    This project presents the outcome of an effort made by a consortium of six universities in the State of New York to develop a Center for Advanced technology (CAT) in the emerging field of Nano-Bio-Molecular Information Technology. The effort consists of activities such as organization of the NYNBIT incubator, collaborative research projects, development of courses, an educational program for high schools, and commercial start-up programs.

  9. A review of nano-optics in metamaterial hybrid heterostructures

    SciTech Connect (OSTI)

    Singh, Mahi R. [Department of Physics and Astronomy, Western University, London N6G 3K7 (Canada)

    2014-03-31T23:59:59.000Z

    We present a review for the nonlinear nano-optics in quantum dots doped in a metamaterial heterostructure. The heterostructure is formed by depositing a metamaterial on a dielectric substrate and ensemble of noninteracting quantum dots are doped near the heterostructure interface. It is shown that there is enhancement of the second harmonic generation due to the surface plasmon polaritons field present at the interface.

  10. Nano-structured polymer composites and process for preparing same

    DOE Patents [OSTI]

    Hillmyer, Marc; Chen, Liang

    2013-04-16T23:59:59.000Z

    A process for preparing a polymer composite that includes reacting (a) a multi-functional monomer and (b) a block copolymer comprising (i) a first block and (ii) a second block that includes a functional group capable of reacting with the multi-functional monomer, to form a crosslinked, nano-structured, bi-continuous composite. The composite includes a continuous matrix phase and a second continuous phase comprising the first block of the block copolymer.

  11. In Conversation with Jim Schuck: Nano-optics

    ScienceCinema (OSTI)

    Jim Schuck and Alice Egan

    2010-01-08T23:59:59.000Z

    Sponsored by Berkeley Lab's Materials Sciences Division (MSD), "In Conversation with" is a next generation science seminar series. Host Alice Egan is the assistant to MSD Director Miquel Salmeron. Alice conducts a fun and informative interview, touching on the lives and work of the guest. The first In Conversation With took place July 9 with Jim Schuck, a staff scientist in the Molecular Foundry's Imaging and Manipulation Facility as our first guest. He discussed the world of Nano-optics.

  12. Slip casting nano-particle powders for making transparent ceramics

    DOE Patents [OSTI]

    Kuntz, Joshua D. (Livermore, CA); Soules, Thomas F. (Livermore, CA); Landingham, Richard Lee (Livermore, CA); Hollingsworth, Joel P. (Oakland, CA)

    2011-04-12T23:59:59.000Z

    A method of making a transparent ceramic including the steps of providing nano-ceramic powders in a processed or unprocessed form, mixing the powders with de-ionized water, the step of mixing the powders with de-ionized water producing a slurry, sonifing the slurry to completely wet the powder and suspend the powder in the de-ionized water, separating very fine particles from the slurry, molding the slurry, and curing the slurry to produce the transparent ceramic.

  13. Nano-pore based characterization of branched polymers

    E-Print Network [OSTI]

    Takahiro Sakaue; Franoise Brochard-Wyart

    2014-01-31T23:59:59.000Z

    We propose a novel characterization method of randomly branched polymers based on the geometrical property of such objects in confined spaces. The central idea is that randomly branched polymers exhibit passing/clogging transition across the nano-channel as a function of the channel size. This critical channel size depends on the degree of the branching, whereby allowing the extraction of the branching information of the molecule.

  14. Multi mode nano scale Raman echo quantum memory

    E-Print Network [OSTI]

    S. A. Moiseev; E. S. Moiseev

    2010-01-31T23:59:59.000Z

    Low loss magnetic surface plasmon polariton (SPP) modes characterized by enhanced electrical field component and subwavelength confinement on the dielectric and negative-index metamaterial interface are presented. We demonstrate a possibility of storage and perfect retrieval of the low loss magnetic SPP fields by using a photon echo quantum memory on Raman atomic transition. We describe specific properties of the proposed technique which opens a possibility for efficient nano scale multi-mode quantum memory.

  15. Stabilized Spinels and Nano Olivines | Department of Energy

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

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage » SearchEnergyDepartmentScopingOverview * AnalyzerNano Olivines Stabilized

  16. Error rate and power dissipation in nano-logic devices

    E-Print Network [OSTI]

    Kim, Jong Un

    2004-01-01T23:59:59.000Z

    and content by: Laszlo B. Kish (Chair of Commitpte) Ed anc ez-Sinencio (Member) song g (Member) William Marlow (Member) nan Singh (Head of Department) May 2004 Major Subject: Electrical Engineering 111 ABSTRACT Error Rate and Power Dissipation... in Nano-Logic Devices. (May 2004) Jong Un Kim, B. S. ; M. S. ; Ph. D. , Seoul National University Chair of Advisory Committee: Dr. Laszlo B. Kish Current-controlled logic and single electron logic processors have been investigated with respect...

  17. Lightweight Aluminum/Nano composites for Automotive Drive Train Applications

    SciTech Connect (OSTI)

    Chelluri, Bhanumathi; Knoth, Edward A.; Schumaker, Edward J.

    2012-12-14T23:59:59.000Z

    During Phase I, we successfully processed air atomized aluminum powders via Dynamic Magnetic Compaction (DMC) pressing and subsequent sintering to produce parts with properties similar to wrought aluminum. We have also showed for the first time that aluminum powders can be processed without lubes via press and sintering to 100 % density. This will preclude a delube cycle in sintering and promote environmentally friendly P/M processing. Processing aluminum powders via press and sintering with minimum shrinkage will enable net shape fabrication. Aluminum powders processed via a conventional powder metallurgy process produce too large a shrinkage. Because of this, sinter parts have to be machined into specific net shape. This results in increased scrap and cost. Fully sintered aluminum alloy under this Phase I project has shown good particle-to-particle bonding and mechanical properties. We have also shown the feasibility of preparing nano composite powders and processing via pressing and sintering. This was accomplished by dispersing nano silicon carbide (SiC) powders into aluminum matrix comprising micron-sized powders (<100 microns) using a proprietary process. These composite powders of Al with nano SiC were processed using DMC press and sinter process to sinter density of 85-90%. The process optimization along with sintering needs to be carried out to produce full density composites.

  18. Complex Dynamics of Nano-Mechanical Membrane in Cavity Optomechanics

    E-Print Network [OSTI]

    Muhammad Javed Akram; Farhan Saif

    2014-11-03T23:59:59.000Z

    Theoretical analysis of a suspended nano-mechanical membrane subject to an optical driving field in cavity optomechanics is presented, which is confirmed through numerical simulations. In the presence of an optical field between its mirrors a high finesse nano-mechanical resonator acts as an oscillator driven by radiation pressure force. The periodic nature of the radiation pressure force makes the nano-mechanical membrane in the optomechanical system as kicked harmonic oscillator. Mathematically the physical system displays a stochastic web map that helps to understand several properties of the kicked membrane in classical phase space. We find that our web map is area preserving, and displays quasi-periodic symmetrical structures in phase space which we express as q-fold symmetry. It is shown that under appropriate control of certain parameters, namely the frequency ratio (q) and the kicking strength (K), the dynamics of kicked membrane exhibits chaotic dynamics. We provide the stability analysis by means of Lyapunov exponent and survival probability.

  19. Modelling nano-particle agglomeration using local interactions

    E-Print Network [OSTI]

    Gizem Inci; Axel Arnold; Andreas Kronenburg; Rudolf Weeber

    2014-04-30T23:59:59.000Z

    Nano-particle agglomeration plays an important role in processes such as spray drying and particle flame synthesis. These processes have in common that nano-particles collide at low concentrations and get irreversibly linked at the point of contact due to plastic deformation. In this paper, we investigate several models of irreversible connections, which require only local interactions between the colliding nano-particles and thus allow for scalable simulations. The models investigated here connect the particles upon collision by non-bonded strongly attractive interactions, bonded interactions or by binding agents placed at the point of contact. Models using spherically symmetric interactions form compact agglomerates and are therefore unsuitable to study agglomeration. In contrast, models that are either based on both central and angular potentials (type one) or on binding agents (type two) efficiently prevent restructuring of the agglomerates, and are therefore useful for modeling contacts formed by plastic deformation. Moreover, both types of models allow to control the rigidity and by that the degree of restructuring. The first type of model is computationally more efficient at low fractional dimensions of the aggregates, while the second gives easy access to local shear forces, which is important when breaking of agglomerates is to be considered. As example applications, we reproduce the well-known diffusion-limited agglomeration (DLA) and report results on soot aggregation.

  20. Combustion of Nano-Aluminum and Liquid Water G.A. Risha, S.F. Son

    E-Print Network [OSTI]

    Yang, Vigor

    1 Combustion of Nano-Aluminum and Liquid Water G.A. Risha, S.F. Son , R.A. Yetter, V. Yang, and B: Supplemental materials submitted #12;2 Combustion of Nano-Aluminum and Liquid Water G.A. Risha, S.F. Son, R of nano-aluminum (nAl) and liquid water has been conducted. In particular, linear and mass-burning rates

  1. Nano-criticality in small CoO particles To Kenneth Wilson, Cornell, USA

    E-Print Network [OSTI]

    Nano-criticality in small CoO particles To Kenneth Wilson, Cornell, USA "for his theory a neutron scattering study of CoO bulk and nano-powders, we have measured the critical magnetic scattering), and theC -n magnetic coherence length xµ(-e) . We have found a bof 0.31 and 0.35 for bulk and nano

  2. NanoPSE: Nanoscience Problem Solving Environment for atomistic electronic structure of

    E-Print Network [OSTI]

    Dongarra, Jack

    NanoPSE: Nanoscience Problem Solving Environment for atomistic electronic structure to better support FORTRAN. 1. Introduction Through the Nanoscience Theory grant solicitation, LAB-03-17, our

  3. Wear-Resistant NanoCompositeStainless Steel Coatings and Bits...

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

    highpeternanocompositebits.pdf More Documents & Publications Wear-Resistant, Nano-Composite Steel Coatings 300C DDS + 300C MWD Technology Development and Field...

  4. Pushing The Sample-Size Limit Of Infrared Vibrational Nano-Spectroscop...

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

    The Sample-Size Limit Of Infrared Vibrational Nano-Spectroscopy: From Monolayer Towards Single molecule sensitivity. Pushing The Sample-Size Limit Of Infrared Vibrational...

  5. Dilution-Free Analysis from Picoliter Droplets by Nano-Electrospray...

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

    by Nano-Electrospray Ionization Mass Spectrometry. Abstract: The expanding role of microfluidics for chemical and biochemical analysis is due to factors including the favorable...

  6. E-Print Network 3.0 - advanced nano-composite cation-exchanger...

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

    of deformation and damage evolution from DD simulations; Application of the CREEP code to ODS and nano-composited Source: Ghoniem, Nasr M. - Department of Materials...

  7. Nano-Structured Li3V2(PO4)3 /Carbon Composite for High Rate Lithium...

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

    Nano-Structured Li3V2(PO4)3 Carbon Composite for High Rate Lithium Ion Batteries. Nano-Structured Li3V2(PO4)3 Carbon Composite for High Rate Lithium Ion Batteries. Abstract:...

  8. 4.1.2 NANO FOUNTAIN PROBE WITH 40 NM WRITING RESOLUTION K.-H. Kim, N. Moldovan, H. D. Espinosa; "A Novel Nano Fountain Probe with sub-100 nm

    E-Print Network [OSTI]

    Shull, Kenneth R.

    4.1.2 NANO FOUNTAIN PROBE WITH 40 NM WRITING RESOLUTION K.-H. Kim, N. Moldovan, H. D. Espinosa; "A Novel Nano Fountain Probe with sub-100 nm Molecular Writing Resolution", Small, 2005, ASAP. Patent the first "nano-fountain pen" capable of depositing organic ink molecules in patterns as small as 40 nm

  9. NanoPSE: Nanoscience Problem Solving Environment for atomistic electronic structure of semiconductor nanostructures

    E-Print Network [OSTI]

    Dongarra, Jack

    NanoPSE: Nanoscience Problem Solving Environment for atomistic electronic structure for more Home Search Collections Journals About Contact us My IOPscience #12;NanoPSE: Nanoscience Problem the Nanoscience Theory grant solicitation, LAB-03-17, our collaboration of physicists, computational scientists

  10. High tensile modulus of carbon nanotube nano-fibers produced by dielectrophoresis Han Zhang a

    E-Print Network [OSTI]

    Qin, Lu-Chang

    High tensile modulus of carbon nanotube nano-fibers produced by dielectrophoresis Han Zhang a , Jie GPa, much higher than the carbon nanotube fibers spun by other tech- niques. The tensile modulus, electrical, and thermal properties [12­14]. To produce a carbon nanotube nano-fiber, one method

  11. Nano-photonic Light Trapping In Thin Film Solar Dennis M. Callahan Jr.

    E-Print Network [OSTI]

    Winfree, Erik

    Nano-photonic Light Trapping In Thin Film Solar Cells Thesis by Dennis M. Callahan Jr. In Partial. Jeremy Munday for helping me get started on the thin-film GaAs project and for all the time we spent to thank Dr. Jonathan Grandidier for working closely with me for a couple years on the nano sphere solar

  12. Scattering of terahertz radiation on a graphene-based nano-antenna

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Scattering of terahertz radiation on a graphene-based nano-antenna Ignacio Llatser, , Christian. Scattering of the terahertz radiation on a graphene-based nano-antenna is considered. Different electromagnetic models of graphene are discussed and applied to calculate extinction, scattering and absorption

  13. Characterization of Graphene-based Nano-antennas in the Terahertz Band

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Characterization of Graphene-based Nano-antennas in the Terahertz Band (Invited Paper) Ignacio and Communication Technology, KTH Royal Institute of Technology, 16640 Kista, Sweden Email: lemme@kth.se Abstract--Graphene communications at the nanoscale. Indeed, graphene- based nano-antennas just a few micrometers in size have been

  14. Degradation of Polymers Coating Nano-scale Zero Valent Iron Particles used in Groundwater Remediation

    E-Print Network [OSTI]

    Barthelat, Francois

    Degradation of Polymers Coating Nano-scale Zero Valent Iron Particles used in Groundwater chemicals (Zhang, 2003). Nano-scale zero valent iron (NZVI) can be injected into the soil to degrade centrifugation. UV spectrophotometer: The polymers could be quantified when dissolved in pure water or in mineral

  15. Nanotechnology Today 2010: NanoReg & Keller and Heckman Announce Continuation of

    E-Print Network [OSTI]

    Gilchrist, James F.

    Nanotechnology Today 2010: NanoReg & Keller and Heckman Announce Continuation of Popular Nanotechnology Webinar Series Building on last year's popular webinars on the regulation of nanotechnology, Keller and Heckman & NanoReg are pleased to announce Nanotechnology Today 2010, a series of four new

  16. Combustion characteristics of fuel droplets with addition of nano and micron-sized aluminum particles

    E-Print Network [OSTI]

    Qiao, Li

    Combustion characteristics of fuel droplets with addition of nano and micron-sized aluminum Aluminum nanoparticles Microexplosion Particle aggregation a b s t r a c t The burning characteristics of fuel droplets containing nano and micron-sized aluminum particles were investigated. Particle size

  17. Nano scale devices for plasmonic nanolithography and rapid sensing of bacteria

    E-Print Network [OSTI]

    Seo, Sungkyu

    2008-10-10T23:59:59.000Z

    NANO SCALE DEVICES FOR PLASMONIC NANOLITHOGRAPHY AND RAPID SENSING OF BACTERIA A Dissertation by SUNGKYU SEO Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements... for the degree of DOCTOR OF PHILOSOPHY December 2007 Major Subject: Electrical Engineering NANO SCALE DEVICES FOR PLASMONIC NANOLITHOGRAPHY AND RAPID SENSING OF BACTERIA A Dissertation by SUNGKYU SEO...

  18. Method of producing carbon coated nano- and micron-scale particles

    DOE Patents [OSTI]

    Perry, W. Lee; Weigle, John C; Phillips, Jonathan

    2013-12-17T23:59:59.000Z

    A method of making carbon-coated nano- or micron-scale particles comprising entraining particles in an aerosol gas, providing a carbon-containing gas, providing a plasma gas, mixing the aerosol gas, the carbon-containing gas, and the plasma gas proximate a torch, bombarding the mixed gases with microwaves, and collecting resulting carbon-coated nano- or micron-scale particles.

  19. Nano-RK: an Energy-aware Resource-centric RTOS for Sensor Networks

    E-Print Network [OSTI]

    Rajkumar, Ragunathan "Raj"

    Nano-RK: an Energy-aware Resource-centric RTOS for Sensor Networks Anand Eswaran1 , Anthony Rowe1-sensitive in nature. To sup- port such applications, we design and implement Nano-RK, a reservation-based real for CPU and network bandwidth reservations. Tasks can spec- ify their resource demands and the operating

  20. G.M. Wright, VLT Highlight, March 28, 2012 Growth of tungsten nano-tendrils in

    E-Print Network [OSTI]

    1 G.M. Wright, VLT Highlight, March 28, 2012 Growth of tungsten nano-tendrils in the Alcator C morphology of a tungsten divertor modify into fuzz under Helium bombardment in ITER and reactors?! Linear fragile nano-tendrils! Increased unipolar arcing! Likely higher net erosion and W dust production

  1. A Review Of Recent Progress On Nano/micro Scale Nucleate Boiling Fundamentals

    E-Print Network [OSTI]

    Chung, J. N.

    2011-01-01T23:59:59.000Z

    Recent research progress in the area of nano/micro scale nucleate boiling is reviewed and an up-to-date summary is provided with a focus on the advances of fundamental boiling physics. This review examines nano/micro scale ...

  2. Optimization of Nano-Carbon Materials for Hydrogen Sorption

    SciTech Connect (OSTI)

    Yakobson, Boris I [Rice University

    2013-08-02T23:59:59.000Z

    Research undertaken has added to the understanding of several critical areas, by providing both negative answers (and therefore eliminating expensive further studies of unfeasible paths) and positive feasible options for storage. Theoretical evaluation of the early hypothesis of storage on pure carbon single wall nanotubes (SWNT) has been scrutinized with the use of comprehensive computational methods (and experimental tests by the Center partners), and demonstrated that the fundamentally weak binding energy of hydrogen is not sufficiently enhanced by the SWNT curvature or even defects, which renders carbon nanotubes not practical media. More promising direction taken was towards 3-dimensional architectures of high porosity where concurrent attraction of H2 molecule to surrounding walls of nano-scale cavities can double or even triple the binding energy and therefore make hydrogen storage feasible even at ambient or somewhat lower temperatures. An efficient computational tool has been developed for the rapid capacity assessment combining (i) carbon-foam structure generation, (ii) accurate empirical force fields, with quantum corrections for the lightweight H2, and (iii) grand canonical Monte Carlo simulation. This made it possible to suggest optimal designs for carbon nanofoams, obtainable via welding techniques from SWNT or by growth on template-zeolites. As a precursor for 3D-foams, we have investigated experimentally the synthesis of VANTA (Vertically Aligned NanoTube Arrays). This can be used for producing nano-foams. On the other hand, fluorination of VANTA did not show promising increase of hydrogen sorption in several tests and may require further investigation and improvements. Another significant result of this project was in developing a fundamental understanding of the elements of hydrogen spillover mechanisms. The benefit of developed models is the ability to foresee possible directions for further improvement of the spillover mechanism.

  3. High energy density capacitors using nano-structure multilayer technology

    SciTech Connect (OSTI)

    Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

    1992-08-01T23:59:59.000Z

    Today, many pulse power and industrial applications are limited by capacitor performance. While incremental improvements are anticipated from existing capacitor technologies, significant advances are needed in energy density to enable these applications for both the military and for American economic competitiveness. We propose a program to research and develop a novel technology for making high voltage, high energy density capacitors. Nano-structure multilayer technologies developed at LLNL may well provide a breakthrough in capacitor performance. Our controlled sputtering techniques are capable of laying down extraordinarily smooth sub-micron layers of dielectric and conductor materials. With this technology, high voltage capacitors with an order of magnitude improvement in energy density may be achievable. Well-understood dielectrics and new materials will be investigated for use with this technology. Capacitors developed by nano-structure multilayer technology are inherently solid state, exhibiting extraordinary mechanical and thermal properties. The conceptual design of a Notepad capacitor is discussed to illustrate capacitor and capacitor bank design and performance with this technology. We propose a two phase R&D program to address DNA`s capacitor needs for electro-thermal propulsion and similar pulse power programs. Phase 1 will prove the concept and further our understanding of dielectric materials and design tradeoffs with multilayers. Nano-structure multilayer capacitors will be developed and characterized. As our materials research and modeling prove successful, technology insertion in our capacitor designs will improve the possibility for dramatic performance improvements. In Phase 2, we will make Notepad capacitors, construct a capacitor bank and demonstrate its performance in a meaningful pulse power application. We will work with industrial partners to design full scale manufacturing and move this technology to industry for volume production.

  4. Nano/Microfluidics for diagnosis of infectious diseases in developing countries Won Gu Lee a,b,1

    E-Print Network [OSTI]

    Demirci, Utkan

    Nano/Microfluidics for diagnosis of infectious diseases in developing countries Won Gu Lee a,b,1 history: Received 15 June 2009 Accepted 14 September 2009 Available online 30 November 2009 Keywords: Nano/Microfluidics Infectious diseases HIV/AIDS Point-of-care Diagnostics Global health Nano/Microfluidic technologies

  5. can significantly improve the performance of colour-conversion In addition to applications as efficient colour converters, nano-

    E-Print Network [OSTI]

    Pierrehumbert, Raymond

    as efficient colour converters, nano- crystals have been considered promising building blocks for colour in the regime of electrical injection by combining nano- crystals with an electrically driven InGaN quantum well of high-efficiency, electrically driven, hybrid nano- crystal/quantum-well devices. A Received 9 February

  6. NANO FOUNTAIN PROBE AIDS DEVELOPMENT OF NEW THERAPEUTICS Horacio D. Espinosa, Department of Mechanical Engineering, Northwestern University

    E-Print Network [OSTI]

    Shull, Kenneth R.

    NANO FOUNTAIN PROBE AIDS DEVELOPMENT OF NEW THERAPEUTICS Horacio D. Espinosa, Department a novel nanoscale fluid delivery probe, called the Nano Fountain Probe, which enables studies to a dispensing tip. The Nano Fountain Probe has proven capable of delivering a variety of functional materials

  7. Nano-Domain Analysis Via Massive Cluster Secondary Ion Mass Spectrometry in the Event-by-Event Mode

    E-Print Network [OSTI]

    Pinnick, Veronica Tiffany

    2011-02-22T23:59:59.000Z

    clusters useful probes to obtain molecular information from both nano-objects and nano-domains. The "event-by-event bombardment/detection mode" probes nano-objects one-at-a-time, while collecting and storing the corresponding secondary ion (SI) information...

  8. Nano-PPUF: A Memristor-based Security Primitive Jeyavijayan Rajendran, Garrett S. Rose, Ramesh Karri, and Miodrag Potkonjak

    E-Print Network [OSTI]

    Potkonjak, Miodrag

    Nano-PPUF: A Memristor-based Security Primitive Jeyavijayan Rajendran, Garrett S. Rose, Ramesh prone to modeling attacks. We propose memristor-based Public Physical Unclonable Functions (nano, and computationally intensive SPICE models as features to build the nano-PPUF. With just a few hundreds of memristors

  9. Particle-size and morphology dependence of the preferred interface orientation in LiFePO4 nano-

    E-Print Network [OSTI]

    Ceder, Gerbrand

    Particle-size and morphology dependence of the preferred interface orientation in LiFePO4 nano insights into the equilibrium properties and potential two-phase lithiation mechanisms in LiFePO4 nano, if experimentally-relevant nano-particles were to (de)lithiate under a thermodynamic two-phase mechanism

  10. Micro-and nano-environments of carbon sequestration: Multi-element STXMNEXAFS spectromicroscopy assessment of microbial carbon and

    E-Print Network [OSTI]

    Lehmann, Johannes

    Micro- and nano-environments of carbon sequestration: Multi-element STXM­NEXAFS spectromicroscopy- and nano-C sequestration environments, and conduct submicron-level investigation of the compositional chem demonstrated the existence of spatially distinct seemingly terminal micro- and nano-C repository zones, where

  11. Identification and selection rules of the spin-wave eigen-modes in a normally magnetized nano-pillar

    E-Print Network [OSTI]

    Identification and selection rules of the spin-wave eigen-modes in a normally magnetized nano nano-pillar (Permalloy-Copper-Permalloy) by means of a Magnetic Resonance Force Microscope (MRFM). We azimuthal index = 0, the RF cur- rent flowing through the nano-pillar, creating a circular RF Oersted field

  12. Impact of Nano-scale Through-Silicon Vias on the Quality of Today and Future 3D IC Designs

    E-Print Network [OSTI]

    Lim, Sung Kyu

    Impact of Nano-scale Through-Silicon Vias on the Quality of Today and Future 3D IC Designs Dae Hyun sub-micron dimensions in a few years. This downscaling of TSVs requires research on the impact of nano. In this paper, we investigate, for the first time, the impact of nano-scale TSVs on the area, wirelength, delay

  13. 4.3 CURRENT DIVERSE, GLOBALLY-ORIENTED SCIENCE AND ENGINEERING WORKFORCE 4.3.1 ALL SCOUT NANO EVENT

    E-Print Network [OSTI]

    Shull, Kenneth R.

    4.3 CURRENT DIVERSE, GLOBALLY-ORIENTED SCIENCE AND ENGINEERING WORKFORCE 4.3.1 ALL SCOUT NANO EVENT Zurich, IL, the NSEC hosted the first Boy Scout Nano Event in 2003. In 2005, the annual event with nearly 100 scouts and venturing crew members attended the event. The annual "All Scout Nano Event

  14. Effect of elasticity of wall on diffusion in nano channel

    SciTech Connect (OSTI)

    Tankeshwar, K., E-mail: tankesh@pu.ac.in [Computer Centre, Panjab University Chandigarh,- 160014 (India); Srivastava, Sunita [Department of Physics, Panjab University, Chandigarh 160014 (India)

    2014-04-24T23:59:59.000Z

    Confining walls of nano channel are taken to be elastic to study their effect on the diffusion coefficient of fluid flowing through the channel. The wall is elastic to the extent that it responses to molecular pressure exerted by fluid. The model to study diffusion is based on microscopic considerations. Results obtained for fluid confining to 20 atomic diameter width contrasted with results obtained by considering rigid and smooth wall. The effect of roughness of wall on diffusion can be compensated by the elastic property of wall.

  15. Efficiency of autonomous soft nano-machines at maximum power

    E-Print Network [OSTI]

    Udo Seifert

    2010-11-11T23:59:59.000Z

    We consider nano-sized artificial or biological machines working in steady state enforced by imposing non-equilibrium concentrations of solutes or by applying external forces, torques or electric fields. For unicyclic and strongly coupled multicyclic machines, efficiency at maximum power is not bounded by the linear response value 1/2. For strong driving, it can even approach the thermodynamic limit 1. Quite generally, such machines fall in three different classes characterized, respectively, as "strong and efficient", "strong and inefficient", and "balanced". For weakly coupled multicyclic machines, efficiency at maximum power has lost any universality even in the linear response regime.

  16. Nano powders, components and coatings by plasma technique

    DOE Patents [OSTI]

    McKechnie, Timothy N. (Brownsboro, AL); Antony, Leo V. M. (Huntsville, AL); O'Dell, Scott (Arab, AL); Power, Chris (Guntersville, AL); Tabor, Terry (Huntsville, AL)

    2009-11-10T23:59:59.000Z

    Ultra fine and nanometer powders and a method of producing same are provided, preferably refractory metal and ceramic nanopowders. When certain precursors are injected into the plasma flame in a reactor chamber, the materials are heated, melted and vaporized and the chemical reaction is induced in the vapor phase. The vapor phase is quenched rapidly to solid phase to yield the ultra pure, ultra fine and nano product. With this technique, powders have been made 20 nanometers in size in a system capable of a bulk production rate of more than 10 lbs/hr. The process is particularly applicable to tungsten, molybdenum, rhenium, tungsten carbide, molybdenum carbide and other related materials.

  17. Work Cost of Thermal Operations in Quantum and Nano Thermodynamics

    E-Print Network [OSTI]

    Joseph M. Renes

    2014-02-14T23:59:59.000Z

    Adopting a resource theory framework of thermodynamics for quantum and nano systems pioneered by Janzing et al. [Int. J. Th. Phys. 39, 2717 (2000)], we formulate the cost in useful work of transforming one resource state into another as a linear program of convex optimization. This approach is based on the characterization of thermal quasiorder given by Janzing et al. and later by Horodecki and Oppenheim [Nat. Comm. 4, 2059 (2013)]. Both characterizations are related to an extended version of majorization studied by Ruch, Schranner, and Seligman under the name mixing distance [J. Chem. Phys. 69, 386 (1978)].

  18. Fast Characterization of Moving Samples with Nano-Textured Surfaces

    E-Print Network [OSTI]

    Madsen, Morten Hannibal; Zalkovskij, Maksim; Karamehmedovi?, Mirza; Garns, Jrgen

    2015-01-01T23:59:59.000Z

    We characterize nano-textured surfaces by optical diffraction techniques using an adapted commercial light microscope with two detectors, a CCD camera and a spectrometer. The acquisition and analyzing time for the topological parameters height, width, and sidewall angle is only a few milliseconds of a grating. We demonstrate that the microscope has a resolution in the nanometer range, also in an environment with many vibrations, such as a machine floor. Furthermore, we demonstrate an easy method to find the area of interest with the integrated CCD camera.

  19. Cliff joins EMSL as NanoSIMS expert | EMSL

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsruc DocumentationP-Series to User Group and Userof aChristinaCliff joins EMSL as NanoSIMS expert

  20. Los Alamos shares Nano 50 award for directed assembly

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLas Conchas recovery challenge fund Las ConchasTrail of a martian mysteryNew mechanismNano 50

  1. Thermal conductivity of self-assembled nano-structured ZnO bulk ceramics

    SciTech Connect (OSTI)

    Zhao, Yu [Bio-Inspired Materials and Devices Laboraory (BMDL); Yan, Yongke [Bio-Inspired Materials and Devices Laboraory (BMDL); Kumar, Ashok [Bio-Inspired Materials and Devices Laboraory (BMDL); Wang, Hsin [ORNL; Porter, Wallace D [ORNL

    2012-01-01T23:59:59.000Z

    In this study, we describe the changes in thermal conductivity behavior of ZnO-Al micro- and nano-two-phase self-assembled composites with varying grain sizes. The reduction in thermal conductivity values of micro-composites was limited to {approx}15% for ZnO-4% Al. However, nano-composites exhibited large reduction, by a factor of about three, due to uniform distribution of nano-precipitates (ZnAl2O4) and large grain boundary area. Interestingly, the micro-composites revealed continuous decrease in thermal conductivity with increase in Al substitution while the nano-composites exhibited the lowest magnitudes for 2% Al concentration. Raman spectra indicated that phonon confinement in ZnO-Al nano-composites causes drastic decrease in the value of thermal conductivity.

  2. Nano-scale characterization of GaAsP/GaAs strained superlattice structure by nano-beam electron diffraction

    SciTech Connect (OSTI)

    Jin, Xiuguang [Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan); Nakahara, Hirotaka [Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan); Saitoh, Koh; Tanaka, Nobuo [EcoTopia Science Institute, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603 (Japan); Takeda, Yoshikazu [Nagoya Industrial Science Research Institute, Nagoya 464-0819 (Japan); Aichi Synchrotron Radiation Center, Aichi Science and Technology Foundation, Seto 489-0965 (Japan)

    2014-03-17T23:59:59.000Z

    Distribution of lattice strain in a GaAsP/GaAs superlattice with a periodicity of 10?nm thickness, deposited on a 100?nm GaAs basal layer has been measured by nano-beam electron diffraction. The superlattice on the (001) plane of the basal GaAs layer shows a constant lattice strain from the bottom to the top layers, whereas the superlattice on the basal GaAs surface sloped by 16 from the (001) plane shows a variation of the lattice strain and crystal orientation. The difference of the strain distributions was discussed from the viewpoint of average strain. This tilt was explained by an atomistic model.

  3. Nano-precipitation in hot-pressed silicon carbide

    SciTech Connect (OSTI)

    Zhang, Xiao Feng; Sixta, Mark E.; Chen, Da; De Jonghe, Lutgard C.

    2000-05-16T23:59:59.000Z

    Heat treatments at 1300 degrees C, 1400 degrees C, 1500 degrees C, and 1600 degrees C in Ar were found to produce nanoscale precipitates in hot-pressed silicon carbide containing aluminum, boron, and carbon sintering additives (ABC-SiC). The precipitates were studied by transmission electron microscopy (TEM) and nano-probe energy-dispersive X-ray spectroscopy (nEDS). The precipitates were plate-like in shape, with a thickness, length and separation of only a few nanometers, and their size coarsened with increasing annealing temperature, accompanied by reduced number density. The distribution of the precipitates was uniform inside the SiC grains, but depleted zones were observed in the vicinity of the SiC grain boundaries. A coherent orientation relationship between the precipitates and the SiC matrix was found. Combined high-resolution electron microscopy, computer simulation, and nEDS identified an Al4C3-based structure and composition for the nano-precipitates. Most Al ions in SiC lattice exsolved as precipitates during the annealing at 1400 to 1500 degrees C. Formation mechanism and possible influences of the nanoscale precipitates on mechanical properties are discussed.

  4. Design Optimization of Radionuclide Nano-Scale Batteries

    SciTech Connect (OSTI)

    Schoenfeld, D.W.; Tulenko, J.S.; Wang, J.; Smith, B.

    2004-10-06T23:59:59.000Z

    Radioisotopes have been used for power sources in heart pacemakers and space applications dating back to the 50's. Two key properties of radioisotope power sources are high energy density and long half-life compared to chemical batteries. The tritium battery used in heart pacemakers exceeds 500 mW-hr, and is being evaluated by the University of Florida for feasibility as a MEMS (MicroElectroMechanical Systems) power source. Conversion of radioisotope sources into electrical power within the constraints of nano-scale dimensions requires cutting-edge technologies and novel approaches. Some advances evolving in the III-V and II-IV semiconductor families have led to a broader consideration of radioisotopes rather free of radiation damage limitations. Their properties can lead to novel battery configurations designed to convert externally located emissions from a highly radioactive environment. This paper presents results for the analytical computational assisted design and modeling of semiconductor prototype nano-scale radioisotope nuclear batteries from MCNP and EGS programs. The analysis evaluated proposed designs and was used to guide the selection of appropriate geometries, material properties, and specific activities to attain power requirements for the MEMS batteries. Plans utilizing high specific activity radioisotopes were assessed in the investigation of designs employing multiple conversion cells and graded junctions with varying band gap properties. Voltage increases sought by serial combination of VOC s are proposed to overcome some of the limitations of a low power density. The power density is directly dependent on the total active areas.

  5. Specificity and Engagement: Increasing ELSI s Relevance to Nano Scientists

    SciTech Connect (OSTI)

    Shumpert, Barry L [ORNL; Wolfe, Amy K [ORNL; Bjornstad, David J [ORNL; Wang, Stephanie [ORNL; Campa Ayala, Maria F [ORNL

    2014-01-01T23:59:59.000Z

    Scholars studying the ethical, legal, and social issues (ELSI) associated with emerging technologies maintain the importance of considering these issues throughout the research and development cycle, even during the earliest stages of basic research. Embedding these considerations within the scientific process requires communication between ELSI scholars and the community of physical scientists who are conducting that basic research. We posit that this communication can be effective on a broad scale only if it links societal issues directly to characteristics of the emerging technology that are relevant to the physical and natural scientists involved in research and development. In this article, we examine nano-ELSI literature from 2003 to 2010 to discern the degree to which it makes these types of explicit connections. We find that, while the literature identifies a wide range of issues of societal concern, it generally does so in a non-specific manner. It neither links societal issues to particular forms or characteristics of widely divergent nanotechnologies nor to any of the many potential uses to which those nanotechnologies may be put. We believe that these kinds of specificity are essential to those engaged in nano-scale research. We also compare the literature-based findings to observations from interviews we conducted with nanoscientists and conclude that ELSI scholars should add technical- and application-related forms of specificity to their work and their writings to enhance effectiveness and impact in communicating with one important target audience members of the nanoscale science community.

  6. Nanomanufacturing : nano-structured materials made layer-by-layer.

    SciTech Connect (OSTI)

    Cox, James V.; Cheng, Shengfeng; Grest, Gary Stephen; Tjiptowidjojo, Kristianto (University of New Mexico); Reedy, Earl David, Jr.; Fan, Hongyou; Schunk, Peter Randall; Chandross, Michael Evan; Roberts, Scott A.

    2011-10-01T23:59:59.000Z

    Large-scale, high-throughput production of nano-structured materials (i.e. nanomanufacturing) is a strategic area in manufacturing, with markets projected to exceed $1T by 2015. Nanomanufacturing is still in its infancy; process/product developments are costly and only touch on potential opportunities enabled by growing nanoscience discoveries. The greatest promise for high-volume manufacturing lies in age-old coating and imprinting operations. For materials with tailored nm-scale structure, imprinting/embossing must be achieved at high speeds (roll-to-roll) and/or over large areas (batch operation) with feature sizes less than 100 nm. Dispersion coatings with nanoparticles can also tailor structure through self- or directed-assembly. Layering films structured with these processes have tremendous potential for efficient manufacturing of microelectronics, photovoltaics and other topical nano-structured devices. This project is designed to perform the requisite R and D to bring Sandia's technology base in computational mechanics to bear on this scale-up problem. Project focus is enforced by addressing a promising imprinting process currently being commercialized.

  7. Two-stage epitaxial growth of vertically-aligned SnO2 nano-rods on(001) ceria

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

    Solovyov, Vyacheslav F. [Brookhaven National Lab. (BNL), Upton, NY (United States); Wu, Li-jun [Brookhaven National Lab. (BNL), Upton, NY (United States); Rupich, Martin W. [American Superconductor, Devens, MA (United States); Sathyamurthy, Srivatsan [American Superconductor, Devens, MA (United States); Li, Xiaoping [American Superconductor, Devens, MA (United States); Li, Qiang [Brookhaven National Lab. (BNL), Upton, NY (United States)

    2014-12-01T23:59:59.000Z

    Growth of high-aspect ratio oriented tin oxide, SnO2, nano-rods is complicated by a limited choice of matching substrates. We show that a (001) cerium oxide, CeO2, surface uniquely enables epitaxial growth of tin-oxide nano-rods via a two-stage process. First, (100) oriented nano-wires coat the ceria surface by lateral growth, forming a uniaxially-textured SnO2 deposit. Second, vertical SnO2nano-rods nucleate on the deposit by homoepitaxy. We demonstrate growth of vertically oriented 1-2 ?m long nano-rods with an average diameter of ?20 nm.

  8. hal-00111982,version2-9May2007 Effect of measurement probes upon the conductance of an interacting nano-system

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    nano-system: Detection of an attached ring by non local many body effects Axel Freyn and Jean-sur-Yvette Cedex, France We consider a nano-system connected to measurement probes via leads. When a magnetic flux is varied through a ring attached to one lead at a distance Lc from the nano-system, the effective nano

  9. Remote optical sensing on the nanometer scale with a bowtie aperture nano-antenna on a SNOM fiber tip

    E-Print Network [OSTI]

    Atie, Elie M; Eter, Ali El; Salut, Roland; Nedeljkovic, Dusan; Tannous, Tony; Baida, Fadi I; Grosjean, Thierry

    2015-01-01T23:59:59.000Z

    Plasmonic nano-antennas have proven the outstanding ability of sensing chemical and physical processes down to the nano-meter scale. Sensing is usually achieved within the highly confined optical fields generated resonantly by the nano-antennas, i.e. in contact to the nano-structures. In these paper, We demonstrate the sensing capability of nano-antennas to their larger scale environment, well beyond their plasmonic confinement volume, leading to the concept of 'remote' (non contact) sensing on the nano-meter scale. On the basis of a bowtie-aperture nano-antenna (BNA) integrated at the apex of a SNOM fiber tip, we introduce an ultra-compact, move-able and background-free optical nano-sensor for the remote sensing of a silicon surface (up to distance of 300 nm). Sensitivity of the BNA to its large scale environment is high enough to expect the monitoring and control of the spacing between the nano-antenna and a silicon surface with sub-nano-meter accuracy. This work paves the way towards a new class of nano-po...

  10. Dilution-Free Analysis from Picoliter Droplets by Nano-Electrospray Ionization Mass Spectrometry

    SciTech Connect (OSTI)

    Kelly, Ryan T.; Page, Jason S.; Marginean, Ioan; Tang, Keqi; Smith, Richard D.

    2009-09-01T23:59:59.000Z

    The expanding role of microfluidics for chemical and biochemical analysis is due to factors including the favorable scaling of separation performance with reduced channel dimensions,[1] flexibility afforded by computer-aided device design, and the ability to integrate multiple sample handling and analysis steps into a single platform.[2] Such devices enable smaller liquid volumes and sample sizes to be handled than can be achieved on the benchtop, where sub-microliter volumes are difficult to work with and where sample losses to the surfaces of multiple reaction vessels become prohibitive. A particularly attractive microfluidic platform for sample-limited analyses employs aqueous droplets or plugs encapsulated by an immiscible oil.[3,4] Each droplet serves as a discrete compartment or reaction chamber enabling, e.g., high throughput screening[5,6] and kinetic studies[7-9] of femto- to nanoliter samples, as well as the encapsulation[10-12] and lysis[10] of individual cells with limited dilution of the cellular contents

  11. Size-dependent mobility of gold nano-clusters during growth on chemically modified graphene

    SciTech Connect (OSTI)

    Bell, Gavin R., E-mail: gavin.bell@warwick.ac.uk; Dawson, Peter M.; Pandey, Priyanka A.; Wilson, Neil R. [Department of Physics, University of Warwick, Coventry CV4 7AL (United Kingdom); Mulheran, Paul A. [Department of Chemical and Process Engineering, University of Strathclyde, James Weir Building, 75 Montrose St., Glasgow G1 1XJ (United Kingdom)

    2014-01-01T23:59:59.000Z

    Gold nano-clusters were grown on chemically modified graphene by direct sputter deposition. Transmission electron microscopy of the nano-clusters on these electron-transparent substrates reveals an unusual bimodal island size distribution (ISD). A kinetic Monte Carlo model of growth incorporating a size-dependent cluster mobility rule uniquely reproduces the bimodal ISD, providing strong evidence for the mobility of large clusters during surface growth. The cluster mobility exponent of ?5/3 is consistent with cluster motion via one-dimensional diffusion of gold atoms around the edges of the nano-clusters.

  12. Wetting kinetics of water nano-droplet containing non-surfactant nanoparticles: A molecular dynamics study

    SciTech Connect (OSTI)

    Lu, Gui [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China) [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China); Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States); Hu, Han; Sun, Ying, E-mail: yyduan@tsinghua.edu.cn, E-mail: ysun@coe.drexel.edu [Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States)] [Department of Mechanical Engineering and Mechanics, Drexel University, Philadelphia, Pennsylvania 19104 (United States); Duan, Yuanyuan, E-mail: yyduan@tsinghua.edu.cn, E-mail: ysun@coe.drexel.edu [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China)] [Key Laboratory for Thermal Science and Power Engineering of MOE, Beijing Key Laboratory for CO2 Utilization and Reduction Technology, Tsinghua University, Beijing 100084 (China)

    2013-12-16T23:59:59.000Z

    In this Letter, dynamic wetting of water nano-droplets containing non-surfactant gold nanoparticles on a gold substrate is examined via molecular dynamics simulations. The results show that the addition of non-surfactant nanoparticles hinders the nano-second droplet wetting process, attributed to the increases in both surface tension of the nanofluid and friction between nanofluid and substrate. The droplet wetting kinetics decreases with increasing nanoparticle loading and water-particle interaction energy. The observed wetting suppression and the absence of nanoparticle ordering near the contact line of nano-sized droplets differ from the wetting behaviors reported from nanofluid droplets of micron size or larger.

  13. Nano-Bio-Genesis: Tracing the rise of nanotechnology and nanobiotechnology as 'big science'

    E-Print Network [OSTI]

    Kulkarni, Rajan P

    2007-07-14T23:59:59.000Z

    ral Journal of Biomedical Discovery and ssBioMed CentCollaboration Open AcceCase Study Nano-Bio-Genesis: tracing the rise of nanotechnology and nanobiotechnology as 'big science' Rajan P Kulkarni* Address: Centre for Economics & Policy, Institute... of dollars potentially avail- able for nano research specifically directed towards the life sciences. One of the first NIH-related agencies to devise such a nano-biological framework was the NCI. Cancer has been a specially designated research topic for over...

  14. High performance capacitors using nano-structure multilayer materials fabrication

    DOE Patents [OSTI]

    Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

    1995-05-09T23:59:59.000Z

    A high performance capacitor is fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a ``notepad`` configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The notepad capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density. 5 figs.

  15. High performance capacitors using nano-structure multilayer materials fabrication

    DOE Patents [OSTI]

    Barbee, Jr., Troy W. (Palo Alto, CA); Johnson, Gary W. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

    1995-01-01T23:59:59.000Z

    A high performance capacitor fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a "notepad" configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The "notepad" capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density.

  16. High performance capacitors using nano-structure multilayer materials fabrication

    DOE Patents [OSTI]

    Barbee, T.W. Jr.; Johnson, G.W.; O`Brien, D.W.

    1996-01-23T23:59:59.000Z

    A high performance capacitor is described which is fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a ``notepad`` configuration composed of 200--300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The ``notepad`` capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density. 5 figs.

  17. High performance capacitors using nano-structure multilayer materials fabrication

    DOE Patents [OSTI]

    Barbee, Jr., Troy W. (Palo Alto, CA); Johnson, Gary W. (Livermore, CA); O'Brien, Dennis W. (Livermore, CA)

    1996-01-01T23:59:59.000Z

    A high performance capacitor fabricated from nano-structure multilayer materials, such as by controlled, reactive sputtering, and having very high energy-density, high specific energy and high voltage breakdown. The multilayer capacitors, for example, may be fabricated in a "notepad" configuration composed of 200-300 alternating layers of conductive and dielectric materials so as to have a thickness of 1 mm, width of 200 mm, and length of 300 mm, with terminals at each end of the layers suitable for brazing, thereby guaranteeing low contact resistance and high durability. The "notepad" capacitors may be stacked in single or multiple rows (series-parallel banks) to increase the voltage and energy density.

  18. Photonic nano-structures on (111)-oriented diamond

    SciTech Connect (OSTI)

    Neu, Elke; Appel, Patrick; Ganzhorn, Marc; Miguel-Snchez, Javier; Maletinsky, Patrick, E-mail: patrick.maletinsky@unibas.ch [Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel (Switzerland); Lesik, Margarita; Jacques, Vincent [Laboratoire Aim Cotton, CNRS, Universit Paris-Sud and Ecole Normale Suprieure de Cachan, F-91405 Orsay (France); Mille, Vianney; Tallaire, Alexandre; Achard, Jocelyn [Universit Paris 13, Sorbonne Paris Cit, Laboratoire des Sciences des Procds et des Matriaux (CNRS UPR 3407), F-93430 Villetaneuse (France)

    2014-04-14T23:59:59.000Z

    We demonstrate the fabrication of single-crystalline diamond nanopillars on a (111)-oriented chemical vapor deposited diamond substrate. This crystal orientation offers optimal coupling of nitrogen-vacancy (NV) center emission to the nanopillar mode and is thus advantageous over previous approaches. We characterize single native NV centers in these nanopillars and find one of the highest reported saturated fluorescence count rates in single crystalline diamond in excess of 10{sup 6} counts per second. We show that our nano-fabrication procedure conserves the preferential alignment as well as the spin coherence of the NVs in our structures. Our results will enable a new generation of highly sensitive probes for NV magnetometry and pave the way toward photonic crystals with optimal orientation of the NV center's emission dipole.

  19. Heirarchical Self Assembly: Self Organized nano-structures in a nematically ordered matrix of self assembled polymeric chains

    E-Print Network [OSTI]

    Shaikh Mubeena; Apratim Chatterji

    2014-12-04T23:59:59.000Z

    We report many different nano-structures which are formed when model nano-particles of different sizes (diameter {\\sigma} n ) are allowed to aggregate in a background matrix of semi-flexible self assembled polymeric worm like micellar chains. The different nano-structures are formed by the dynamical arrest of phase-separating mixtures of micellar monomers and nano-particles. The different mor- phologies obtained are the result of an interplay of the available free volume, the elastic energy of deformation of polymers, the density (chemical potential) of the nano-particles in the polymer ma- trix and, of course, the ratio of the size of self assembling nano-particles and self avoidance diameter of polymeric chains. We have used a hybrid semi-grand canonical Monte Carlo simulation scheme to obtain the (non-equilibrium) phase diagram of the self-assembled nano-structures. We observe rod-like structures of nano-particles which get self assembled in the gaps between the nematically ordered chains as well as percolating gel-like network of conjoined nanotubes. We also find a totally unexpected interlocked crystalline phase of nano-particles and monomers, in which each crytal plane of nanoparticles is separated by planes of perfectly organized polymer chains. We identified the con- dition which leads to such interlocked crystal structure. We suggest experimental possibilities of how the results presented in this paper could be used to obtain different nano-structures in the lab.

  20. Radial arrays of nano-electrospray ionization emitters and methods of forming electrosprays

    DOE Patents [OSTI]

    Kelly, Ryan T [West Richland, WA; Tang, Keqi [Richland, WA; Smith, Richard D [Richland, WA

    2010-10-19T23:59:59.000Z

    Electrospray ionization emitter arrays, as well as methods for forming electrosprays, are described. The arrays are characterized by a radial configuration of three or more nano-electrospray ionization emitters without an extractor electrode. The methods are characterized by distributing fluid flow of the liquid sample among three or more nano-electrospray ionization emitters, forming an electrospray at outlets of the emitters without utilizing an extractor electrode, and directing the electrosprays into an entrance to a mass spectrometry device. Each of the nano-electrospray ionization emitters can have a discrete channel for fluid flow. The nano-electrospray ionization emitters are circularly arranged such that each is shielded substantially equally from an electrospray-inducing electric field.

  1. Design and characterization of a nano-Newton resolution thrust stand J. Soni and S. Roy

    E-Print Network [OSTI]

    Roy, Subrata

    Design and characterization of a nano-Newton resolution thrust stand J. Soni and S. Roy Citation-Newton resolution thrust stand J. Soni and S. Roya) Applied Physics Research Group, University of Florida

  2. Phase transformations of nano-sized cubic boron nitride to white graphene and white graphite

    SciTech Connect (OSTI)

    Dang, Hongli; Liu, Yingdi; Xue, Wenhua; Anderson, Ryan S.; Sewell, Cody R. [Department of Physics and Engineering Physics, The University of Tulsa, Tulsa, Oklahoma 74104 (United States); Xue, Sha; Crunkleton, Daniel W. [Department of Chemical Engineering, The University of Tulsa, Tulsa, Oklahoma 74104 (United States); Institute of Alternate Energy, The University of Tulsa, Tulsa, Oklahoma 74104 (United States); Shen, Yaogen [Department of Mechanical and Biomedical Engineering, City University of Hong Kong, Kowloon (Hong Kong); Wang, Sanwu, E-mail: sanwu-wang@utulsa.edu [Department of Physics and Engineering Physics, The University of Tulsa, Tulsa, Oklahoma 74104 (United States); Institute of Alternate Energy, The University of Tulsa, Tulsa, Oklahoma 74104 (United States)

    2014-03-03T23:59:59.000Z

    We report quantum-mechanical investigations that predict the formation of white graphene and nano-sized white graphite from the first-order phase transformations of nano-sized boron nitride thin-films. The phase transformations from the nano-sized diamond-like structure, when the thickness d?>?1.4?nm, to the energetically more stable nano-sized white graphite involve low activation energies of less than 1.0?eV. On the other hand, the diamond-like structure transforms spontaneously to white graphite when d???1.4?nm. In particular, the two-dimensional structure with single-layer boron nitride, the so-called white graphene, could be formed as a result of such transformation.

  3. Abundances of presolar silicon carbide grains in primitive meteorites determined by NanoSIMS

    E-Print Network [OSTI]

    Nittler, Larry R.

    Abundances of presolar silicon carbide grains in primitive meteorites determined by NanoSIMS Jemma carbide (SiC) grains estimated from their noble gas components show significant variations in even

  4. NANO EXPRESS A Study on Field Emission Characteristics of Planar Graphene

    E-Print Network [OSTI]

    Yang, Eui-Hyeok

    NANO EXPRESS A Study on Field Emission Characteristics of Planar Graphene Layers Obtained from on field emission characteristics of individual graphene layers for vacuum nanoelectronics. Graphene layers enabled electric con- nection with the graphene layers without postfabrication. The maximum emitted

  5. SYNTHESIS, CHARACTERIZATION AND CATALYTIC STUDIES OF CARBON-BASED NANO MATERIALS.

    E-Print Network [OSTI]

    Yan, Qiangu

    2011-01-01T23:59:59.000Z

    ?? Nano-scaled carbons were produced by thermal treatment of pine wood chips and bio-char. The influence of temperature, heating rate, pyrolysis time, and type and (more)

  6. Mid-Infrared Single-Photon Detection Using Superconducting Nanowires Integrated with Nano-Antennae

    E-Print Network [OSTI]

    Berggren, Karl K.

    We present some major challenges of mid-infrared superconducting nanowire single-photon detector technology and our device design with nano-antenna integration to address these challenges.

  7. Nano Today (2013) 8, 290--312 Available online at www.sciencedirect.com

    E-Print Network [OSTI]

    Cheng, Jianjun

    Nano Today (2013) 8, 290--312 Available online at www.sciencedirect.com journal homepage: www NPs, iron oxide NPs, carbon nanotubes and other inorganic NPs with hollow or porous structures, have

  8. Nano-High: Lawrence Berkeley National Laboratory Lecture on the "compassionate instinct"

    Broader source: Energy.gov [DOE]

    Nano-High, a program of the Lawrence Berkeley National Laboratory, is a series of free Saturday morning talks by internationally recognized leaders in scientific research. The talks are designed...

  9. Ultra-efficient, Robust and Well-defined Nano-Array based Monolithic...

    Broader source: Energy.gov (indexed) [DOE]

    Ultra-efficient, Robust and Well-defined Nano-Array based Monolithic Catalysts Yanbing Guo, Zheng Ren, and Pu-Xian Gao Department of Chemical, Materials and Biomolecular...

  10. Charge-Transfer Induced Magnetic Field Effects of Nano-Carbon Heterojunctions

    E-Print Network [OSTI]

    Qin, Wei; Gong, Maogang; Shastry, Tejas; Hersam, Mark C.; Ren, Shenqiang

    2014-08-22T23:59:59.000Z

    positive and negative polarons. Here, we demonstrate charge-transfer induced magnetic field effects in nano-carbon C60-SWCNT bulk heterojunctions at room temperature, where the mechanism of magnetic field effects is verified using excited state transition...

  11. Nano-High: Lawrence Berkeley National Laboratory Lecture on Good Sugars

    Broader source: Energy.gov [DOE]

    Nano-High, a program of the Lawrence Berkeley National Laboratory, is a series of free Saturday morning talks by internationally recognized leaders in scientific research. The talks are designed...

  12. Energy issues for construction of electrostatic nano-traps in saline

    E-Print Network [OSTI]

    Jingkun Guo; Zijin Lei; Shengyong Xu

    2015-01-09T23:59:59.000Z

    To trap and manipulate nano-sized particles with electrostatic force is an interesting issue for nanoscience and bioscience, yet remains as a technical challenge to date. We present here numerical calculations for the feasibility of trapping a nano-particle with another nano-sized structure in an ionic fluid. The roles of electrostatic energy, entropy and free energy in interplays of these systems have been calculated. We find that in some cases the entropic term contributes more to the total amount of free energy than the electrostatic energy does. We have also discussed the probability for aggregation of two nano-subjects with similar structure but different charge distributions. Although the structures and charge distributions are artificially assumed, the result should be valid for general cases; it provides guiding clues for construction of nanoscale electrostatic tweezers, and may help for a better understand of the interplays among a variety of bio-macromolecules.

  13. Nano-High: Lawrence Berkeley National Laboratory Lecture on Bad Sugars

    Broader source: Energy.gov [DOE]

    Nano-High, a program of the Lawrence Berkeley National Laboratory, is a series of free Saturday morning talks by internationally recognized leaders in scientific research. The talks are designed...

  14. Electronic Structure of CrN: from Macro to Nano | Argonne National...

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

    Electronic Structure of CrN: from Macro to Nano January 28, 2015 11:00AM to 12:00PM Presenter Antia Sanchez Botana, University of California, Davis Location Building 223, Room S105...

  15. Studies on Nano-Indentation of Polymeric Thin Films Using Finite Element Methods

    E-Print Network [OSTI]

    Shen, Xiaojun

    In this paper, the numerical simulation for nano-indentation is performed to measure time-dependent behavior of polymeric films. The possibility to extract the relaxed shear modulus of the polymer is evaluated using a rigid ...

  16. Scanning tunneling microscopic studies of SiO2 thin film supported metal nano-clusters

    E-Print Network [OSTI]

    Min, Byoung Koun

    2005-11-01T23:59:59.000Z

    This dissertation is focused on understanding heterogeneous metal catalysts supported on oxides using a model catalyst system of SiO2 thin film supported metal nano-clusters. The primary technique applied to this study is scanning tunneling...

  17. Direct and quantitative broadband absorptance micro/nano spectroscopy using FTIR and bilayer cantilever probes

    E-Print Network [OSTI]

    Hsu, Wei-Chun

    2012-01-01T23:59:59.000Z

    Optical properties of micro/nano materials are important for many applications in biology, optoelectronics, and energy. In this thesis, a method is described to directly measure the quantitative absorptance spectra of ...

  18. Transport modeling of simple fluids and nano-colloids : thermal conduction mechanisms and coarse projection

    E-Print Network [OSTI]

    Eapen, Jacob, 1968-

    2006-01-01T23:59:59.000Z

    In the first part of this thesis, the modes of microscopic energy fluctuations governing heat flow in nano-colloids are quantitatively assessed by combining linear response theory with molecular dynamics (MD) simulations. ...

  19. Hybrid Nano Carbon Fiber/Graphene Platelet-Based High-Capacity...

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

    D.C. es009jang2010o.pdf More Documents & Publications Hybrid Nano Carbon FiberGraphene Platelet-Based High-Capacity Anodes for Lithium Ion Batteries 2010 DOE EERE Vehicle...

  20. Hybrid Nano Carbon Fiber/Graphene Platelet-Based High-Capacity...

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

    es009jang2011o.pdf More Documents & Publications Hybrid Nano Carbon FiberGraphene Platelet-Based High-Capacity Anodes for Lithium Ion Batteries Progress of DOE...

  1. Design and characterization of Hover Nano Aerial Vehicle (HNAV) propulsion system

    E-Print Network [OSTI]

    Sato, Sho, Ph. D. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    On October 4th 2005, DARPA released a request for proposals for a Nano-Air Vehicle (NAV) program. The program sought to develop an advanced urban reconnaissance vehicle. According the requirement imposed by DARPA, the NAV ...

  2. Design and fabrication of micro- and nano- dielectric structures for imaging and focusing at optical frequencies

    E-Print Network [OSTI]

    Takahashi, Satoshi, Ph. D. Massachusetts Institute of Technology

    2011-01-01T23:59:59.000Z

    In this thesis work, design and fabrication of micro- and nano-photonic structures both in the diffraction regime and sub-wavelength regime have been investigated. In the diffraction regime, two types of optical systems ...

  3. Nano-/micro metallic wire synthesis on Si substrate and their characterization

    SciTech Connect (OSTI)

    Kaur, Jaskiran, E-mail: kaur.jaskiran@gmail.com; Kaur, Harmanmeet, E-mail: kaur.jaskiran@gmail.com; Singh, Surinder, E-mail: kaur.jaskiran@gmail.com [Department of Physics, Guru Nanak Dev University, Amritsar-143005 (India); Kanjilal, Dinakar [Inter-University Accelerator Centre, New Delhi-110067 (India); Chakarvarti, Shiv Kumar [Manav Rachna International University, Faridabad-121003 (India)

    2014-04-24T23:59:59.000Z

    Nano-/micro wires of copper are grown on semiconducting Si substrate using the template method. It involves the irradiation of 8 um thick polymeric layer coated on Si with150 MeV Ni ion beam at a fluence of 2E8. Later, by using the simple technique of electrodeposition, copper nano-/micro wires were grown via template synthesis. Synthesized wires were morphologically characterized using SEM and electrical characterization was carried out by finding I-V plot.

  4. Micromagnetic study of auto-oscillation modes in spin-Hall nano-oscillators

    SciTech Connect (OSTI)

    Ulrichs, H., E-mail: henning.ulrichs@uni-muenster.de; Demidov, V. E.; Demokritov, S. O. [Department of Physics and Center for Nonlinear Science, University of Mnster, Corrensstrae 2-4, 48149 Mnster (Germany)

    2014-01-27T23:59:59.000Z

    We present a numerical study of magnetization dynamics in a recently introduced spin torque nano-oscillator, whose operational principle relies on the spin-Hall effectspin-Hall nano-oscillators. Our numerical results show good agreement with the experimentally observed behaviors and provide detailed information about the features of the primary auto-oscillation mode observed in the experiments. They also clarify the physical nature of the secondary auto-oscillation mode, which was experimentally observed under certain conditions only.

  5. Nano-Continuum Modeling of a Nuclear Glass Specimen Altered for 25 Years

    SciTech Connect (OSTI)

    Steefel, Carl

    2014-01-06T23:59:59.000Z

    The purpose of this contribution is to report on preliminary nano-continuum scale modeling of nuclear waste glass corrosion. The focus of the modeling is an experiment involving a French glass SON68 specimen leached for 25 years in a granitic environment. In this report, we focus on capturing the nano-scale concentration profiles. We use a high resolution continuum model with a constant grid spacing of 1 nanometer to investigate the glass corrosion mechanisms.

  6. Effective potentials between gold nano crystals -- functional dependence on the temperature

    E-Print Network [OSTI]

    G. Bauer; A. Lange; N. Gribova; C. Holm; J. Gro

    2014-03-24T23:59:59.000Z

    A method is presented that allows to combine the effective potential between two nano crystals, the potential of mean force (PMF), as obtained from all-atomistic Molecular Dynamics simulations with perturbation theory. In this way, a functional dependence of the PMF on temperature is derived, that enables the prediction of the PMF in a wide temperature range. We applied the method for systems of capped gold nano crystals of different size. They show very good agreement with data from atomistic simulations.

  7. Novel Laser-Based Manufacturing of nano-LiFePO4-Based Materials for High Power Li Ion Batteries

    E-Print Network [OSTI]

    Horne, Craig R.; Jaiswal, Abhishek; Chang, On; Crane, S.; Doeff, Marca M.; Wang, Emile

    2006-01-01T23:59:59.000Z

    NanoParticle Manufacturing (NPM), has been used tomaterials synthesized by the NPM process (branded as nPWR)phosphoric acid into an NPM reactor. The powder collected

  8. r XXXX American Chemical Society A dx.doi.org/10.1021/nl201470j |Nano Lett. XXXX, XXX, 000000 pubs.acs.org/NanoLett

    E-Print Network [OSTI]

    Cui, Yi

    ­000 LETTER pubs.acs.org/NanoLett Interconnected Silicon Hollow Nanospheres for Lithium-Ion Battery Anodes silicon structure.13 This electrochem- ical conditioning method is promising, but limited capacities (960 the diffusion-induced stress evolution and investigated the volume expansion of the same single hollow spheres

  9. Photocatalytic studies of HoZrO nano-composite with controllable composition and defects

    SciTech Connect (OSTI)

    Du, Weimin, E-mail: duweimin75@gmail.com [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000 (China); Zhao, Guoyan; Chang, Hongxun; Shi, Fei; Zhu, Zhaoqiang [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455000 (China); Qian, Xuefeng [School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240 (China)

    2013-09-15T23:59:59.000Z

    With the help of solgel method assisted by melting salt, a series of HoZrO nano-composite with controllable composition and defects have been successfully prepared. Characterization results show that the positions, intensity, and width of the X-ray diffraction peaks of the products have a regular variation with the increase of zirconium element which implies the gradual changes of crystal spacing and product size. At the same time, the molar ratios between holmium and zirconium ions are consistent with the chemical formula and both of them are uniformly distributed in products further showing the perfect formation of targeted materials. Optical properties reveal that diversified defect forms of HoZrO nano-composite lead to the different absorptions of visible light. Photocatalytic experiments demonstrate Zr{sub 0.8}Ho{sub 0.2}O{sub 2??} nano-crystals have excellent visible-light-responsive photocatalytic activities on some familiar dyes (e.g.: methylene blue and Rhodamine B) which results from the special defect structure, better absorption of visible light and larger specific surface area. It follows that Zr{sub 0.8}Ho{sub 0.2}O{sub 2??} nano-crystals are a new kind of visible-light-responsive photocatalysts with better prospects in conversion and utilization of solar energy. Also, the present melting salt assisted route might be generalized to synthesize other AxByOz composite oxide nano-crystals with more complicated structures. - Highlights: HoZrO nano-composite with controllable composition and defects has been obtained. Diversified defect forms of products lead to the different visible light absorption. Zr{sub 0.8}Ho{sub 0.2}O{sub 2??} nano-crystals have excellent photocatalytic activities.

  10. Protection of cisplatin-induced spermatotoxicity, DNA damage and chromatin abnormality by selenium nano-particles

    SciTech Connect (OSTI)

    Rezvanfar, Mohammad Amin; Rezvanfar, Mohammad Ali [Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), Tehran (Iran, Islamic Republic of)] [Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), Tehran (Iran, Islamic Republic of); Shahverdi, Ahmad Reza [Department of Pharmaceutical Biotechnology and Biotechnology Research Centre, Faculty of Pharmacy, TUMS, Tehran (Iran, Islamic Republic of)] [Department of Pharmaceutical Biotechnology and Biotechnology Research Centre, Faculty of Pharmacy, TUMS, Tehran (Iran, Islamic Republic of); Ahmadi, Abbas [Department of Histology and Embryology, Faculty of Veterinary Medicine, Urmia University, Urmia (Iran, Islamic Republic of)] [Department of Histology and Embryology, Faculty of Veterinary Medicine, Urmia University, Urmia (Iran, Islamic Republic of); Baeeri, Maryam; Mohammadirad, Azadeh [Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), Tehran (Iran, Islamic Republic of)] [Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), Tehran (Iran, Islamic Republic of); Abdollahi, Mohammad, E-mail: mohammad.abdollahi@utoronto.ca [Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), Tehran (Iran, Islamic Republic of)] [Department of Toxicology and Pharmacology, Faculty of Pharmacy, and Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences (TUMS), Tehran (Iran, Islamic Republic of)

    2013-02-01T23:59:59.000Z

    Cisplatin (CIS), an anticancer alkylating agent, induces DNA adducts and effectively cross links the DNA strands and so affects spermatozoa as a male reproductive toxicant. The present study investigated the cellular/biochemical mechanisms underlying possible protective effect of selenium nano-particles (Nano-Se) as an established strong antioxidant with more bioavailability and less toxicity, on reproductive toxicity of CIS by assessment of sperm characteristics, sperm DNA integrity, chromatin quality and spermatogenic disorders. To determine the role of oxidative stress (OS) in the pathogenesis of CIS gonadotoxicity, the level of lipid peroxidation (LPO), antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT) and glutathione peroxidase (GSH-Px) and peroxynitrite (ONOO) as a marker of nitrosative stress (NS) and testosterone (T) concentration as a biomarker of testicular function were measured in the blood and testes. Thirty-two male Wistar rats were equally divided into four groups. A single IP dose of CIS (7 mg/kg) and protective dose of Nano-Se (2 mg/kg/day) were administered alone or in combination. The CIS-exposed rats showed a significant increase in testicular and serum LPO and ONOO level, along with a significant decrease in enzymatic antioxidants levels, diminished serum T concentration and abnormal histologic findings with impaired sperm quality associated with increased DNA damage and decreased chromatin quality. Coadministration of Nano-Se significantly improved the serum T, sperm quality, and spermatogenesis and reduced CIS-induced free radical toxic stress and spermatic DNA damage. In conclusion, the current study demonstrated that Nano-Se may be useful to prevent CIS-induced gonadotoxicity through its antioxidant potential. Highlights: ? Cisplatin (CIS) affects spermatozoa as a male reproductive toxicant. ? Effect of Nano-Se on CIS-induced spermatotoxicity was investigated. ? CIS-exposure induces oxidative sperm DNA damage and impairs steroidogenesis. ? Nano-Se retained sperm quality against CIS-induced free radicals toxic stress.

  11. Confinement dynamics of a semiflexible chain inside nano-spheres

    E-Print Network [OSTI]

    Arman Fathizadeh; Maziar Heidari; Behrouz Eslami-Mossallam; Mohammad Reza Ejtehadi

    2014-09-26T23:59:59.000Z

    We study the conformations of a semiflexible chain, confined in nano-scaled spherical cavities, under two distinct processes of confinement. Radial contraction and packaging are employed as two confining procedures. The former method is performed by gradually decreasing the diameter of a spherical shell which envelopes a confined chain. The latter procedure is carried out by injecting the chain inside a spherical shell through a hole on the shell surface. The chain is modeled with a rigid body molecular dynamics simulation and its parameters are adjusted to DNA base-pair elasticity. Directional order parameter is employed to analyze and compare the confined chain and the conformations of the chain for two different sizes of the spheres are studied in both procedures. It is shown that for the confined chains in the sphere sizes of our study, they appear in spiral or tennis-ball structures, and the tennis-ball structure is more likely to be observed in more compact confinements. Our results also show that the dynamical procedure of confinement and the rate of the confinement are influential parameters of the structure of the chain inside spherical cavities.

  12. Bioforensics: Characterization of biological weapons agents by NanoSIMS

    SciTech Connect (OSTI)

    Weber, P K; Ghosal, S; Leighton, T J; Wheeler, K E; Hutcheon, I D

    2007-02-26T23:59:59.000Z

    The anthrax attacks of Fall 2001 highlight the need to develop forensic methods based on multiple identifiers to determine the origin of biological weapons agents. Genetic typing methods (i.e., DNA and RNA-based) provide one attribution technology, but genetic information alone is not usually sufficient to determine the provenance of the material. Non-genetic identifiers, including elemental and isotopic signatures, provide complementary information that can be used to identify the means, geographic location and date of production. Under LDRD funding, we have successfully developed the techniques necessary to perform bioforensic characterization with the NanoSIMS at the individual spore level. We have developed methods for elemental and isotopic characterization at the single spore scale. We have developed methods for analyzing spore sections to map elemental abundance within spores. We have developed rapid focused ion beam (FIB) sectioning techniques for spores to preserve elemental and structural integrity. And we have developed a high-resolution depth profiling method to characterize the elemental distribution in individual spores without sectioning. We used these newly developed methods to study the controls on elemental abundances in spores, characterize the elemental distribution of in spores, and to study elemental uptake by spores. Our work under this LDRD project attracted FBI and DHS funding for applied purposes.

  13. Preparation and photocatalytic properties of AgISnO{sub 2} nano-composites

    SciTech Connect (OSTI)

    Wen, Biao; Wang, Xiao-Hui; Lu, Juan; Cao, Jia-Lei [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215021 (China); Wang, Zuo-Shan, E-mail: zuoshanwang@suda.edu.cn [College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215021 (China); State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081 (China)

    2013-05-15T23:59:59.000Z

    Highlights: ? AgISnO{sub 2} nano-composites have been successfully synthesized. ? As-prepared AgISnO{sub 2} nano-composites own the excellent visible light photocatalytic activity. ? As-prepared AgISnO{sub 2} nano-composites own the excellent stability. - Abstract: AgI doped SnO{sub 2} nano-composites were prepared by the chemical coprecipitation method and were characterized by the X-ray diffraction, transmission electron microscopy and X-ray photoelectron spectroscopy. Results showed that main of the I{sup ?} ions remained in the AgI lattice which is highly dispersed in the system. The photo-catalytic experiments performed under visible light irradiation using methylene blue as the pollutant revealed that not only the photo-catalytic activity but also the stability of SnO{sub 2} based photocatalyst could be improved by introduction of an appropriate amount of AgI, and the result was further supported by the UVVis diffuse reflection spectra and the electron spin-resonance spectra. Among all of the samples, AgISnO{sub 2} nano-composite with 2At% AgI exhibited the best catalytic efficiency and stability.

  14. Published: March 16, 2011 r 2011 American Chemical Society 1603 dx.doi.org/10.1021/nl104514m |Nano Lett. 2011, 11, 16031608

    E-Print Network [OSTI]

    Wang, Zhong L.

    Published: March 16, 2011 r 2011 American Chemical Society 1603 dx.doi.org/10.1021/nl104514m |Nano Lett. 2011, 11, 1603­1608 LETTER pubs.acs.org/NanoLett Light Propagation in Curved Silver Nanowire

  15. 20.2 / F. S. Y. Yeung 20.2: New Results on Nano-Textured Surfaces Alignment Layers

    E-Print Network [OSTI]

    and Technology, Clear Water Bay, Hong Kong, China Abstract In this paper, new results on nano-textured surfaces and 900 . The measured anchoring energy is very strong and is comparable to ordinary rubbed polyimide) image of the nano-structure surfaces. The dark regions are the V domains while the lighter regions

  16. Hollow silica and silica-boron nano/microparticles for contrast-enhanced ultrasound to detect small tumors

    E-Print Network [OSTI]

    Kummel, Andrew C.

    Hollow silica and silica-boron nano/microparticles for contrast-enhanced ultrasound to detect small Accepted 18 March 2012 Available online 11 April 2012 Keywords: Ultrasound Nano Silica Shells Imaging detection, gas filled hollow boron-doped silica particles have been developed, which can be used

  17. Subscriber access provided by BOSTON UNIV ACS Nano is published by the American Chemical Society. 1155 Sixteenth Street

    E-Print Network [OSTI]

    Subscriber access provided by BOSTON UNIV ACS Nano is published by the American Chemical Society Alivisatos ACS Nano, 2008, 2 (7), 1452-1458· DOI: 10.1021/nn800270m · Publication Date (Web): 22 July 2008 at Berkeley, Berkeley, California 94720 S ince the first report in 2004,1 the for- mation of hollow

  18. Subscriber access provided by MICHIGAN STATE UNIVERSITY | MSU LIBRARIES Nano Letters is published by the American Chemical Society. 1155 Sixteenth

    E-Print Network [OSTI]

    Ayres, Virginia

    Subscriber access provided by MICHIGAN STATE UNIVERSITY | MSU LIBRARIES Nano Letters is published Nitride Nanowires and Rods Benjamin W. Jacobs, Martin A. Crimp, Kaylee McElroy, and Virginia M. Ayres Nano hollow core screw dislocations, or nanopipes, in the nanowires and rods. The hollow cores were located

  19. Synthesis of nano-crystalline hydroxyapatite and ammonium sulfate from phosphogypsum waste

    SciTech Connect (OSTI)

    Mousa, Sahar, E-mail: dollyriri@yahoo.com [Inorganic Chemistry Department, National Research Centre, Dokki, P.O.Box:12622, Postal code: 11787 Cairo (Egypt) [Inorganic Chemistry Department, National Research Centre, Dokki, P.O.Box:12622, Postal code: 11787 Cairo (Egypt); King Abdulaziz University, Science and Art College, Chemistry Department, Rabigh Campus, P.O. Box:344, Postal code: 21911 Rabigh (Saudi Arabia); Hanna, Adly [Inorganic Chemistry Department, National Research Centre, Dokki, P.O.Box:12622, Postal code: 11787 Cairo (Egypt)] [Inorganic Chemistry Department, National Research Centre, Dokki, P.O.Box:12622, Postal code: 11787 Cairo (Egypt)

    2013-02-15T23:59:59.000Z

    Graphical abstract: TEM micrograph of dried HAP at 800 C. -- Abstract: Phosphogypsum (PG) waste which is derived from phosphoric acid manufacture by using wet method was converted into hydroxyapatite (HAP) and ammonium sulfate. Very simple method was applied by reacting PG with phosphoric acid in alkaline medium with adjusting pH using ammonia solution. The obtained nano-HAP was dried at 80 C and calcined at 600 C and 900 C for 2 h. Both of HAP and ammonium sulfate were characterized by X-ray diffraction (XRD) and infrared spectroscopy (IR) to study the structural evolution. The thermal behavior of nano-HAP was studied; the particle size and morphology were estimated by using transmission electron microscopy (TEM) and scanning electron microscopy (SEM). All the results showed that HAP nano-crystalline and ammonium sulfate can successfully be produced from phosphogypsum waste.

  20. Selective nano-patterning of graphene using a heated atomic force microscope tip

    SciTech Connect (OSTI)

    Choi, Young-Soo; Wu, Xuan; Lee, Dong-Weon, E-mail: mems@jnu.ac.kr [MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju (Korea, Republic of)] [MEMS and Nanotechnology Laboratory, School of Mechanical Engineering, Chonnam National University, Gwangju (Korea, Republic of)

    2014-04-15T23:59:59.000Z

    In this study, we introduce a selective thermochemical nano-patterning method of graphene on insulating substrates. A tiny heater formed at the end of an atomic force microscope (AFM) cantilever is optimized by a finite element method. The cantilever device is fabricated using conventional micromachining processes. After preliminary tests of the cantilever device, nano-patterning experiments are conducted with various conducting and insulating samples. The results indicate that faster scanning speed and higher contact force are desirable to reduce the sizes of nano-patterns. With the experimental condition of 1 ?m/s and 24 mW, the heated AFM tip generates a graphene oxide layer of 3.6 nm height and 363 nm width, on a 300 nm thick SiO{sub 2} layer, with a tip contact force of 100 nN.

  1. Characterizing the Nano and Micro Structure of Concrete toImprove its Durability

    SciTech Connect (OSTI)

    Monteiro, P.J.M.; Kirchheim, A.P.; Chae, S.; Fischer, Peter; MacDowell, Alastair; Schaible, Eirc; Wenk, H.R.; Macdowell, Alastair A.

    2009-01-13T23:59:59.000Z

    New and advanced methodologies have been developed to characterize the nano and microstructure of cement paste and concrete exposed to aggressive environments. High resolution full-field soft X-ray imaging in the water window is providing new insight on the nano scale of the cement hydration process, which leads to a nano-optimization of cement-based systems. Hard X-ray microtomography images of ice inside cement paste and cracking caused by the alkali?silica reaction (ASR) enables three-dimensional structural identification. The potential of neutron diffraction to determine reactive aggregates by measuring their residual strains and preferred orientation is studied. Results of experiments using these tools are shown on this paper.

  2. Characterizing the nano and micro structure of concrete to improve its durability

    SciTech Connect (OSTI)

    Monteiro, P.J.M.; Kirchheim, A.P.; Chae, S.; Fischer, P.; MacDowell, A.A.; Schaible, E.; Wenk, H.R.

    2008-10-22T23:59:59.000Z

    New and advanced methodologies have been developed to characterize the nano and microstructure of cement paste and concrete exposed to aggressive environments. High resolution full-field soft X-ray imaging in the water window is providing new insight on the nano scale of the cement hydration process, which leads to a nano-optimization of cement-based systems. Hard X-ray microtomography images on ice inside cement paste and cracking caused by the alkali-silica reaction (ASR) enables three-dimensional structural identification. The potential of neutron diffraction to determine reactive aggregates by measuring their residual strains and preferred orientation is studied. Results of experiments using these tools will be shown on this paper.

  3. A study of plasmonic enhanced transmission effects in nano-optics

    SciTech Connect (OSTI)

    Greg Gbur

    2012-01-24T23:59:59.000Z

    This project was a numerical study of the behavior of surface plasmons in nano-systems, focusing on the interaction between plasmons, light, and nano-scale structures such as nano-scale metallic wires and quantum wires/dots. The primary results of the project included: a) the demonstration of the use of surface plasmons to modify the spatial coherence of a light wave, b) the demonstration of a feasible plasmonic superresolved readout system, and c) the demonstration of a ?¢????Plasmonic Zeno effect?¢???, in which the attenuation of a light wave in metal is suppressed by breaking up the metal into a collection of structured layers. The integration of quantum wire/dot effects with the plasmonic simulations proved to be harder than expected, in large part due to the lack of accurate and simple quantum dot models.

  4. Micro-and nano-environments of C sequestration in soil: A multi-elemental STXMNEXAFS assessment of black C and organomineral associations

    E-Print Network [OSTI]

    Lehmann, Johannes

    Micro- and nano-environments of C sequestration in soil: A multi-elemental STXM­NEXAFS assessment-NEXAFS identified terminal micro- and nano-organic C repository environments in undisturbed organomineral assemblage-black C organic matter. The binding and sequestration of black C in the investigated micro- and nano

  5. The conquest of the nano-cosmos is occurring simultaneously in almost ev-ery field with a strong interdisciplinary and an increasing transdisciplinary

    E-Print Network [OSTI]

    Grundmann, Marius

    Preface The conquest of the nano-cosmos is occurring simultaneously in almost ev- ery field, optical, magnetic, and (bio)chemical properties of materials are beginning to be mastered on a nano-scale. This enables the fabrication of devices that rely on effects on the nano-scale. For the creation

  6. Fabrication of nano-structural arrays by channeling pulsed atomic beams through pulsed-laser standing-waves under off-resonant condition

    E-Print Network [OSTI]

    Zhu, Xiangdong

    Fabrication of nano-structural arrays by channeling pulsed atomic beams through pulsed 1998 We show that it is feasible to produce one- and two-dimensional nano-structure arrays by passing the reduced dimensions are of the order of nanometers (10 9 m . In particular, nano

  7. Postdoc/Assistent in Experimental Nanophotonics/Quantum Plasmonics We have an immediate opening for a postdoc/assistant position (TVL 13) in our group Nano

    E-Print Network [OSTI]

    Peters, Achim

    for a postdoc/assistant position (TVL 13) in our group Nano Optics. The candidate is expected to have extensive knowledge and experience in experimental quantum or nano optics. His/her research should be directed towards with other research activities within the nano optics group is expected. Additionally, the research should

  8. 3M-NANO is the annual International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale; it will be held in 2014 in Taipei, Taiwan. The ultimate

    E-Print Network [OSTI]

    Appelrath, Hans-Jürgen

    3M-NANO is the annual International Conference on Manipulation, Manufacturing and Measurement in research fields related to 3M-NANO topics are invited to submit papers. All accepted full papers (presented and nanomechatronics NEMS and their applications Nanopackaging Nanofluidics Bio-Nano devices and applications High

  9. Materials Science and Engineering B 117 (2005) 5361 Finite element analysis-based design of a fluid-flow control nano-valve

    E-Print Network [OSTI]

    Grujicic, Mica

    of a fluid-flow control nano-valve M. Grujicica,, G. Caoa, B. Pandurangana, W.N. Royb a Department A finite element method-based procedure is developed for the design of molecularly functionalized nano-size devices. The procedure is aimed at the single-walled carbon nano-tubes (SWCNTs) used in the construction

  10. Nano-magnetism of magnetostriction in Fe{sub 35}Co{sub 65}

    SciTech Connect (OSTI)

    Lisfi, A. [Department of Physics, Morgan State University, Baltimore, Maryland 21251 (United States); Ren, T.; Wuttig, M., E-mail: wuttig@umd.edu [Department of Materials Science and Engineering, University of Maryland, College Park, Maryland 20742 (United States); Khachaturyan, A. [Department of Materials Science and Engineering, University of California, Berkeley, California 94720 (United States)

    2014-03-03T23:59:59.000Z

    The nature of the large magnetostriction in body-centered Fe-based solid solutions has been widely discussed in the literature. Here, we use a combination of magnetostriction, magnetization, torque, and transmission electron microscopy measurements of specially annealed Co{sub 65}Fe{sub 35} to show that the magnetostriction is caused by coherent uniaxial nano-precipitates. We show further that these nano-precipitates lower the magnetocrystalline anisotropy in these alloys to K{sub 1}?=??2.16??10{sup 4}?J/m{sup 3}.

  11. Status of the Bio-Nano electron cyclotron resonance ion source at Toyo University

    SciTech Connect (OSTI)

    Uchida, T., E-mail: uchida-t@toyo.jp [Bio-Nano Electronics Research Centre, Toyo University, Kawagoe 350-8585 (Japan); Minezaki, H.; Ishihara, S. [Graduate School of Engineering, Toyo University, Kawagoe 350-8585 (Japan)] [Graduate School of Engineering, Toyo University, Kawagoe 350-8585 (Japan); Muramatsu, M.; Kitagawa, A.; Drentje, A. G. [National Institute of Radiological Sciences (NIRS), Chiba 263-8555 (Japan)] [National Institute of Radiological Sciences (NIRS), Chiba 263-8555 (Japan); Rcz, R.; Biri, S. [Institute for Nuclear Research (ATOMKI), H-4026 Debrecen (Hungary)] [Institute for Nuclear Research (ATOMKI), H-4026 Debrecen (Hungary); Asaji, T. [Oshima National College of Maritime Technology, Yamaguchi 742-2193 (Japan)] [Oshima National College of Maritime Technology, Yamaguchi 742-2193 (Japan); Kato, Y. [Graduate School of Engineering, Osaka University, Suita 565-0871 (Japan)] [Graduate School of Engineering, Osaka University, Suita 565-0871 (Japan); Yoshida, Y. [Bio-Nano Electronics Research Centre, Toyo University, Kawagoe 350-8585 (Japan) [Bio-Nano Electronics Research Centre, Toyo University, Kawagoe 350-8585 (Japan); Graduate School of Engineering, Toyo University, Kawagoe 350-8585 (Japan)

    2014-02-15T23:59:59.000Z

    In the paper, the material science experiments, carried out recently using the Bio-Nano electron cyclotron resonance ion source (ECRIS) at Toyo University, are reported. We have investigated several methods to synthesize endohedral C{sub 60} using ion-ion and ion-molecule collision reaction in the ECRIS. Because of the simplicity of the configuration, we can install a large choice of additional equipment in the ECRIS. The Bio-Nano ECRIS is suitable not only to test the materials production but also to test technical developments to improve or understand the performance of an ECRIS.

  12. Status of the Bio-Nano electron cyclotron resonance ion source at Toyo University

    E-Print Network [OSTI]

    Uchida, T; Ishihara, S; Muramatsu, M; Racz, R; Asaji, T; Kitagawa, A; Kato, Y; Biri, S; Drentje, A G; Yoshida, Y

    2015-01-01T23:59:59.000Z

    In the paper, the material science experiments, carried out recently using the Bio-Nano electron cyclotron resonance ion source (ECRIS) at Toyo University, are reported. We have investigated several methods to synthesize endohedral C60 using ion-ion and ion-molecule collision reaction in the ECRIS. Because of the simplicity of the configuration, we can install a large choice of additional equipment in the ECRIS. The Bio-Nano ECRIS is suitable not only to test the materials production but also to test technical developments to improve or understand the performance of an ECRIS.

  13. NanoSIP: Developing Community Imaging for Phylogenetic and Functional Characterization Using Cyanobacterial Mats

    SciTech Connect (OSTI)

    Woebken, D., L.C. Burow, L. Prufert-Bebout, B.M. Bebout, T. M. Hoehler, J. Pett-Ridge, A.M. Spormann; Singer, S W; McMurdie, P J; Weber, P K

    2011-10-01T23:59:59.000Z

    This project was to develop and optimize the following technologies: stable isotope probing + NanoSIMS analysis (nanoSIP), FISH, functional gene analysis, H2 production measurements, culturing, and metatranscriptomics for specific use in microbial mat systems. The larger goal was to further develop these methodologies in a way that facilitates their linkage, high fidelity 3-D correlation to location specific environmental change integrating geochemical characterization, such that ability to see and characterize microbial community responses to normal daily fluctuations and further ecological manipulations, in different locations of the mat communities is optimized.

  14. Dr. Brian L. Wardle Director, Nano-Engineered Composite aerospace STructures (NECST) Consortium

    E-Print Network [OSTI]

    Guiltinan, Mark

    are in the areas of nano-engineered advanced composites, bulk nanostructured materials, carbon-based material applications. Such hybrid advanced composites employ aligned carbon nanotubes (CNTs) to enhance laminate Composite aerospace STructures (NECST) Consortium and has served as the materials/structures lead on MIT

  15. Optical fibers go nano The manufacture of nanowires from optical fibers provides the longest, most uniform

    E-Print Network [OSTI]

    Optical fibers go nano The manufacture of nanowires from optical fibers provides the longest, most uniform and robust nanowires. Most important, the low optical loss associated to small surface roughness and high homogeneity allows the use of nanowires for optical applications and opens the way to a host

  16. Reliability of Nano-Structured Nickel Interconnections Replacing FlipChip Solder Assembly without Underfill

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    Reliability of Nano-Structured Nickel Interconnections Replacing FlipChip Solder Assembly without of Technology, GA 30332-0560 Abstract This paper reports the reliability of fine pitch interconnections using lower stresses in the interconnections and enhance reliability though they add electrical parasitics

  17. Identification of isotopically primitive interplanetary dust particles: A NanoSIMS isotopic imaging study

    E-Print Network [OSTI]

    Identification of isotopically primitive interplanetary dust particles: A NanoSIMS isotopic imaging contain larger regions with more modest enrichments in 15 N, leading to average bulk N isotopic of those IDPs that have anomalous bulk N isotopic compositions. These particles typically also contain

  18. Researchers develop bistable nano switch Carbon nanotubes (CNT) have been under intense study by scientists all

    E-Print Network [OSTI]

    Espinosa, Horacio D.

    Researchers develop bistable nano switch Carbon nanotubes (CNT) have been under intense study for nanoelectromechanical systems (NEMS). A type of one-dimensional structure with high-aspect ratio, carbon nanotubes have properties. Now scientists from Northwestern University have demonstrated a novel carbon nanotube

  19. Summary of the nano-related thermoelectric activities in BGU for the year of 2011

    E-Print Network [OSTI]

    Vardi, Amichay

    energy into electrical energy, plays an important role, particularly for the exploitation of waste heat of thermoelectric (TE) power generation. Alloys of type IV-VI, namely PbTe-, GeTe-, and SnTe- based, with ZT(=2 /)>1Summary of the nano-related thermoelectric activities in BGU for the year of 2011 Dr. Yaniv

  20. Thermal Bimorph Micro-Cantilever Based Nano-Calorimeter for Sensing of Energetic Materials

    E-Print Network [OSTI]

    Kang, Seokwon

    2012-07-16T23:59:59.000Z

    for the sensor (e.g., temperature distribution within the microcantilever, power supply, concentration of the analyte, etc.). Also, for the geometry present in this study the nano-coatings of high thermal conductivity materials (e.g., Carbon Nanotubes: CNTs) over...

  1. Self-Powered Wireless Nano-scale Sensor Networks within Chemical Reactors

    E-Print Network [OSTI]

    New South Wales, University of

    a reactor for a bottom-up control of the chemical synthesis with the ultimate goal of improvingSelf-Powered Wireless Nano-scale Sensor Networks within Chemical Reactors Eisa Zarepour1 Mahbub networks (NSNs) can be applied in many chemical applications to monitor and control the chemical process

  2. Tunable atomic termination in nano-necklace BiFeO{sub 3}

    SciTech Connect (OSTI)

    Sobhan, Mushtaq; Xu, Qiang; Yang, Qian; Anariba, Franklin; Wu, Ping, E-mail: wuping@sutd.edu.sg [Entropic Interface Group (EIG), Engineering Product Development, Singapore University of Technology and Design (SUTD), 20 Dover Drive (Singapore)

    2014-02-03T23:59:59.000Z

    We investigate the growth kinetics of BiFeO{sub 3} (BFO) nano-necklace based on first principles modeling and electrospinning experiments. A two-step layered growth mechanism is proposed to control the atomic termination of each nano-necklace. X-ray diffraction (XRD) results agree well with our model predictions; (1) samples calcined at 500 and 550?C consist of FeO{sub 2} (F-F) terminated nano-necklace, (2) samples calcined at 650?C consist of either BiO (B-B) or BiO and FeO{sub 2} (B-F) terminated ones. The XRD diffraction peaks are located at lower 2? values with a magnetic moment of 3.0?emu/g for the former and at higher 2? values with a decrease in the magnetic moment to 0.4?emu/g for the later samples. The activation energy associated with the growth of the nano-necklaces was experimentally determined to be 0.37?eV/atom. This study provides fundamental understanding for the long-sought layer-by-layer assembly of BFO nanostructures.

  3. Nano Res. 2012, 5(12): 896902896 Fabrication of Patterned Boron Carbide Nanowires and Their

    E-Print Network [OSTI]

    Gao, Hongjun

    Nano Res. 2012, 5(12): 896­902896 Fabrication of Patterned Boron Carbide Nanowires Large-area patterned boron carbide nanowires (B4C NWs) have been synthesized using chemical vapor for flexible cold cathode materials. KEYWORDS Boron carbide nanowires, patterned, field emission properties

  4. Microbial Power-Generating Capabilities on Micro-/Nano-Structured Anodes in

    E-Print Network [OSTI]

    Cincinnati, University of

    Microbial fuel cells (MFCs) are an alternative electricity gen- erating technology and efficient method-/Nano-Structured Anode Materials, Microbial Fuel Cell 1 Introduction The last three decades have witnessed significant develop- ments and performance improvements in microbial fuel cell (MFC) technology [1]. These advances

  5. Fast Optimization of Nano-CMOS Voltage-Controlled Oscillator using Polynomial Regression and Genetic Algorithm

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    Fast Optimization of Nano-CMOS Voltage-Controlled Oscillator using Polynomial Regression in a current-starved 50nm voltage-controlled oscillator (VCO). Accurate polynomial-regression based models have-CMOS), Voltage-Controlled Oscillator (VCO). 1. Introduction Digital design exploration and optimization is highly

  6. Comparison of the Resonant Frequency in Graphene and Metallic Nano-antennas

    E-Print Network [OSTI]

    Politècnica de Catalunya, Universitat

    Comparison of the Resonant Frequency in Graphene and Metallic Nano-antennas Ignacio Llatser, D-42119 Wuppertal, Germany Abstract. The scalability of the resonant frequency in graphene. The antenna resonances are obtained by combining the dispersion relation in free-standing graphene and gold

  7. TAILORING OF NANO-AND MICROSTRUCTURE IN BIOMIMETICALLY SYNTHESIZED CERAMIC FILMS

    E-Print Network [OSTI]

    Cho, Junghyun

    TAILORING OF NANO- AND MICROSTRUCTURE IN BIOMIMETICALLY SYNTHESIZED CERAMIC FILMS Guangneng Zhang University of New York at Binghamton Binghamton, NY 13902-6000 ABSTRACT A novel ceramic thin film deposition approach through which inorganic materials were deposited on a functionalized organic matrix from aqueous

  8. Simultaneous Power Fluctuation and Average Power Minimization during Nano-CMOS Behavioral Synthesis

    E-Print Network [OSTI]

    Mohanty, Saraju P.

    Simultaneous Power Fluctuation and Average Power Minimization during Nano-CMOS Behavioral Synthesis for the reduction of total power and power fluctuation dur- ing behavioral synthesis. We consider resources of dual component library which is then used during behavioral synthesis. The formulated multi-objective cost

  9. Dual attitude and parameter estimation of passively magnetically stabilized nano satellites$

    E-Print Network [OSTI]

    satellite using few, small sensors. A candidate minimal sensor set would be the spacecraft's own solar attitude sensors, a result of having small budgets for mass and power. Attitude determination can still be performed on a nano satellite with low fidelity sensors, but an accurate model of the spacecraft attitude

  10. A Penicillamine Biosensor Based on Tyrosinase Immobilized on Nano-Au/ PAMAM Dendrimer Modified Gold Electrode

    E-Print Network [OSTI]

    Kwak, Juhyoun

    Full Paper A Penicillamine Biosensor Based on Tyrosinase Immobilized on Nano-Au/ PAMAM Dendrimer-Au as an intermediator to immobilize the enzyme of tyrosinase. The characterization of the modified electrode). Tyrosinase can catalyze the oxidation of catechol to o- benzoquinone. When penicillamine was added

  11. Toughening of Epoxies Based on Self-Assembly of Nano-Sized Amphiphilic Block Copolymer Micelles

    E-Print Network [OSTI]

    Liu, Jia

    2010-01-16T23:59:59.000Z

    (ethylene-altpropylene)- b-poly(ethylene oxide) (PEP-PEO) block copolymer (BCP) micelle particles. The amphiphilic BCP toughener was incorporated into a liquid epoxy resin and selfassembled into well-dispersed 15 nm spherical micelle particles. The nano-sized BCP, at 5 wt...

  12. NANO-DEVICES FOR ENHANCED C S SCOOLING, STORAGE AND SENSING

    E-Print Network [OSTI]

    Banerjee, Debjyoti

    Dynamics ­ DOE: Nanofluids for Thermal Energy Storage (SOLAR ENERGY) 2 of 5 MultiMulti--Phase Flows: Nanofluids for Thermal Energy Storage (SOLAR ENERGY) ­ Qatar National Research Foundation (QNRF): Nanofluids. ­ CNT Furnace: Energy Systems Lab. ­ Nano-Manufacturing: Wet Lab. 7 Shared User Facilities­ 7 Shared

  13. Molecular dynamics simulations of the nano-scale room-temperature oxidation of aluminum single crystals

    E-Print Network [OSTI]

    Southern California, University of

    Molecular dynamics simulations of the nano-scale room-temperature oxidation of aluminum single Abstract The oxidation of aluminum single crystals is studied using molecular dynamics (MD) simulations with dynamic charge transfer between atoms. The simulations are performed on three aluminum low-index surfaces

  14. NanoSIMS analysis of arsenic and selenium in cereal grain

    SciTech Connect (OSTI)

    Moore, Katie L.; Schrder, Markus; Lombi, Enzo; Zhao, Fang-Jie; McGrath, Steve P.; Hawkesford, Malcolm J.; Shewry, Peter R.; Grovenor, Chris R.M. (Rothamsted); (UCopenhagen); (Oxford)

    2012-09-05T23:59:59.000Z

    Cereals are an important source of selenium (Se) to humans and many people have inadequate intakes of this essential trace element. Conversely, arsenic (As) is toxic and may accumulate in rice grain at levels that pose a health risk. Knowledge of the localization of selenium and arsenic within the cereal grain will aid understanding of their deposition patterns and the impact of processes such as milling. High-resolution secondary ion mass spectrometry (NanoSIMS) was used to determine the localization of Se in wheat (Triticum aestivum) and As in rice (Oryza sativa). Combined synchrotron X-ray fluorescence (S-XRF) and NanoSIMS analysis utilized the strengths of both techniques. Selenium was concentrated in the protein surrounding the starch granules in the starchy endosperm cells and more homogeneously distributed in the aleurone cells but with Se-rich hotspots. Arsenic was concentrated in the subaleurone endosperm cells in association with the protein matrix rather than in the aleurone cells. NanoSIMS indicated that the high intensity of As identified in the S-XRF image was localized in micron-sized hotspots near the ovular vascular trace and nucellar projection. This is the first study showing subcellular localization in grain samples containing parts per million concentrations of Se and As. There is good quantitative agreement between NanoSIMS and S-XRF.

  15. Micro Catalytic Combustor with Pd/Nano-porous Alumina for High-Temperature Application

    E-Print Network [OSTI]

    Kasagi, Nobuhide

    Micro Catalytic Combustor with Pd/Nano-porous Alumina for High-Temperature Application Takashi: A micro-scale catalytic combustor using high-precision ceramic tape-casting technology has been developed surface reaction of butane. In combustion experiments with a prototype combustor, the wall temperature

  16. NANO EXPRESS Open Access Au/Pd core-shell nanoparticles with varied hollow

    E-Print Network [OSTI]

    Liu, Fuqiang

    NANO EXPRESS Open Access Au/Pd core-shell nanoparticles with varied hollow Au cores for enhanced on hollow Au nanospheres. The unique nanoparticles were characterized by X-ray diffraction, X of the polycrystalline hollow Au nanospheres was reduced, and the structures became highly porous. After the Pd shell

  17. Nano-wires with surface disorder: Giant localization lengths and quantum-to-classical crossover

    E-Print Network [OSTI]

    J. Feist; A. Bcker; R. Ketzmerick; S. Rotter; B. Huckestein; J. Burgdrfer

    2006-09-14T23:59:59.000Z

    We investigate electronic quantum transport through nano-wires with one-sided surface roughness. A magnetic field perpendicular to the scattering region is shown to lead to exponentially diverging localization lengths in the quantum-to-classical crossover regime. This effect can be quantitatively accounted for by tunneling between the regular and the chaotic components of the underlying mixed classical phase space.

  18. Tungsten nano-tendril growth in the Alcator C-Mod divertor

    E-Print Network [OSTI]

    Baldwin, M.J.

    Growth of tungsten nano-tendrils ('fuzz') has been observed for the first time in the divertor region of a high-power density tokamak experiment. After 14 consecutive helium L-mode discharges in Alcator C-Mod, the tip of ...

  19. NanoFermentationTM Process Wins R&D 100 Award

    E-Print Network [OSTI]

    #12;NanoFermentationTM Process Wins R&D 100 Award New Process Developed for Manufacturing Nanoscale, which in turn result in part from concerns about reliability of manufacturing techniques. The Project temperature, incubation time, and choice of electron donor or the addition of certain chemical additives

  20. A photonic nano-architecture is designed to enhance solar water splitting effi-

    E-Print Network [OSTI]

    Steiner, Ullrich

    energy into hydrogen. However, the solar- to-H2 conversion efficiency is still very low due to rapid bulk artificial photosynthesis routes using solar energy to produce H2 or other fuels is an attractive scientificA photonic nano-architecture is designed to enhance solar water splitting effi- ciency

  1. ISSN 1473-0197 Micro-& nano-fluidic research for chemistry, physics, biology, & bioengineering

    E-Print Network [OSTI]

    Gillette, Martha U.

    ISSN 1473-0197 Micro- & nano- fluidic research for chemistry, physics, biology, & bioengineering will facilitate the development of organized neural networks for investigating the development and function of nervous system networks. Producing ordered networks of neurons with defined connectivity in vitro presents

  2. Coupling an electron spin in a semiconductor quantum dot to an optical nano-cavity

    E-Print Network [OSTI]

    Arka Majumdar; Per Kaer; Michal Bajcsy; Erik D. Kim; Konstantinos G. Lagoudakis; Armand Rundquist; Jelena Vuckovic

    2013-04-07T23:59:59.000Z

    We propose a scheme to efficiently couple a single quantum dot electron spin to an optical nano-cavity, which enables us to simultaneously benefit from a cavity as an efficient photonic interface, as well as to perform high fidelity (nearly 100%) spin initialization and manipulation achievable in bulk semiconductors. Moreover, the presence of the cavity speeds up the spin initialization process beyond GHz.

  3. Synthesis of gold nano-particles in a microfluidic platform for water quality monitoring applications

    E-Print Network [OSTI]

    Datta, Sayak

    2009-05-15T23:59:59.000Z

    A microfluidic lab-on-a-chip (LOC) device for in-situ synthesis of gold nano-particles was developed. The long term goal is to develop a portable hand-held diagnostic platform for monitoring water quality (e.g., detecting metal ion pollutants...

  4. Integrated Nano-to-Millimeter (In2m) Systems MEMS Safety &

    E-Print Network [OSTI]

    Maryland at College Park, University of

    CALCE Electronic Products and Systems Center University of Maryland Article: Nano-to-Millimeter Scale Integrated Systems H. Last, M. Deeds, D. Garvick, R. Kavetsky Naval Surface Warfare Center, Indian Head Division P. Sandborn, E. B. Magrab, S. K. Gupta CALCE Electronic Products and Systems Center University

  5. Micro/Nano Materials for Energy Storage, Fuel Cells and Sensors

    E-Print Network [OSTI]

    Nakamura, Iku

    energy including hydrogen storage material, fuel cells such as biofuel cells, proton exchange membrane15 Micro/Nano Materials for Energy Storage, Fuel Cells and Sensors Speaker: Prof. Dr. Li-Xian Sun fuel cells, direct methanol fuel cells, clean combustion of coal, etc.; 3) Bio/chemical sensors based

  6. The Prediction and Simulation for the Mechanical Properties of Ceramic-Based Composites Reinforced with Nano-Micro Particles

    SciTech Connect (OSTI)

    Luo Dongmei; Hu Jinshan; Yang Hong [Environment and Civil Engineering School, Foshan University, Foshan, 528000 (China); Zhou Yinglong [Department of Mechatronics Engineering, Foshan University, Foshan 528000 (China)

    2010-05-21T23:59:59.000Z

    The global-local homogenization method with precise period boundary conditions is applied to predict and simulate the mechanical properties of ceramic composites reinforced by spherical nano-micro particles with enwrapping and nesting arrays. The numerical simulation is performed with different size ratios of nano-micro particles, and different configurations for representative volume element. The results show that the low radius ratios of nano-micro particles produce a larger effective Young's modulus for its more uniform dispersion, and the hexagon RVE with nesting array can make an overestimation for effective elastic modulus of ceramic composites, and the interfacial damage between nano-microscopic particles and matrix degenerates the effective elastic modulus. It shows in this paper that it is significant to improve the mechanical properties of ceramic materials by mixing some nano- and micro-particles into the matrix with good designed array methods from the viewpoints of nano-microscopic crystal structure, and a rational interfacial damage model should be further proposed to investigate the toughening mechanism of ceramic-composites reinforced with nano-micro particles.

  7. Catalyzed Nano-Framework Stablized High Density Reversible Hydrogen Storage Systems

    SciTech Connect (OSTI)

    Xia Tang , Susanne M. Opalka , Daniel A. Mosher, Bruce L. Laube, Ronald J. Brown, Thomas H. Vanderspurt, Sarah Arsenault, Robert Wu, Jamie Strickler, Ewa. Ronnebro, Tim. Boyle and Joseph Cordaro

    2010-06-30T23:59:59.000Z

    A wide range of high capacity on-board rechargeable material candidates have exhibited non-ideal behavior related to irreversible hydrogen discharge / recharge behavior, and kinetic instability or retardation. This project addresses these issues by incorporating solvated and other forms of complex metal hydrides, with an emphasis on borohydrides, into nano-scale frameworks of low density, high surface area skeleton materials to stabilize, catalyze, and control desorption product formation associated with such complex metal hydrides. A variety of framework chemistries and hydride / framework combinations were investigated to make a relatively broad assessment of the method'?s potential. In this project, the hydride / framework interactions were tuned to decrease desorption temperatures for highly stable compounds or increase desorption temperatures for unstable high capacity compounds, and to influence desorption product formation for improved reversibility. First principle modeling was used to explore heterogeneous catalysis of hydride reversibility by modeling H{sub 2} dissociation, hydrogen migration, and rehydrogenation. Atomic modeling also demonstrated enhanced NaTi(BH{sub 4}){sub 4} stabilization at nano-framework surfaces modified with multi-functional agents. Amine multi-functional agents were found to have more balanced interactions with nano-framework and hydride clusters than other functional groups investigated. Experimentation demonstrated that incorporation of Ca(BH{sub 4}){sub 2} and Mg(BH{sub 4}){sub 2} in aerogels enhanced hydride desorption kinetics. Carbon aerogels were identified as the most suitable nano-frameworks for hydride kinetic enhancement and high hydride loading. High loading of NaTi(BH{sub 4}){sub 4} ligand complex in SiO{sub 2} aerogel was achieved and hydride stability was improved with the aerogel. Although improvements of desorption kinetics was observed, the incorporation of Ca(BH{sub 4}){sub 2} and Mg(BH{sub 4}){sub 2} in nano-frameworks did not improve their H{sub 2} absorption due to the formation of stable alkaline earth B12H12 intermediates upon rehydrogenation. This project primarily investigated the effect of nano-framework surface chemistry on hydride properties, while the effect of pore size is the focus area of other efforts (e.g., HRL, Sandia National Laboratories (SNL) etc.) within the Metal Hydride Center of Excellence (MHCoE). The projects were complementary in gaining an overall understanding of the influence of nano-frameworks on hydride behavior.

  8. Film Si Solar Cells with Nano Si: Cooperative Research and Development Final Report, CRADA Number CRD-09-00356

    SciTech Connect (OSTI)

    Wang, Q.

    2011-05-01T23:59:59.000Z

    Nevada Nanotechnology Center and Si group at NREL will work together to develop a-Si based solar cells with nano-Si technique. We will explore the existing a-Si based film solar cell technology at NREL and nano scale Si technology at Nevada Nanotechnology Center. By exchanging information, we will come; up with some new cell structures using nano-Si. We expect the new a-Si based cells will have optical enhancement or better electronic or optical properties of absorber layer to improve solar cell performance.

  9. Self-organized Nano-lens Arrays by Intensified Dewetting of Electron Beam Modified Polymer Thin-films

    E-Print Network [OSTI]

    Ankur Verma; Ashutosh Sharma

    2011-09-18T23:59:59.000Z

    Sub-100 nm polymeric spherical plano-convex nano-lens arrays are fabricated using short electron beam exposures to selectively modify the ultrathin (nano-lenses. The intensified self-organized dewetting under a water-organic solvent mixture overcomes the limitations on surface tension and dewetting force and thus facilitates the formation of sub-100 nm diameter polymer nanolenses of tunable curvature. By varying the extent of e-beam exposure, various configurations from isolated to connected nano-lens arrays can be fabricated.

  10. Bubble nucleation on nano- to micro-size cavities and posts: An experimental validation of classical theory

    E-Print Network [OSTI]

    Phillips, B.

    Recently reported data suggest that bubble nucleation on surfaces with nano-sized features (cavities and posts) may occur close to the thermodynamic saturation temperature. However, according to the traditional theory of ...

  11. Photodegradation of luminescence in organic-ligand-capped Eu{sup 3+}:LaF{sub 3} nano-particles

    SciTech Connect (OSTI)

    King, Gavin G. G.; Taylor, Luke R.; Longdell, Jevon J., E-mail: jevon.longdell@otago.ac.nz [Department of Physics, University of Otago, P.O. Box 56, Dunedin 9054 (New Zealand); Clarke, David J.; Quilty, J. W. [Callaghan Innovation Research Limited, P.O. Box 31-310, Lower Hutt 5040 (New Zealand)

    2014-01-28T23:59:59.000Z

    The luminescence from europium doped lanthanum trifluoride (Eu{sup 3+}:LaF{sub 3}) nano-crystals can be greatly enhanced by capping with ?-diketonate organic ligands. Here, we report on photo-stability measurements for the case of nano-crystals capped with thenoyltrifluroacetone (TTA) and compared with those capped with an inactive ligand, oleic acid. With exposure to UV pump light, we observed significant decrease in fluorescence and change in emission spectrum of the TTA-capped nano-particles whilst the fluorescence lifetime remained approximately constant. After a dose of order 70?kJ?cm{sup ?2}, the luminescence level was similar to that of oleic acid capped nano-crystals. We discuss possible mechanisms.

  12. Piezoelectric Micro/Nano-Pillars for Energy Harvesting & Medical Ultrasound Applications Max Lifson, Dartmouth College, SURF 2010 Fellow

    E-Print Network [OSTI]

    Li, Mo

    Piezoelectric Micro/Nano-Pillars for Energy Harvesting & Medical Ultrasound Applications Max Lifson these pillars are actually hollow nanotubes, the purpose of this study is to verify a process that can be used

  13. Glass softening, crystallization, and vaporization of nano-aggregates of Amorphous Solid Water: Fast Scanning Calorimetry studies

    E-Print Network [OSTI]

    Deepanjan Bhattacharya; Liam OReilly; Vlad Sadtchenko

    2014-10-31T23:59:59.000Z

    Fast scanning calorimetry (FSC) was employed to investigate glass softening dynamics in amorphous solid water (ASW) nano-aggregates with thicknesses ranging from 2 to 20 nm. ASW nano-aggregates were prepared by vapor-deposition on the surface of a tungsten filament near 141 K and then heated at a rate of 100 kK/s. The resulting thermogram complex endo- and exothermal features were analyzed using a simple model. The results of the analysis show that glass softening of ASW nano-aggregates takes place at 160 K and vaporization of ASW nano-aggregates can take place at temperatures as low as 185 K. The results of these studies are discussed in conjunction with results of past studies of glass softening dynamics in water in various confining geometries.

  14. Predictive design and fabrication of complex micro and nano patterns via wrinkling for scalable and affordable manufacturing

    E-Print Network [OSTI]

    Saha, Sourabh Kumar

    2014-01-01T23:59:59.000Z

    There is a demonstrated need for scalable and affordable manufacturing of complex micro and nano scale structures for applications such as fluidics-based medical diagnostics and photonicsbased sensing. Although high-rate ...

  15. Production of ultra-thin nano-scaled graphene platelets from meso-carbon micro-beads

    DOE Patents [OSTI]

    Zhamu, Aruna; Guo, Jiusheng; Jang, Bor Z

    2014-11-11T23:59:59.000Z

    A method of producing nano-scaled graphene platelets (NGPs) having an average thickness no greater than 50 nm, typically less than 2 nm, and, in many cases, no greater than 1 nm. The method comprises (a) intercalating a supply of meso-carbon microbeads (MCMBs) to produce intercalated MCMBs; and (b) exfoliating the intercalated MCMBs at a temperature and a pressure for a sufficient period of time to produce the desired NGPs. Optionally, the exfoliated product may be subjected to a mechanical shearing treatment, such as air milling, air jet milling, ball milling, pressurized fluid milling, rotating-blade grinding, or ultrasonicating. The NGPs are excellent reinforcement fillers for a range of matrix materials to produce nanocomposites. Nano-scaled graphene platelets are much lower-cost alternatives to carbon nano-tubes or carbon nano-fibers.

  16. Centrifugal casting and fast curing of polydimethylsiloxane (PDMS) for the manufacture of micro and nano featured components

    E-Print Network [OSTI]

    Mazzeo, Aaron D. (Aaron David), 1979-

    2009-01-01T23:59:59.000Z

    The thermosetting resin polydimethylsiloxane (PDMS) is commonly used to prototype micro and nano featured components. In the field of microfluidics, PDMS-based devices have been used for cell sorting, cell culturing, ...

  17. Sub-Kelvin Cooling of a Macroscopic Oscillator and femto-Newton Force Measurement

    E-Print Network [OSTI]

    Mller, F; Wang, L J

    2007-01-01T23:59:59.000Z

    Measuring very small forces, particularly those of a gravitational nature, has always been of great interest, as fundamental tests of our understanding of the physical laws. Ultra-long period mechanical oscillators, typically used in such measurements, will have kT/2 of thermal energy associated with each degree of freedom, owing to the equal-partition of energy. Moreover, additional seismic fluctuations in the low frequency band can raise this equivalent temperature significantly to 10^5 K. Recently, various methods using opto-mechanical forces have been reported to decrease this thermal energy for MHz, micro-cantilever oscillators, effectively cooling them. Here we show the direct, dynamical cooling of a gram-size, macroscopic oscillator to 300 mK in equivalent temperature - noise reduction by a factor of 10^6. By precisely measuring the torsional oscillator's position, we dynamically provide an external 'viscous' damping force. Such an added, dissipative force is essentially free of noise, resulting in rap...

  18. PhD thesis subject Institut FEMTO-ST (UMR CNRS 6174/UFC/ENSMM/UTBM)

    E-Print Network [OSTI]

    Jeanjean, Louis

    on the production domain, the maintenance is either preventive or corrective. The preventive maintenance is always, due to the system degradation, a maintenance phase has to be planned to solve the problem and to re-establish the desired throughput. Actually, the system is supposed to take maintenance phases into account and depending

  19. Dynamics of femto-and nanosecond laser ablation plumes investigated using optical emission spectroscopy

    E-Print Network [OSTI]

    Harilal, S. S.

    . Plasma formation occurs when a high powered pulsed laser is focused onto a target such that the energy, such as pulse duration, energy, and wave- length; along with the target properties and surrounding conditions,10 ion beams11 of various charge states, laser-ablation inductively coupled-plasma mass-spectrometry (LA

  20. Pico- and nanosecond laser ablation of mixed tungsten / aluminium films

    E-Print Network [OSTI]

    Wisse, M; Steiner, R; Mathys, D; Stumpp, A; Joanny, M; Travere, J M; Meyer, E

    2014-01-01T23:59:59.000Z

    In order to extend the investigation of laser-assisted cleaning of ITER-relevant first mirror materials to the picosecond regime, a commercial laser system delivering 10 picosecond pulses at 355 nm at a frequency of up to 1 MHz has been used to investigate the ablation of mixed aluminium (oxide) / tungsten (oxide) layers deposited on poly- and nanocrystalline molybdenum as well as nanocrystalline rhodium mirrors. Characterization before and after cleaning using scanning electron microscopy (SEM) and spectrophotometry shows heavy dust formation, resulting in a degradation of the reflectivity. Cleaning using a 5 nanosecond pulses at 350 and 532 nm, on the other hand, proved very promising. The structure of the film remnants suggests that in this case buckling was the underlying removal mechanism rather than ablation. Repeated coating and cleaning using nanosecond pulses is demonstrated.

  1. Assessing the Feasibility of Pico Hydro Technology on TESC

    E-Print Network [OSTI]

    ;Objective/Motivation · Hydroelectric Power is very clean on small scales · Pacific NW: Lots of water Measure the flow of the stream to estimate the available hydroelectric power #12;Stream Flow Measurements

  2. St. Lucie County Cooperative Extension 8400 Picos Road, Suite 101

    E-Print Network [OSTI]

    Watson, Craig A.

    If Commercial Landscape Maintenance workers want to legally apply "Caution" labeled pesticides including of a chapter 482 "Limited Commercial Landscape Maintenance license". In order to obtain this license Landscape Maintenance Training workshop plus pass a Limited Certification Landscape Maintenance exam

  3. MHK Technologies/European Pico Pilot Plant | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpIncMAKGalway Bay IE <AirWEC <EPAM <Enermar < MHK< MHK

  4. MHK Projects/OWC Pico Power Plant | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy Resources Jump to:46 - 429Lacey,(MonasterLowell Point, Alaska:LuzClick hereInformation OSU DirectOWC

  5. Pico Rivera, California: Energy Resources | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoadingPenobscot County, Maine: Energy Resources2003)Pickaway County, Ohio:SouthPickwickRivera,

  6. Pico Vermelho Geothermal Power Plant | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoadingPenobscot County, Maine: Energy Resources2003)Pickaway County,

  7. Pico Vermelho-Ribeira Grande Geothermal Area | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoadingPenobscot County, Maine: Energy Resources2003)Pickaway County,Vermelho-Ribeira Grande

  8. Controlled Dispensing and Mixing of Pico- to Nanoliter Volumes Using

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed New SubstationCleanCommunity2Workshops01 SF-30 Attachment2012sharesControl

  9. Towards a better understanding of the structure of nano-minerals at ambient and extreme conditions

    SciTech Connect (OSTI)

    Parise, John B.; Ehm, Lars; Michel, F. Marc [Stony Brook University, Department of Geosciences and Mineral Physics Institute (United States); Antao, Sytle; Chupas, Peter J.; Lee, Peter L.; Martin, C. David; Shastri, Sarvjit [X-ray Science Division, Argonne National Laboratory, Argonne IL 60439 (United States)

    2009-01-29T23:59:59.000Z

    The high-pressure (HP) behavior of nano-crystalline mackinawite (n-FeS) with particle sizes of 6, 7, and 8 nm has been investigated by high-energy X-ray total scattering and pair distribution function analysis. An irreversible first-order structural phase transition from tetragonal mackinawite to orthorhombic FeS-II was observed at about 3 GPa. The transition is induced by the closure of the van-der-Waals gap in the layered mackinawite structure. A grain size effect on the transition pressure and the compressibility was observed. The n-FcS study is an example of a broad class of nano-crystalline minerals where the total scattering (TS) approach provides significant new information on local-, intermediate- and long-range structure. Under extreme conditions, of pressure in this case, straightforward modifications allow quantitative descriptions of the transformations mechanisms.

  10. SiN-SiC nanofilm: A nano-functional ceramic with bipolar magnetic semiconducting character

    SciTech Connect (OSTI)

    Zhang, Jiahui; Li, Xingxing [Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China); Yang, Jinlong, E-mail: jlyang@ustc.edu.cn [Hefei National Laboratory for Physical Science at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026 (China); Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026 (China)

    2014-04-28T23:59:59.000Z

    Nowadays, functional ceramics have been largely explored for application in various fields. However, magnetic functional ceramics for spintronics remain little studied. Here, we propose a nano-functional ceramic of sphalerite SiN-SiC nanofilm with intrinsic ferromagnetic order. Based on first principles calculations, the SiN-SiC nanofilm is found to be a ferromagnetic semiconductor with an indirect band gap of 1.71?eV. By mean field theory, the Curie temperature is estimated to be 304?K, close to room temperature. Furthermore, the valence band and conduction band states of the nanofilm exhibit inverse spin-polarization around the Fermi level. Thus, the SiN-SiC nanofilm is a typical bipolar magnetic semiconductor in which completely spin-polarized currents with reversible spin polarization can be created and controlled by applying a gate voltage. Such a nano-functional ceramic provides a possible route for electrical manipulation of carrier's spin orientation.

  11. Study of nano imprinting using soft lithography on Krafty glue and PVDF polymer thin films

    SciTech Connect (OSTI)

    Sankar, M. S. Ravi, E-mail: rameshg.phy@pondiuni.edu; Gangineni, Ramesh Babu, E-mail: rameshg.phy@pondiuni.edu [Department of Physics, Pondicherry University, R. V. Nagar, Kalapet, Puducherry - 605014 (India)

    2014-04-24T23:59:59.000Z

    The present work reveals soft lithography strategy based on self assembly and replica molding for carrying out micro and nanofabrication. It provides a convenient, effective and very low cost method for the formation and manufacturing of micro and nano structures. Al-layer of compact disc (sony CD-R) used as a stamp with patterned relief structures to generate patterns and structures with pattern size of 100nm height, 1.7 ?m wide. In literature, PDMS (Polydimethylsiloxane) solution is widely used to get negative copy of the Al-layer. In this work, we have used inexpensive white glue (Polyvinylacetate + water), 15gm (?5) and PVDF (Polyvinylidene difluoride) spin coated films and successfully transferred the nano patterns of Al layer on to white glue and PVDF films.

  12. Self-Assembled Silica Nano-Composite Polymer Electrolytes: Synthesis, Rheology & Electrochemistry

    SciTech Connect (OSTI)

    Khan, Saad A.: Fedkiw Peter S.; Baker, Gregory L.

    2007-01-24T23:59:59.000Z

    The ultimate objectives of this research are to understand the principles underpinning nano-composite polymer electrolytes (CPEs) and facilitate development of novel CPEs that are low-cost, have high conductivities, large Li+ transference numbers, improved electrolyte-electrode interfacial stability, yield long cycle life, exhibit mechanical stability and are easily processable. Our approach is to use nanoparticulate silica fillers to formulate novel composite electrolytes consisting of surface-modified fumed silica nano-particles in polyethylene oxides (PEO) in the presence of lithium salts. We intend to design single-ion conducting silica nanoparticles which provide CPEs with high Li+ transference numbers. We also will develop low-Mw (molecular weight), high-Mw and crosslinked PEO electrolytes with tunable properties in terms of conductivity, transference number, interfacial stability, processability and mechanical strength

  13. Surface force confinement cell for neutron reflectometry studies of complex fluids under nano-confinement

    SciTech Connect (OSTI)

    Cho, Jae-Hie [ORNL; Smith, Gregory Scott [ORNL; Hamilton, William A. [ANSTO; Mulder, D. [University of California, Davis; Kuhl, T. L. [University of California, Davis; Mays, Jimmy [ORNL

    2008-01-01T23:59:59.000Z

    In this paper, we describe the construction of a new neutron surface force confinement cell (NSFCC). The NSFCC is equipped with hydraulically powered in-situ, temporally stable, force control system for simultaneous neutron reflectometry studies of nano-confined complex fluid systems. Test measurements with deuterated toluene confined between two opposing diblock copolymer (polystyrene + poly 2-vinylpyridine) coated quartz substrates demonstrate the capabilities of the NSFCC. With increasing hydraulically-applied force, a series of well-defined decreasing separations were observed from neutron reflectivity measurements. No noticeable changes in the hydraulic pressure used for controlling the surface separation were observed during the measurements, demonstrating the high stability of the apparatus. This newly designed NSFCC introduces a higher level of control for studies of confinement and consequent finite size effects on nano-scale structure in a variety of complex fluid and soft condensed matter systems.

  14. Nano-Scale Interpenetrating Phase Composites (IPC S) for Industrial and Vehicle Applications

    SciTech Connect (OSTI)

    Hemrick, James Gordon [ORNL; Hu, Michael Z. [ORNL

    2010-06-01T23:59:59.000Z

    A one-year project was completed at Oak Ridge National Laboratory (ORNL) to explore the technical and economic feasibility of producing nano-scale Interpenetrating Phase Composite (IPC) components of a usable size for actual testing/implementation in a real applications such as high wear/corrosion resistant refractory shapes for industrial applications, lightweight vehicle braking system components, or lower cost/higher performance military body and vehicle armor. Nano-scale IPC s with improved mechanical, electrical, and thermal properties have previously been demonstrated at the lab scale, but have been limited in size. The work performed under this project was focused on investigating the ability to take the current traditional lab scale processes to a manufacturing scale through scaling of these processes or through the utilization of an alternative high-temperature process.

  15. Nano-scaled graphene platelets with a high length-to-width aspect ratio

    DOE Patents [OSTI]

    Zhamu, Aruna (Centerville, OH); Guo, Jiusheng (Centerville, OH); Jang, Bor Z. (Centerville, OH)

    2010-09-07T23:59:59.000Z

    This invention provides a nano-scaled graphene platelet (NGP) having a thickness no greater than 100 nm and a length-to-width ratio no less than 3 (preferably greater than 10). The NGP with a high length-to-width ratio can be prepared by using a method comprising (a) intercalating a carbon fiber or graphite fiber with an intercalate to form an intercalated fiber; (b) exfoliating the intercalated fiber to obtain an exfoliated fiber comprising graphene sheets or flakes; and (c) separating the graphene sheets or flakes to obtain nano-scaled graphene platelets. The invention also provides a nanocomposite material comprising an NGP with a high length-to-width ratio. Such a nanocomposite can become electrically conductive with a small weight fraction of NGPs. Conductive composites are particularly useful for shielding of sensitive electronic equipment against electromagnetic interference (EMI) or radio frequency interference (RFI), and for electrostatic charge dissipation.

  16. Development of in situ, at-wavelength metrology for soft x-ray nano-focusing

    SciTech Connect (OSTI)

    Yuan, Sheng Sam; Yashchuk, Valeriy V.; Goldberg, Kenneth A.; Celestre, Richard; McKinney, Wayne R.; Morrison, Gregory Y.; Warwick, Tony; Padmore, Howard A.

    2010-09-19T23:59:59.000Z

    At the Advanced Light Source (ALS), we are developing broadly applicable, high-accuracy, in situ, at-wavelength wavefront slope measurement techniques for Kirkpatrick-Baez (KB) mirror nano-focusing. We describe here details of the metrology beamline endstation, the at-wavelength tests, and an original alignment method that have already allowed us to precisely set a bendable KB mirror to achieve a FWHM focused spot size of ~;;120 nm, at 1-nm soft x-ray wavelength.

  17. Synthesis, characterization and magnetic behavior of Co/MCM-41 nano-composites

    SciTech Connect (OSTI)

    Cuello, N. [CITeQ-Universidad Tecnolgica Nacional-Facultad Regional Crdoba, Maestro Lpez esq. Cruz Roja Argentina, 5016 Crdoba (Argentina); Elas, V. [CITeQ-Universidad Tecnolgica Nacional-Facultad Regional Crdoba, Maestro Lpez esq. Cruz Roja Argentina, 5016 Crdoba (Argentina); CONICET (Argentina); Crivello, M. [CITeQ-Universidad Tecnolgica Nacional-Facultad Regional Crdoba, Maestro Lpez esq. Cruz Roja Argentina, 5016 Crdoba (Argentina); Oliva, M. [FaMAF-Universidad Nacional de Crdoba, Crdoba (Argentina); IFEG-CONICET (Argentina); Eimer, G., E-mail: geimer@scdt.frc.utn.edu.ar [CITeQ-Universidad Tecnolgica Nacional-Facultad Regional Crdoba, Maestro Lpez esq. Cruz Roja Argentina, 5016 Crdoba (Argentina); CONICET (Argentina)

    2013-09-15T23:59:59.000Z

    Synthesis, structure and magnetic properties of Co/MCM-41 as magnetic nano-composites have been investigated. Mesoporous materials with different degrees of metal loading were prepared by wet impregnation and characterized by ICP, XRD, N{sub 2} adsorption, UVvis DRS, TPR and EPMA-EDS. Cobalt oxide clusters and Co{sub 3}O{sub 4} nano-particles could be confined inside the mesopores of MCM-41, being this fact favored by the Co loading increasing. In addition, larger crystals of Co{sub 3}O{sub 4} detectable by XRD also grow on the surface when the Co loading is enhanced. The magnetic characterization was performed in a SQUID magnetometer using a maximum magnetic applied field {sub 0}Ha=1 T. While the samples with the higher Co loadings showed a behavior typically paramagnetic, a superparamagnetic contribution is more notorious for lower loadings, suggesting high Co species dispersion. - Graphical abstract: Room temperature hysteresis loops as a function of the Co content. Display Omitted - Highlights: Co species as isolated Co{sup 2+}, oxide clusters and Co{sub 3}O{sub 4} nano-particles were detected. For higher Co loads were detected, by XRD, Co{sub 3}O{sub 4} particles on the external surface. The confining of Co species inside the mesopores was achieved by increasing Co load. Paramagnetism from oxide clusters/nano-particles becomes dominant for higher Co loads. Superparamagnetism can be assigned to Co species of small size and finely dispersed.

  18. Irradiation creep of nano-powder sintered silicon carbide at low neutron fluences

    SciTech Connect (OSTI)

    Koyanagi, Takaaki [ORNL; Shimoda, Kazuya [Kyoto University, Japan; Kondo, Sosuke [Kyoto University, Japan; Hinoki, Tatsuya [Kyoto University, Japan; Ozawa, Kazumi [ORNL; Katoh, Yutai [ORNL

    2014-01-01T23:59:59.000Z

    The irradiation creep behavior of nano-powder sintered silicon carbide was investigated using the bend stress relaxation method under neutron irradiation up to 1.9 dpa. The creep deformation was observed at all temperatures ranging from 380 to 1180 C mainly from the irradiation creep but with the increasing contributions from the thermal creep at higher temperatures. Microstructural observation and data analysis were performed.

  19. Superior model for fault tolerance computation in designing nano-sized circuit systems

    SciTech Connect (OSTI)

    Singh, N. S. S., E-mail: narinderjit@petronas.com.my; Muthuvalu, M. S., E-mail: msmuthuvalu@gmail.com [Fundamental and Applied Sciences Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak (Malaysia); Asirvadam, V. S., E-mail: vijanth-sagayan@petronas.com.my [Electrical and Electronics Engineering Department, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, Perak (Malaysia)

    2014-10-24T23:59:59.000Z

    As CMOS technology scales nano-metrically, reliability turns out to be a decisive subject in the design methodology of nano-sized circuit systems. As a result, several computational approaches have been developed to compute and evaluate reliability of desired nano-electronic circuits. The process of computing reliability becomes very troublesome and time consuming as the computational complexity build ups with the desired circuit size. Therefore, being able to measure reliability instantly and superiorly is fast becoming necessary in designing modern logic integrated circuits. For this purpose, the paper firstly looks into the development of an automated reliability evaluation tool based on the generalization of Probabilistic Gate Model (PGM) and Boolean Difference-based Error Calculator (BDEC) models. The Matlab-based tool allows users to significantly speed-up the task of reliability analysis for very large number of nano-electronic circuits. Secondly, by using the developed automated tool, the paper explores into a comparative study involving reliability computation and evaluation by PGM and, BDEC models for different implementations of same functionality circuits. Based on the reliability analysis, BDEC gives exact and transparent reliability measures, but as the complexity of the same functionality circuits with respect to gate error increases, reliability measure by BDEC tends to be lower than the reliability measure by PGM. The lesser reliability measure by BDEC is well explained in this paper using distribution of different signal input patterns overtime for same functionality circuits. Simulation results conclude that the reliability measure by BDEC depends not only on faulty gates but it also depends on circuit topology, probability of input signals being one or zero and also probability of error on signal lines.

  20. A Nano-Quantum Photonic Model for Justification of Dispersion in Single Crystal Film of NPP

    E-Print Network [OSTI]

    Hassan Kaatuzian; AliAkbar Wahedy Zarch

    2006-11-28T23:59:59.000Z

    In this paper, we present a nano-quantum photonic model for justification of normal dispersion in a thin crystal film of NPP. In this method, we assume a laser beam consists of a flow of energetic particles. By precise analyzing of photon interaction with pi-electron system of benzene ring in NPP crystal, we will attain refractive index (RI) in any wavelength and compare the results with experimental data.

  1. Efficient gas sensitivity in mixed bismuth ferrite micro (cubes) and nano (plates) structures

    SciTech Connect (OSTI)

    Waghmare, Shivaji D.; Jadhav, Vijaykumar V.; Gore, Shaym K. [Center for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, Maharashtra (India)] [Center for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, Maharashtra (India); Yoon, Seog-Joon; Ambade, Swapnil B. [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-1791 (Korea, Republic of)] [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-1791 (Korea, Republic of); Lokhande, B.J. [Department of Physics, Solapur University, Solapur (India)] [Department of Physics, Solapur University, Solapur (India); Mane, Rajaram S., E-mail: rsmane_2000@yahoo.com [Center for Nanomaterials and Energy Devices, School of Physical Sciences, Swami Ramanand Teerth Marathwada University, Nanded 431606, Maharashtra (India); Han, Sung-Hwan, E-mail: shhan@hanyang.ac.kr [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-1791 (Korea, Republic of)] [Inorganic Nanomaterials Laboratory, Department of Chemistry, Hanyang University, Seoul 133-1791 (Korea, Republic of)

    2012-12-15T23:59:59.000Z

    Graphical abstract: Display Omitted Highlights: ? Micro (cubes) structure embedded in nano (plates) of bismuth ferrite was prepared by a chemical method. ? These structures were characterized by XRD and SEM. ? LPG, CO{sub 2} and NH{sub 4} gases were exposed. ? Properties related to gas sensors were measured and reported. -- Abstract: Mixed micro (cubes) and nano (plates) structures of bismuth ferrite (BFO) have been synthesized by a simple and cost-effective wet-chemical method. Structural, morphological and phase confirmation characteristics are measured using X-ray diffraction, field-emission scanning electron microscopy (FE-SEM) and energy dispersive X-ray analysis techniques. The digital FE-SEM photo-images of BFO sample confirmed an incubation of discrete micro-cubes into thin and regularly placed large number of nano-plates. The bismuth ferrite, with mixed structures, films show considerable performance when used in liquefied petroleum (LPG), carbon dioxide (CO{sub 2}) and ammonium (NH{sub 3}) gas sensors application. Different chemical entities in LPG have made it more efficient with higher sensitivity, recovery and response times compared to CO{sub 2} and NH{sub 3} gases. Furthermore, effect of palladium surface treatment on the gas sensitivity and the charge transfer resistances of BFO mixed structures is investigated and reported.

  2. SeZnSb alloy and its nano tubes, graphene composites properties

    SciTech Connect (OSTI)

    Singh, Abhay Kumar [Department of Physics, Indian Institute of Physics, Bangalore-560012 (India)

    2013-04-15T23:59:59.000Z

    Composite can alter the individual element physical property, could be useful to define the specific use of the material. Therefore, work demonstrates the synthesis of a new composition Se{sub 96}-Zn{sub 2}-Sb{sub 2} and its composites with 0.05% multi-walled carbon nano tubes and 0.05% bilayer graphene, in the glassy form. The diffused amorphous structure of the multi walled carbon nano tubes and bilayer gaphene in the Se{sub 96}-Zn{sub 2}-Sb{sub 2} alloy have been analyzed by using the Raman, X-ray photoluminescence spectroscopy, Furrier transmission infrared spectra, photoluminescence, UV/visible absorption spectroscopic measurements. The diffused prime Raman bands (G and D) have been appeared for the multi walled carbon nano tubes and graphene composites, while the X-ray photoluminescence core energy levels peak shifts have been observed for the composite materials. Subsequently the photoluminescence property at room temperature and a drastic enhancement (upto 80%) in infrared transmission percentage has been obtained for the bilayer graphene composite, along with optical energy band gaps for these materials have been evaluated 1.37, 1.39 and 1.41 eV.

  3. Combined experimental and numerical evaluation of a prototype nano-PCM enhanced wallboard

    SciTech Connect (OSTI)

    Biswas, Kaushik [ORNL] [ORNL; LuPh.D., Jue [Technova Corporation; Soroushian, Parviz [Technova Corporation] [Technova Corporation; Shrestha, Som S [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    In the United States, forty-eight (48) percent of the residential end-use energy consumption is spent on space heating and air conditioning. Reducing envelope-generated heating and cooling loads through application of phase change material (PCM)-enhanced building envelopes can facilitate maximizing the energy efficiency of buildings. Combined experimental testing and numerical modeling of PCM-enhanced envelope components are two important aspects of the evaluation of their energy benefits. An innovative phase change material (nano-PCM) was developed with PCM encapsulated with expanded graphite (interconnected) nanosheets, which is highly conductive for enhanced thermal storage and energy distribution, and is shape-stable for convenient incorporation into lightweight building components. A wall with cellulose cavity insulation and prototype PCM-enhanced interior wallboards was built and tested in a natural exposure test (NET) facility in a hot-humid climate location. The test wall contained PCM wallboards and regular gypsum wallboard, for a side-by-side annual comparison study. Further, numerical modeling of the walls containing the nano-PCM wallboard was performed to determine its actual impact on wall-generated heating and cooling loads. The model was first validated using experimental data, and then used for annual simulations using Typical Meteorological Year (TMY3) weather data. This article presents the measured performance and numerical analysis evaluating the energy-saving potential of the nano-PCM-enhanced wallboard.

  4. Effect of morphology and solvent on two-photon absorption of nano zinc oxide

    SciTech Connect (OSTI)

    Kavitha, M.K. [Department of Chemistry, Indian Institute of Space Science and Technology, Valiamala, Thiruvananthapuram 695547, Kerala (India); Haripadmam, P.C.; Gopinath, Pramod; Krishnan, Bindu [Department of Physics, Indian Institute of Space Science and Technology, Valiamala, Thiruvananthapuram 695547, Kerala (India); John, Honey, E-mail: honey@iist.ac.in [Department of Chemistry, Indian Institute of Space Science and Technology, Valiamala, Thiruvananthapuram 695547, Kerala (India)

    2013-05-15T23:59:59.000Z

    Highlights: ? ZnO nanospheres and triangular structures synthesis by novel precipitation technique. ? The effect of precursor concentration on the size and shape of nano ZnO. ? Open aperture Z-scan measurements of the ZnO nanoparticle dispersions. ? Nanospheres exhibit higher two photon absorption coefficient than triangular nanostructures. ? Nanospheres dispersed in water exhibit higher two photon absorption coefficient than its dispersion in 2-propanol. - Abstract: In this paper, we report the effect of morphology and solvent on the two-photon absorption of nano zinc oxide. Zinc oxide nanoparticles in two different morphologies like nanospheres and triangular nanostructures are synthesized by novel precipitation technique and their two-photon absorption coefficient is measured using open aperture Z-scan technique. Experimental results show that the zinc oxide nanospheres exhibit higher two-photon absorption coefficient than the zinc oxide triangular nanostructures. The zinc oxide nanospheres dispersed in water exhibit higher two-photon absorption coefficient than that of its dispersion in 2-propanol. The zinc oxide nanospheres dispersed in water shows a decrease in two-photon absorption coefficient with an increase in on-axis irradiance. The result confirms the dependence of shape and solvent on the two-photon absorption of nano zinc oxide.

  5. Non-precious Co3O4 nano-rod electrocatalyst for oxygen reduction reaction in anion-exchange membrane fuel cells

    E-Print Network [OSTI]

    Zhao, Tianshou

    Non-precious Co3O4 nano-rod electrocatalyst for oxygen reduction reaction in anion 2011 DOI: 10.1039/c1ee01431e We report preparation of carbon-supported Co3O4 electrocatalysts with nano that the non-precious Co3O4 electrocatalyst with the nano-rod structure ($12 nm in length and $5.1 nm

  6. NOVEL PREPARATION AND MAGNETO CHEMICAL CHARACTERIZATION OF NANO-PARTICLE MIXED ALCOHOL CATALYSTS

    SciTech Connect (OSTI)

    Setala V. Naidu

    2003-01-01T23:59:59.000Z

    We have produced Co, Cu, and Fe nano-particles by Laser-induced solution deposition (LISD) as evidenced by TEM investigations. Sizes of the nano-particles created are in the order of 5 nm. The LISD system could generate nano-particles in quantities only in the order of a milligram. This may be mainly due to the limited photo induced reactions taking place on the surface of the solutions. We have designed experiments to use drop flow technique with LISD for nano-particle deposition on microreactors. Preliminary work has been done on Co and Fe thin film deposited microreactors. We are also investigating the catalytic properties of nano-particles of FeO and CoO prepared by ball milling and dispersed into sol-gel prepared alumina granules. We have continued our investigation of catalytic reactions of Cu, Co, Fe, Cu/Co, Cu/Fe and Co/Fe on alumina support. The metal oxides were first reduced with hydrogen and used for the conversion of CO/H{sub 2}. The surface area of the catalysts has been determined by nitrogen disorption. They are in the range of 200-300 m{sup 2}/g. Cu, Co, Fe, Co/Fe, Cu/Co and Cu/Fe showed increasing order of catalytic activity for CO/H{sub 2} conversion. We are also studying catalytic conversion rates for CO{sub 2}/H{sub 2} and CO/CO{sub 2}/H{sub 2} mixtures using these catalysts. Our investigations of Co and Fe thin film deposited microreactors showed higher CO/H{sub 2} conversion for Fe compared to Co. We have used vibrating sample magnetometer (VSM) to study the magnetic characteristics of as prepared, reduced, post-reaction catalysts. Comparative study of the ferromagnetic component of these samples gives the reduction efficiency and the changes in metal centers during catalytic reactions. Magnetic studies of post-reaction Co and Fe micro-reactors show that more carbide formation occurs for iron compared to cobalt.

  7. FINAL REPORT: Room Temperature Hydrogen Storage in Nano-Confined Liquids

    SciTech Connect (OSTI)

    VAJO, JOHN

    2014-06-12T23:59:59.000Z

    DOE continues to seek solid-state hydrogen storage materials with hydrogen densities of ?6 wt% and ?50 g/L that can deliver hydrogen and be recharged at room temperature and moderate pressures enabling widespread use in transportation applications. Meanwhile, development including vehicle engineering and delivery infrastructure continues for compressed-gas hydrogen storage systems. Although compressed gas storage avoids the materials-based issues associated with solid-state storage, achieving acceptable volumetric densities has been a persistent challenge. This project examined the possibility of developing storage materials that would be compatible with compressed gas storage technology based on enhanced hydrogen solubility in nano-confined liquid solvents. These materials would store hydrogen in molecular form eliminating many limitations of current solid-state materials while increasing the volumetric capacity of compressed hydrogen storage vessels. Experimental methods were developed to study hydrogen solubility in nano-confined liquids. These methods included 1) fabrication of composites comprised of volatile liquid solvents for hydrogen confined within the nano-sized pore volume of nanoporous scaffolds and 2) measuring the hydrogen uptake capacity of these composites without altering the composite composition. The hydrogen storage capacities of these nano-confined solvent/scaffold composites were compared with bulk solvents and with empty scaffolds. The solvents and scaffolds were varied to optimize the enhancement in hydrogen solubility that accompanies confinement of the solvent. In addition, computational simulations were performed to study the molecular-scale structure of liquid solvent when confined within an atomically realistic nano-sized pore of a model scaffold. Confined solvent was compared with similar simulations of bulk solvent. The results from the simulations were used to formulate a mechanism for the enhanced solubility and to guide the experiments. Overall, the combined experimental measurements and simulations indicate that hydrogen storage based on enhanced solubility in nano-confined liquids is unlikely to meet the storage densities required for practical use. Only low gravimetric capacities of < 0.5 wt% were achieved. More importantly, solvent filled scaffolds had lower volumetric capacities than corresponding empty scaffolds. Nevertheless, several of the composites measured did show significant (>~ 5x) enhanced hydrogen solubility relative to bulk solvent solubility, when the hydrogen capacity was attributed only to dissolution in the confined solvent. However, when the hydrogen capacity was compared to an empty scaffold that is known to store hydrogen by surface adsorption on the scaffold walls, including the solvent always reduced the hydrogen capacity. For the best composites, this reduction relative to an empty scaffold was ~30%; for the worst it was ~90%. The highest capacities were obtained with the largest solvent molecules and with scaffolds containing 3- dimensionally confined pore geometries. The simulations suggested that the capacity of the composites originated from hydrogen adsorption on the scaffold pore walls at sites not occupied by solvent molecules. Although liquid solvent filled the pores, not all of the adsorption sites on the pore walls were occupied due to restricted motion of the solvent molecules within the confined pore space.

  8. Published: September 14, 2011 r 2011 American Chemical Society 4462 dx.doi.org/10.1021/nl2027684 |Nano Lett. 2011, 11, 44624467

    E-Print Network [OSTI]

    Cui, Yi

    |Nano Lett. 2011, 11, 4462­4467 LETTER pubs.acs.org/NanoLett Hollow Carbon Nanofiber-Encapsulated Sulfur presents a significant challenge for practical applications. Here we report a hollow carbon nanofi- ber capacity and excellent electrochemical cycling of the cells. The hollow carbon nanofiber arrays were

  9. [29] M. Hartig, L. F. Chi, X. D. Liu, H. Fuchs, Thin Solid Films 1998, 327, 262. [30] G. Schmid, Y. Liu, Nano Lett. 2001, 1, 405.

    E-Print Network [OSTI]

    Polman, Albert

    . Liu, Nano Lett. 2001, 1, 405. [31] V. Torma, T. Reuter, O. Vidoni, M. Schumann, C. Radehaus, G. Schmid. Schumann, T. Raschke, C. Radehaus, G. Schmid, Nano Lett. 2001, 8, 405. [34] D. Wyrwa, N. Beyer, G. Schmid the optical properties, mainly the surface plasmon resonance absorption of such composites has been studied.[8

  10. Optimizing Cr(VI) and Tc(VII) remediation through nano-scale biomineral engineering

    SciTech Connect (OSTI)

    Cutting, R. S.; Coker, V. S.; Telling, N. D.; Kimber, R. L.; Pearce, C. I.; Ellis, B.; Lawson, R; van der Laan, G.; Pattrick, R.A.D.; Vaughan, D.J.; Arenholz, E.; Lloyd, J. R.

    2009-09-09T23:59:59.000Z

    To optimize the production of biomagnetite for the bioremediation of metal oxyanion contaminated waters, the reduction of aqueous Cr(VI) to Cr(III) by two biogenic magnetites and a synthetic magnetite was evaluated under batch and continuous flow conditions. Results indicate that nano-scale biogenic magnetite produced by incubating synthetic schwertmannite powder in cell suspensions of Geobacter sulfurreducens is more efficient at reducing Cr(VI) than either biogenic nano-magnetite produced from a suspension of ferrihydrite 'gel' or synthetic nano-scale Fe{sub 3}O{sub 4} powder. Although X-ray Photoelectron Spectroscopy (XPS) measurements obtained from post-exposure magnetite samples reveal that both Cr(III) and Cr(VI) are associated with nanoparticle surfaces, X-ray Magnetic Circular Dichroism (XMCD) studies indicate that some Cr(III) has replaced octahedrally coordinated Fe in the lattice of the magnetite. Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) measurements of total aqueous Cr in the associated solution phase indicated that, although the majority of Cr(III) was incorporated within or adsorbed to the magnetite samples, a proportion ({approx}10-15 %) was released back into solution. Studies of Tc(VII) uptake by magnetites produced via the different synthesis routes also revealed significant differences between them as regards effectiveness for remediation. In addition, column studies using a {gamma}-camera to obtain real time images of a {sup 99m}Tc(VII) radiotracer were performed to visualize directly the relative performances of the magnetite sorbents against ultra-trace concentrations of metal oxyanion contaminants. Again, the magnetite produced from schwertmannite proved capable of retaining more ({approx}20%) {sup 99m}Tc(VII) than the magnetite produced from ferrihydrite, confirming that biomagnetite production for efficient environmental remediation can be fine-tuned through careful selection of the initial Fe(III) mineral substrate supplied to Fe(III)-reducing bacteria.

  11. Fully Automated Laser Ablation Liquid Capture Sample Analysis using NanoElectrospray Ionization Mass Spectrometry

    SciTech Connect (OSTI)

    Lorenz, Matthias [ORNL] [ORNL; Ovchinnikova, Olga S [ORNL] [ORNL; Van Berkel, Gary J [ORNL] [ORNL

    2014-01-01T23:59:59.000Z

    RATIONALE: Laser ablation provides for the possibility of sampling a large variety of surfaces with high spatial resolution. This type of sampling when employed in conjunction with liquid capture followed by nanoelectrospray ionization provides the opportunity for sensitive and prolonged interrogation of samples by mass spectrometry as well as the ability to analyze surfaces not amenable to direct liquid extraction. METHODS: A fully automated, reflection geometry, laser ablation liquid capture spot sampling system was achieved by incorporating appropriate laser fiber optics and a focusing lens into a commercially available, liquid extraction surface analysis (LESA ) ready Advion TriVersa NanoMate system. RESULTS: Under optimized conditions about 10% of laser ablated material could be captured in a droplet positioned vertically over the ablation region using the NanoMate robot controlled pipette. The sampling spot size area with this laser ablation liquid capture surface analysis (LA/LCSA) mode of operation (typically about 120 m x 160 m) was approximately 50 times smaller than that achievable by direct liquid extraction using LESA (ca. 1 mm diameter liquid extraction spot). The set-up was successfully applied for the analysis of ink on glass and paper as well as the endogenous components in Alstroemeria Yellow King flower petals. In a second mode of operation with a comparable sampling spot size, termed laser ablation/LESA , the laser system was used to drill through, penetrate, or otherwise expose material beneath a solvent resistant surface. Once drilled, LESA was effective in sampling soluble material exposed at that location on the surface. CONCLUSIONS: Incorporating the capability for different laser ablation liquid capture spot sampling modes of operation into a LESA ready Advion TriVersa NanoMate enhanced the spot sampling spatial resolution of this device and broadened the surface types amenable to analysis to include absorbent and solvent resistant materials.

  12. Development of 3-D magnetic nano-arrays by electrodeposition into mesoporous silica.

    SciTech Connect (OSTI)

    Campbell, R.; Manning, J.; Bakker, M.G.; Li, X.; Lee, D.R.; Wang, J.; X-Ray Science Division; Univ. of Alabama

    2006-01-01T23:59:59.000Z

    The development of periodic nanostructures fabricated by self-assembly of surfactants and block co-polymers has opened up the possibility of generating periodic magnetic nanostructures of types not accessible by self-assembly of nano-particles. The fabrication of mesoporous silica thin films around self-assembled block co-polymers is well established. Common structures for such films are SBA-15 which consists of hexagonal arrays of cylindrical pores and SBA-16 which has face centered arrays of spherical voids. These pores are connected by 1-2 nm thick flaws in the continuous silica phase producing an effectively continuous porous phase. After removal of the block co-polymer template, electrodeposition into the mesoporous silica thin films produces arrays of 5-10 nm diameter nano-wires and nano-particles. We have demonstrated that such materials can be fabricated on a wide range of metal substrates. Characterization by Scanning Electron Microscopies shows that the mesoporous silica is well ordered over micron scale areas. Grazing Incidence Small Angle X-ray Scattering (GISAXS) studies shows diffraction spots, consistent with the entire film being well ordered. GISAXS also shows that the mesoporous silica films survive removal of the template and electrodeposition of nickel and cobalt into the mesoporous silica films. Such films are of interest for their magnetic properties, as the nanophase and scale can be independently varied. Further, the presence of nanowires inside an insulator suggests that these films might also be of interest as the current confining element for Confined Current Path-Current Perpendicular to Plane GMR sensors.

  13. Statistics of the Coulomb-blockade peak spacings of a silicon quantum dot Center for NanoScience and Sektion Physik, LMU Munchen, Geschwister-Scholl-Platz 1, D-80539 Munchen, Germany

    E-Print Network [OSTI]

    Ludwig-Maximilians-Universität, München

    Statistics of the Coulomb-blockade peak spacings of a silicon quantum dot F. Simmel Center for NanoScience-Magder* Center for NanoScience and Sektion Physik, LMU Mu¨nchen, Geschwister-Scholl-Platz 1, D-80539 Mu, Cambridge, Massachusetts 02139 J. P. Kotthaus Center for NanoScience and Sektion Physik, LMU Mu

  14. Facile synthesis of hollow nano-spheres and hemispheres of cobalt by polyol reduction This article has been downloaded from IOPscience. Please scroll down to see the full text article.

    E-Print Network [OSTI]

    Gao, Hongjun

    Facile synthesis of hollow nano-spheres and hemispheres of cobalt by polyol reduction This article.1088/0957-4484/21/37/375602 Facile synthesis of hollow nano-spheres and hemispheres of cobalt by polyol reduction Haitao Yang1 2010 Published 17 August 2010 Online at stacks.iop.org/Nano/21/375602 Abstract The hydrophilic hollow

  15. 3M-NANO is the annual International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale, which will be held for the second time in Xi'an, China.

    E-Print Network [OSTI]

    Appelrath, Hans-Jürgen

    3M-NANO is the annual International Conference on Manipulation, Manufacturing and Measurement of application. Scientists working in research fields related to 3M-NANO topics are invited to submit papers. All will be recommended for publication in the Journal of Micro-Nano Mechatronics, Int. J of Nanomanufacturing, Int. J

  16. 3M-NANO is the annual International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale, which will be held for the third time in Suzhou, China. The

    E-Print Network [OSTI]

    Appelrath, Hans-Jürgen

    3M-NANO is the annual International Conference on Manipulation, Manufacturing and Measurement. Scientists working in research fields related to 3M-NANO topics are now invited to submit Late News Papers Nanofabrication processes and systems Control issues in nanohandling Process automation on the nanoscale Micro-to-nano

  17. Micro-nano scale ripples on metallic glass induced by laser pulse

    SciTech Connect (OSTI)

    Liu, W. D.; Ye, L. M. [LTCS and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871 (China); Liu, K. X. [LTCS and Department of Mechanics and Aerospace Engineering, College of Engineering, Peking University, Beijing 100871 (China); Center for Applied Physics and Technology, Peking University, Beijing 100871 (China)

    2011-02-15T23:59:59.000Z

    A Zr{sub 47.7}Cu{sub 31}Ni{sub 9}Al{sub 12.3} bulk metallic glass was irradiated directly by KrF excimer laser pulses with wavelength 248 nm and duration 10 ns. Scanning electronic microscope photographs indicated that many ripples in micro-nano scale would be generated on the edge of the irradiated area under the action of the higher intensity laser pulse. Detailed observation demonstrated that the ripples exhibited fluidity and became closer and closer out from interior. Theoretical analysis revealed the formation mechanism of the ripples, including melting, subsequent propagation of capillary waves and final solidification.

  18. Nanotrend : studying nano-districts gives a new view on nanoscience

    E-Print Network [OSTI]

    Genet, Corine

    2009-01-01T23:59:59.000Z

    The emergence of districts in nanotechnology represents a new pattern of scientific development. The factors affecting their growth are analysed to understand the drivers of economic development. By analyzing the top 200 nano-districts, Nanotrendchart sheds light on the clusterization process: academic production is seen to be highly concentrated, with fifteen districts representing over half of published articles; Asian districts are clearly growing significantly faster than those elsewhere; and district growth in the domain of engineering and physics is more rapid than in other disciplines. Scientific diversity, actors diversity as well as the degree of openness of the cluster influence their evolution. Highly specialised clusters witness lower growth rates

  19. Nano-optical observation of cascade switching in a parallel superconducting nanowire single photon detector

    SciTech Connect (OSTI)

    Heath, Robert M., E-mail: r.heath.1@research.gla.ac.uk; Tanner, Michael G.; Casaburi, Alessandro; Hadfield, Robert H. [School of Engineering, University of Glasgow, Glasgow G12 8LT, Scotland (United Kingdom); Webster, Mark G. [Department of Statistics, University of Leeds, Leeds LS2 9JT (United Kingdom); San Emeterio Alvarez, Lara; Jiang, Weitao; Barber, Zoe H. [Department of Materials Science and Metallurgy, University of Cambridge, Cambridge CB3 0FS (United Kingdom); Warburton, Richard J. [Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel (Switzerland)

    2014-02-10T23:59:59.000Z

    The device physics of parallel-wire superconducting nanowire single photon detectors is based on a cascade process. Using nano-optical techniques and a parallel wire device with spatially separate pixels, we explicitly demonstrate the single- and multi-photon triggering regimes. We develop a model for describing efficiency of a detector operating in the arm-trigger regime. We investigate the timing response of the detector when illuminating a single pixel and two pixels. We see a change in the active area of the detector between the two regimes and find the two-pixel trigger regime to have a faster timing response than the one-pixel regime.

  20. Nano-electron beam induced current and hole charge dynamics through uncapped Ge nanocrystals

    SciTech Connect (OSTI)

    Marchand, A.; El Hdiy, A.; Troyon, M. [Laboratoire de Recherche en Nanosciences, Bat. 6, case no 15, UFR Sciences, Universite de Reims Champagne Ardenne, 51687 Reims Cedex 2 (France); Amiard, G.; Ronda, A.; Berbezier, I. [IM2NP, Faculte des Sciences et Techniques, Campus de Saint Jerome - Case 142, Avenue Escadrille Normandie Niemen, 13397 Marseille Cedex 20 (France)

    2012-04-16T23:59:59.000Z

    Dynamics of hole storage in spherical Ge nanocrystals (NCs) formed by a two step dewetting/nucleation process on an oxide layer grown on an n-doped <001> silicon substrate is studied using a nano-electron beam induced current technique. Carrier generation is produced by an electron beam irradiation. The generated current is collected by an atomic force microscope--tip in contact mode at a fixed position away from the beam spot of about 0.5 {mu}m. This distance represents the effective diffusion length of holes. The time constants of holes charging are determined and the effect of the NC size is underlined.

  1. Failure by fracture and fatigue in 'NANO' and 'BIO'materials

    SciTech Connect (OSTI)

    Ritchie, R.O.; Muhlstein, C.L.; Nalla, R.K.

    2003-12-19T23:59:59.000Z

    The behavior of nanostructured materials/small-volumestructures and biologi-cal/bio-implantable materials, so-called "nano"and "bio" materials, is currently much in vogue in materials science. Oneaspect of this field, which to date has received only limited attention,is their fracture and fatigue properties. In this paper, we examine twotopics in this area, namely the premature fatigue failure ofsilicon-based micron-scale structures for microelectromechanical systems(MEMS), and the fracture properties of mineralized tissue, specificallyhuman bone.

  2. Research and development of RHIC injection kicker upgrade with nano second FID pulse generator

    SciTech Connect (OSTI)

    Zhang W.; Sandberg, J.; Hahn, H.; Fischer, W.; Liaw, C.J.; Pai, C.; Tuozzolo, J.

    2012-05-20T23:59:59.000Z

    Our recent effort to test a 50 kV, 1 kA, 50 ns pulse width, 10 ns pulse rise time FID pulse generator with a 250 ft transmission cable, resistive load, and existing RHIC injection kicker magnet has produced unparalleled results. This is the very first attempt to drive a high strength fast kicker magnet with a nano second high pulsed power (50 MVA) generator for large accelerator and colliders. The technology is impressive. We report here the result and future plan of RHIC Injection kicker upgrade.

  3. Nano sized Powder of Jackfruit Seed: Spectroscopic and Anti-microbial Investigative Approach

    E-Print Network [OSTI]

    T. Theivasanthi; G. Venkadamanickam; M. Palanivelu; M. Alagar

    2011-11-03T23:59:59.000Z

    This work reports aspect related to nano-sized particles of jackfruit seed. FTIR spectrum was recorded for functional groups analysis and EDAX analysis was done to identify the various elements of the sample. Both FTIR and EDAX analysis results indicated the presence of Starch. FTIR analysis confirmed the availability of anti-microbial Sulphur derivatives compounds. Microbiology assay found that jackfruit seed nanoparticles were effective against Escherichia coli and Bacillus megaterium bacteria. This work also investigated about the dual-function of the sample i.e. food ingredients possessing antimicrobial activities. Specific surface area of bacteria analysis revealed that it played a major role while on reactions with jackfruit seed nanoparticles.

  4. Theory of Electro-optic Modulation via a Quantum Dot Coupled to a Nano-resonator

    E-Print Network [OSTI]

    Arka Majumdar; Nicolas Manquest; Andrei Faraon; Jelena Vuckovic

    2009-11-27T23:59:59.000Z

    In this paper, we analyze the performance of an electro-optic modulator based on a single quantum dot strongly coupled to a nano-resonator, where electrical control of the quantum dot frequency is achieved via quantum confined Stark effect. Using realistic system parameters, we show that modulation speeds of a few tens of GHz are achievable with this system, while the energy per switching operation can be as small as 0.5 fJ. In addition, we study the non-linear distortion, and the effect of pure quantum dot dephasing on the performance of the modulator.

  5. Nano-porosity in GaSb induced by swift heavy ion irradiation

    SciTech Connect (OSTI)

    Kluth, P., E-mail: patrick.kluth@anu.edu.au; Schnohr, C. S.; Giulian, R.; Araujo, L. L.; Lei, W.; Rodriguez, M. D.; Afra, B.; Bierschenk, T.; Ridgway, M. C. [Department of Electronic Materials Engineering, Research School of Physics and Engineering, Australian National University, Canberra, Australian Capital Territory 0200 (Australia); Sullivan, J.; Weed, R. [ARC Centre for Antimatter-Matter Studies, AMPL, Research School of Physics and Engineering, Australian National University, Canberra, Australian Capital Territory 0200 (Australia); Li, W.; Ewing, R. C. [Department of Earth and Environmental Sciences, University of Michigan, Ann Arbor, Michigan 48109-1005 (United States)

    2014-01-13T23:59:59.000Z

    Nano-porous structures form in GaSb after ion irradiation with 185 MeV Au ions. The porous layer formation is governed by the dominant electronic energy loss at this energy regime. The porous layer morphology differs significantly from that previously reported for low-energy, ion-irradiated GaSb. Prior to the onset of porosity, positron annihilation lifetime spectroscopy indicates the formation of small vacancy clusters in single ion impacts, while transmission electron microscopy reveals fragmentation of the GaSb into nanocrystallites embedded in an amorphous matrix. Following this fragmentation process, macroscopic porosity forms, presumably within the amorphous phase.

  6. A Nano Surface Icephobic Coating Delays Ice Formation | GE Global Research

    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:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May JunDatastreamsmmcrcalgovInstrumentsrucLasDelivered‰PNGExperience hands-onASTROPHYSICSHe β-Research andAFishing forAA Month toNano

  7. Nano- and microscale particles and global electromagnetic resonances in the Earth-ionosphere cavity

    SciTech Connect (OSTI)

    Besedina, Yu. N.; Popel, S. I. [Russian Academy of Sciences, Institute of Geosphere Dynamics (Russian Federation)

    2007-02-15T23:59:59.000Z

    The influence of nano-and microscale particles (dust grains) on the global electromagnetic (Schumann) cavity has been studied in the context of two possible mechanisms. First, the presence of charged microscale particles in the ionospheric plasma modifies the dispersion properties of the upper boundary of the Schumann cavity and, thus, affects its eigenfrequencies and quality factor. Second, there is a relation between the dust concentration in the atmosphere and lightning discharges, which excite Schumann resonances. Therefore, dust grains can enhance the energy pumping of the cavity, thereby increasing the amplitude of electromagnetic oscillations in it.

  8. In situ formation of sintered cordieritemullite nanomicro composites by utilizing of waste silica fume

    SciTech Connect (OSTI)

    Khattab, R.M.; EL-Rafei, A.M. [Refractories, Ceramics and Building Materials Dept., National Research Center, 12622 Dokki, Cairo (Egypt)] [Refractories, Ceramics and Building Materials Dept., National Research Center, 12622 Dokki, Cairo (Egypt); Zawrah, M.F., E-mail: mzawrah@hotmail.com [Refractories, Ceramics and Building Materials Dept., National Research Center, 12622 Dokki, Cairo (Egypt)

    2012-09-15T23:59:59.000Z

    Highlights: ? We succeeded to obtain in situ formed sintered cordieritemullite nanomacro composites from waste and pure materials at 1400 C. ? Their sinterability was greatly dependent on both firing temperature and composition. ? XRD patterns showed that the optimum temperature required for formation of sintered cordieritemullite nanomacro composites was achieved at 1400 C. ? The batch containing 70 wt.% cordierite and 30 wt.% mullite exhibited the best properties. ? Microstructures of the densified composites were composed of nanomacro cordieritemullite structures. -- Abstract: This study aims at in situ formation of sintered cordieritemullite nanomacro composites having high technological properties using waste silica fume, calcined ball clay, calcined alumina, and magnesia as starting materials. The starting materials were mixed in different ratios to obtain different cordieritemullite composite batches in which the cordierite contents ranged from 50 to 100 wt.%. The batches were uni-axially pressed at 100 MPa and sintered at 1350, 1400 and 1450 C to select the optimum temperature required for cordieritemullite nanomacro composites formation. The formed phases were identified by X-ray diffraction (XRD) pattern. The sintering parameters in terms of bulk density (BD) and apparent porosity (AP) were determined. The microstructure of composites has been investigated by scanning electron microscope (SEM). Cold crushing strength (CCS) of the sintered batches was evaluated. The result revealed that the cordieritemullite nanomacro composites were in-situ formed at 1400 C. The batch containing 70 wt.% cordierite showed good physical and mechanical properties.

  9. RE/ZrO{sub 2} (RE = Sm, Eu) composite oxide nano-materials: Synthesis and applications in photocatalysis

    SciTech Connect (OSTI)

    Du, Weimin, E-mail: duweimin75@gmail.com [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455002 (China); Zhu, Zhaoqiang [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455002 (China); College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou, Henan 450001 (China); Zhang, Xiaofen; Wang, Dacheng; Liu, Donghe [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455002 (China); Qian, Xuefeng [School of Chemistry and Chemical Technology, Shanghai Jiao Tong University, Shanghai 200240 (China); Du, Jimin, E-mail: djm@aynu.edu.cn [College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang, Henan 455002 (China)

    2013-10-15T23:59:59.000Z

    Graphical abstract: - Highlights: RE/ZrO{sub 2} (RE = Sm, Eu) nano-materials have been successfully synthesized. Defect and electron structures determine the absorption properties on visible light. Nano-sized Zr{sub 0.8}Sm{sub 0.2}O{sub 2??} has good visible-light-responsive photocatalytic activities. In the future, it can be used in wastewater treatment and environmental protection. - Abstract: Zirconia modified by Samarium/Europium, RE/ZrO{sub 2} (RE = Sm, Eu), composite oxide nano-materials have been successfully synthesized by improved solgel method. Characterization results show that X-ray diffraction (XRD) peaks of products gradually shift to the lower angle with the increase of rare earth which implies that the lattice distances of RE/ZrO{sub 2} nano-materials are gradually enlarged. Moreover, the molar ratios between zirconium and rare earth are consistent with the chemical formula and both of them are uniformly distributed in samples. Optical properties indicate that defect structures and electron configurations of RE/ZrO{sub 2} (RE = Sm, Eu) with single phase determine their absorption properties on visible light. Photocatalytic experiments indicate Zr{sub 0.8}Sm{sub 0.2}O{sub 2??} nano-crystals have excellent visible-light-responsive photocatalytic activities on Methylene blue and Rhodamine B which results from the special defect structure, suitable electronic configuration, and larger specific surface area. It follows that Zr{sub 0.8}Sm{sub 0.2}O{sub 2??} nano-crystals are new visible-light-responsive photocatalysts which can be applied in dye wastewater treatment and environmental protection in the future.

  10. Using Synchrotron X-Ray Nano-CT to Characterize SOFC Electrode Microstructures in Three-Dimensions at Operating Temperature

    SciTech Connect (OSTI)

    Shearing, P.R.; Bradley, R.S.; Gelb, J.; Lee, S.N.; Atkinson, A.; Withers, P.J.; Brandon, N.P. (Manchester); (Xradia); (ICL)

    2012-01-20T23:59:59.000Z

    In recent years, developments in tomography tools have provided unprecedented insight into the microstructure of electrodes for solid oxide fuel cells, enabling researchers to establish direct links between electrode microstructure and electrochemical performance. Here we present results of high resolution, synchrotron X-ray nano computed tomography experiments, which have enabled microstructural characterisation of a mixed ionic electronic conducting lanthanum strontium cobalt iron oxide (LSCF) cathode with sub-50nm resolution at operating temperature. Using the uniquely non-destructive nano-CT platform, it is possible to characterise microstructural evolution processes associated with heating and operation in-situ.

  11. Photoactive transparent nano-crystalline glass-ceramic for remazole red dye degradation

    SciTech Connect (OSTI)

    Gad-Allah, Tarek A., E-mail: tareqabdelshafy@yahoo.ca [Water Pollution Research Department, National Research Centre, Cairo 12311 (Egypt); Margha, Fatma H. [Department of Glass Research, National Research Centre, Cairo 12311 (Egypt)] [Department of Glass Research, National Research Centre, Cairo 12311 (Egypt)

    2012-12-15T23:59:59.000Z

    Graphical abstract: Display Omitted Highlights: ? Preparation and characterization of novel transparent nanocrystalline glass-ceramic. ? Precipitation of photoactive phases by using controlled heat-treatment. ? Conservation of transparency along with photoactivity. ? Using the prepared nanocrystalline glass-ceramic in water purification. -- Abstract: Transparent glass ceramic material was prepared from alkali-borosilicate glass containing titania by proper heat treatment scheme. The prepared samples were characterized using differential thermal analysis, X-ray diffraction, transmission electron microscope, selected area electron diffraction and UVvisible spectroscopy. The applied heat treatment program allowed the crystallization of nano-crystalline anatase, rutile, barium titanate, titanium borate and silicate phases while maintaining the transparency. The precipitated nano-crystalline anatase and rutile phases were responsible for the observed high photocatalytic activity of the prepared samples. Samples of 24.29 and 32.39 TiO{sub 2} wt% showed better efficiency for the decolorization of remazole red dye compared with commercial-TiO{sub 2} used in preparation of glass-ceramic. The reuse of prepared glass-ceramic photocatalyst with nearly same efficiency for different times was also proved.

  12. Contributions to the Theory of Thermostated Systems II: Least Dissipation of Helmholtz Free Energy in Nano-Biology

    E-Print Network [OSTI]

    Ronald F. Fox

    2015-03-11T23:59:59.000Z

    In this paper, we develop further the theory of thermostated systems along the lines of our earlier paper. Two results are highlighted: 1) in the Markov limit of the contracted description, a least dissipation of Helmholtz free energy principle is established; and 2) a detailed account of the appropriateness of this principle for nano-biology, including the evolution of life, is presented.

  13. Subscriber access provided by CORNELL UNIV Nano Letters is published by the American Chemical Society. 1155 Sixteenth

    E-Print Network [OSTI]

    McEuen, Paul L.

    nanoelectrometers by mapping the local potential profile of a looped carbon nanotube (CNT). This new type of Nanoparticle Electrometers Attached to Carbon Nanotubes Jun Zhu, Markus Brink, and Paul L. McEuen Nano Lett Electrometers Attached to Carbon Nanotubes Jun Zhu,*,,,§ Markus Brink,,§, and Paul L. McEuen Laboratory

  14. Loading rate dependency of maximum nanoindentation depth in nano-grained NiTi shape memory alloy

    E-Print Network [OSTI]

    Sun, Qing-Ping

    of loading rate on nanoindentation depth for nano-grained polycrystalline superelastic (SE) NiTi SMA superelastic NiTi polycrystalline sheets were purchased from Memory Applications Inc. (USA). With X temperature (T=23 C). To avoid plastic deformation under the tip, two spherical diamond tips with radii of R

  15. Mechanochemical synthesis of tungsten carbide nano particles by using WO{sub 3}/Zn/C powder mixture

    SciTech Connect (OSTI)

    Hoseinpur, Arman, E-mail: arman.hoseinpur@stu-mail.um.ac.ir [Department of Materials and Metallurgical Engineering, Ferdowsi University of Mashhad, Mashhad 91775-1111, Islamic Republic of Iran (Iran, Islamic Republic of)] [Department of Materials and Metallurgical Engineering, Ferdowsi University of Mashhad, Mashhad 91775-1111, Islamic Republic of Iran (Iran, Islamic Republic of); Vahdati Khaki, Jalil; Marashi, Maryam Sadat [Department of Materials and Metallurgical Engineering, Ferdowsi University of Mashhad, Mashhad 91775-1111, Islamic Republic of Iran (Iran, Islamic Republic of)] [Department of Materials and Metallurgical Engineering, Ferdowsi University of Mashhad, Mashhad 91775-1111, Islamic Republic of Iran (Iran, Islamic Republic of)

    2013-02-15T23:59:59.000Z

    Graphical abstract: Display Omitted Highlights: ? Nano particles of WC are synthesized by mechanochemical process. ? Zn was used to reduce WO{sub 3}. ? By removing ZnO from the milling products with an acid leaching, WC will be the final products. ? XRD results showed that the reduction reactions were completed after 36 h. ? TEM and SEM images showed that the morphology of produced powder is nearly spherical like. -- Abstract: In this research we introduce a new, facile, and economical system for fabrication of tungsten carbide (WC) nano particle powder. In this system WO{sub 3}, Zn, and C have been ball-milled for several hours, which led to the synthesis of tungsten carbide nano particles. The synthesized WC can successfully be separated from the ball-milled product by subjecting the product powder to diluted HCl for removing ZnO and obtaining WC. X-ray diffraction (XRD) analysis indicates that the reduction of WO{sub 3} will be completed gradually by increasing milling time up to 36 h. Scanning electron microscope (SEM), and transmission electron microscope (TEM) images show that after 36 h of milling the particle size of the fabricated powder is nano metric (about 20 nm). Results have shown that this system can surmount some main problems occurred in previous similar WC synthesizing systems. For example carbothermic reduction reactions, which lead to the synthesis of W{sub 2}C instead of WC, would not be activated because in this system reactions take place gradually.

  16. Femtosecond laser fabrication of micro and nano-disks in single layer graphene using vortex Bessel beams

    E-Print Network [OSTI]

    Paris-Sud XI, Universit de

    Femtosecond laser fabrication of micro and nano-disks in single layer graphene using vortex Bessel deposition graphene on glass substrate using femtosecond laser ablation with vortex Bessel beams. The fabricated graphene disks with diameters ranging from 650 nm to 4 m were characterized by spatially resolved

  17. Microfluidics for Tissue and Cell Applications JST CREST, "Cell and Tissue Showcasing by Micro-Nano Integrated Devices" Project

    E-Print Network [OSTI]

    Tokyo, University of

    Microfluidics for Tissue and Cell Applications JST CREST, "Cell and Tissue Showcasing by Micro-Nano Integrated Devices" Project JST-VINNOVA/SSF SICP, "Microfluidic Cancer Diagnosis Platform" Project JST ERATO 2 : Prof. Shuichi Takayama (University of Michigan) "Microfluidic Tools to Model and Analyze

  18. Ultra-large bandwidth hollow-core guiding in all-silica Bragg fibers with nano-supports

    E-Print Network [OSTI]

    Huang, Yanyi

    Ultra-large bandwidth hollow-core guiding in all-silica Bragg fibers with nano-supports Guillaume 420, 650-653 (2002). 7. C. M. Smith et al., "Low-loss hollow-core silica/air photonic bandgap fibre yong@its.caltech.edu. Abstract: We demonstrate a new class of hollow-core Bragg fibers

  19. Malvern Zetasizer Nano ZS 1. The system must have temperature control using Peltier elements as standard, giving control

    E-Print Network [OSTI]

    Subramanian, Venkat

    Malvern Zetasizer Nano ZS General 1. The system must have temperature control using Peltier with an internally fitted 50mW 532nm laser. 5. A quartz flow cell must be available to enable use as a function of pH, conductivity or additive concentration. 10. The system must include a measurement cell

  20. Nano Res. 2012, 5(6): 412420412 Reshaping the Tips of ZnO Nanowires by Pulsed Laser

    E-Print Network [OSTI]

    Wang, Zhong L.

    Nano Res. 2012, 5(6): 412­420412 Reshaping the Tips of ZnO Nanowires by Pulsed Laser Irradiation to the body of the ZnO nanowire, and that the center of the sphere is hollow. The growth mechanism of the hollow ZnO nanospheres is proposed to involve laser-induced ZnO evaporation immediately followed by re

  1. DOI: 10.1002/adem.200700076 Novel Method for Synthesis of Nano-Materials: Combustion of Active

    E-Print Network [OSTI]

    Mukasyan, Alexander

    DOI: 10.1002/adem.200700076 Novel Method for Synthesis of Nano-Materials: Combustion of Active- and combustion synthesis. A combination of combustion and reactive solution approaches leads to so- called solution (aqueous) combustion synthesis (SCS) method.[1­3] Typically SCS involves a self-sustained reaction

  2. Contributions to the Theory of Thermostated Systems II: Least Dissipation of Helmholtz Free Energy in Nano-Biology

    E-Print Network [OSTI]

    Ronald F. Fox

    2015-03-12T23:59:59.000Z

    In this paper, we develop further the theory of thermostated systems along the lines of our earlier paper. Two results are highlighted: 1) in the Markov limit of the contracted description, a least dissipation of Helmholtz free energy principle is established; and 2) a detailed account of the appropriateness of this principle for nano-biology, including the evolution of life, is presented.

  3. Subscriber access provided by BOSTON UNIV Nano Letters is published by the American Chemical Society. 1155 Sixteenth

    E-Print Network [OSTI]

    , and Luca Dal Negro Nano Lett., 2008, 8 (8), 2423-2431· DOI: 10.1021/nl8013692 · Publication Date (Web): 23, 2008 ABSTRACT In this paper, we combine experimental dark-field scattering spectroscopy and accurate on the basis of coupled-dipole calculations.13­15 In this paper, we combine dark-field scattering spectroscopy and a

  4. NanoSIMS analysis and Auger electron spectroscopy of silicate and oxide stardust from the carbonaceous chondrite Acfer 094

    E-Print Network [OSTI]

    NanoSIMS analysis and Auger electron spectroscopy of silicate and oxide stardust from; available online 23 August 2009 Abstract We have detected 138 presolar silicate, 20 presolar oxide and three consist of Al-rich oxides (grossite and hibonite) attached to non-stoichiometric Si-rich silicates

  5. Ultraviolet photosensitivity of sulfur-doped micro- and nano-crystalline diamond

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

    Mendoza, Frank; Makarov, Vladimir; Hidalgo, Arturo; Weiner, Brad; Morell, Gerardo

    2011-06-06T23:59:59.000Z

    The room-temperature photosensitivity of sulfur-doped micro- (MCD), submicro- (SMCD) and nano- (NCD) crystalline diamond films synthesized by hot-filament chemical vapor deposition was studied. The structure and composition of these diamond materials were characterized by Raman spectroscopy, scanning electron microscopy and X-ray diffraction. The UV sensitivity and response time were studied for the three types of diamond materials using a steady state broad UV excitation source and two pulsed UV laser radiations. It was found that they have high sensitivity in the UV region, as high as 109 sec-1mV-1 range, linear response in a broad spectral range below 320 nm, photocurrents around ~10-5 A, and short response time better than 100 ns, which is independent of fluency intensity. A phenomenological model was applied to help understand the role of defects and dopant concentration on the materials photosensitivity.

  6. A general procedure for thermomechanical calibration of nano/micro-mechanical resonators

    SciTech Connect (OSTI)

    Hauer, B.D., E-mail: bhauer@ualberta.ca; Doolin, C.; Beach, K.S.D., E-mail: kbeach@ualberta.ca; Davis, J.P., E-mail: jdavis@ualberta.ca

    2013-12-15T23:59:59.000Z

    We describe a general procedure to calibrate the detection of a nano/micro-mechanical resonators displacement as it undergoes thermal Brownian motion. A brief introduction to the equations of motion for such a resonator is presented, followed by a detailed derivation of the corresponding power spectral density (PSD) function, which is identical in all situations aside from a system-dependent effective mass value. The effective masses for a number of different resonator geometries are determined using both finite element method (FEM) modeling and analytical calculations. -- Highlights: Model micro- and nanomechanical resonators displaced by their own thermal motion. Review the theoretical framework for describing thermomechanical systems. Present a recipe for measurement calibration on devices of arbitrary shape. Point out and correct inconsistencies in the existing literature. Provide an authoritative guide and reference for practitioners in this area.

  7. Ferromagnetic Resonance of Micro- and Nano-sized Hexagonal Ferrite Powders at Millimeter Waves

    SciTech Connect (OSTI)

    Korolev, Konstantin A.; McCloy, John S.; Afsar, Mohammed N.

    2012-02-22T23:59:59.000Z

    Complex magnetic permeability and dielectric permittivity of micro- and nano-sized powdered barium (BaFe{sub 12}O{sub 19}) and strontium (SrFe{sub 12}O{sub 19}) hexaferrites have been studied in a broadband millimeter wave frequency range (30-120 GHz). Transmittance measurements have been performed using a free space quasi-optical millimeter wave spectrometer, equipped with a set of high power backward wave oscillators. Real and imaginary parts of dielectric permittivity for both types of micro- and nanoferrites have been calculated using analysis of recorded high precision transmittance spectra. Frequency dependences of the magnetic permeability have been obtained from Schloemann's equation for partially magnetized ferrites. These materials show promise as tunable millimeter wave absorber, based on their size-dependent absorption.

  8. Model simulation and experiments of flow and mass transport through a nano-material gas filter

    SciTech Connect (OSTI)

    Yang, Xiaofan; Zheng, Zhongquan C.; Winecki, Slawomir; Eckels, Steve

    2013-11-01T23:59:59.000Z

    A computational model for evaluating the performance of nano-material packed-bed filters was developed. The porous effects of the momentum and mass transport within the filter bed were simulated. For the momentum transport, an extended Ergun-type model was employed and the energy loss (pressure drop) along the packed-bed was simulated and compared with measurement. For the mass transport, a bulk dsorption model was developed to study the adsorption process (breakthrough behavior). Various types of porous materials and gas flows were tested in the filter system where the mathematical models used in the porous substrate were implemented and validated by comparing with experimental data and analytical solutions under similar conditions. Good agreements were obtained between experiments and model predictions.

  9. Circuit model optimization of a nano split ring resonator dimer antenna operating in infrared spectral range

    SciTech Connect (OSTI)

    Gneiding, N., E-mail: Natalia.Gneiding@physik.uni-erlangen.de [Erlangen Graduate School in Advanced Optical Technologies (SAOT), University of Erlangen-Nuremberg, 91052 Erlangen (Germany); Zhuromskyy, O.; Peschel, U. [Institute of Optics, Information and Photonics, University of Erlangen-Nuremberg, 91058 Erlangen (Germany); Shamonina, E. [Department of Engineering Science, University of Oxford, Parks Road, OX1 3PJ Oxford (United Kingdom)

    2014-10-28T23:59:59.000Z

    Metamaterials are comprised of metallic structures with a strong response to incident electromagnetic radiation, like, for example, split ring resonators. The interaction of resonator ensembles with electromagnetic waves can be simulated with finite difference or finite elements algorithms, however, above a certain ensemble size simulations become inadmissibly time or memory consuming. Alternatively a circuit description of metamaterials, a well developed modelling tool at radio and microwave frequencies, allows to significantly increase the simulated ensemble size. This approach can be extended to the IR spectral range with an appropriate set of circuit element parameters accounting for physical effects such as electron inertia and finite conductivity. The model is verified by comparing the coupling coefficients with the ones obtained from the full wave numerical simulations, and used to optimize the nano-antenna design with improved radiation characteristics.

  10. Nano-sized Lithium Manganese Oxide Dispersed on Carbon Nanotubes for Energy Storage Applications

    SciTech Connect (OSTI)

    Bak, S.B.

    2009-08-01T23:59:59.000Z

    Nano-sized lithium manganese oxide (LMO) dispersed on carbon nanotubes (CNT) has been synthesized successfully via a microwave-assisted hydrothermal reaction at 200 C for 30 min using MnO{sub 2}-coated CNT and an aqueous LiOH solution. The initial specific capacity is 99.4 mAh/g at a 1.6 C-rate, and is maintained at 99.1 mAh/g even at a 16 C-rate. The initial specific capacity is also maintained up to the 50th cycle to give 97% capacity retention. The LMO/CNT nanocomposite shows excellent power performance and good structural reversibility as an electrode material in energy storage systems, such as lithium-ion batteries and electrochemical capacitors. This synthetic strategy opens a new avenue for the effective and facile synthesis of lithium transition metal oxide/CNT nanocomposite.

  11. Key components for nano-assembled plasmon-excited single molecule non-linear devices

    E-Print Network [OSTI]

    Kewes, Gnter; Mazzamuto, Giacomo; Neitzke, Oliver; Schnfeld, Rolf-Simon; Schell, Andreas W; Probst, Jrgen; Wolters, Janik; Lchel, Bernd; Toninelli, Costanza; Benson, Oliver

    2015-01-01T23:59:59.000Z

    Tremendous enhancement of light-matter interaction in plasmon-excited molecular hybrid devices allows for non-linearities on the level of single emitters and few photons. This promises a plethora of novel applications like single photon transistors. Nevertheless, building the components of such devices is technologically extremely challenging. We tackle this task by lithographically fabricating on-chip plasmonic waveguides, efficiently connected to far-field in- and out-coupling ports via low-loss dielectric waveguides. Furthermore, a nano-assembling technology is developed, enabling the controlled coupling of single organic emitters to the plasmonic waveguides. Dibenzoterrylene fluorescent molecules hosted in anthracene crystals are investigated for this purpose. Here we present all key-components and technologies for a plasmon-excited single molecule non-linear device.

  12. Nano-Hertz Gravitational Waves Searches with Interferometric Pulsar Timing Experiments

    E-Print Network [OSTI]

    Massimo Tinto

    2011-01-20T23:59:59.000Z

    We estimate the sensitivity to nano-Hertz gravitational waves of pulsar timing experiments in which two highly-stable millisecond pulsars are tracked simultaneously with two neighboring radio telescopes that are referenced to the same time-keeping subsystem (i.e. "the clock"). By taking the difference of the two time-of-arrival residual data streams we can exactly cancel the clock noise in the combined data set, thereby enhancing the sensitivity to gravitational waves. We estimate that, in the band ($10^{-9} - 10^{-8}$) Hz, this "interferometric" pulsar timing technique can potentially improve the sensitivity to gravitational radiation by almost two orders of magnitude over that of single-telescopes. Interferometric pulsar timing experiments could be performed with neighboring pairs of antennas of the forthcoming large arraying projects.

  13. Nano-fabricated solid immersion lenses registered to single emitters in diamond

    E-Print Network [OSTI]

    L. Marseglia; J. P. Hadden; A. C. Stanley-Clarke; J. P. Harrison; B. Patton; Y. -L. D. Ho; B. Naydenov; F. Jelezko; J. Meijer; P. R. Dolan; J. M. Smith; J. G. Rarity; J. L. O'Brien

    2011-02-22T23:59:59.000Z

    We describe a technique for fabricating micro- and nano-structures incorporating fluorescent defects in diamond with a positional accuracy in the hundreds of nanometers. Using confocal fluorescence microscopy and focused ion beam (FIB) etching we first locate a suitable defect with respect to registration marks on the diamond surface and then etch a structure using these coordinates. We demonstrate the technique here by etching an 8 micron diameter hemisphere positioned such that a single negatively charged nitrogen-vacancy defect lies at its origin. This type of structure increases the photon collection efficiency by removing refraction and aberration losses at the diamond-air interface. We make a direct comparison of the fluorescence photon count rate before and after fabrication and observe an 8-fold increase due to the presence of the hemisphere.

  14. Developing Supersonic Impactor and Aerodynamic Lens for Separation and Handling of Nano-Sized Particles

    SciTech Connect (OSTI)

    Goodarz Ahmadi

    2008-06-30T23:59:59.000Z

    A computational model for supersonic flows of compressible gases in an aerodynamic lens with several lenses and in a supersonic/hypersonic impactor was developed. Airflow conditions in the aerodynamic lens were analyzed and contour plots for variation of Mach number, velocity magnitude and pressure field in the lens were evaluated. The nano and micro-particle trajectories in the lens and their focusing and transmission efficiencies were evaluated. The computational model was then applied to design of a aerodynamic lens that could generate focus particle beams while operating under atmospheric conditions. The computational model was also applied to airflow condition in the supersonic/hypersonic impactor. Variations of airflow condition and particle trajectories in the impactor were evaluated. The simulation results could provide understanding of the performance of the supersonic and hypersonic impactors that would be helpful for the design of such systems.

  15. ATOMIC FORCE LITHOGRAPHY OF NANO MICROFLUIDIC CHANNELS FOR VERIFICATION AND MONITORING IN AQUEOUS SOLUTIONS

    SciTech Connect (OSTI)

    Torres, R.; Mendez-Torres, A.; Lam, P.

    2011-06-09T23:59:59.000Z

    The growing interest in the physics of fluidic flow in nanoscale channels, as well as the possibility for high sensitive detection of ions and single molecules is driving the development of nanofluidic channels. The enrichment of charged analytes due to electric field-controlled flow and surface charge/dipole interactions along the channel can lead to enhancement of sensitivity and limits-of-detection in sensor instruments. Nuclear material processing, waste remediation, and nuclear non-proliferation applications can greatly benefit from this capability. Atomic force microscopy (AFM) provides a low-cost alternative for the machining of disposable nanochannels. The small AFM tip diameter (< 10 nm) can provide for features at scales restricted in conventional optical and electron-beam lithography. This work presents preliminary results on the fabrication of nano/microfluidic channels on polymer films deposited on quartz substrates by AFM lithography.

  16. ATOMIC FORCE LITHOGRAPHY OF NANO/MICROFLUIDIC CHANNELS FOR VERIFICATION AND MONITORING OF AQUEOUS SOLUTIONS

    SciTech Connect (OSTI)

    Mendez-Torres, A.; Torres, R.; Lam, P.

    2011-07-15T23:59:59.000Z

    The growing interest in the physics of fluidic flow in nanoscale channels, as well as the possibility for high sensitive detection of ions and single molecules is driving the development of nanofluidic channels. The enrichment of charged analytes due to electric field-controlled flow and surface charge/dipole interactions along the channel can lead to enhancement of sensitivity and limits-of-detection in sensor instruments. Nuclear material processing, waste remediation, and nuclear non-proliferation applications can greatly benefit from this capability. Atomic force microscopy (AFM) provides a low-cost alternative for the machining of disposable nanochannels. The small AFM tip diameter (< 10 nm) can provide for features at scales restricted in conventional optical and electron-beam lithography. This work presents preliminary results on the fabrication of nano/microfluidic channels on polymer films deposited on quartz substrates by AFM lithography.

  17. Low-temperature method of producing nano-scaled graphene platelets and their nanocomposites

    DOE Patents [OSTI]

    Zhamu, Aruna (Centerville, OH); Shi, Jinjun (Columbus, OH); Guo, Jiusheng (Centerville, OH); Jang, Bor Z. (Centerville, OH)

    2012-03-13T23:59:59.000Z

    A method of exfoliating a layered material to produce separated nano-scaled platelets having a thickness smaller than 100 nm. The method comprises: (a) providing a graphite intercalation compound comprising a layered graphite containing expandable species residing in an interlayer space of the layered graphite; (b) exposing the graphite intercalation compound to an exfoliation temperature lower than 650.degree. C. for a duration of time sufficient to at least partially exfoliate the layered graphite without incurring a significant level of oxidation; and (c) subjecting the at least partially exfoliated graphite to a mechanical shearing treatment to produce separated platelets. The method can further include a step of dispersing the platelets in a polymer or monomer solution or suspension as a precursor step to nanocomposite fabrication.

  18. High energy density capacitors for power electronic applications using nano-structure multilayer technology

    SciTech Connect (OSTI)

    Barbee, T.W. Jr.; Johnson, G.W.

    1995-09-01T23:59:59.000Z

    Power electronics applications are currently limited by capacitor size and performance. Only incremental improvements are anticipated in existing capacitor technologies, while significant performance advances are required in energy density and overall performance to meet the technical needs of the applications which are important for U.S. economic competitiveness. One application, the Power Electronic Building Block (PEBB), promises a second electronics revolution in power electronic design. High energy density capacitors with excellent electrical thermal and mechanical performance represent an enabling technology in the PEBB concept. We propose a continuing program to research and develop LLNL`s nano-structure multilayer technologies for making high voltage, high energy density capacitors. Our controlled deposition techniques are capable of synthesizing extraordinarily smooth sub-micron thick layers of dielectric and conductor materials. We have demonstrated that, with this technology, high voltage capacitors with an order of magnitude improvement in energy density are achievable.

  19. Dynamics of the fast component of nano-confined water under electric field

    SciTech Connect (OSTI)

    Omar Diallo, Souleymane [ORNL; Mamontov, Eugene [ORNL; Podlesnyak, Andrey A [ORNL; Ehlers, Georg [ORNL; Wada, Nobuo [Nagoya University, Japan; Inagaki, S [Toyota Central Research and Development Labs. Inc.; Fukushima, Y [Toyota Central Research and Development Labs. Inc.

    2013-01-01T23:59:59.000Z

    We report the diffusion of water molecules confined in the pores of folded silica materials (FSM-12 with average pore diameter of $\\sim$ 16 \\AA), measured by means of quasielastic neutron scattering using the cold neutron chopper spectrometer (CNCS). The goal is to investigate the effect of electric field on the previously observed fast component of nano-confined water. The measurements were taken at temperatures between 220 K and 245 K, and at two electric field values, 0 kV/mm and 2 kV/mm. Similar to the recently observed electric field induced enhancement of the slow translational motion of confined water, there is a an equally important impact of the field on the faster diffusion.

  20. Nature of Nano-Sized Plutonium Particles in Soils at the Hanford Site

    SciTech Connect (OSTI)

    Buck, Edgar C.; Moore, Dean A.; Czerwinski, Kenneth R.; Conradson, Steven D.; Batuk, Olga; Felmy, Andrew R.

    2014-08-06T23:59:59.000Z

    The occurrence of plutonium dioxide (PuO2) either from direct deposition or from the precipitation of plutonium-bearing solutions in contaminated soils and sediments has been well described, particularly for the Hanford site in Washington State. However, past research has suggested that plutonium may exist in environmental samples at the Hanford site in chemical forms in addition to large size PuO2 particles and that these previously unidentified nano-sized particles maybe more reactive and thus more likely to influence the environmental mobility of Pu. Here we present evidence for the formation of nano-sized plutonium iron phosphate hydroxide structurally related to the rhabdophane group nanoparticles in 216-Z9 crib sediments from Hanford using transmission electron microscopy (TEM). The distribution and nature of these nanoparticles varied depending on the adjacent phases present. Fine electron probes were used to obtain electron diffraction and electron energy-loss spectra from specific phase regions of the 216-Z9 cribs specimens from fine-grained plutonium oxide and phosphate phases. Energy-loss spectra were used to evaluate the plutonium N4,5 (4d ? 5f ) and iron L2,3 absorption edges. The iron plutonium phosphate formation may depend on the local micro-environment in the sediments, availability of phosphate, and hence the distribution of these minerals may control long-term migration of Pu in the soil. This study also points to the utility of using electron beam methods for determining the identity of actinide phases and their association with other sediment phases.

  1. Boride-based nano-laminates with MAX-phase-like behaviour

    SciTech Connect (OSTI)

    Telle, Rainer [Institut fuer Gesteinshuettenkunde (Mineral Engineering), Chair of Ceramics and Refractory Materials, RWTH Aachen, Mauerstrasse 5, D-52056 Aachen (Germany)]. E-mail: telle@ghi.rwth-aachen.de; Momozawa, Ai [Institut fuer Gesteinshuettenkunde (Mineral Engineering), Chair of Ceramics and Refractory Materials, RWTH Aachen, Mauerstrasse 5, D-52056 Aachen (Germany); Music, Denis [Materials Chemistry, RWTH Aachen (Germany); Schneider, Jochen M. [Materials Chemistry, RWTH Aachen (Germany)

    2006-09-15T23:59:59.000Z

    MAX-phases being usually composed of transition metals, group A elements and carbon/nitrogen are considered interesting materials for many applications because of their tremendous bulk modulus, 'reversible' plasticity, and machinability. This is mainly due to their unique kind of bonding comprising covalent, ionic as well as metallic bonds providing 'easy' planes of rupture and deformability due to the layered crystal structures. In transition metal boride systems, similar types of bonding are available. In particular the W{sub 2}B{sub 5}-structure type and its stacking variations allow the synthesis of strongly layered crystal structures exhibiting unique delamination phenomena. The paper presents ab initio calculations showing the similarities of bonding between the ternary carbides and the corresponding ternary or quaternary borides. Formation of boride-based nano-laminates from auxiliary liquid phases, from the melt as well as during sintering and precipitation from supersaturated solid solutions will be discussed by means of SEM and TEM studies. The role of impurities weakening the interlayer bonding will be addressed in particular. The pronounced cleavage parallel to the basal plane gives rise for crack deflection and pull-out mechanisms if the laminates are dispersed in brittle matrices such as boron carbide, silicon carbide or other transition metal borides. - Graphical abstract: Some transition metal borides crystallise in a layered structure of alternating stacks of metal and boron atoms giving rise for strongly anisotropic properties. Their preferred cleavage parallel and the deformability perpendicular to the basal plan are similar to the peculiar mechanical behaviour recently described for MAX-phases. Ab initio calculations of the crystal structure prove the weak bonds between the layers for a variety of borides which can be used to reinforce ceramic materials on a nano-scale level.

  2. The National Nanotechnology Initiative's nanoEHS Workshop Series: February 24-25, 2009: Human and Environmental Exposure Assessment of Nanomaterials

    E-Print Network [OSTI]

    The National Nanotechnology Initiative's nanoEHS Workshop Series: February 24-25, 2009: Human & Ethical, Legal, and Societal Implications of Nanotechnology National Nanotechnology Initiative Save in the National Nanotechnology Initiative's Strategy for Nanotechnology-related Environmental, Health, and Safety

  3. Supporting Information Surface Electric Fields of Aqueous Solutions of NH4NO3, Mg(NO3)2, NaNO3,

    E-Print Network [OSTI]

    S1 Supporting Information Surface Electric Fields of Aqueous Solutions of NH4NO3, Mg(NO3)2, NaNO3 interfaces of (a) 1.0 M and 2.0 M LiNO3, (b) 1.0 M and 1.7 M NaNO3, (c) 1.0 M and 1.6 M NH4NO3, and (d) 1.0 M water 1.0 M NaNO3 1.7 M NaNO3 c water 1.0 M NH4 NO3 1.6 M NH4 NO3 | (2) | 2 (10 3 arb.units) Wavenumber

  4. Poly(lactic-co-glycolic) acid loaded nano-insulin has greater potentials of combating arsenic induced hyperglycemia in mice: Some novel findings

    SciTech Connect (OSTI)

    Samadder, Asmita; Das, Jayeeta; Das, Sreemanti; De, Arnab; Saha, Santu Kumar; Bhattacharyya, Soumya Sundar; Khuda-Bukhsh, Anisur Rahman, E-mail: prof_arkb@yahoo.co.in

    2013-02-15T23:59:59.000Z

    Diabetes is a menacing problem, particularly to inhabitants of groundwater arsenic contaminated areas needing new medical approaches. This study examines if PLGA loaded nano-insulin (NIn), administered either intraperitoneally (i.p.) or through oral route, has a greater cost-effective anti-hyperglycemic potential than that of insulin in chronically arsenite-fed hyperglycemic mice. The particle size, morphology and zeta potential of nano-insulin were determined using dynamic light scattering method, scanning electronic and atomic force microscopies. The ability of the nano-insulin (NIn) to cross the bloodbrain barrier (BBB) was also checked. Circular dichroic spectroscopic (CD) data of insulin and nano-insulin in presence or absence of arsenic were compared. Several diabetic markers in different groups of experimental and control mice were assessed. The mitochondrial functioning through indices like cytochrome c, pyruvate-kinase, glucokinase, ATP/ADP ratio, mitochondrial membrane potential, cell membrane potential and calcium-ion level was also evaluated. Expressions of the relevant marker proteins and mRNAs like insulin, GLUT2, GLUT4, IRS1, IRS2, UCP2, PI3, PPAR?, CYP1A1, Bcl2, caspase3 and p38 for tracking-down the signaling cascade were also analyzed. Results revealed that i.p.-injected nano-encapsulated-insulin showed better results; NIn, due to its smaller size, faster mobility, site-specific release, could cross BBB and showed positive modulation in mitochondrial signaling cascades and other downstream signaling molecules in reducing arsenic-induced-hyperglycemia. CD data indicated that nano-insulin had less distorted secondary structure as compared with that of insulin in presence of arsenic. Thus, overall analyses revealed that PLGA nano-insulin showed better efficacy in combating arsenite-induced-hyperglycemia than that of insulin and therefore, has greater potentials for use in nano-encapsulated form. - Highlights: ? PLGA encapsulated nano-insulin attenuates arsenic-induced diabetes in mice. ? Encapsulated insulin acts effectively at nearly 10 fold lesser dose than insulin. ? Injection route is more effective than oral administration route. ? Nano-insulin can cross bloodbrain barrier with added physiological implications. ? Nano-insulin acts mainly through regulation of mitochondrial signaling cascade.

  5. Barrier properties of PE, PP and EVA (nano)composites - The influence of filler type and concentration

    SciTech Connect (OSTI)

    Merinska, D.; Kalendova, A. [Department of Polymer Engineering, Faculty of Technology, Tomas Bata University in Zlin, Nam. T. G. Masaryka 275, 762 72 Zlin, Czech Republic and Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, Nad Ovcirnou 3685, 760 0 (Czech Republic); Tesarikova, A. [Department of Polymer Engineering, Faculty of Technology, Tomas Bata University in Zlin, Nam. T. G. Masaryka 275, 762 72 Zlin (Czech Republic)

    2014-05-15T23:59:59.000Z

    Nanocomposite materials with layered clay used as nanofiller and polyethylene (PE), polypropylene (PP) and copolymer ethylene and vinyl acetate matrix (EVA, the content of VA component 19 wt. %) were prepared by compounding the individual components in Brabender kneader. The MMT Na+ and four types of commercial products such as Nanofil N 5 and N3000, Cloisite 93A and 30B were used as nanofillers. Next to the clays microprecipitated CaHCO{sub 3}, nanosilica and Halloysite tubes were used. The quantity of all the above-mentioned (nano)fillers was 1, 3 and 5 wt. % in relation to the content of montmorillonite. The aim was to evaluate the influence of (nano)filler type and concentration on nanocomposite barrier properties. The morphology of nanocomposite samples was examined by means of XRD analysis illustrated by transmission electronic microscopy TEM. Furthermore, permeability for O{sub 2} and CO{sub 2} were observed.

  6. Purification and crystallization of Bacillus subtilis NrnA, a novel enzyme involved in nanoRNA degradation

    SciTech Connect (OSTI)

    Nelersa, Claudiu M.; Schmier, Brad J.; Malhotra, Arun (Miami-MED)

    2012-05-08T23:59:59.000Z

    The final step in RNA degradation is the hydrolysis of RNA fragments five nucleotides or less in length (nanoRNA) to mononucleotides. In Escherichia coli this step is carried out by oligoribonuclease (Orn), a DEDD-family exoribonuclease that is conserved throughout eukaryotes. However, many bacteria lack Orn homologs, and an unrelated DHH-family phosphoesterase, NrnA, has recently been identified as one of the enzymes responsible for nanoRNA degradation in Bacillus subtilis. To understand its mechanism of action, B. subtilis NrnA was purified and crystallized at room temperature using the hanging-drop vapor-diffusion method with PEG 4000, PEG 3350 or PEG MME 2000 as precipitant. The crystals belonged to the primitive monoclinic space group P2{sub 1}, with unit-cell parameters a = 50.62, b = 121.3, c = 123.4 {angstrom}, {alpha} = 90, {beta} = 91.31, {gamma} = 90{sup o}.

  7. Effect of antimony nano-scale surface-structures on a GaSb/AlAsSb distributed Bragg reflector

    SciTech Connect (OSTI)

    Husaini, S.; Shima, D.; Ahirwar, P.; Rotter, T. J.; Hains, C. P.; Dang, T.; Bedford, R. G.; Balakrishnan, G. [Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, OH 45433 (United States)] [Air Force Research Laboratory, Sensors Directorate, Wright-Patterson AFB, Dayton, OH 45433 (United States)

    2013-02-11T23:59:59.000Z

    Effects of antimony crystallization on the surface of GaSb during low temperature molecular beam epitaxy growth are investigated. The geometry of these structures is studied via transmission electron and atomic force microscopies, which show the surface metal forms triangular-shaped, elongated nano-wires with a structured orientation composed entirely of crystalline antimony. By depositing antimony on a GaSb/AlAsSb distributed Bragg reflector, the field is localized within the antimony layer. Polarization dependent transmission measurements are carried out on these nano-structures deposited on a GaSb/AlAsSb distributed Bragg reflector. It is shown that the antimony-based structures at the surface favor transmission of light polarized perpendicular to the wires.

  8. Synthesis and characterization of aluminiumalumina micro- and nano-composites by spark plasma sintering

    SciTech Connect (OSTI)

    Dash, K., E-mail: khushbudash@gmail.com; Chaira, D.; Ray, B.C.

    2013-07-15T23:59:59.000Z

    Graphical abstract: The evolution of microstructure by varying the particle size of reinforcement in the matrix employing spark plasma sintering has been demonstrated here in AlAl{sub 2}O{sub 3} system. An emphasis has been laid on varying the reinforcement particle size and evaluating the microstructural morphologies and their implications on mechanical performance of the composites. Nanocomposites of 0.5, 1, 3, 5, 7 volume % alumina (average size < 50 nm) reinforced in aluminium matrix were fabricated by powder metallurgy route using spark plasma sintering technique technique at a temperature of 773 K and pressure of 50 MPa. Another set of specimens having composition 1, 5, 20 vol.% of alumina (average size ? 10 ?m) had been fabricated to compare the physical as well as mechanical attributes of the microcomposite as well as the nanocomposites. These micro- and nano-composites have been characterized using X-ray diffraction, scanning electron microscopy and transmission electron microscopy followed by density, microhardness and nanoindentation measurements. The alumina nanoparticles revealed an interface showing appreciable physical intimacy with the aluminium matrix compared to that of the alumina microparticles. The interfacial integrity in case of nanocomposites is better than in the microcomposite which has been studied using microscopic techniques. Spark plasma sintering imparts enhanced densification as well as matrix-reinforcement proximity which has been corroborated with the experimental results. - Highlights: The AlAl{sub 2}O{sub 3} micro- and nano-composites fabricated by spark plasma sintering. Better matrix-reinforcement integrity in nanocomposites than microcomposites. Spark plasma sintering method results in higher density and hardness values. High density and hardness values of nanocomposites than microcomposites. High dislocation density in spark plasma sintered AlAl{sub 2}O{sub 3} composites. - Abstract: In the present study, an emphasis has been laid on evaluation of the microstructural morphologies and their implications on mechanical performance of the composites by varying the reinforcement particle size. Nanocomposites of 0.5, 1, 3, 5, 7 volume % alumina (average size < 50 nm) and microcomposites of 1, 5, 20 volume % of alumina (average size ? 10 ?m) reinforced in aluminium matrix were fabricated by spark plasma sintering technique at a temperature of 773 K and pressure of 50 MPa. These micro- and nano-composites have been characterized using X-ray diffraction, scanning electron microscopy and transmission electron microscopy followed by density, microhardness and nanoindentation hardness measurements. The alumina nanoparticles revealed appreciable physical intimacy with the aluminium matrix than that of alumina microparticles. The highest nanohardness recorded 0.85 GPa and 99% densification for 7 and 1 vol.% AlAl{sub 2}O{sub 3} nancomposites respectively. Spark plasma sintering imparts enhanced densification and matrix-reinforcement proximity which have been corroborated with the experimental results.

  9. Effects of nano-SiO{sub 2} particles on surface tracking characteristics of silicone rubber composites

    SciTech Connect (OSTI)

    Liu, Yong, E-mail: tjuliuyong@tju.edu.cn; Li, Zhonglei; Du, Boxue [Key Laboratory of Smart Grid of Ministry of Education (Tianjin University), School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072 (China)

    2014-09-08T23:59:59.000Z

    Compared with neat silicone rubber composites (SiRCs), SiRCs filled with nano-sized SiO{sub 2} particles at weight ratios from 0.1 to 1.0?wt.?% exhibit a higher surface flashover voltage and a greater resistance to surface tracking. Scanning electron microscopy images of tracking morphologies indicate that the SiO{sub 2} particles are situated in close proximity to the polymeric chains and act as bridges to stabilize the chains and maintain the structure of the composite. Higher concentrations of nano-sized SiO{sub 2} particles, however, (above 0.3?wt.?%) produce defects in the molecular network which lead to reductions in both the surface flashover voltage and the resistance to surface tracking, although these reduced values are still superior to those of neat SiRCs. Therefore, SiRCs filled with nano-sized SiO{sub 2} particles, especially at an optimal weight ratio (0.1 to 0.3?wt.?%), may have significant potential applications as outdoor insulators for power systems.

  10. Interlayer Water Regulates the Bio-nano Interface of a \\b{eta}-sheet Protein stacking on Graphene

    E-Print Network [OSTI]

    Wenping Lv; Guiju Xu; Hongyan Zhang; Xin Li; Shengju Liu; Huan Niu; Dongsheng Xu; Renan Wu

    2014-12-03T23:59:59.000Z

    Using molecular dynamics simulations, we investigated an integrated bio-nano interface consisting of a \\b{eta}-sheet protein stacked onto graphene. We found that the stacking assembly of the model protein on graphene could be controlled by water molecules. The interlayer water filled within interstices of the bio-nano interface could suppress the molecular vibration of surface groups on protein, and could impair the CH...{\\pi} interaction driving the attraction of the protein and graphene. The intermolecular coupling of interlayer water would be relaxed by the relative motion of protein upon graphene due to the interaction between water and protein surface. This effect reduced the hindrance of the interlayer water against the assembly of protein on graphene, resulting an appropriate adsorption status of protein on graphene with a deep free energy trap. Thereby, the confinement and the relative sliding between protein and graphene, the coupling of protein and water, and the interaction between graphene and water all have involved in the modulation of behaviors of water molecules within the bio-nano interface, governing the hindrance of interlayer water against the protein assembly on hydrophobic graphene. These results provide a deep insight into the fundamental mechanism of protein adsorption onto graphene surface in water.

  11. Cotton fibers nano-TiO{sub 2} composites prepared by as-assembly process and the photocatalytic activities

    SciTech Connect (OSTI)

    Xia, J.H., E-mail: xiajianhan@163.com [School of Engineering, The Hong Kong University of Science and Technology, Hong Kong (China); Hsu, C.T.; Qin, D.D. [School of Engineering, The Hong Kong University of Science and Technology, Hong Kong (China)] [School of Engineering, The Hong Kong University of Science and Technology, Hong Kong (China)

    2012-12-15T23:59:59.000Z

    Graphical abstract: Display Omitted Highlights: ? TiO{sub 2} nanoparticles self-assemble process under the assistant of carboxylic group. ? The carboxylic group was introduced by displacement reaction. ? The loading amount of nano-TiO{sub 2} was depended on the displacement degree of C-6-OH. ? UVVis experiments showed these fibers had efficient photocatalysis. ? The degradation reaction Rhodamine 6G under UV light obeys zero-order rate law. -- Abstract: This paper describes photocatalytic cotton fibers produced by a TiO{sub 2} nanoparticle self-assembly process with the assistance of carboxylic groups. The carboxylic group was introduced by a displacement reaction, the molecular structure of the glucose unit was studied by utilizing solid {sup 13}C NMR. The appearance of the prepared fibers was observed by scanning electron microscopy, it was found that nano-TiO{sub 2} coated uniformly on the fiber surface. The loading amount of nano-TiO{sub 2} was depended on the displacement degree of C-6-OH. UVVis experiments showed these coated fibers undergo photocatalysis efficiently. The degradation reaction of Rhodamine 6G under UV light obeys the zero-order rate law.

  12. Flame aerosol nano-technology has been developed to preparation of thin and defect-free porous membrane from the gas phase as a one step method in preparation of membrane for gas

    E-Print Network [OSTI]

    Abstract Flame aerosol nano-technology has been developed to preparation of thin and defect on deposition of nano particles (-Al2O3, MgO or spinel MgAl2O4), formed in the premixed flame reactor through/or aluminium precursors in the flame to form nano-particles of -Al2O3, MgO or MgAl2O4 spinel. The generated

  13. Ductility Enhancement of Molybdenum Phase by Nano-sized Oxide Dispersions

    SciTech Connect (OSTI)

    Kang, Bruce

    2008-07-18T23:59:59.000Z

    The objective of this research is to understand and to remedy the impurity effects for room-temperature ductility enhancement of molybdenum (Mo) based alloys by the inclusion of nano-sized metal oxide dispersions. This research combines theoretical, computational, and experimental efforts. The results will help to formulate systematic strategies in searching for better composed Mo-based alloys with optimal mechanical properties. For this project, majority of the research effort was directed to atomistic modeling to identify the mechanisms responsible for the oxygen embrittling and ductility enhancement based on fundamental electronic structure analysis. Through first principles molecular dynamics simulations, it was found that the embrittling impurity species were attracted to the metal oxide interface, consistent with previous experiments. Further investigation on the electronic structures reveals that the presence of embrittling species degrades the quality of the metallic chemical bonds in the hosting matrix in a number of ways, the latter providing the source of ductility. For example, the spatial flexibility of the bonds is reduced, and localization of the impurity states occurs to pin the dislocation flow. Rices criterion has been invoked to explain the connections of electronic structure and mechanical properties. It was also found that when impurity species become attracted to the metal oxide interface, some of the detrimental effects are alleviated, thus explaining the observed ductility enhancement effects. These understandings help to develop predictive capabilities to facilitate the design and optimization of Mo and other high temperature alloys (e.g. ODS alloys) for fossil energy materials applications. Based on the theoretical and computational studies, the experimental work includes the preparation of Mo powders mixed with candidate nano-sized metal oxides, which were then vacuum hot-pressed to make the Mo alloys. Several powder mixing methods were evaluated, however, the Mo alloys produced showed little improvement of room-temperature ductility. Finally, toward the end of the research project, a particle mixing process (Hosokawa mechano chemical bonding technology) was applied and the sample Mo alloys showed much improved room-temperature ductility. Follow-up mechanical properties evaluations on the as-processed Mo alloys were carried out using an in-house developed micro-indentation technique which is suitable for in-situ material mechanical properties measurement and ductility/brittle evaluation on small-size sample alloys. Relevant experimental results of the micro-indentation tests are presented.

  14. Metallic magnetism and change of conductivity in the nano to bulk transition of cobalt ferrite

    SciTech Connect (OSTI)

    Arunkumar, A.; Vanidha, D.; Kannan, R., E-mail: kannan@pec.edu [Department of Physics, Pondicherry Engineering College, Puducherry605 014 (India); Oudayakumar, K. [Department of Physics, Sri Manakula Vinayagar Engineering College, Puducherry605 107 (India); Rajagopan, S. [Department of Chemistry, Pondicherry Engineering College, Puducherry605 014 (India)

    2013-11-14T23:59:59.000Z

    Variations in conductivity with particle size have been observed in cobalt ferrite, when synthesized by solgel auto-combustion method. Impedance analysis reveals metallic and semiconducting behavior at room temperature for a particle size of 6?nm and 52?nm, respectively. Upon thermal activation, metallic to semiconducting phase transition has been observed as a function of particle size and vice-versa. Grainboundary Resistance (R{sub gb}), increased drastically with particle size (19?M? for 6?nm and 259?M? for 52?nm) at room temperature. AC conductivity and dielectric constants exhibit similar metallic to semiconducting phase transition at 6?nm and semiconducting behavior at 52?nm with temperature in the selected frequencies. Enhanced magnetic moment with an increase in the grain size along with decreased coercivity (1444?G to 1146?G) reveals transition from single domain to multi-domain. Increased inter-particle interaction is responsible for metallicity at the nano level and on the contrary semiconductivity is attributed to bulk.

  15. Nano/bio treatment of polychlorinated biphenyls with evaluation of comparative toxicity

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

    Le, Thao Thanh; Francis, Arokiasamy J.; Nguyen, Hoang Khanh; Jeon, Jong -Rok; Chang, Yoon -Seok

    2015-04-01T23:59:59.000Z

    The persistence of polychlorinated biphenyl (PCB) Aroclor 1248 in soils and sediments is a major concern because of its toxicity and presence at high concentrations. In this study, we developed an integrated remediation system for PCBs using chemical catalysis and biodegradation. The dechlorination of Aroclor 1248 was achieved by treatment with bimetallic nanoparticles Pd/nFe under anoxic conditions. Among the 32 PCB congeners of Aroclor 1248 examined, our process dechlorinated 99%, 92%, 84%, and 28% of tri-, tetra-, penta-, and hexachlorinated biphenyls, respectively. The resulting biphenyl was biodegraded rapidly by Burkholderia xenovorans LB400. Benzoic acid was detected as an intermediate during the biodegradation process. The toxicity of the residual PCBs after nano-bio treatment was evaluated in terms of toxic equivalent values which decreased from 33.8 105 ?g g1 to 9.5 105 ?g g1. The residual PCBs also had low cytotoxicity toward Escherichia coli as demonstrated by lower reactive oxygen species levels, lower glutathione peroxidase activity, and a reduced number of dead bacteria.

  16. Searching for the Physical Drivers of Eigenvector-1: From Quasars to Nano-Quasars

    E-Print Network [OSTI]

    R. Zamanov; P. Marziani

    2002-04-25T23:59:59.000Z

    We point out an analogy between two accreting white dwarfs with jets (CH Cyg and MWC 560) and powerful quasars. In spite of the enormous difference in the mass of the central object (a factor about 10^7), the emission lines are strikingly similar to those of I Zw1 (the prototype "Narrow Line Seyfert 1" nucleus whose spectrum is widely used as an FeII template for almost all quasars). The spectral similarity give us the unique possibility to consider the optical Eigenvector-1 diagram using objects less massive by a factor of millions. Our results reinforce the interpretation of the "Eigenvector-1 correlations" found for low redshift quasars as driven mainly by the source luminosity to central compact object mass ratio(L/M). The accreting white dwarfs CH Cyg and MWC 560, their jets and emission lines, may well represent the low energy, non relativistic end of the accretion phenomena, which encompass the most powerful quasars and the microquasars. The remarkable similarities suggest that they may be legitimately considered "nano-quasars".

  17. Spontaneous iginition of low-concentration nano-sized Al-water slurry

    SciTech Connect (OSTI)

    Tran, Phuoc [U.S. DOE; Chen, Ruey-Hung

    2013-01-01T23:59:59.000Z

    Spontaneous ignition of a nano-sized aluminum (Al) particles-water slurry using a hot plate was investigated. The aluminum weight fractions were 17% and 27%. The hot plate temperatures ranged from 303 to 343 K. For all experimental conditions used, ignition was observed to occur at about 321 K and it was followed by a rapid temperature increase to above the boiling temperature of the water. Although the thermal runaway condition did not occur until the slurry reached a temperature of 321 K, it was able to react at a temperature as low as 303 K and develops sufficient heat for the slurry to reach the ignition condition. The ignition kinetic data were determined showing that E/R = 28619.66 (K) and k = 1.2644 10{sup 37} K/s for the slurry containing 17% aluminum and, the value of k was about 2.398 10{sup 37} K/s for those having 27% aluminum by weight.

  18. Radiation Resistance of XLPE Nano-dielectrics for Advanced Reactor Applications

    SciTech Connect (OSTI)

    Duckworth, Robert C [ORNL; Polyzos, Georgios [ORNL; Paranthaman, Mariappan Parans [ORNL; Aytug, Tolga [ORNL; Leonard, Keith J [ORNL; Sauers, Isidor [ORNL

    2014-01-01T23:59:59.000Z

    Recently there has been renewed interest in nuclear reactor safety, particularly as commercial reactors are approaching 40 years service and lifetime extensions are considered, as well as for new reactor building projects around the world. The materials that are currently used in cabling for instrumentation, reactor control, and communications include cross-linked polyethylene (XLPE), ethylene propylene rubber (EPR), polyvinyl chloride (PVC), neoprene, and chlorosulfonated polyethylene. While these materials show suitable radiation tolerance in laboratory tests, failures before their useful lifetime occur due to the combined environmental effects of radiation, temperature and moisture, or operation under abnormal conditions. In addition, the extended use of commercial reactors beyond their original service life places a greater demand on insulating materials to perform beyond their current ratings in these nuclear environments. Nanocomposite materials that are based on XLPE and other epoxy resins incorporating TiO2, MgO, SiO2, and Al2O3 nanoparticles are being fabricated using a novel in-situ method established at ORNL to demonstrate materials with increased resistance to radiation. As novel nanocomposite dielectric materials are developed, characterization of the non-irradiated and irradiated nanodielectrics will lead to a knowledge base that allow for dielectric materials to be engineered with specific nanoparticle additions for maximum benefit to wide-variety of radiation environments found in nuclear reactors. This paper presents the initial findings on the development of XLPE-based SiO2 nano-composite dielectrics in the context of electrical performance and radiation degradation.

  19. Method of producing nano-scaled graphene and inorganic platelets and their nanocomposites

    DOE Patents [OSTI]

    Jang, Bor Z. (Centerville, OH); Zhamu, Aruna (Centerville, OH)

    2011-02-22T23:59:59.000Z

    Disclosed is a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm, and often between 0.34 nm and 1.02 nm. The method comprises: (a) subjecting the layered material in a powder form to a halogen vapor at a first temperature above the melting point or sublimation point of the halogen at a sufficient vapor pressure and for a duration of time sufficient to cause the halogen molecules to penetrate an interlayer space of the layered material, forming a stable halogen-intercalated compound; and (b) heating the halogen-intercalated compound at a second temperature above the boiling point of the halogen, allowing halogen atoms or molecules residing in the interlayer space to exfoliate the layered material to produce the platelets. Alternatively, rather than heating, step (a) is followed by a step of dispersing the halogen-intercalated compound in a liquid medium which is subjected to ultrasonication for exfoliating the halogen-intercalated compound to produce the platelets, which are dispersed in the liquid medium. The halogen can be readily captured and re-used, thereby significantly reducing the impact of halogen to the environment. The method can further include a step of dispersing the platelets in a polymer or monomer solution or suspension as a precursor step to nanocomposite fabrication.

  20. Method of producing nano-scaled graphene and inorganic platelets and their nanocomposites

    DOE Patents [OSTI]

    Jang, Bor Z. (Centerville, OH); Zhamu, Aruna (Centerville, OH)

    2012-02-14T23:59:59.000Z

    Disclosed is a method of exfoliating a layered material (e.g., graphite and graphite oxide) to produce nano-scaled platelets having a thickness smaller than 100 nm, typically smaller than 10 nm, and often between 0.34 nm and 1.02 nm. The method comprises: (a) subjecting the layered material in a powder form to a halogen vapor at a first temperature above the melting point or sublimation point of the halogen at a sufficient vapor pressure and for a duration of time sufficient to cause the halogen molecules to penetrate an interlayer space of the layered material, forming a stable halogen-intercalated compound; and (b) heating the halogen-intercalated compound at a second temperature above the boiling point of the halogen, allowing halogen atoms or molecules residing in the interlayer space to exfoliate the layered material to produce the platelets. Alternatively, rather than heating, step (a) is followed by a step of dispersing the halogen-intercalated compound in a liquid medium which is subjected to ultrasonication for exfoliating the halogen-intercalated compound to produce the platelets, which are dispersed in the liquid medium. The halogen can be readily captured and re-used, thereby significantly reducing the impact of halogen to the environment. The method can further include a step of dispersing the platelets in a polymer or monomer solution or suspension as a precursor step to nanocomposite fabrication.

  1. Ductility Enhancement of Molybdenum Phase by Nano-sizedd Oxide Dispersions

    SciTech Connect (OSTI)

    Bruce Kang

    2008-07-31T23:59:59.000Z

    The present research is focused on ductility enhancement of molybdenum (Mo) alloys by adding nano-sized oxide particles to the alloy system. The research approach includes: (1) determination of microscopic mechanisms responsible for the macroscopic ductility enhancement effects through atomistic modeling of the metal-ceramic interface; (2) subsequent computer simulation-aided optimization of composition and nanoparticle size of the dispersion for improved performance; (3) synthesis and characterization of nanoparticle dispersion following the guidance from atomistic computational modeling analyses (e.g., by processing a small sample of Mo alloy for evaluation); and (4) experimental testing of the mechanical properties to determine optimal ductility enhancement.Through atomistic modeling and electronic structure analysis using full-potential linearized muffin-tin orbital (FP-LMTO) techniques, research to date has been performed on a number of selected chromium (Cr) systems containing nitrogen (N) and/or magnesium oxide (MgO) impurities. The emphasis has been on determining the properties of the valence electrons and the characteristics of the chemical bonds they formed. It was found that the brittle/ductile behavior of this transitional metal system is controlled by the relative population of valence charges: bonds formed by s valence electrons yield metallic, ductile behavior, whereas bonds formed by d valence electrons lead to covalent, brittle behavior. The presence of valence bands from impurities also affects the metal bonding, thereby explaining the detrimental and beneficial effects induced by the inclusion of N impurities and MgO dispersions. These understandings are useful for optimizing ductility enhancement effects on the dispersion materials.

  2. SwedNanoTech and Business Sweden is organizing a partnering mission to Asia in September 2013. The trip is arranged especially for Swedish companies and researchers within the

    E-Print Network [OSTI]

    Lagergren, Jens

    in sustainable development, life sciences and energy. The aim of the trip is to promote Swedish researchSwedNanoTech and Business Sweden is organizing a partnering mission to Asia in September 2013 11th - 13th. The number of participants is limited to 15 people. SwedNanoTech and Business Sweden

  3. Please cite this article in press as: H. Wu, Y. Cui, Nano Today (2012), http://dx.doi.org/10.1016/j.nantod.2012.08.004 ARTICLE IN PRESS+Model

    E-Print Network [OSTI]

    Cui, Yi

    Please cite this article in press as: H. Wu, Y. Cui, Nano Today (2012), http://dx.doi.org/10.1016/j.nantod.2012.08.004 ARTICLE IN PRESS+Model NANTOD-268; No. of Pages 16 Nano Today (2012) xxx, xxx of nanostructure design, encompassing solid nanostructures such as nanowires, hollow nanostructures, and clamped

  4. NanoSIMS Imaging Alternation Layers of a Leached SON68 Glass Via A FIB-made Wedged Crater

    SciTech Connect (OSTI)

    Wang, Yi-Chung; Schreiber, Daniel K.; Neeway, James J.; Thevuthasan, Suntharampillai; Evans, James E.; Ryan, Joseph V.; Zhu, Zihua; Wei, Wei

    2014-11-01T23:59:59.000Z

    Currently, nuclear wastes are commonly immobilized into glasses because of their long-term durability. Exposure to water for long periods of time, however, will eventually corrode the waste form and is the leading potential avenue for radionuclide release into the environment. Because such slow processes cannot be experimentally tested, the prediction of release requires a thorough understanding the mechanisms governing glass corrosion. In addition, due to the exceptional durability of glass, much of the testing must be performed on high-surface-area powders. A technique that can provide accurate compositional profiles with very precise depth resolution for non-flat samples would be a major benefit to the field. Time-of-flight secondary ion mass spectrometry (ToF-SIMS) depth profiling is an excellent tool that has long been used to examine corrosion layers of glass. The roughness of the buried corrosion layers, however, causes the corresponding SIMS depth profiles to exhibit erroneously wide interfaces. In this study, NanoSIMS was used to image the cross-section of the corrosion layers of a leached SON68 glass sample. A wedged crater was prepared by a focused ion beam (FIB) instrument to obtain a 5 improvement in depth resolution for NanoSIMS measurements. This increase in resolution allowed us to confirm that the breakdown of the silica glass network is further from the pristine glass than a second dissolution front for boron, another glass former. The existence of these two distinct interfaces, separated by only ~20 nm distance in depth, was not apparent by traditional ToF-SIMS depth profiling but has been confirmed also by atom probe tomography. This novel sample geometry will be a major benefit to efficient NanoSIMS sampling of irregular interfaces at the nanometer scale that would otherwise be obscured within ToF-SIMS depth profiles.

  5. X-ray nano-diffraction study of Sr intermetallic phase during solidification of Al-Si hypoeutectic alloy

    SciTech Connect (OSTI)

    Manickaraj, Jeyakumar; Gorny, Anton; Shankar, Sumanth, E-mail: shankar@mcmaster.ca [Light Metal Casting Research Centre (LMCRC), Department of Mechanical Engineering, McMaster University, 1280 Main Street W, Hamilton, Ontario L8S 4L7 (Canada); Cai, Zhonghou [Advanced Photon Source, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439 (United States)

    2014-02-17T23:59:59.000Z

    The evolution of strontium (Sr) containing intermetallic phase in the eutectic reaction of Sr-modified Al-Si hypoeutectic alloy was studied with high energy synchrotron beam source for nano-diffraction experiments and x-ray fluorescence elemental mapping. Contrary to popular belief, Sr does not seem to interfere with the Twin Plane Re-entrant Edge (TPRE) growth mechanism of eutectic Si, but evolves as the Al{sub 2}Si{sub 2}Sr phase during the eutectic reaction at the boundary between the eutectic Si and Al grains.

  6. Femtosecond laser fabrication of micro and nano-disks in single layer graphene using vortex Bessel beams

    SciTech Connect (OSTI)

    Wetzel, Benjamin, E-mail: benjamin.wetzel@femto-st.fr; Xie, Chen; Lacourt, Pierre-Ambroise; Dudley, John M.; Courvoisier, Francois [Dpartement d'Optique P.M. Duffieux, Institut FEMTO-ST, UMR6174 CNRS, Universit de Franche-Comt, 25030 Besanon (France)] [Dpartement d'Optique P.M. Duffieux, Institut FEMTO-ST, UMR6174 CNRS, Universit de Franche-Comt, 25030 Besanon (France)

    2013-12-09T23:59:59.000Z

    We report the fabrication of micro and nano-disks in single layer chemical vapor deposition graphene on glass substrate using femtosecond laser ablation with vortex Bessel beams. The fabricated graphene disks with diameters ranging from 650?nm to 4??m were characterized by spatially resolved micro-Raman spectroscopy. The variation of ablation threshold was investigated as a function of the number of pulses showing an incubation effect. A very high degree of size control of the fabricated graphene disks is enabled using a sequence of femtosecond pulses with different vortex orders.

  7. Environmentally benign graphite intercalation compound composition for exfoliated graphite, flexible graphite, and nano-scaled graphene platelets

    SciTech Connect (OSTI)

    Zhamu, Aruna; Jang, Bor Z.

    2014-06-17T23:59:59.000Z

    A carboxylic-intercalated graphite compound composition for the production of exfoliated graphite, flexible graphite, or nano-scaled graphene platelets. The composition comprises a layered graphite with interlayer spaces or interstices and a carboxylic acid residing in at least one of the interstices, wherein the composition is prepared by a chemical oxidation reaction which uses a combination of a carboxylic acid and hydrogen peroxide as an intercalate source. Alternatively, the composition may be prepared by an electrochemical reaction, which uses a carboxylic acid as both an electrolyte and an intercalate source. Exfoliation of the invented composition does not release undesirable chemical contaminants into air or drainage.

  8. Enhanced synchronization in an array of spin torque nano oscillators in the presence of oscillating external magnetic field

    E-Print Network [OSTI]

    B. Subash; V. K. Chandrasekar; M. Lakshmanan

    2014-12-23T23:59:59.000Z

    We demonstrate that the synchronization of an array of electrically coupled spin torque nano-oscillators (STNO) modelled by Landau-Lifshitz-Gilbert-Slonczewski (LLGS) equation can be enhanced appreciably in the presence of a common external microwave magnetic field. The applied microwave magnetic field stabilizes and enhances the regions of synchronization in the parameter space of our analysis, where the oscillators are exhibiting synchronized oscillations thereby emitting improved microwave power. To characterize the synchronized oscillations we have calculated the locking range in the domain of external source frequency.

  9. Tailorable optical scattering properties of the V-shaped plasmonic nano-antennas: a computationally efficient and fast analysis

    E-Print Network [OSTI]

    Rashidi, Arash; Anagnostou, Dimitris E

    2015-01-01T23:59:59.000Z

    We introduce an efficient computational scheme based on Macro Basis Function (MBF) method, to analyze the scattering of a plane wave by the V-shaped plasmonic optical nano-antennas. The polarization currents and the scattered fields for symmetric and anti-symmetric excitations are investigated. We investigate how the resonant frequency of the plasmonic V-shaped nanoantenna is tailored by engineering the geometrical parameters and by changing the polarization state of the incident plane wave. The computational model presented herein is faster by orders of magnitude than commercially available finite methods and is capable to characterize also other nanoantennas comprising of junctions and bends of nanorods.

  10. Titanium-Dioxide Nano-Fiber-Cotton Targets for Efficient Multi-keV X-Ray Generation

    SciTech Connect (OSTI)

    Tanabe, M; Nishimura, H; Fujioka, S; Nagai, K; Yamamoto, N; Gu, Z; Pan, C; Girard, F; Primout, M; Villette, B; Brebion, D; Fournier, K B; Fujishima, A; Mima, K

    2008-06-12T23:59:59.000Z

    Multi-keV x-ray generation from low-density (27 {+-} 7 mg/cc) nano-fiber-cotton targets composed of titanium-dioxide has been investigated. The cotton targets were heated volumetrically and supersonically to a peak electron temperature of 2.3 keV, which is optimal to yield Ti K-shell x rays. Considerable enhancement of conversion efficiency (3.7 {+-} 0.5%) from incident laser energy into Ti K-shell x rays (4-6 keV band) was attained in comparison with that (1.4 {+-} 0.9%) for a planar Ti-foil target.

  11. Surface smoothing effect of an amorphous thin film deposited by atomic layer deposition on a surface with nano-sized roughness

    SciTech Connect (OSTI)

    Lau, W. S., E-mail: liuweicheng@zju.edu.cn; Wan, X.; Xu, Y.; Wong, H. [Zhejiang University, Department of Information Science and Electronic Engineering, No. 38 Zheda Road, Hangzhou 310027 (China)] [Zhejiang University, Department of Information Science and Electronic Engineering, No. 38 Zheda Road, Hangzhou 310027 (China); Zhang, J. [Zhejiang University, Department of Materials Science and Engineering, No. 38 Zheda Road, Hangzhou 310027 (China)] [Zhejiang University, Department of Materials Science and Engineering, No. 38 Zheda Road, Hangzhou 310027 (China); Luo, J. K. [Zhejiang University, Department of Information Science and Electronic Engineering, No. 38 Zheda Road, Hangzhou 310027 (China) [Zhejiang University, Department of Information Science and Electronic Engineering, No. 38 Zheda Road, Hangzhou 310027 (China); Institute of Renewable Energy and Environment Technology, Bolton University, Deane Road, Bolton BL3 5 AB (United Kingdom)

    2014-02-15T23:59:59.000Z

    Previously, Lau (one of the authors) pointed out that the deposition of an amorphous thin film by atomic layer deposition (ALD) on a substrate with nano-sized roughness probably has a surface smoothing effect. In this letter, polycrystalline zinc oxide deposited by ALD onto a smooth substrate was used as a substrate with nano-sized roughness. Atomic force microscopy (AFM) and cross-sectional transmission electron microscopy (XTEM) were used to demonstrate that an amorphous aluminum oxide thin film deposited by ALD can reduce the surface roughness of a polycrystalline zinc oxide coated substrate.

  12. Uniform nano-ripples on the sidewall of silicon carbide micro-hole fabricated by femtosecond laser irradiation and acid etching

    SciTech Connect (OSTI)

    Khuat, Vanthanh [Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Collaborative Innovation Center of Suzhou Nano Science and Technology, School of Electronics and Information Engineering, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an 710049 (China); Le Quy Don Technical University, No. 100, Hoang Quoc Viet Street, Hanoi 7EN-248 (Viet Nam); Chen, Tao; Gao, Bo; Si, Jinhai, E-mail: jinhaisi@mail.xjtu.edu.cn; Ma, Yuncan; Hou, Xun [Key Laboratory for Physical Electronics and Devices of the Ministry of Education and Collaborative Innovation Center of Suzhou Nano Science and Technology, School of Electronics and Information Engineering, Xi'an Jiaotong University, No. 28, Xianning West Road, Xi'an 710049 (China)

    2014-06-16T23:59:59.000Z

    Uniform nano-ripples were observed on the sidewall of micro-holes in silicon carbide fabricated by 800-nm femtosecond laser and chemical selective etching. The morphology of the ripple was analyzed using scanning electronic microscopy. The formation mechanism of the micro-holes was attributed to the chemical reaction of the laser affected zone with mixed solution of hydrofluoric acid and nitric acid. The formation of nano-ripples on the sidewall of the holes could be attributed to the standing wave generated in z direction due to the interference between the incident wave and the reflected wave.

  13. Nano-biolistics: a method of biolistic transfection of cells and tissues using a gene gun with novel nanometer-sized projectiles

    E-Print Network [OSTI]

    O'Brien, John A; Lummis, Sarah C R

    2011-06-10T23:59:59.000Z

    METHODOLOGY ARTICLE Open Access Nano-biolistics: a method of biolistic transfection of cells and tissues using a gene gun with novel nanometer-sized projectiles John A OBrien1 and Sarah CR Lummis1,2* Abstract Background: Biolistic transfection... and nano-particles The core diameter of the particles used was 40 0.8 nm or 991 11 nm for the 40 nm (Alfa Aesar, MA, USA) and 1 ?m (Bio-Rad laboratories, USA) particles respec- tively. These particles have a hydrodynamic diameter of 47.2 1.3 and 1060...

  14. Reducing Logistics Footprints and Replenishment Demands: Nano-engineered Silica Aerogels a Proven Method for Water Treatment

    SciTech Connect (OSTI)

    Daily, W; Coleman, S; Love, A; Reynolds, J; O'Brien, K; Gammon, S

    2004-09-22T23:59:59.000Z

    Rapid deployment and the use of objective force aggressively reduce logistic footprints and replenishment demands. Maneuver Sustainment requires that Future Combat Systems be equipped with water systems that are lightweight, have small footprints, and are highly adaptable to a variety of environments. Technologies employed in these settings must be able to meet these demands. Lawrence Livermore National Laboratory has designed and previously field tested nano-engineered materials for the treatment of water. These materials have been either based on silica aerogel materials or consist of composites of these aerogels with granular activated carbon (GAC). Recent tests have proven successful for the removal of contaminants including uranium, hexavalent chromium, and arsenic. Silica aerogels were evaluated for their ability to purify water that had been spiked with the nerve agent VX (O-ethyl S-(2-diisopropylaminoethyl) methylphosphonothiolate). These results demonstrated that silica aerogels were able to remove the VX from the supply water and were nearly 30 times more adsorbent than GAC. This performance could result in REDUCING CHANGEOUT FREQUENCY BY A FACTOR OF 30 or DECREASING the VOLUME of adsorbent BY A FACTOR OF 30; thereby significantly reducing logistic footprints and replenishment demands. The use of the nano-engineered Silica Aerogel/GAC composites would provide a water purification technology that meets the needs of Future Combat Systems.

  15. The intense slow positron beam facility at the PULSTAR reactor and applications in nano-materials study

    SciTech Connect (OSTI)

    Liu, Ming; Moxom, Jeremy; Hawari, Ayman I. [Nuclear Reactor Program, Department of Nuclear Engineering, North Carolina State University, P.O. Box 7909, Raleigh, NC 27695 (United States); Gidley, David W. [Department of Physics, University of Michigan, 450 Church Street, Ann Arbor MI 48109 (United States)

    2013-04-19T23:59:59.000Z

    An intense slow positron beam has been established at the PULSTAR nuclear research reactor of North Carolina State University. The slow positrons are generated by pair production in a tungsten moderator from gammarays produced in the reactor core and by neutron capture reactions in cadmium. The moderated positrons are electrostatically extracted and magnetically guided out of the region near the core. Subsequently, the positrons are used in two spectrometers that are capable of performing positron annihilation lifetime spectroscopy (PALS) and positron Doppler broadening spectroscopy (DBS) to probe the defect and free volume properties of materials. One of the spectrometers (e{sup +}-PALS) utilizes an rf buncher to produce a pulsed beam and has a timing resolution of 277 ps. The second spectrometer (Ps-PALS) uses a secondary electron timing technique and is dedicated to positronium lifetime measurements with an approximately 1 ns timing resolution. PALS measurements have been conducted in the e{sup +}-PALS spectrometer on a series of nano-materials including organic photovoltaic thin films, membranes for filtration, and polymeric fibers. These studies have resulted in understanding some critical issues related to the development of the examined nano-materials.

  16. Subscriber access provided by -Access paid by the | UC Davis Libraries Nano Letters is published by the American Chemical Society. 1155 Sixteenth

    E-Print Network [OSTI]

    Islam, M. Saif

    Subscriber access provided by - Access paid by the | UC Davis Libraries Nano Letters is published Engineering, Kemper Hall, UniVersity of California at DaVis, One Shields AVenue, DaVis, California 95616, Jack, Nanostructured Energy ConVersion Technology and Research (NECTAR), AdVanced Studies Laboratories, Uni

  17. Published: May 05, 2011 r 2011 American Chemical Society 2311 dx.doi.org/10.1021/nl200543v |Nano Lett. 2011, 11, 23112317

    E-Print Network [OSTI]

    Mitin, Vladimir

    Street, Suite 326, Arlington, Virginia 22203, United States bS Supporting Information Quantum dot solar cells have been attractive for solar cell applications due to their ability to enhance light absorption Lett. 2011, 11, 23112317 LETTER pubs.acs.org/NanoLett Strong Enhancement of Solar Cell Efficiency Due

  18. [15] A. D. McFarland, R. P. Van Duyne, Nano Lett. 2003, 3, 1057. [16] D. A. Schultz, Curr. Opin. Biotech. 2003, 14, 13.

    E-Print Network [OSTI]

    Mather, Patrick T.

    . Sonnichsen, A. P. Alivisatos, Nano Lett. 2005, 5, 301. Welded Electrochromic Conductive Polymer Nanofibers Marquez, Patrick T. Mather, and Gregory A. Sotzing* With the availability of electrochromic conjugated poly- mers[1] exhibiting transitions of the three primary colors, full- color electrochromic displays

  19. Oral: Division of Polymeric Materials: Science & Engineering: Nano-and Micro-Scale Porous Polymer-Based Systems. Synthesis of [Bis(pyridine)salen]ZnII

    E-Print Network [OSTI]

    Oral: Division of Polymeric Materials: Science & Engineering: Nano- and Micro-Scale Porous Polymer envisioned for these polymeric materials, enantioselectivity is one of the most challenging to incorporate.4/separation are often anticipated.5,6 Ideally, porous polymeric materials with chiral functionalities along their pores

  20. Published: July 05, 2011 r 2011 American Chemical Society 3214 dx.doi.org/10.1021/nl2014845 |Nano Lett. 2011, 11, 32143220

    E-Print Network [OSTI]

    Lin, Zhiqun

    Lett. 2011, 11, 3214­3220 LETTER pubs.acs.org/NanoLett High Efficiency Dye-Sensitized Solar Cells BasedS Supporting Information Dye-sensitized solar cells (DSSCs) are widely recognized as a promising alternative,8,27 Herein, we report high efficiency dye-sensitized nanotube solar cells in a backside illumination mode