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1

FRV SI Transport Solar LP | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating Solar Power Basics (TheEtelligence (Smart Grid Project)CompanyFEMFRED

2

si  

Office of Legacy Management (LM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarlyEnergyDepartment ofDepartment ofof EnergyYou$0.C.Greentnv~ronmenrar ivronrrorrngAC T S3si :ri;

3

Fabrication and electrical transport properties of binary Co-Si nanostructures prepared by focused electron beam-induced deposition  

SciTech Connect (OSTI)

CoSi-C binary alloys have been fabricated by focused electron beam-induced deposition by the simultaneous use of dicobaltoctacarbonyl, Co{sub 2}(CO){sub 8}, and neopentasilane, Si{sub 5}H{sub 12}, as precursor gases. By varying the relative flux of the precursors, alloys with variable chemical composition are obtained, as shown by energy dispersive x-ray analysis. Room temperature electrical resistivity measurements strongly indicate the formation of cobalt silicide and cobalt disilicide nanoclusters embedded in a carbonaceous matrix. Temperature-dependent electrical conductivity measurements show that the transport properties are governed by electron tunneling between neighboring CoSi or CoSi{sub 2} nanoclusters. In particular, by varying the metal content of the alloy, the electrical conductivity can be finely tuned from the insulating regime into the quasi-metallic tunneling coupling regime.

Porrati, F.; Huth, M. [Physikalisches Institut, Goethe-Universitaet, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main (Germany); Kaempken, B.; Terfort, A. [Institut fr Anorganische und Analytische Chemie, Goethe-Universitaet, Max-von-Laue-Str. 7, D-60438 Frankfurt am Main (Germany)

2013-02-07T23:59:59.000Z

4

Device fabrication and transport measurements of FinFETs built with 28Si SOI wafers towards donor qubits in silicon  

SciTech Connect (OSTI)

We report fabrication of transistors in a FinFET geometry using isotopically purified silicon-28 -on-insulator (28-SOI) substrates. Donor electron spin coherence in natural silicon is limited by spectral diffusion due to the residual 29Si nuclear spin bath, making isotopically enriched nuclear spin-free 28Si substrates a promising candidate for forming spin quantum bit devices. The FinFET architecture is fully compatible with single-ion implant detection for donor-based qubits, and the donor spin-state readout through electrical detection of spin resonance. We describe device processing steps and discuss results on electrical transport measurements at 0.3 K.

Lo, Cheuk Chi; Persaud, Arun; Dhuey, Scott; Olynick, Deirdre; Borondics, Ferenc; Martin, Michael C.; Bechtel, Hans A.; Bokor, Jeffrey; Schenkel, Thomas

2009-06-10T23:59:59.000Z

5

Optical and carrier transport properties of graphene oxide based crystalline-Si/organic Schottky junction solar cells  

SciTech Connect (OSTI)

We investigated the graphene oxide (GO) based n-type crystalline silicon (c-Si)/conductive poly(ethylene dioxythiophene):poly(styrenesulfonate)(PEDOT:PSS) Schottky junction devices with optical characterization and carrier transport measurement techniques. The optical transmittance in the UV region decreased markedly for the films with increasing the concentration of GO whereas it increased markedly in the visible-infrared regions. Spectroscopic ellipsometry revealed that the ordinary and extraordinary index of refraction increased with increasing the concentration of GO. The hole mobility also increased from 1.14 for pristine film to 1.85 cm{sup 2}/V s for the 12–15?wt. % GO modified film with no significant increases of carrier concentration. The highest conductivity was found for a 15?wt. % GO modified PEDOT:PSS film: the c-Si/PEDOT:PSS:GO device using this sample exhibited a relatively high power conversion efficiency of 11.04%. In addition, the insertion of a 2–3?nm-thick GO thin layer at the c-Si/PEDOT:PSS interface suppressed the carrier recombination efficiency of dark electron and photo-generated hole at the anode, resulting in the increased photovoltaic performance. This study indicates that the GO can be good candidates for hole transporting layer of c-Si/PEDOT:PSS Schottky junction solar cell.

Khatri, I.; Tang, Z.; Hiate, T.; Liu, Q.; Ishikawa, R.; Ueno, K.; Shirai, H. [Graduate School of Science and Engineering, Saitama University, Saitama 338-8570 (Japan)

2013-12-21T23:59:59.000Z

6

Two-color optical technique for characterization of x-ray radiation-enhanced electron transport in SiO2  

E-Print Network [OSTI]

Two-color optical technique for characterization of x-ray radiation-enhanced electron transport the oxide.2 Presently, characterization of radiation damage in Si/SiO2 systems is usually accomplished used to provide additional insight into radiation damage in ultrathin oxides.3 These measure- ments

Pantelides, Sokrates T.

7

Nanoscale current transport in epitaxial SrTiO3 on n -Si investigated  

E-Print Network [OSTI]

,2 as a candidate for application as a high- dielectric gate oxide replacement for SiO2 in future metal and forms a submonolayer silicide tem- plate. This silicide template is more stable to oxygen expo- sure

Yu, Edward T.

8

Magneto-transport properties of oriented Mn{sub 2}CoAl films sputtered on thermally oxidized Si substrates  

SciTech Connect (OSTI)

Spin gapless semiconductors are interesting family of materials by embracing both magnetism and semiconducting due to their unique band structure. Its potential application in future spintronics requires realization in thin film form. In this Letter, we report fabrication and transport properties of spin gapless Mn{sub 2}CoAl films prepared on thermally oxidized Si substrates by magnetron sputtering deposition. The films deposited at 673?K are well oriented to (001) direction and display a uniform-crystalline surface. Magnetotransport measurements on the oriented films reveal a semiconducting-like resistivity, small anomalous Hall conductivity, and linear magnetoresistance representative of the transport signatures of spin gapless semiconductors. The magnetic properties of the films have also been investigated and compared to that of bulk Mn{sub 2}CoAl, showing small discrepancy induced by the composition deviation.

Xu, G. Z.; Du, Y.; Zhang, X. M.; Liu, E. K.; Wang, W. H., E-mail: wenhong.wang@iphy.ac.cn; Wu, G. H. [State Key Laboratory for Magnetism, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China); Zhang, H. G. [College of Materials Science and Engineering, Beijing University of Technology, Beijing 100124 (China)

2014-06-16T23:59:59.000Z

9

Phase-Controlled Growth of Metastable Fe5Si3 Nanowires by a Vapor Transport Method  

E-Print Network [OSTI]

to produce other metal-rich silicide nanostructures for future spintronic devices. Introduction Iron. Depending on the concentration ratio of FeI2(g) to SiI4(g), different phases of iron silicides are formed. The growth of nanowires is facilitated by the initial nucleation of silicide particles on the substrate

Kim, Bongsoo

10

Enhanced Hole Transport in Short-Channel Strained-SiGe p-MOSFETs  

E-Print Network [OSTI]

Hole mobility and velocity are extracted from scaled strained-Si[subscript 0.4]5Ge[subscript 0.55]channel p-MOSFETs on insulator. Devices have been fabricated with sub-100-nm gate lengths, demonstrating hole mobility and ...

Gomez, Leonardo

11

AC transport in p-Ge/GeSi quantum well in high magnetic fields  

SciTech Connect (OSTI)

The contactless surface acoustic wave technique is implemented to probe the high-frequency conductivity of a high-mobility p-Ge/GeSi quantum well structure in the regime of integer quantum Hall effect (IQHE) at temperatures 0.3–5.8 K and magnetic fields up to 18 T. It is shown that, in the IQHE regime at the minima of conductivity, holes are localized and ac conductivity is of hopping nature and can be described within the “two-site” model. The analysis of the temperature and magnetic-field-orientation dependence of the ac conductivity at odd filing factors enables us to determine the effective hole g-factor, |g{sub zz}|?4.5. It is shown that the in-plane component of the magnetic field leads to a decrease in the g-factor as well as increase in the cyclotron mass, which is explained by orbital effects in the complex valence band of germanium.

Drichko, I. L.; Malysh, V. A.; Smirnov, I. Yu.; Golub, L. E.; Tarasenko, S. A. [A.F. Ioffe Physical Technical Institute of Russian Academy of Sciences, 194021 St. Petersburg (Russian Federation); Suslov, A. V. [National High Magnetic Field Laboratory, Tallahassee, FL 32310 (United States); Mironov, O. A. [Warwick SEMINANO R and D Center, University of Warwick Science Park, Coventry CV4 7EZ (United Kingdom); Kummer, M.; Känel, H. von [Laboratorium für Festkörperphysik ETH Zürich, CH-8093 Zürich (Switzerland)

2014-08-20T23:59:59.000Z

12

Influence of Si Co-doping on electrical transport properties of magnesium-doped boron nanoswords  

SciTech Connect (OSTI)

Magnesium-doped boron nanoswords were synthesized via a thermoreduction method. The as-prepared nanoswords are single crystalline and {beta}-rhombohedral ({beta}-rh) phase. Electrical transport measurements show that variable range hopping conductivity increases with temperature, and carrier mobility has a greater influence than carrier concentration. These results are consistent with the three dimensional Mott's model (M. Cutler and N. F. Mott, Phys. Rev. 181, 1336 (1969)) besides a high density of localized states at the Fermi level compared with bulk {beta}-rh boron. Conductivity of Mg-doped boron nanoswords is significantly lower than that of ''pure'' (free of magnesium) boron nanoswords. Electron energy loss spectroscopy studies confirm that the poorer conductivity arises from silicon against magnesium doping.

Tian Yuan; Lu Hongliang; Tian Jifa; Li Chen; Hui Chao; Shi Xuezhao; Huang Yuan; Shen Chengmin; Gao Hongjun [Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)

2012-03-05T23:59:59.000Z

13

Pauli spin blockade and lifetime-enhanced transport in a Si/SiGe double quantum dot C. B. Simmons,1  

E-Print Network [OSTI]

relatively small atomic mass. Isotopic purification could produce devices with excellent qualities electrostatic gating, long coherence times, and well-known methods for large-scale fabrication.1­5 Spin isotope has nuclear spin zero, and because Si has a relatively small spin- orbit coupling, because of its

Coppersmith, Susan N.

14

Control of morphology for enhanced electronic transport in PECVD-grown a-Si : H Thin Films  

E-Print Network [OSTI]

Solar cells have become an increasingly viable alternative to traditional, pollution causing power generation methods. Although crystalline silicon (c-Si) modules make up most of the market, thin films such as hydrogenated ...

Castro Galnares, Sebastián

2010-01-01T23:59:59.000Z

15

Transportation  

E-Print Network [OSTI]

Transportation in ancient Egypt entailed the use of boats2007 Land transport in Roman Egypt: A study of economics andDieter 1991 Building in Egypt: Pharaonic stone masonry. New

Vinson, Steve

2013-01-01T23:59:59.000Z

16

Heteroepitaxial growth of GaN/Si (111) junctions in ammonia-free atmosphere: Charge transport, optoelectronic, and photovoltaic properties  

SciTech Connect (OSTI)

We report the catalyst-free growth of gallium nitride (GaN) nanostructures on n-Si (111) substrates using physical vapor deposition via thermal evaporation of GaN powder at 1150 Degree-Sign C in the absence of NH{sub 3} gas. Scanning electron microscopy and energy dispersive x-ray analysis indicate that the growth rate of GaN nanostructures varies with deposition time. Photoluminescence spectra showed the suppression of the UV emission and the enhancement of the visible band emission with increasing the deposition time. The fabricated GaN nanostructures exhibited p-type behavior at the GaN/Si interface, which can be related to the diffusion of Ga into the Si substrate. The obtained lowest reflection and highest transmittance over a wide wavelength range (450-750 nm) indicate the high quality of the fabricated GaN films. Hall-effect measurements showed that all fabricated films have p-type behavior with decreasing electron concentration from 10{sup 21} to 10{sup 12} cm{sup -3} and increasing the electron mobility from 50 to 225 cm{sup 2}/V s with increasing the growth time. The fabricated solar cell based on the 1 h-deposited GaN nanostructures on n-Si (111) substrate showed a well-defined rectifying behavior with a rectification ratio larger than 8.32 Multiplication-Sign 10{sup 3} in dark. Upon illumination (30 mW/cm{sup 2}), the 1 h-deposited heterojunction solar cell device showed a conversion efficiency of 5.78%. The growth of GaN in the absence of NH{sub 3} gas has strong effect on the morphological, optical, and electrical properties and consequently on the efficiency of the solar cell devices made of such layers.

Saron, K. M. A.; Hashim, M. R. [Nano-Optoelectronics Research and Technology Laboratory, School of Physics, Universiti Sains Malaysia, Penang 11800 (Malaysia); Allam, Nageh K. [Energy Materials Laboratory (EML), Department of Physics, School of Sciences and Engineering, The American University in Cairo, New Cairo 11835 (Egypt)

2013-03-28T23:59:59.000Z

17

Interfacial Layer Growth Condition Dependent Carrier Transport Mechanisms in HfO2/SiO2 Gate Stacks  

SciTech Connect (OSTI)

The temperature and field dependent leakage current in HfO{sub 2}/SiO{sub 2} gate stack for in situ steam grown and chemical interfacial layers (ILs) are studied in the temperature range of 20 C to 105 C. Poole-Frenkel mechanism in high field whereas Ohmic conduction in low field region are dominant for both devices. Leakage current decreases whereas both trap energy level ({phi}{sub t}) and activation energy (E{sub a}) increase for chemically grown IL devices. The trap level energy, ({phi}{sub t}) -0.2 eV, indicates that doubly charged oxygen vacancies (V{sup 2-}) are the active electron traps which contribute to the leakage current in these gate stacks.

Sahoo, S. K.; Misra, D.

2012-06-04T23:59:59.000Z

18

Transportation  

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

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19

FRV formerly Fotowatio Energia Solar SL | 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 has beenFfe2fb55-352f-473b-a2dd-50ae8b27f0a6 NoSan Leandro,LawFEMA -Single-Well andFRED+free

20

FRV USA formerly Fotowatio Renewable Ventures LLC | 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:011-DNA Jump37. It isInformationexplains a4Evendale,OpenFAOSTATOpenMaui AreaUSA

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Extraction of Spin Polarization of Bulk and Measurement of Transport Properties of Thin GdxSi1-x Near the Metal-Insulator Transition  

E-Print Network [OSTI]

-) gadoliniumxsilicon1-x (GdxSi1-x) as a counter electrode (Al/Al2O3/a-GdxSi1-x planar tunnel junction measured at T = 25 mK and H less than or equal to 3.0 T) in the quantum critical regime (QCR). The analytical solution is valid in the whole regime of Abrikosov...

Srivastava, Raj Vibhuti A.

2010-07-14T23:59:59.000Z

22

Charge transport properties of p-CdTe/n-CdTe/n{sup +}-Si diode-type nuclear radiation detectors based on metalorganic vapor-phase epitaxy-grown epilayers  

SciTech Connect (OSTI)

Charge transport properties of p-CdTe/n-CdTe/n{sup +}-Si diode-type nuclear radiation detectors, fabricated by growing p-and n-type CdTe epilayers on (211) n{sup +}-Si substrates using metalorganic vapor-phase epitaxy (MOVPE), were studied by analyzing current-voltage characteristics measured at various temperatures. The diode fabricated shows good rectification properties, however, both forward and reverse biased currents deviate from their ideal behavior. The forward current exhibits typical feature of multi-step tunneling at lower biases; however, becomes space charge limited type when the bias is increased. On the other hand, the reverse current exhibits thermally activated tunneling-type current. It was found that trapping centers at the p-CdTe/n-CdTe junction, which were formed due to the growth induced defects, determine the currents of this diode, and hence limit the performance of the nuclear radiation detectors developed.

Niraula, M.; Yasuda, K.; Wajima, Y.; Yamashita, H.; Tsukamoto, Y.; Suzuki, Y.; Matsumoto, M.; Takai, N.; Tsukamoto, Y.; Agata, Y. [Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555 (Japan)] [Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466-8555 (Japan)

2013-10-28T23:59:59.000Z

23

Junction Transport in Epitaxial Film Silicon Heterojunction Solar Cells: Preprint  

SciTech Connect (OSTI)

We report our progress toward low-temperature HWCVD epitaxial film silicon solar cells on inexpensive seed layers, with a focus on the junction transport physics exhibited by our devices. Heterojunctions of i/p hydrogenated amorphous Si (a-Si) on our n-type epitaxial crystal Si on n++ Si wafers show space-charge-region recombination, tunneling or diffusive transport depending on both epitaxial Si quality and the applied forward voltage.

Young, D. L.; Li, J. V.; Teplin, C. W.; Stradins, P.; Branz, H. M.

2011-07-01T23:59:59.000Z

24

PARALLEL COMPUTATION OF THE BOLTZMANN TRANSPORT EQUATION FOR MICROSCALE HEAT  

E-Print Network [OSTI]

silicon Ă°SiĂ? and silicon dioxide Ă°SiO2Ă?. The equation of phonon radiative transport Ă°ERPTĂ?, in itsPARALLEL COMPUTATION OF THE BOLTZMANN TRANSPORT EQUATION FOR MICROSCALE HEAT TRANSFER fundamental Boltzmann transport equations have been reported [3, 7, 8]. This has consequently instigated a re

Miller, Richard S.

25

Resonant tunneling with high peak to valley current ratio in SiO{sub 2}/nc-Si/SiO{sub 2} multi-layers at room temperature  

SciTech Connect (OSTI)

We have investigated carrier transport in SiO{sub 2}/nc-Si/SiO{sub 2} multi-layers by room temperature current-voltage measurements. Resonant tunneling signatures accompanied by current peaks are observed. Carrier transport in the multi-layers were analyzed by plots of ln(I/V{sup 2}) as a function of 1/V and ln(I) as a function of V{sup 1/2}. Results suggest that besides films quality, nc-Si and barrier sub-layer thicknesses are important parameters that restrict carrier transport. When thicknesses are both small, direct tunneling dominates carrier transport, resonant tunneling occurs only at certain voltages and multi-resonant tunneling related current peaks can be observed but with peak to valley current ratio (PVCR) values smaller than 1.5. When barrier thickness is increased, trap-related and even high field related tunneling is excited, causing that multi-current peaks cannot be observed clearly, only one current peak with higher PVCR value of 7.7 can be observed. While if the thickness of nc-Si is large enough, quantum confinement is not so strong, a broad current peak with PVCR value as high as 60 can be measured, which may be due to small energy difference between the splitting energy levels in the quantum dots of nc-Si. Size distribution in a wide range may cause un-controllability of the peak voltages.

Chen, D. Y., E-mail: cdy7659@126.com [Department of Physics, Nanjing National Laboratory of Microstructures and Key Laboratory of Advanced Photonic and Electronic, materials, Nanjing University, Nanjing 210093 (China); Nanjing University of posts and Telecommunications, Nanjing 210046 (China); Sun, Y.; He, Y. J. [Nanjing University of posts and Telecommunications, Nanjing 210046 (China); Xu, L.; Xu, J. [Department of Physics, Nanjing National Laboratory of Microstructures and Key Laboratory of Advanced Photonic and Electronic, materials, Nanjing University, Nanjing 210093 (China)

2014-01-28T23:59:59.000Z

26

Translocation and encapsulation of siRNA inside carbon nanotubes  

E-Print Network [OSTI]

We report spontaneous translocation of small interfering RNA (siRNA) inside carbon nanotubes (CNTs) of various diameters and chirality using all atom molecular dynamics (MD) simulations with explicit solvent. We use Umbrella sampling method to calculate the free energy landscape of the siRNA entry and translocation event. Free energy profiles shows that siRNA gains free energy while translocating inside CNT and barrier for siRNA exit from CNT ranges from 40 to 110 kcal/mol depending on CNT chirality and salt concentration. The translocation time \\tau decreases with the increase of CNT diameter with a critical diameter of 24 \\AA for the translocation. In contrast, double strand DNA (dsDNA) of the same sequence does not translocate inside CNT due to large free energy barrier for the translocation. This study helps in understanding the nucleic acid transport through nanopores at microscopic level and may help designing carbon nanotube based sensor for siRNA.

Santosh Mogurampelly; Prabal K. Maiti

2012-12-11T23:59:59.000Z

27

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

E-Print Network [OSTI]

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

Allen, Leslie H.

28

Transportation Services  

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

Transportation Services Transporting nuclear materials within the United States and throughout the world is a complicated and sometimes highly controversial effort requiring...

29

Local Transportation  

E-Print Network [OSTI]

Local Transportation. Transportation from the Airport to Hotel. There are two types of taxi companies that operate at the airport: special and regular taxis (

30

Greening Transportation  

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

Transportation Goal 2: Greening Transportation LANL supports and encourages employees to reduce their personal greenhouse gas emissions by offering various commuting and work...

31

Chamber transport  

SciTech Connect (OSTI)

Heavy ion beam transport through the containment chamber plays a crucial role in all heavy ion fusion (HIF) scenarios. Here, several parameters are used to characterize the operating space for HIF beams; transport modes are assessed in relation to evolving target/accelerator requirements; results of recent relevant experiments and simulations of HIF transport are summarized; and relevant instabilities are reviewed. All transport options still exist, including (1) vacuum ballistic transport, (2) neutralized ballistic transport, and (3) channel-like transport. Presently, the European HIF program favors vacuum ballistic transport, while the US HIF program favors neutralized ballistic transport with channel-like transport as an alternate approach. Further transport research is needed to clearly guide selection of the most attractive, integrated HIF system.

OLSON,CRAIG L.

2000-05-17T23:59:59.000Z

32

X-Ray And Polarized Neutron Reflectometry: Characterization Of Si/Co/Si And Si/Ni/Si Systems  

SciTech Connect (OSTI)

Technologically important metal silicides formed through interdiffusion in metal/Si systems has been probed using two complementary techniques viz. x-ray reflectivity (XRR) and polarized neutron reflectivity (PNR). Both structural and magnetic characterization with good depth resolution has been achieved in these systems. We have studied two systems Si/Co/Si and Si/Ni/Si which relate to important applications in ferromagnetic/ non-magnetic semiconductor layered structures for memory devices.

Bhattacharya, Debarati; Basu, Saibal [Solid State Physics Division, Bhabha Atomic Research Center, Mumbai, Maharastra 400085 (India); Poswal, A. K. [Applied Spectroscopy Division, Bhabha Atomic Research Center, Mumbai, Maharastra 400085 (India); Roy, S.; Dev, B. N. [Department of Materials Science, Indian Association for the Cultivation of Science, 2A and 2B Raja S. C. Mullick Road, Jadavpur, Kolkata 700032 (India)

2010-12-01T23:59:59.000Z

33

Mass of Si-24  

E-Print Network [OSTI]

). ~B. E. Tribbl, J. D. Cossairt, D. P. May, and B. A, Kenefick, Phys. Bev. C 16, 1835 (1977). B. E. Tribble, J. D. Cossairt, and B. A. Kenefick, Phys. Bev. C 15, 2028 (1977). B. E. Tribble, B. A. Kenefick, and B. L. Spross, Phys. Bev. C 13, 50...PHYSICAL REVIEW C VOLUME 22, NUMBER 1 JULY 1980 Mass of Si R. E. Tribble, D. M. Tanner, and A. F. Zeller* Cyclotron Institute and Physics Department, Texas A&M University, College Station, Texas 77843 (Received 11 January 1980) The Si( He, 'He...

Tribble, Robert E.; Tanner, D. M.; Zeller, A. F.

1980-01-01T23:59:59.000Z

34

Features of conduction mechanisms in Si/oligo-{beta}-naphthol/metal heterostructures  

SciTech Connect (OSTI)

Conduction mechanisms in Si-polymer-metal heterostructures with oligo-{beta}-naphthol as a wide band-gap polymer have been studied. The results obtained are explained within the models of hopping transport via trap levels, Schottky emission, and field tunneling emission. Different charge transport mechanisms operate in different temperature ranges and under different electric fields.

Hasannli, Sh. M., E-mail: Hasanli_sh@rambler.ru; Mursakulov, N. N.; Samedova, U. F.; Abdulzade, N. N.; Mamedov, B. A. [National Academy of Sciences of Azerbaijan, Institute of Physics (Azerbaijan); Guseynov, R. K. [Ganja State University (Azerbaijan)

2010-07-15T23:59:59.000Z

35

Transportation Security  

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

Preliminary Draft - For Review Only 1 Transportation Security Draft Annotated Bibliography Review July 2007 Preliminary Draft - For Review Only 2 Work Plan Task * TEC STG Work...

36

Computational Transportation  

E-Print Network [OSTI]

), in-vehicle computers, and computers in the transportation infrastructure are integrated ride- sharing, real-time multi-modal routing and navigation, to autonomous/assisted driving

Illinois at Chicago, University of

37

Properties of planar Nb/{alpha}-Si/Nb Josephson junctions with various degrees of doping of the {alpha}-Si layer  

SciTech Connect (OSTI)

The properties of Nb/{alpha}-Si/Nb planar Josephson junctions with various degrees of doping of the amorphous silicon layer are experimentally studied. Tungsten is used as a doping impurity. The properties of the Josephson junctions are shown to change substantially when the degree of doping of the {alpha}-Si layer changes: a current transport mechanism and the shape of the current-voltage characteristic of the junctions change. Josephson junctions with SNS-type conduction are formed in the case of a fully degenerate {alpha}-Si layer. The properties of such junctions are described by a classical resistive model. Josephson junctions with a resonance mechanism of current transport through impurity centers are formed at a lower degree of doping of the {alpha}-Si layer. The high-frequency properties of such junctions are shown to change. The experimental results demonstrate that these junctions are close to SINIS-type Josephson junctions.

Gudkov, A. L., E-mail: gudkov@niifp.ru [Lukin Scientific Research Institute of Physical Problems, ZAO Kompelst (Russian Federation); Kupriyanov, M. Yu. [Moscow State University, Skobeltsyn Institute of Nuclear Physics (Russian Federation); Samus', A. N. [Lukin Scientific Research Institute of Physical Problems, ZAO Kompelst (Russian Federation)

2012-05-15T23:59:59.000Z

38

Progress in blanket designs using SiCf/SiC composites L. Giancarli a,  

E-Print Network [OSTI]

Progress in blanket designs using SiCf/SiC composites L. Giancarli a, 1, H. Golfier b , S. Nishio c the use of SiCf/SiC composite as structural material for fusion power reactor breeding blanket. SeveralCf/SiC. # 2002 Published by Elsevier Science B.V. Keywords: Blanket designs; SiCf/SiC composites; Self

Raffray, A. René

39

Si Wu | 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 ConchasPassiveSubmitted forHighlightsSeminars SeminarsO'LearyGlobalMarketSi Wu d3p754 Primary

40

Si Wu | 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 MayAtmosphericNuclear Security Administrationcontroller systemsBi (2)Sharing Smart GridShift End ShiftShowerheadsShutthaSi Wu

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Highly Confined Photon Transport in Subwavelength Metallic Slot Waveguides  

E-Print Network [OSTI]

was deposited on one side of a free-standing Si3N4 membrane. Using focused ion- beam milling, wire waveguidesHighly Confined Photon Transport in Subwavelength Metallic Slot Waveguides J. A. Dionne,*, H. J and electronic components. Although optical interconnects exhibit a large bandwidth for signal transport, minimum

Atwater, Harry

42

Transportation Market Distortions  

E-Print Network [OSTI]

of Highways, Volpe National Transportation Systems Center (Evaluating Criticism of Transportation Costing, VictoriaFrom Here: Evaluating Transportation Diversity, Victoria

Litman, Todd

2006-01-01T23:59:59.000Z

43

Axial Ge/Si nanowire heterostructure tunnel FETs  

SciTech Connect (OSTI)

The vapor-liquid-solid (VLS) growth of semiconductor nanowires allows doping and composition modulation along their axis and the realization of axial 1 D heterostructures. This provides additional flexibility in energy band-edge engineering along the transport direction which is difficult to attain by planar materials growth and processing techniques. We report here on the design, growth, fabrication, and characterization of asymmetric heterostructure tunnel field-effect transistors (HTFETs) based on 100% compositionally modulated Si/Ge axial NWs for high on-current operation and low ambipolar transport behavior. We discuss the optimization of band-offsets and Schottky barrier heights for high performance HTFETs and issues surrounding their experimental realization. Our HTFET devices with 10 nm PECVD SiN{sub x} gate dielectric resulted in a measured current drive exceeding 100 {mu}A/{mu}m (I/{pi}D) and 10{sup 5} I{sub on}/I{sub off} ratios.

Picraux, Sanuel T [Los Alamos National Laboratory; Daych, Shadi A [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

44

Ge/Si core/multi shell heterostructure FETs  

SciTech Connect (OSTI)

Concentric heterostructured materials provide numerous design opportunities for engineering strain and interfaces, as well as tailoring energy band-edge combinations for optimal device performance. Key to the realization of such novel device concepts is the complete understanding and full control over their growth, crystal structure, and hetero-epitaxy. We report here on a new route for synthesizing Ge/Si core/multi-shell heterostructure nanowires that eliminate Au seed diffusion on the nanowire sidewalls by engineering the interface energy density difference. We show that such control over core/shell synthesis enable experimental realization of heterostructure FET devices beyond those available in the literature with enhanced transport characteristics. We provide a side-by-side comparison on the transport properties of Ge/Si core/multi-shell nanowires grown with and without Au diffusion and demonstrate heterostructure FETs with drive currents that are {approx} 2X higher than record results for p-type FETs.

Picraux, Samuel T [Los Alamos National Laboratory; Dayeh, Shadi A [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

45

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

In the present quarter, experiments are presented on ceramic/metal interactions of Zirconia/Ni-B-Si system and with a thin Ti coating deposited on zirconia surface. Processing of perovskites of LSC, LSF and LSCF composition for evaluation of mechanical properties as a function of environment are begun. The studies are to be in parallel with LSFCO composition to characterize the segregation of cations and slow crack growth in environmental conditions. La{sub 1-x}Sr{sub x}FeO{sub 3-d} has also been characterized for paramagnetic ordering at room temperature and the evolution of magnetic moments as a function of temperature are investigated. Investigation on the thermodynamic properties of the membrane materials are continued to develop a complete model for the membrane transport.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2003-01-01T23:59:59.000Z

46

Magnesium Silicate Dissolution Investigated by 29Si MAS, 1H-29Si...  

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

Silicate Dissolution Investigated by 29Si MAS, 1H-29Si CP MAS, 25Mg QCPMG, and 1H-25Mg CP QCPMG NMR. Magnesium Silicate Dissolution Investigated by 29Si MAS, 1H-29Si CP MAS, 25Mg...

47

Synthesis and Characterization of Structured Si-Carbon Nanocomposite...  

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

nanoparticles with controlled size and synthesized Si-carbon composites, including Si-graphene and Si@hollow carbon. * Synthesized new polymer binders for Si-based anodes. *...

48

Neurotransmitter Transporters  

E-Print Network [OSTI]

at specialized synaptic junctions where electrical excitability in the form of an action potential is translated membrane of neurons and glial cells. Transporters harness electrochemical gradients to force the movement.els.net #12;The response produced when a transmitter interacts with its receptors, the synaptic potential

Bergles, Dwight

49

Composite oxygen ion transport element  

SciTech Connect (OSTI)

A composite oxygen ion transport element that has a layered structure formed by a dense layer to transport oxygen ions and electrons and a porous support layer to provide mechanical support. The dense layer can be formed of a mixture of a mixed conductor, an ionic conductor, and a metal. The porous support layer can be fabricated from an oxide dispersion strengthened metal, a metal-reinforced intermetallic alloy, a boron-doped Mo.sub.5Si.sub.3-based intermetallic alloy or combinations thereof. The support layer can be provided with a network of non-interconnected pores and each of said pores communicates between opposite surfaces of said support layer. Such a support layer can be advantageously employed to reduce diffusion resistance in any type of element, including those using a different material makeup than that outlined above.

Chen, Jack C. (Getzville, NY); Besecker, Charles J. (Batavia, IL); Chen, Hancun (Williamsville, NY); Robinson, Earil T. (Mentor, OH)

2007-06-12T23:59:59.000Z

50

Group velocities in coplanar strip transmission lines on Si and Si/SiO2 /Si substrates measured using differential electro-optic sampling  

E-Print Network [OSTI]

Group velocities in coplanar strip transmission lines on Si and Si/SiO2 /Si substrates measured 1996; accepted for publication 26 August 1996 The group velocities in coplanar strip transmission lines-9 Velocity measurements have been previously carried out for coplanar transmission lines on a variety

51

Characteristics of phase nucleation and growth during oriented crystallization of alloys of the Si-TaSi/sub 2/ and Si-NbSi/sub 2/ eutectic systems  

SciTech Connect (OSTI)

The authors investigate the effect of the nucleation conditions and the initial concentration of the components on the nature of the change in the phase composition and structure along the length of the directionally crystallized bars of alloys in the Si-TaSi/sub 2/ and Si-NbSi/sub 2/ eutectic systems. The compositions of the investigated alloys are given. The starting materials were silicon of semiconductor purity, tantalum, and niobium produced by electron beam melting. The alloys were crystallized directionally by the Czochralski method. The nature of the structure and the volume ratio of the phases in the investigated alloys depend significantly on the type of seed, i.e., on the nucleation conditions of the eutectic grain. The basic phases in the eutectic alloys of the Si-TaSi/sub 2/ and Si-NbSi/sub 2/ systems are the disilicides TaSi/sub 2/ and NbSi/sub 2/ respectively.

Grabovetskaya, G.P.; Butkevich, L.M.

1987-07-01T23:59:59.000Z

52

3C-SiC Films on Si for MEMS Applications: Mechanical Properties , G. Kravchenko2  

E-Print Network [OSTI]

diamond tip. These results indicate that polycrystalline SiC thin films are attractive for MEMS. In addition, poly-crystalline 3C- SiC was also grown on (100)Si so that a comparison with monocrystaline 3C-SiC, also grown on (100)Si, could be made. The mechanical properties of single crystal and polycrystalline 3

Volinsky, Alex A.

53

NREL: Transportation Research - Transportation and Hydrogen Newsletter...  

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

The Future of Sustainable Transportation This is the January 2015 issue of the Transportation and Hydrogen Newsletter. Illustration of an electric vehicle Illustration of an...

54

Commercialization potential of compositionally graded Ge - Si??x?Gex? - Si substrates for solar applications  

E-Print Network [OSTI]

This project considers the potential of Ge - Si??x?Gex? - Si substrates for solar applications. The use of compositionally graded substrates to achieve heterointegration across different materials platforms such as Si, Ge ...

Goh, Johnathan Jian Ming

2006-01-01T23:59:59.000Z

55

Crumpled Graphene-Encapsulated Si Nanoparticles for Lithium Ion Battery Anodes  

E-Print Network [OSTI]

efficiency. SECTION: Energy Conversion and Storage; Energy and Charge Transport Silicon is a promising highCrumpled Graphene-Encapsulated Si Nanoparticles for Lithium Ion Battery Anodes Jiayan Luo, Xin Zhao improved performance as Li ion battery anodes in terms of capacity, cycling stability, and Coulombic

Huang, Jiaxing

56

Greening Transportation  

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 ProposedUsingFun with Big Sky LearningGetGraphene's 3D CounterpartDepartmentTransportation

57

Transportation Infrastructure  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen Owned SmallOf The 2012 Greenbuy3 Archive Transportation Fact of the Week

58

Microwave joining of SiC  

SciTech Connect (OSTI)

The purpose of this work is to optimize the properties of SiC-SiC joints made using microwave energy. The current focus is on identification of the most effective joining methods for scale-up to large tube assemblies, including joining using SiC produced in situ from chemical precursors. During FY 1996, a new microwave applicator was designed, fabricated and tested that provides the capability for vacuum baking of the specimens and insulation and for processing under inert environment. This applicator was used to join continuous fiber-reinforced (CFCC) SiC/SiC composites using a polymer precursor to form a SiC interlayer in situ.

Silberglitt, R.; Ahmad, I.; Tian, Y.L. [FM Technologies, Inc., Fairfax, VA (United States)] [and others

1997-04-01T23:59:59.000Z

59

Research on the stability, electronic properties, and structure of a-Si:H and its alloys  

SciTech Connect (OSTI)

Objective is to obtain a comprehensive understanding of structure and electronic properties of a-Si:H as they apply to solar cells. First observations were of light enhancement and field suppression of H diffusion in a-Si:H. Theoretical studies were made of hydrogen density of states distribution and its relation to defect metastability. Reduced density of light induced defect is observed in a-Si:H deposited in a remote hydrogen plasma reactor at 400 C. Kinetics of metastable defect creation using forward bias in a p-i-n diode to induce defects were studied and compared to light-induced defect creation in the same devices. Studies were made of transport at high electric field and low temperature. Detailed studies were made of kinetics of dopant metastability in n-type and p-type a-Si:H.

Street, R.A.; Jackson, W.B.; Johnson, N.; Nebel, C.; Hack, M.; Santos, P.; Thompson, R.; Tsai, C.C.; Walker, J. (Xerox Palo Alto Research Center, CA (United States))

1992-12-01T23:59:59.000Z

60

Hot-Wire Deposition of Hydrogenated Nanocrystalline SiGe Films for Thin-Film Si Based Solar Cells  

E-Print Network [OSTI]

Hot-Wire Deposition of Hydrogenated Nanocrystalline SiGe Films for Thin-Film Si Based Solar Cells trapping, for the nc- Si:H absorber in the Si-based thin film solar cells. Furthermore, nc-Si:H is usually bandgap absorber in an a-Si/a-SiGe/nc-SiGe(nc- Si) triple-junction solar cell due to its higher optical

Deng, Xunming

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Gate Metal-Induced Diffusion and Interface Reactions in Hf Oxide Films on Si  

SciTech Connect (OSTI)

When metal electrodes are deposited on a high-{kappa} metal-oxide/SiO{sub 2}/Si stack, chemical interactions may occur both at the metal/high-{kappa} and the high-{kappa}/Si interfaces, causing changes in electrical performance. We report here results from medium energy ion scattering (MEIS) and x-ray photoelectron (XPS) studies of oxygen and silicon transport and interfacial layer reactions in multilayer gate stacks. Our results show that Ti deposition on HfO{sub 2}/SiO{sub 2}/Si stacks causes reduction of the SiO{sub 2} interfacial layer and (to a lesser extent) the HfO{sub 2} layer. Silicon atoms initially present in the interfacial SiO{sub 2} layer incorporate into the bottom of the high-{kappa} layer. Some evidence for titanium-silicon interdiffusion through the high-{kappa} film in the presence of a titanium gate in crystalline HfO{sub 2} films is also reported.

Goncharova, Lyudmila V.; Dalponte, Mateus; Celik, Ozgur; Garfunkel, Eric; Gustafsson, Torgny [Departments of Physics and Chemistry, and Laboratory for Surface Modification, Rutgers University, Piscataway, NJ 08854 (United States); Lysaght, Pat S.; Bersuker, Gennadi I. [Sematech, Austin, Texas 78741 (United States)

2007-09-26T23:59:59.000Z

62

Axial Ge/Si nanowire heterostructure tunnel FETs.  

SciTech Connect (OSTI)

Axial Ge/Si heterostructure nanowires (NWs) allow energy band-edge engineering along the axis of the NW, which is the charge transport direction, and the realization of asymmetric devices for novel device architectures. This work reports on two significant advances in the area of heterostructure NWs and tunnel FETs: (i) the realization of 100% compositionally modulated Si/Ge axial heterostructure NWs with lengths suitable for device fabrication and (ii) the design and implementation of Schottky barrier tunnel FETs on these NWs for high-on currents and suppressed ambipolar behavior. Initial prototype devices with 10 nm PECVD SiN{sub x} gate dielectric resulted in a very high current drive in excess of 100 {micro}A/{micro}m (I/{pi}D) and 10{sup 5} I{sub on}/I{sub off} ratios. Prior work on the synthesis of Ge/Si axial NW heterostructures through the VLS mechanism have resulted in axial Si/Si{sub 1-x}Ge{sub x} NW heterostructures with x{sub max} {approx} 0.3, and more recently 100% composition modulation was achieved with a solid growth catalyst. In this latter case, the thickness of the heterostructure cannot exceed few atomic layers due to the slow axial growth rate and concurrent radial deposition on the NW sidewalls leading to a mixture of axial and radial deposition, which imposes a big challenge for fabricating useful devices form these NWs in the near future. Here, we report the VLS growth of 100% doping and composition modulated axial Ge/Si heterostructure NWs with lengths appropriate for device fabrication by devising a growth procedure that eliminates Au diffusion on the NW sidewalls and minimizes random kinking in the heterostructure NWs as deduced from detailed microscopy analysis. Fig. 1 a shows a cross-sectional SEM image of epitaxial Ge/Si axial NW heterostructures grown on a Ge(111) surface. The interface abruptness in these Ge/Si heterostructure NWs is of the order of the NW diameter. Some of these NWs develop a crystallographic kink that is {approx}20{sup o} off the <111> axis at about 300 nm away from the Ge/Si interface. This provides a natural marker for placing the gate contact electrodes and gate metal at appropriate location for desired high-on current and reduced ambipolarity as shown in Fig. 2. The 1D heterostructures allow band-edge engineering in the transport direction, not easily accessible in planar devices, providing an additional degree of freedom for designing tunnel FETs (TFETs). For instance, a Ge tunnel source can be used for efficient electron/hole tunneling and a Si drain can be used for reduced back-tunneling and ambipolar behavior. Interface abruptness on the other hand (particularly for doping) imposes challenges in these structures and others for realizing high performance TFETs in p-i-n junctions. Since the metal-semiconductor contacts provide a sharp interface with band-edge control, we use properly designed Schottky contacts (aided by 3D Silvaco simulations) as the tunnel barriers both at the source and drain and utilize the asymmetry in the Ge/Si channel bandgap to reduce ambipolar transport behavior generally observed in TFETs. Fig. 3 shows the room-temperature transfer curves of a Ge/Si heterostructure TFET (H-TFET) for different V{sub DS} values showing a maximum on-current of {approx}7 {micro}A, {approx}170 mV/decade inverse subthreshold slope and 5 orders of magnitude I{sub on}/I{sub off} ratios for all V{sub DS} biases considered here. This high on-current value is {approx}1750 X higher than that obtained with Si p-i-n{sup +} NW TFETs and {approx}35 X higher than that obtained with CNT TFET. The I{sub on}/I{sub off} ratio and inverse subthreshold slope compare favorably to that of Si {approx} 10{sup 3} I{sub on}/I{sub off} and {approx} 800 mV/decade SS{sup -1} but lags behind those of CNT TFET due to poor PECVD nitride gate oxide quality ({var_epsilon}{sub r} {approx} 3-4). The asymmetry in the Schottky barrier heights used here eliminates the stringent requirements of abrupt doped interfaces used in p-i-n based TFETs, which is hard to achieve both in thin-film and

Dayeh, Shadi A. (Los Alamos National Laboratory); Gin, Aaron V.; Huang, Jian Yu; Picraux, Samuel Thomas (Los Alamos National Laboratory)

2010-03-01T23:59:59.000Z

63

SiNode Systems | Department of Energy  

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

University SiNode Systems is a battery materials venture developing silicon-graphene anodes for the next generation of lithium-ion batteries. SiNode anodes offer higher...

64

Transporting particulate material  

DOE Patents [OSTI]

A material transporting system comprises a material transporting apparatus (100) including a material transporting apparatus hopper structure (200, 202), which comprises at least one rotary transporting apparatus; a stationary hub structure (900) constraining and assisting the at least one rotary transporting apparatus; an outlet duct configuration (700) configured to permit material to exit therefrom and comprising at least one diverging portion (702, 702'); an outlet abutment configuration (800) configured to direct material to the outlet duct configuration; an outlet valve assembly from the material transporting system venting the material transporting system; and a moving wall configuration in the material transporting apparatus capable of assisting the material transporting apparatus in transporting material in the material transporting system. Material can be moved from the material transporting apparatus hopper structure to the outlet duct configuration through the at least one rotary transporting apparatus, the outlet abutment configuration, and the outlet valve assembly.

Aldred, Derek Leslie (North Hollywood, CA); Rader, Jeffrey A. (North Hollywood, CA); Saunders, Timothy W. (North Hollywood, CA)

2011-08-30T23:59:59.000Z

65

Effect of Si substrate on interfacial SiO{sub 2} scavenging in HfO{sub 2}/SiO{sub 2}/Si stacks  

SciTech Connect (OSTI)

The scavenging kinetics of an ultra-thin SiO{sub 2} interface layer (SiO{sub 2}-IL) in an HfO{sub 2}/SiO{sub 2}/Si stack is discussed by focusing on the substrate effect in addition to oxygen diffusion. {sup 18}O tracing experiments demonstrate that the O-atom moves from the SiO{sub 2}-IL to the HfO{sub 2} layer during scavenging. SiO{sub 2}-IL scavenging with various substrates (Si, SiC, and sapphire) has been found to be significantly different, which suggests that the Si in the substrate is also necessary to continuously cause the scavenging. Based on these findings and thermodynamic considerations, a kinetic model where oxygen vacancy (V{sub O}) transferred from the HfO{sub 2} reacts with the SiO{sub 2}, which is in contact with the Si-substrate, is proposed for the SiO{sub 2}-IL scavenging.

Li, Xiuyan, E-mail: xiuyan@adam.t.u-tokyo.ac.jp; Yajima, Takeaki; Nishimura, Tomonori; Nagashio, Kosuke; Toriumi, Akira [Department of Materials Engineering, The University of Tokyo, 7-3-1 Hongo, Tokyo 113-8656 (Japan)

2014-11-03T23:59:59.000Z

66

(INVITED PAPER) SiGe/Si-Based Optoelectronic Devices for High-Speed Communication Applications  

E-Print Network [OSTI]

(INVITED PAPER) SiGe/Si-Based Optoelectronic Devices for High-Speed Communication ApplicationsGe/Si-based optoelectronic devices are described. These include photodiodes, photoreceivers and modulators. In There is immense interest in the realization of Si-based optoelectronic devices, optoelectronic integrated circuits

Rieh, Jae-Sung

67

Rsistance au dommage local de basse nergie d'un composite SiC/SiC  

E-Print Network [OSTI]

. These results can be compared to impact resistance of ceramic matrix composites published in the literatureRĂ©sistance au dommage local de basse Ă©nergie d'un composite SiC/SiC Resistance to Low Energy Impact Damage for a SiC/SiC Composite Vincent Herb 1 , Eric Martin 1 et Jacques Lamon 1 1 : Laboratoire des

Paris-Sud XI, Université de

68

Fully-depleted Strained-Si on Insulator NMOSFETs without Relaxed SiGe Buffers  

E-Print Network [OSTI]

by wafer bonding and Smart-cut processes, is utilized for the first time to make strained-Si on insulator germanium diffusion into the strained Si, formation of low-resistance silicide and altered dopant diffusion SiGe is transferred by wafer bonding and Smart- cut to a BPSG layer, and during annealing the Si

69

Transportation Security | ornl.gov  

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

Transportation Security SHARE Global Threat Reduction Initiative Transportation Security Cooperation Secure Transport Operations (STOP) Box Security of radioactive material while...

70

Strategic Freight Transportation Contract Procurement  

E-Print Network [OSTI]

Based Procurement for Transportation Services, Journal ofCoia, A. , Evolving transportation exchanges, World trade,an Auction Based Transportation Marketplace, Transportation

Nandiraju, Srinivas

2006-01-01T23:59:59.000Z

71

"Educating transportation professionals."  

E-Print Network [OSTI]

"Educating transportation professionals." Michael Demetsky Henry L. Kinnier Professor mjd of Virginia Charlottesville, VA 434.924.7464 Transportation Engineering & Management Research Our group works closely with the Virginia Center for Transportation Innovation and Research (VCTIR), located

Acton, Scott

72

Tab. 1. Physical characteristics of Si and 4H-SiC [1]. Property Si 4H-SiC  

E-Print Network [OSTI]

and to support the grid, like Smart PV systems, a battery storage is needed. To cph@et.aau.dk, vcb@et.aau.dk, ret (107 cm/s) 1 2 Thermal conductivity (W/cm·K) 1.5 4.9 SiC-based High Efficiency Bidirectional Battery Converter for Smart PV Residential Systems Cam Pham 1 , Valeriu-Ciprian Biris 2 , Remus Teodorescu 3 , Tamas

Teodorescu, Remus

73

Single trap dynamics in electrolyte-gated Si-nanowire field effect transistors  

SciTech Connect (OSTI)

Liquid-gated silicon nanowire (NW) field effect transistors (FETs) are fabricated and their transport and dynamic properties are investigated experimentally and theoretically. Random telegraph signal (RTS) fluctuations were registered in the nanolength channel FETs and used for the experimental and theoretical analysis of transport properties. The drain current and the carrier interaction processes with a single trap are analyzed using a quantum-mechanical evaluation of carrier distribution in the channel and also a classical evaluation. Both approaches are applied to treat the experimental data and to define an appropriate solution for describing the drain current behavior influenced by single trap resulting in RTS fluctuations in the Si NW FETs. It is shown that quantization and tunneling effects explain the behavior of the electron capture time on the single trap. Based on the experimental data, parameters of the single trap were determined. The trap is located at a distance of about 2?nm from the interface Si/SiO{sub 2} and has a repulsive character. The theory of dynamic processes in liquid-gated Si NW FET put forward here is in good agreement with experimental observations of transport in the structures and highlights the importance of quantization in carrier distribution for analyzing dynamic processes in the nanostructures.

Pud, S.; Li, J.; Offenhäusser, A.; Vitusevich, S. A., E-mail: s.vitusevich@fz-juelich.de [Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich, 52425 Jülich (Germany); Gasparyan, F. [Peter Grünberg Institute (PGI-8), Forschungszentrum Jülich, 52425 Jülich (Germany); Department of Semiconductor Physics and Microelectronics, Yerevan State University, 1 Alex Manoogian St., 0025 Yerevan (Armenia); Petrychuk, M. [Radiophysics Faculty, T. Shevchenko National University of Kyiv, 60 Volodymyrska St., 01601 Kyiv (Ukraine)

2014-06-21T23:59:59.000Z

74

Transportation Efficiency Resources  

Broader source: Energy.gov [DOE]

Transportation efficiency reduces travel demand as measured by vehicle miles traveled (VMT). While transportation efficiency policies are often implemented under local governments, national and...

75

Chapter 12 Transportation  

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

2-1 November 2012 Words in bold and acronyms are defined in Chapter 32, Glossary and Acronyms. Chapter 12 Transportation This chapter describes existing transportation resources in...

76

Sustainability and Transport  

E-Print Network [OSTI]

2005. Integrating Sustainability into the Trans- portationTHOUGHT PIECE Sustainability and Transport by Richardof the concept of sustainability to transport planning. In

Gilbert, Richard

2006-01-01T23:59:59.000Z

77

Stability of SiC-Matrix Microencapsulated Fuel Constituents at Relevant LWR Conditions  

SciTech Connect (OSTI)

This paper addresses certain key feasibility issues facing the application of SiC-matrix microencapsulated fuels for light water reactor application. Issues addressed are the irradiation stability of the SiC-based nano-powder ceramic matrix under LWR-relevant irradiation conditions, the presence or extent of reaction of the SiC matrix with zirconium-based cladding, the stability of the inner and outer pyrolytic graphite layers of the microencapsulated (TRISO) particle at this uncharacteristically low irradiation temperature, and the state of the particle-matrix interface following irradiation which could possibly effect thermal transport. In the process of determining these feasibility issues microstructural evolution and change in dimension and thermal conductivity was studied. As a general finding the SiC matrix was found to be quite stable with behavior similar to that of CVD SiC. In magnitude the irradiation-induced swelling of the matrix material was slightly higher and irradiation-degraded thermal conductivity was slightly lower as compared to CVD SiC. No significant reaction of this SiC-based nano-powder ceramic matrix material with Zircaloy was observed. Irradiation of the TRISO in the 320-360 C range to a maximum dose of 7.7 1025 n/m2 (E > 0.1 MeV) did not have significant negative impact on the constituent layers of the TRISO fuel. At the highest dose studied layer structure and interface integrity remained essentially unchanged with good apparent thermal transport through the microsphere to the surrounding matrix.

Terrani, Kurt A [ORNL] [ORNL; Katoh, Yutai [ORNL] [ORNL; Leonard, Keith J [ORNL] [ORNL; Perez-Bergquist, Alex G [ORNL] [ORNL; Silva, Chinthaka M [ORNL] [ORNL; Snead, Lance Lewis [ORNL] [ORNL

2014-01-01T23:59:59.000Z

78

SiC/SiC Composite for an Advanced Fusion Power Plant Blanket A. R. Raffray1  

E-Print Network [OSTI]

SiC/SiC Composite for an Advanced Fusion Power Plant Blanket A. R. Raffray1 , L. El-Guebaly2 , D. K, and constraints relating to the SiC/SiC properties are discussed. INTRODUCTION The use of SiC/SiC composite

79

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

In the present quarter, experiments are presented on ceramic/metal interactions of Zirconia/ Ni-B-Si system and with a thin Ti coating deposited on zirconia surface. Existing facilities were modified for evaluation of environmental assisted slow crack growth and creep in flexural mode. Processing of perovskites of LSC, LSF and LSCF composition were continued for evaluation of mechanical properties as a function of environment. These studies in parallel to those on the LSFCO composition is expect to yield important information on questions such as the role of cation segregation and the stability of the perovskite structure on crack initiation vs. crack growth. Studies have been continued on the La{sub 1-x}Sr{sub x}FeO{sub 3-d} composition using neutron diffraction and TGA studies. A transition from p-type to n-type of conductor was observed at relative low pO{sub 2}, at which the majority carriers changed from the holes to electrons because of the valence state decreases in Fe due to the further loss of oxygen. Investigation on the thermodynamic properties of the membrane materials are continued to develop a complete model for the membrane transport. Data obtained at 850 C show that the stoichiometry in La{sub 0.2}Sr{sub 0.8}Fe{sub 0.8}Cr{sub 0.2}O{sub 3-x} vary from {approx}2.85 to 2.6 over the pressure range studied. From the stoichiometry a lower limit of 2.6 corresponding to the reduction of all Fe{sup 4+} to Fe{sup 3+} and no reduction of Cr{sup 3+} is expected.

S. Bandopadhyay; N. Nagabhushana

2003-08-07T23:59:59.000Z

80

Propagation of misfit dislocations from buffer/Si interface into Si  

DOE Patents [OSTI]

Misfit dislocations are redirected from the buffer/Si interface and propagated to the Si substrate due to the formation of bubbles in the substrate. The buffer layer growth process is generally a thermal process that also accomplishes annealing of the Si substrate so that bubbles of the implanted ion species are formed in the Si at an appropriate distance from the buffer/Si interface so that the bubbles will not migrate to the Si surface during annealing, but are close enough to the interface so that a strain field around the bubbles will be sensed by dislocations at the buffer/Si interface and dislocations are attracted by the strain field caused by the bubbles and move into the Si substrate instead of into the buffer epi-layer. Fabrication of improved integrated devices based on GaN and Si, such as continuous wave (CW) lasers and light emitting diodes, at reduced cost is thereby enabled.

Liliental-Weber, Zuzanna (El Sobrante, CA); Maltez, Rogerio Luis (Porto Alegre, BR); Morkoc, Hadis (Richmond, VA); Xie, Jinqiao (Raleigh, VA)

2011-08-30T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

The influence of TiSi2 and CoSi2 growth on Si native point defects: The role of the diffusing species  

E-Print Network [OSTI]

from codeposited metal and Si. The as-deposited films had the compositions Ti, TiSi0.8 , TiSi2 undersaturation.3 Nevertheless, the mechanism by which silicide films effect a perturbance in the point defect, causing a va- cancy supersaturation. The formation of CoSi2 from CoSi proceeds via diffusion of metal

Florida, University of

82

On the electrical stress-induced oxide-trapped charges in thin HfO{sub 2}/SiO{sub 2} gate dielectric stack  

SciTech Connect (OSTI)

Oxide charge buildup and its generation kinetics during constant voltage stress in TaN/HfO{sub 2}/SiO{sub 2}/p-Si structures have been experimentally investigated. From the oxide charge relaxation experiments, nature and energy location of the as-fabricated intrinsic hole traps in the gate stack have also been determined. Our measurement results indicate that the dispersive proton transport through the interfacial SiO{sub 2} contributes larger than hole trapping in positive charge buildup in the stack. From the bias temperature stress measurement results in both control oxide and HfO{sub 2}/SiO{sub 2} stacks, we have identified overcoordinated [Si{sub 2}=OH]{sup +} centers as the proton-induced defects located in the interfacial SiO{sub 2} layer of the stack. Finally, an empirical equation is proposed to explain the stress-induced oxide positive charge buildup.

Samanta, Piyas; Zhu Chunxiang; Chan, Mansun [Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon, Hong Kong (China); Department of Electrical and Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260 (Singapore); Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology, Clear Water Bay Road, Kowloon, Hong Kong (China)

2007-09-10T23:59:59.000Z

83

Graduate Certificate in Transportation  

E-Print Network [OSTI]

Graduate Certificate in Transportation Nohad A. Toulan School of Urban Studies and Planning of Engineering and Computer Science integrated transportation systems. The Graduate Certificate in Transportation their capabilities. Students in the program can choose among a wide range of relevant courses in transportation

Bertini, Robert L.

84

TRANSPORTATION Annual Report  

E-Print Network [OSTI]

2003 CENTER FOR TRANSPORTATION STUDIES Annual Report #12;Center for Transportation Studies University of Minnesota 200 Transportation and Safety Building 511 Washington Avenue S.E. Minneapolis, MN publication is a report of transportation research, education, and outreach activities for the period July

Minnesota, University of

85

Regional Transportation Coordination Study  

E-Print Network [OSTI]

Regional Planning Commission Wanda Carter-Dyer Public Transportation Coordinator Texas Department of Transportation Councilperson Debra Martinez Briseno Cities in Calhoun County Laura G. Sanders Executive Director Golden Crescent Workforce... Regional Planning Commission Wanda Carter-Dyer Public Transportation Coordinator Texas Department of Transportation Councilperson Debra Martinez Briseno Cities in Calhoun County Laura G. Sanders Executive Director Golden Crescent Workforce...

Golden Crescent Regional Planning Commission

86

SiC Power Module  

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 ConchasPassiveSubmitted forHighlightsSeminars SeminarsO'LearyGlobalMarketSi Wu d3p754

87

Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freig pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedestr  

E-Print Network [OSTI]

Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freig pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedestrian > Ports and waterways >>> Transportation ope

88

Magnetron-sputter epitaxy of {beta}-FeSi{sub 2}(220)/Si(111) and {beta}-FeSi{sub 2}(431)/Si(001) thin films at elevated temperatures  

SciTech Connect (OSTI)

{beta}-FeSi{sub 2} thin films have been grown on Si(111) and Si(001) substrates by magnetron-sputter epitaxy at 700 Degree-Sign C. On Si(111), the growth is consistent with the commonly observed orientation of [001]{beta}-FeSi{sub 2}(220)//[1-10]Si(111) having three variants, in-plane rotated 120 Degree-Sign with respect to one another. However, on Si(001), under the same growth conditions, the growth is dominated by [-111]{beta}-FeSi{sub 2}(431)//[110]Si(001) with four variants, which is hitherto unknown for growing {beta}-FeSi{sub 2}. Photoelectron spectra reveal negligible differences in the valance-band and Fe2p core-level between {beta}-FeSi{sub 2} grown on Si(111) and Si(001) but an apparent increased Si-oxidization on the surface of {beta}-FeSi{sub 2}/Si(001). This phenomenon is discussed and attributed to the Si-surface termination effect, which also suggests that the Si/Fe ratio on the surface of {beta}-FeSi{sub 2}(431)/Si(001) is larger than that on the surface of {beta}-FeSi{sub 2}(220)/Si(111).

Liu Hongfei; Tan Chengcheh; Chi Dongzhi [Institute of Materials Research and Engineering (IMRE), A-STAR (Agency for Science, Technology and Research), 3 Research Link, Singapore 117602 (Singapore)

2012-07-15T23:59:59.000Z

89

Graduate Studies Transportation Systems Engineering  

E-Print Network [OSTI]

Graduate Studies Transportation Systems Engineering TRANSPORTATION SYSTEMS The transportation that transportation systems engineering can promote a thriving economy and a better quality of life by ensuring that transportation systems themselves affect the environment through operations, construction, and maintenance

Jacobs, Laurence J.

90

Introduction Transport in disordered graphene  

E-Print Network [OSTI]

Introduction Transport in disordered graphene Summary Ballistic transport in disordered graphene P, Gornyi, Mirlin Ballistic transport in disordered graphene #12;Introduction Transport in disordered graphene Summary Outline 1 Introduction Model Experimental motivation Transport in clean graphene 2

Fominov, Yakov

91

Minnesota's Transportation Economic Development (TED)  

E-Print Network [OSTI]

Minnesota's Transportation Economic Development (TED) Pilot Program Center for Transportation Studies Transportation Research Conference May 24-25, 2011 #12;Transportation Role in Economic Development · Carefully targeted transportation infrastructure improvements will: ­ Stimulate new economic development

Minnesota, University of

92

SiD Letter of Intent  

SciTech Connect (OSTI)

This document presents the current status of the Silicon Detector (SiD) effort to develop an optimized design for an experiment at the International Linear Collider. It presents detailed discussions of each of SiD's various subsystems, an overview of the full GEANT4 description of SiD, the status of newly developed tracking and calorimeter reconstruction algorithms, studies of subsystem performance based on these tools, results of physics benchmarking analyses, an estimate of the cost of the detector, and an assessment of the detector R and D needed to provide the technical basis for an optimised SiD.

Aihara, H., (Ed.); Burrows, P., (Ed.); Oreglia, M., (Ed.); Berger, E.L.; Guarino, V.; Repond, J.; Weerts, H.; Xia, L.; Zhang, J.; /Argonne, HEP; Zhang, Q.; /Argonne, HEP /Beijing, Inst. High Energy Phys.; Srivastava, A.; /Birla Inst. Tech. Sci.; Butler, J.M.; /Boston U.; Goldstein, Joel; Velthuis, J.; /Bristol U.; Radeka, V.; /Brookhaven; Zhu, R.-Y.; /Caltech.; Lutz, P.; /DAPNIA, Saclay; de Roeck, A.; Elsener, K.; Gaddi, A.; Gerwig, H.; /CERN /Cornell U., LNS /Ewha Women's U., Seoul /Fermilab /Gent U. /Darmstadt, GSI /Imperial Coll., London /Barcelona, Inst. Microelectron. /KLTE-ATOMKI /Valencia U., IFIC /Cantabria Inst. of Phys. /Louis Pasteur U., Strasbourg I /Durham U., IPPP /Kansas State U. /Kyungpook Natl. U. /Annecy, LAPP /LLNL, Livermore /Louisiana Tech. U. /Paris U., VI-VII /Paris U., VI-VII /Munich, Max Planck Inst. /MIT, LNS /Chicago, CBC /Moscow State U. /Nanjing U. /Northern Illinois U. /Obninsk State Nucl. Eng. U. /Paris U., VI-VII /Strasbourg, IPHC /Prague, Inst. Phys. /Princeton U. /Purdue U. /Rutherford /SLAC /SUNY, Stony Brook /Barcelona U. /Bonn U. /UC, Davis /UC, Santa Cruz /Chicago U. /Colorado U. /Delhi U. /Hawaii U. /Helsinki U. /Indiana U. /Iowa U. /Massachusetts U., Amherst /Melbourne U. /Michigan U. /Minnesota U. /Mississippi U. /Montenegro U. /New Mexico U. /Notre Dame U. /Oregon U. /Oxford U. /Ramon Llull U., Barcelona /Rochester U. /Santiago de Compostela U., IGFAE /Hefei, CUST /Texas U., Arlington /Texas U., Dallas /Tokyo U. /Washington U., Seattle /Wisconsin U., Madison /Wayne State U. /Yale U. /Yonsei U.

2012-04-11T23:59:59.000Z

93

Stopping power measurements of He ions in Si and SiC by time...  

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

power measurements of He ions in Si and SiC by time-of-flight spectrometry. Abstract: Electronic energy loss is the fundamental mechanism accountable for the response of...

94

Identification of dominant scattering mechanism in epitaxial graphene on SiC  

SciTech Connect (OSTI)

A scheme of identification of scattering mechanisms in epitaxial graphene (EG) on SiC substrate is developed and applied to three EG samples grown on SiC (0001), (112{sup Ż}0), and (101{sup Ż}0) substrates. Hall measurements combined with defect detection technique enable us to evaluate the individual contributions to the carrier scatterings by defects and by substrates. It is found that the dominant scatterings can be due to either substrate or defects, dependent on the substrate orientations. The EG on SiC (112{sup Ż}0) exhibits a better control over the two major scattering mechanisms and achieves the highest mobility even with a high carrier concentration, promising for high performance graphene-based electronic devices. The method developed here will shed light on major aspects in governing carrier transport in EG to harness it effectively.

Lin, Jingjing; Guo, Liwei, E-mail: lwguo@iphy.ac.cn, E-mail: chenx29@aphy.iphy.ac.cn; Jia, Yuping; Huang, Jiao; Guo, Yu; Li, Zhilin; Chen, Xiaolong, E-mail: lwguo@iphy.ac.cn, E-mail: chenx29@aphy.iphy.ac.cn [Research and Development Center for Functional Crystals, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190 (China); Yang, Rong; Wu, Shuang; Zhang, Guangyu [Nanoscale Physics and Devices Laboratory, Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100190 (China)

2014-05-05T23:59:59.000Z

95

Effect of irradiation on thermal expansion of SiC{sub f}/SiC composites  

SciTech Connect (OSTI)

Linear thermal expansion was measured on five different SiC-fiber-reinforced/SiC-matrix (SiC{sub f}/SiC) composite types in the unirradiated and irradiated conditions. Two matrices were studied in combination with Nicalon CG reinforcement and a 150 nm PyC fiber/matrix interface: chemical vapor infiltrated (CVI) SiC and liquid-phase polymer impregnated precursor (PIP) SiC. Composites of PIP SiC with Tyranno and HPZ fiber reinforcement and a 150 nm PyC interface were also tested, as were PIP SiC composites with Nicalon CG reinforcement and a 150 nm BN fiber/matrix interface. The irradiation was conducted in the Experimental Breeder Reactor-II at a nominal temperature of 1,000 C to doses of either 33 or 43 dpa-SiC. Irradiation caused complete fiber/matrix debonding in the CVI SiC composites due to a dimensional stability mismatch between fiber and matrix, while the PIP SiC composites partially retained their fiber/matrix interface after irradiation. However, the thermal expansion of all the materials tested was found to be primarily dependent on the matrix and independent of either the fiber or the fiber/matrix interface. Further, irradiation had no significant effect on thermal expansion for either the CVI SiC or PIP SiC composites. In general, the thermal expansion of the CVI SiC composites exceeded that of the PIP SiC composites, particularly at elevated temperatures, but the expansion of both matrix types was less than chemical vapor deposited (CVD) {beta}-SiC at all temperatures.

Senor, D.J. [Pacific Northwest Lab., Richland, WA (United States); Trimble, D.J. [Westinghouse Hanford Co., Richland, WA (United States); Woods, J.J. [Lockheed Martin, Schenectady, NY (United States)

1996-06-01T23:59:59.000Z

96

Transportation Baseline Schedule  

SciTech Connect (OSTI)

The “1999 National Transportation Program - Transportation Baseline Report” presents data that form a baseline to enable analysis and planning for future Department of Energy (DOE) Environmental Management (EM) waste/material transportation. The companion “1999 Transportation ‘Barriers’ Analysis” analyzes the data and identifies existing and potential problems that may prevent or delay transportation activities based on the data presented. The “1999 Transportation Baseline Schedule” (this report) uses the same data to provide an overview of the transportation activities of DOE EM waste/materials. This report can be used to identify areas where stakeholder interface is needed, and to communicate to stakeholders the quantity/schedule of shipments going through their area. Potential bottlenecks in the transportation system can be identified; the number of packages needed, and the capacity needed at receiving facilities can be planned. This report offers a visualization of baseline DOE EM transportation activities for the 11 major sites and the “Geologic Repository Disposal” site (GRD).

Fawcett, Ricky Lee; John, Mark Earl

2000-01-01T23:59:59.000Z

97

University of California and HRL Laboratories, LLC. All rights reserved. SiGe/Si SUPERLATTICE COOLERS  

E-Print Network [OSTI]

for SiGe/Si superlattice coolers. SiGe is a good thermoelectric material for high temperature and thermally in parallel, similar to conventional thermoelectric devices, and thus achieve large cooling of the barriers to further increase clock speeds and decrease feature sizes. Thermoelectric (TE) refrigeration

98

Selective-area room temperature visible photoluminescence from SiC/Si heterostructures  

E-Print Network [OSTI]

shown8 to produce monocrystalline thin films, while minimizing the high temperature exposure. The Sic mismatch, heteroepitaxial growth of Sic films on Si has been achieved by several groups?-' In addition, SicSi. For example, polycrystalline Sic deposited on Si after it is rendered porous has been utilized9

Steckl, Andrew J.

99

Water Transport Within the STack: Water Transport Exploratory...  

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

Within the STack: Water Transport Exploratory Studies Water Transport Within the STack: Water Transport Exploratory Studies Part of a 100 million fuel cell award announced by DOE...

100

SiGeC Near Infrared Photodetectors  

E-Print Network [OSTI]

A near infrared waveguide photodetector in Si-based ternary Si?â??xâ??yGexCy alloy was demonstrated for 0.85~1.06 µm wavelength fiber-optic interconnection system applications. Two sets of detectors with active absorption ...

Li, Baojun

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Analysis of a-Si:H/TCO contact resistance for the Si heterojunction back-contact solar cell  

E-Print Network [OSTI]

Analysis of a-Si:H/TCO contact resistance for the Si heterojunction back-contact solar cell Seung- circuit voltage (Voc) and the conversion efficiency of the Si solar cell. Recently, a-Si:H heterojunction (heterojunction with intrinsic thin layer) cell [1] even with practical-sized Czochralski-grown (CZ) wafer. The a-Si:H

Park, Byungwoo

102

Strained-Si-on-Insulator (SSOI) and SiGe-on-Insulator (SGOI): Fabrication Obstacles and Solutions  

E-Print Network [OSTI]

Strained-Si-on-Insulator (SSOI) and SiGe-on-Insulator (SGOI): Fabrication Obstacles and Solutions-Si and SiGe-on-insulator were fabricated, combining both the benefits of high-mobility strained-Si and SOI) to oxidized handle wafers. Layer transfer onto insulating handle wafers can be accomplished using grind

103

Transportation Infrastructure and Sustainable Development  

E-Print Network [OSTI]

A Better Forecasting Tool for Transportation Decision-making,” Mineta Transportation Institute, San Jose Stateat the 2008 meeting of the Transportation Research Board and

Boarnet, Marlon G.

2008-01-01T23:59:59.000Z

104

Transportation Analysis | Clean Energy | ORNL  

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

Transportation Analysis SHARE Transportation Analysis Transportation Analysis efforts at Oak Ridge National Laboratory contribute to the efficient, safe, and free movement of...

105

The universal radiative transport equation  

E-Print Network [OSTI]

THE UNIVERSAL RADIATIVE TRANSPORT EQUATION Rudolph W.The Universal Radiative Transport Equation Rudolph W.The various radiative transport equations used in general

Preisendorfer, Rudolph W

1959-01-01T23:59:59.000Z

106

Transportation Management Workshop: Proceedings  

SciTech Connect (OSTI)

This report is a compilation of discussions presented at the Transportation Management Workshop held in Gaithersburg, Maryland. Topics include waste packaging, personnel training, robotics, transportation routing, certification, containers, and waste classification.

Not Available

1993-10-01T23:59:59.000Z

107

Transportation Management Research Collection /  

E-Print Network [OSTI]

, Peterbilt Motors, and General Electric. He was a national panel member of the American Arbitration, Noise and Environmental Pollution, Transportation Co-ordination and Consolidation, Transportation -- Docket 8613 1957 Civil Aeronautics Board ­ General passenger fare investigation -- Docket 8008 et al

Handy, Todd C.

108

Packaging and Transportation Safety  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Establishes safety requirements for the proper packaging and transportation of offsite shipments and onsite transfers of hazardous materials andor modal transport. Cancels DOE 1540.2 and DOE 5480.3

1995-09-27T23:59:59.000Z

109

Packaging and Transportation Safety  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Establishes safety requirements for the proper packaging and transportation of Department of Energy (DOE) offsite shipments and onsite transfers of hazardous materials and for modal transport. Canceled by DOE 460.1A

1995-09-27T23:59:59.000Z

110

Packaging and Transportation Safety  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Establishes safety requirements for the proper packaging and transportation of Department of Energy (DOE) offsite shipments and onsite transfers of hazardous materials and for modal transport. Cancels DOE O 460.1.

1996-10-02T23:59:59.000Z

111

Transportation Investment and  

E-Print Network [OSTI]

Transportation Investment and Economic Development: Has the TIED turned? David Levinson University Transportation Investments was Historically Concomitant with Land and Economic Development #12;Canals Railways Surfaced Roads Crude Oil Pipelines Gas Pipelines Telegraph 1825 1985 Proportion of Maximum Extent Growth

Levinson, David M.

112

Lubbock Metropolitan Transportation Plan  

E-Print Network [OSTI]

for Users (SAFETEA-LU) and its predecessors, the Transportation Equity Act for the 21st Century (TEA-21) and the Intermodal Surface Transportation Efficiency Act (ISTEA) of 1991, specified the transportation systems on which certain federal funds can... in Chapter 5 ? Streets and Highways; Chapter 6 ? Public Transportation; Chapter 7 ? Bicycle and Pedestrian Plan; Chapter 8 ? Lubbock International Airport and Chapter 9 ? Railroads and Trucking. Federally funded transit projects were developed...

Lubbock Metropolitan Planning Organization

2007-09-18T23:59:59.000Z

113

Transportation and its Infrastructure  

E-Print Network [OSTI]

subsidies on fossil transport fuels, subsidies on commutingC. , 2003: Subsidies that encourage fossil fuel use in

2007-01-01T23:59:59.000Z

114

Monolithic Ge-on-Si lasers for integrated photonics  

E-Print Network [OSTI]

We report room temperature Ge-on-Si lasers with direct gap emission at 1590-1610 nm. Modeling of Ge/Si double heterojunction structures, which is supported by experimental results of Ge/Si LEDs, indicates the feasibility ...

Liu, Jifeng

115

Northwestern University Transportation Center  

E-Print Network [OSTI]

Northwestern University Transportation Center 2011 Business Advisory Committee NUTC #12;#12;I have the pleasure of presenting our Business Advisory Committee members--a distinguished group of transportation industry lead- ers who have partnered with the Transportation Center in advancing the state of knowledge

Bustamante, Fabián E.

116

PalladianDigest Transportation  

E-Print Network [OSTI]

PalladianDigest CONNECT. EMPOWER. GROW. Tackling Transportation Challenges Nebraska has been a vital link in the nation's transportation system since the days when carts, wagons to University of Nebraska­Lincoln research. That's fine with UNL transportation researchers, said Larry Rilett

Farritor, Shane

117

TRANSPORTATION: THE POTENTIAL  

E-Print Network [OSTI]

INTERMODAL TRANSPORTATION: THE POTENTIAL AND THE CHALLENGE A Summary Report 2003 #12;June 2003 To the Reader This report summarizes the second James L. Oberstar Forum on Transportation Policy and Technology. Over two days, we explored the chal- lenges and opportunities in intermodal transportation, addressing

Minnesota, University of

118

Louisiana Transportation Research Center  

E-Print Network [OSTI]

Louisiana Transportation Research Center LTRC www.ltrc.lsu.edu 2012-13 ANNUALREPORT #12;The Louisiana Transportation Research Center (LTRC) is a research, technology transfer, and training center administered jointly by the Louisiana Department of Transportation and Development (DOTD) and Louisiana State

Harms, Kyle E.

119

Introduction to Transportation Planning  

E-Print Network [OSTI]

Introduction to Transportation Planning CMP 4710/6710 Fall 2012 3 Credit Hours Room: ARCH 229 on a Saturday night, transportation is not an objective in and of itself, but a means to carry out the functions of daily living (i.e., it's a "derived good"). As a consequence, the transportation systems we build

Tipple, Brett

120

Rural Intelligent Transportation Systems  

E-Print Network [OSTI]

Rural Intelligent Transportation Systems In a technical session at the 2011 NACE conference, Dennis Foderberg of SEH Inc. discussed intelligent transportation systems (ITS) developed by SEH in collaboration with Network Transportation Technologies, Inc. These systems address the problem of crashes on low-volume roads

Minnesota, University of

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

A radially resolved kinetic model for nonlocal electron ripple diffusion losses in tokamaks  

SciTech Connect (OSTI)

A relatively simple radially resolved kinetic model is applied to the ripple diffusion problem for electrons in tokamaks. The distribution function f(r,v) is defined on a two-dimensional grid, where r is the radial coordinate and v is the velocity coordinate. Particle transport in the radial direction is from ripple and banana diffusion and transport in the velocity direction is described by the Fokker-Planck equation. Particles and energy are replaced by source functions that are adjusted to maintain a constant central density and temperature. The relaxed profiles of f(r,v) show that the electron distribution function at the wall contains suprathermal electrons that have diffused from the interior that enhance ripple transport. The transport at the periphery is therefore nonlocal. The energy replacement times from the computational model are near to the experimental replacement times for tokamak discharges in the compilation by Pfeiffer and Waltz [Nucl. Fusion 19, 51 (1979)].

Robertson, Scott [Department of Physics and Center for Integrated Plasma Studies, University of Colorado, Boulder, Colorado 80309-0390 (United States)

2006-09-15T23:59:59.000Z

122

Transportation YOU 2013 DC Youth Summit WTS Transportation YOU  

E-Print Network [OSTI]

Transportation YOU 2013 DC Youth Summit WTS Transportation YOU CTS Research Conference May 21, 2014 Lisa Rasmussen, WTS / Kimley-Horn and Associates, Inc #12;Transportation YOU 2013 DC Youth SummitTransportation YOU 2013 DC Youth Summit Agenda What is Transportation YOU? Transportation YOU ­ WTS Local Chapter

Minnesota, University of

123

Manufacturing Metrology for c-Si Module Reliability/Durabiltiy...  

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

Manufacturing Metrology for c-Si Module ReliabilityDurabiltiy Manufacturing Metrology for c-Si Module ReliabilityDurabiltiy Presented at the PV Module Reliability Workshop,...

124

Synthesis and Characterization of Structured Si-Carbon Nanocomposite...  

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

Structured Si-Carbon Nanocomposite Anodes and Functional Polymer Binders Synthesis and Characterization of Structured Si-Carbon Nanocomposite Anodes and Functional Polymer Binders...

125

Theory of contributon transport  

SciTech Connect (OSTI)

A general discussion of the physics of contributon transport is presented. To facilitate this discussion, a Boltzmann-like transport equation for contributons is obtained, and special contributon cross sections are defined. However, the main goal of this study is to identify contributon transport equations and investigate possible deterministic solution techniques. Four approaches to the deterministic solution of the contributon transport problem are investigated. These approaches are an attempt to exploit certain attractive properties of the contributon flux, psi = phi phi/sup +/, where phi and phi/sup +/ are the solutions to the forward and adjoint Boltzmann transport equations.

Painter, J.W.; Gerstl, S.A.W.; Pomraning, G.C.

1980-10-01T23:59:59.000Z

126

Center for Intermodal Transportation Safety  

E-Print Network [OSTI]

Center for Intermodal Transportation Safety and Security Panagiotis Scarlatos, Ph.D., Director Transportation Safety and Security #12;Center for Intermodal Transportation Safety and Security Partners #12 evacuations · Tracking systems for hazardous materials Center for Intermodal Transportation Safety

Fernandez, Eduardo

127

Public Works Transportation Infrastructure Study  

E-Print Network [OSTI]

Public Works Transportation Infrastructure Study Minneapolis City of Lakes Minneapolis Public Works Transportation Infrastructure Study #12;Public Works Transportation Infrastructure Study Minneapolis City Works Transportation Infrastructure Study Minneapolis City of Lakes Background: · Currently, funding

Minnesota, University of

128

Mo-Si-B Alloy Development  

SciTech Connect (OSTI)

Mo-Si-B silicides consisting of the phases {alpha}-Mo (Mo solid solution), Mo{sub 3}Si, and Mo{sub 5}SiB{sub 2} have melting points on the order of 2000 C and have potential as ultra-high temperature structural materials. Mo-Si-B alloys can be processed such that the {alpha}-Mo is present in the form of isolated particles in a silicide matrix, or as a continuous matrix ''cementing'' individual silicide particles together. The latter microstructure is similar to that of WC-Co hard metals. This paper focuses on the relationship between the topology as well as scale of the microstructure of Mo-Mo{sub 3}Si-Mo{sub 5}SiB{sub 2} alloys, and their creep strength and fracture toughness. For example, the creep strength of Mo-Si-B alloys is improved by reducing the {alpha}-Mo volume fraction and by making the {alpha}-Mo phase discontinuous. The fracture toughness is improved by increasing the {alpha}-Mo volume fraction and by making the {alpha}-Mo phase continuous. Room temperature stress intensity factors as high as 21 MPa m{sup 1/2} were obtained. The room temperature fracture toughness of Mo-Si-B alloys can also be improved by microalloying with Zr. The room temperature ductility of Mo itself can be improved by adding MgAl{sub 2}O{sub 4} spinel particles suggesting yet another way to improve the ductile phase toughening of Mo-Si-B alloys.

Schneibel, J.H.; Kruzie, J.J.; Ritchie, R.O.

2003-04-24T23:59:59.000Z

129

Transportation System Requirements Document  

SciTech Connect (OSTI)

This Transportation System Requirements Document (Trans-SRD) describes the functions to be performed by and the technical requirements for the Transportation System to transport spent nuclear fuel (SNF) and high-level radioactive waste (HLW) from Purchaser and Producer sites to a Civilian Radioactive Waste Management System (CRWMS) site, and between CRWMS sites. The purpose of this document is to define the system-level requirements for Transportation consistent with the CRWMS Requirement Document (CRD). These requirements include design and operations requirements to the extent they impact on the development of the physical segments of Transportation. The document also presents an overall description of Transportation, its functions, its segments, and the requirements allocated to the segments and the system-level interfaces with Transportation. The interface identification and description are published in the CRWMS Interface Specification.

Not Available

1993-09-01T23:59:59.000Z

130

Transportation risk assessment for ethanol transport  

E-Print Network [OSTI]

(California, Texas Gulf Coast, New England Atlantic Coast) will be of particular interest. The goal is to conduct a quantitative risk assessment on the pipeline, truck, and rail transportation modes to these areas. As a result of the quantitative risk...

Shelton Davis, Anecia Delaine

2009-05-15T23:59:59.000Z

131

Alternative Transportation Technologies: Hydrogen, Biofuels,...  

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

Transportation Technologies: Hydrogen, Biofuels, Advanced Efficiency, and Plug-in Hybrid Electric Vehicles Alternative Transportation Technologies: Hydrogen, Biofuels, Advanced...

132

Electron Transport Materials: Synthesis, Properties and Device Performance  

SciTech Connect (OSTI)

We report the design, synthesis and characterization, thermal and photophysical properties of two silane based electron transport materials, dibenzo[b,d]thiophen-2-yltriphenylsilane (Si{phi}87) and (dibenzo[b,d]thiophen-2-yl)diphenylsilane (Si{phi}88) and their performance in blue organic light emitting devices (OLEDs). The utility of these materials in blue OLEDs with iridium (III) bis[(4,6-difluorophenyl)-pyridinato-N,C']picolinate (Firpic) as the phosphorescent emitter was demonstrated. Using the silane Si{phi}87 as the electron transport material (ETm) an EQE of 18.2% was obtained, with a power efficiency of 24.3 lm/W (5.8V at 1mA/cm{sup 2}), in a heterostructure. When Si{phi}88 is used, the EQE is 18.5% with a power efficiency of 26.0 lm/W (5.5V at 1mA/cm{sup 2}).

Cosimbescu, Lelia; Wang, Liang; Helm, Monte L.; Polikarpov, Evgueni; Swensen, James S.; Padmaperuma, Asanga B.

2012-06-01T23:59:59.000Z

133

Continuous-wave laser annealing of Si-rich oxide: A microscopic picture of macroscopic Si-SiO{sub 2} phase separation  

SciTech Connect (OSTI)

We report on the first observation of the macroscopic (long-range) Si-SiO{sub 2} phase separation in Si-rich oxide SiO{sub x}(x<2) obtained by continuous-wave laser annealing of free-standing SiO{sub x} films. The effect is analyzed by a unique combination of microscopic methods (Raman, transmission, photoluminescence, and infrared spectroscopy, transmission electron microscopy, electron energy loss spectroscopy, and x-ray photoelectron spectroscopy). Three regions can be distinguished on a SiO{sub x} free-standing film after 488 nm laser annealing at intensities above {approx}10{sup 4} W cm{sup -2}: central spot, ring around the central spot, and pristine film outside the irradiated area. In the pristine SiO{sub x} material, small Si nanocrystals (Si-nc) (diameters of a few nanometer) are surrounded by SiO{sub 2} with an addition of residual suboxides, the Si-nc being produced by annealing at 1100 deg. C in a furnace. The central spot of the laser-annealed area (up to {approx}30 {mu}m wide in these experiments) is practically free of Si excess and mainly consists of amorphous SiO{sub 2}. The ring around the central spot contains large spherical Si-nc (diameters up to {approx}100 nm) embedded in amorphous SiO{sub 2} without the presence of suboxides. Laser-induced temperatures in the structurally modified regions presumably exceed the Si melting temperature. The macroscopic Si-SiO{sub 2} phase separation is connected with extensive diffusion in temperature gradient leading to the Si concentration gradient. The present work demonstrates the advantages of high spatial resolution for analysis in materials research.

Khriachtchev, Leonid; Nikitin, Timur; Raesaenen, Markku; Domanskaya, Alexandra [Laboratory of Physical Chemistry, University of Helsinki, P.O. Box 55, FIN-00014 (Finland); Boninelli, Simona; Iacona, Fabio [MATIS IMM CNR, Via Santa Sofia 64, I-95123 Catania (Italy); Engdahl, Anders [MAX-lab, Lund University, P.O. Box 118, 22100 Lund (Sweden); Juhanoja, Jyrki [Top Analytica, Ruukinkatu 4, FIN-20540 Turku (Finland); Novikov, Sergei [Electron Physics Laboratory, Aalto University, P.O. Box 3000, FIN-02015 HUT (Finland)

2010-12-15T23:59:59.000Z

134

SiN-SiC nanofilm: A nano-functional ceramic with bipolar magnetic semiconducting character  

SciTech Connect (OSTI)

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.

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

135

Flex Fuel Optimized SI and HCCI Engine  

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

mode engine for a blend of gasoline and E85 for the best fuel economy - Development of a cost effective and reliable dual combustion mode engine - Development of a model-based SI...

136

Solute embrittlement of SiC  

SciTech Connect (OSTI)

The energies and stresses associated with the decohesion of ?-SiC in the presence of mobile Pd and Ag impurities are studied from first principles. Density functional theory calculations are parameterized with a generalized cohesive zone model and are analyzed within a thermodynamic framework that accounts for realistic boundary conditions in the presence of mobile impurities. We find that Pd impurities will embrittle SiC when Pd is in equilibrium with metallic Pd precipitates. Our thermodynamic analysis predicts that Pd embrittles SiC by substantially reducing the maximum stress of decohesion as a result of a phase transition between decohering planes involving an influx of Pd atoms. The methods presented in this work can be applied to study the thermodynamics of decohesion of SiC in other aggressive environments containing oxygen and water, for example, and yield environment dependent cohesive zone models for use in continuum approaches to study crack propagation and fracture.

Enrique, Raúl A., E-mail: enriquer@umich.edu [Department of Materials Science and Engineering, University of Michigan, Ann Arbor, Michigan 48103 (United States); Van der Ven, Anton, E-mail: avdv@engineering.ucsb.edu [Materials Department, University of California, Santa Barbara, California 93106-5050 (United States)

2014-09-21T23:59:59.000Z

137

MA 16020 SI slide.pptx  

E-Print Network [OSTI]

SI Study Sessions for MA 16020 -? Spring 2015. Mondays. 4:30 – 5:20 KRCH 464. Tuesdays. 5:30 – 6:20 RHPH 162. Thursdays. 4:30 – 5:20 ARMS 1103.

OwenDavis

2015-01-12T23:59:59.000Z

138

Microstructure, strength and toughness of Si3N4-SiC whisker composites  

SciTech Connect (OSTI)

Si3N4-SiC whisker composites were fabricated using several routes (i.e., pressure filtration or CIP) followed by HP or HIP. The fracture strength ranges from 650 MPa to 750 MPa on account of the whiskers orientation. Compared to the Si3N4 matrix, the toughness is increased. A strong R-curve effect can be obtained, suggesting that, to be efficient, the whisker diameter must exceed a critical size. 13 refs.

Champion, E.; Goursat, P.; Besson, J.L.; Madigou, V.; Monthioux, M.; Lespade, P.

1992-10-01T23:59:59.000Z

139

Size dependent optical properties of Si quantum dots in Si-rich nitride/Si{sub 3}N{sub 4} superlattice synthesized by magnetron sputtering  

SciTech Connect (OSTI)

A spectroscopic ellipsometry compatible approach is reported for the optical study of Si quantum dots (QDs) in Si-rich nitride/silicon nitride (SRN/Si{sub 3}N{sub 4}) superlattice, which based on Tauc-Lorentz model and Bruggeman effective medium approximation. It is shown that the optical constants and dielectric functions of Si QDs are strongly size dependent. The suppressed imaginary dielectric function of Si QDs exhibits a single broad peak analogous to amorphous Si, which centered between the transition energies E{sub 1} and E{sub 2} of bulk crystalline Si and blue shifted toward E{sub 2} as the QD size reduced. A bandgap expansion observed by the TL model when the size of Si QD reduced is in good agreement with the PL measurement. The bandgap expansion with the reduction of Si QD size is well supported by the first-principles calculations based on quantum confinement.

So, Yong-Heng; Huang, Shujuan; Conibeer, Gavin; Green, Martin A. [ARC Photovoltaics Centre of Excellence, University of New South Wales, Sydney, New South Wales 2052 (Australia); Gentle, Angus [Physics and Advanced Materials, University of Technology Sydney, P. O. Box 123, Broadway, New South Wales 2007 (Australia)

2011-03-15T23:59:59.000Z

140

Characterization of SiGe/Si multi-quantum wells for infrared sensing  

SciTech Connect (OSTI)

SiGe epitaxial layers are integrated as an active part in thermal detectors. To improve their performance, deeper understanding of design parameters, such as thickness, well periodicity, quality, and strain amount, of the layers/interfaces is required. Oxygen (2–2500?×?10{sup ?9}?Torr) was exposed prior or during epitaxy of SiGe/Si multilayers. In this range, samples with 10?nTorr oxygen were processed to investigate layer quality and noise measurements. Temperature coefficient of resistance was also measured to evaluate the thermal response. These results demonstrate sensitivity of SiGe-based devices to size and location of defects in the structure.

Moeen, M.; Salemi, A.; Östling, M.; Radamson, H. H., E-mail: rad@kth.se [School of Information and Communication Technology, KTH Royal Institute of Technology, Stockholm, 16640 Kista (Sweden); Kolahdouz, M. [School of Electrical and Computer Engineering, University of Tehran, Tehran (Iran, Islamic Republic of)] [School of Electrical and Computer Engineering, University of Tehran, Tehran (Iran, Islamic Republic of)

2013-12-16T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

ZnO/porous-Si and TiO{sub 2}/porous-Si nanocomposite nanopillars  

SciTech Connect (OSTI)

Porous Si nanopillar arrays are used as templates for atomic layer deposition of ZnO and TiO{sub 2}, and thus, ZnO/porous-Si and TiO{sub 2}/porous-Si nanocomposite nanopillars are fabricated. The diffusion of the precursor molecules into the inside of the porous structure occurs via Knudsen diffusion and is strongly limited by the small pore size. The luminescence of the ZnO/porous-Si nanocomposite nanopillars is also investigated, and the optical emission can be changed and even quenched after a strong plasma treatment. Such nanocomposite nanopillars are interesting for photocatalysis and sensors.

Wang, Dong, E-mail: dong.wang@tu-ilmenau.de; Yan, Yong; Schaaf, Peter [Chair Materials for Electronics, Institute of Materials Engineering and Institute of Micro- and Nanotechnologies MacroNano, TU Ilmenau, Gustav-Kirchhoff-Str. 5, 98693 Ilmenau (Germany); Sharp, Thomas [Oxford Instruments Plasma Technology Ltd., Yatton, Bristol BS49 4AP (United Kingdom); Schönherr, Sven; Ronning, Carsten [Institute for Solid State Physics, Friedrich Schiller University Jena, Max-Wien-Platz 1, 07743 Jena (Germany); Ji, Ran [SUSS MicroTec Lithography GmbH, Schleissheimer Str. 90, 85748 Garching (Germany)

2015-01-01T23:59:59.000Z

142

EBS Radionuclide Transport Abstraction  

SciTech Connect (OSTI)

The purpose of this report is to develop and analyze the engineered barrier system (EBS) radionuclide transport abstraction model, consistent with Level I and Level II model validation, as identified in Technical Work Plan for: Near-Field Environment and Transport: Engineered Barrier System: Radionuclide Transport Abstraction Model Report Integration (BSC 2005 [DIRS 173617]). The EBS radionuclide transport abstraction (or EBS RT Abstraction) is the conceptual model used in the total system performance assessment (TSPA) to determine the rate of radionuclide releases from the EBS to the unsaturated zone (UZ). The EBS RT Abstraction conceptual model consists of two main components: a flow model and a transport model. Both models are developed mathematically from first principles in order to show explicitly what assumptions, simplifications, and approximations are incorporated into the models used in the TSPA. The flow model defines the pathways for water flow in the EBS and specifies how the flow rate is computed in each pathway. Input to this model includes the seepage flux into a drift. The seepage flux is potentially split by the drip shield, with some (or all) of the flux being diverted by the drip shield and some passing through breaches in the drip shield that might result from corrosion or seismic damage. The flux through drip shield breaches is potentially split by the waste package, with some (or all) of the flux being diverted by the waste package and some passing through waste package breaches that might result from corrosion or seismic damage. Neither the drip shield nor the waste package survives an igneous intrusion, so the flux splitting submodel is not used in the igneous scenario class. The flow model is validated in an independent model validation technical review. The drip shield and waste package flux splitting algorithms are developed and validated using experimental data. The transport model considers advective transport and diffusive transport from a breached waste package. Advective transport occurs when radionuclides that are dissolved or sorbed onto colloids (or both) are carried from the waste package by the portion of the seepage flux that passes through waste package breaches. Diffusive transport occurs as a result of a gradient in radionuclide concentration and may take place while advective transport is also occurring, as well as when no advective transport is occurring. Diffusive transport is addressed in detail because it is the sole means of transport when there is no flow through a waste package, which may dominate during the regulatory compliance period in the nominal and seismic scenarios. The advective transport rate, when it occurs, is generally greater than the diffusive transport rate. Colloid-facilitated advective and diffusive transport is also modeled and is presented in detail in Appendix B of this report.

J. Prouty

2006-07-14T23:59:59.000Z

143

Semiconducting chalcogenide buffer layer for oxide heteroepitaxy on Si,,001...  

E-Print Network [OSTI]

controlled laminar growth of a crystalline transition metal oxide on Si 001 without SiOx or silicide/or silicides at the Si/oxide interface. Subnanometer buffer layers can prevent interface reac- tions while, also enables flexible strain relief. We observe nei- ther oxide nor silicide formation at the buried Si

Olmstead, Marjorie

144

Electrospun a-Si using Liquid Silane/Polymer Inks  

SciTech Connect (OSTI)

Amorphous silicon nanowires (a-SiNWs) were prepared by electrospinning cyclohexasilane (Si{sub 6}H{sub 12}) admixed with polymethylmethacrylate (PMMA) in toluene. Raman spectroscopy characterization of these wires (d {approx} 50-2000 nm) shows 350 C treatment yields a-SiNWs. Porous a-SiNWs are obtained using a volatile polymer.

Doug Schulz

2010-12-09T23:59:59.000Z

145

Alternative Fuel Transportation Program  

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

Merit Review: EPAct State and Alternative Fuel Provider Fleets "Alternative Fuel Transportation Program" Dana O'Hara, DOE Ted Sears, NREL Vehicle Technologies Program June 20,...

146

Sustainable Transportation (Fact Sheet)  

SciTech Connect (OSTI)

This document highlights DOE's Office of Energy Efficiency and Renewable Energy's advancements in transportation technologies, alternative fuels, and fuel cell technologies.

Not Available

2012-09-01T23:59:59.000Z

147

UZ Colloid Transport Model  

SciTech Connect (OSTI)

The UZ Colloid Transport model development plan states that the objective of this Analysis/Model Report (AMR) is to document the development of a model for simulating unsaturated colloid transport. This objective includes the following: (1) use of a process level model to evaluate the potential mechanisms for colloid transport at Yucca Mountain; (2) Provide ranges of parameters for significant colloid transport processes to Performance Assessment (PA) for the unsaturated zone (UZ); (3) Provide a basis for development of an abstracted model for use in PA calculations.

M. McGraw

2000-04-13T23:59:59.000Z

148

Energy Storage and Transportation  

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

Storage and Transportation INL Logo Search Skip Navigation Links Home Newsroom About INL Careers Research Programs Energy and Environment National and Homeland Security New Energy...

149

Transportation and its Infrastructure  

E-Print Network [OSTI]

Options for Liquid Biofuels Development in Ireland. SEI, 562006: Outlook for advanced biofuels. Energy Policy, 34(17),40 pp. IEA, 2004c: Biofuels for Transport: An International

2007-01-01T23:59:59.000Z

150

Radioactive Material Transportation Practices  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

Establishes standard transportation practices for Departmental programs to use in planning and executing offsite shipments of radioactive materials including radioactive waste. Does not cancel other directives.

2002-09-23T23:59:59.000Z

151

2006 TRANSPORTATION TOMORROW SURVEY JOINT PROGRAM IN TRANSPORTATION  

E-Print Network [OSTI]

2006 TRANSPORTATION TOMORROW SURVEY JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO 2006 Transportation Tomorrow Survey Data Presentation #12;2006 TRANSPORTATION TOMORROW SURVEY JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO City of Hamilton City of Kawartha Lakes City of Guelph City of Brantford

Toronto, University of

152

Residual Stress in CVD-grown 3C-SiC Films on Si Substrates Alex A. Volinsky1  

E-Print Network [OSTI]

on 50 mm (100) and (111) Si substrates in a hot-wall CVD reactor. The film tensile residual stress was non-uniform, having a linear profile along the growth direction. This presented a challenge of using to deposit SiC on Si wafers due to their high quality and low cost, in comparison to SiC substrates. However

Volinsky, Alex A.

153

Modeling of implantation and mixing damage during etching of SiO2 over Si in fluorocarbon plasmas  

E-Print Network [OSTI]

Modeling of implantation and mixing damage during etching of SiO2 over Si in fluorocarbon plasmas- sions (CD).3 An example of this process is fluorocarbon plasma etching of trenches and vias in SiO2 and stopping on a crystalline Si layer. The fluorocarbon radicals produced in the plasma deposit a polymer

Kushner, Mark

154

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

SciTech Connect (OSTI)

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.

Wang, Q.

2011-05-01T23:59:59.000Z

155

MAGNETOHYDRODYNAMIC AND THERMAL ISSUES OF THE SiCf0SiC FLOW CHANNEL INSERT  

E-Print Network [OSTI]

and heat transfer in the po- loidal channel of the blanket, were studied with numer- ical simulations using, and the effect of SiCf /SiC anisotropy. KEYWORDS: liquid metal blanket, magnetohydrodynamics, heat transfer I modifications, one with no pres- sure equalization openings and one with a pressure equalization slot, have been

Abdou, Mohamed

156

Biofuels and Transportation  

E-Print Network [OSTI]

Biofuels and Transportation Impacts and Uncertainties Some Observations of a Reformed Ethanol and Logistics Symposium 3 Topics · Why Biofuels · Ethanol Economics · Ethanol Transportation Equipment Biofuels? · National Security · Reduce Imports of oil · Peak Oil · Replace Fossil Resources

Minnesota, University of

157

Packaging and Transportation Safety  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

The order establishes safety requirements for the proper packaging and transportation of DOE, including NNSA, offsite shipments and onsite transfers of radioactive and other hazardous materials and for modal transportation. Cancels DOE O 460.1B, 5-14-10

2010-05-14T23:59:59.000Z

158

Packaging and Transportation Safety  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

To establish safety requirements for the proper packaging and transportation of Department of Energy (DOE)/National Nuclear Security Administration (NNSA) offsite shipments and onsite transfers of hazardous materials and for modal transport. Cancels DOE O 460.1A. Canceled by DOE O 460.1C.

2003-04-04T23:59:59.000Z

159

Northwestern University Transportation Center  

E-Print Network [OSTI]

and challenges for our society. Energy and sustainability, economic growth and development, quality of life in the world to recognize transportation as an interdisciplinary field, the Transportation Center was founded, as the tradition lives on, and the Center continues to renew itself and engage faculty and students with new

MacIver, Malcolm A.

160

MAESTRAEN TRANSPORTE ESPECIALIZACINEN  

E-Print Network [OSTI]

investigaciones que permitan la comprensión de distintos componentes delsistema del transporte así como para Investigación de Operaciones y Redes de transporte Medidas y Administración del Tránsito Tecnologías de

Vásquez, Carlos

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

Si6H12/Polymer Inks for Electrospinning a-Si Nanowire Lithium Ion Battery Anodes  

SciTech Connect (OSTI)

Amorphous silicon nanowires 'a-SiNWs' have been prepared by electrospinning a liquid silane-based precursor. Cyclohexasilane 'Si6H12' was admixed with poly-methyl methacrylate (PMMA) in toluene giving an ink that was electrospun into the Si6H12/PPMA wires with diameters of 50-2000 nm. Raman spectroscopy revealed that thermal treatment at 350 C transforms this deposit into a-SiNWs. These materials were coated with a thin carbon layer and then tested as half-cells where a reasonable plateau in electrochemical cycling was observed after an initial capacity fade. Additionally, porous a-SiNWs were realized when the thermally decomposable binder polypropylene carbonate/polycyclohexene carbonate was used as the polymer carrier.

Schulz, Douglas L.; Hoey, Justin; Smith, Jeremiah; Elangovan, Arumugasamy; Wu, Xiangfa; Akhatov, Iskander; Payne, Scott; Moore, Jayma; Boudjouk, Philip; Pederson, Larry; Xiao, Jie; Zhang, Jiguang

2010-08-04T23:59:59.000Z

162

INLAND PORT TRANSPORTATION EVALUATION GUIDE  

E-Print Network [OSTI]

INLAND PORT TRANSPORTATION EVALUATION GUIDE by Robert Harrison, Center for Transportation Research Transportation Institute, The Texas A&M University System; and Jolanda Prozzi, Center for Transportation Research, The University of Texas at Austin CENTER FOR TRANSPORTATION RESEARCH Bureau of Engineering Research

Texas at Austin, University of

163

Stepwise redefinition of the SI base units  

E-Print Network [OSTI]

The four SI base units are proposed to be redefined in two stages: first, the kilogram, mole and ampere should be defined, and then the kelvin. To realize the redefinition of a base unit of the SI in terms of fundamental physical constant (FPC), a principle of coincidence of their physical dimensions is put forward. Direct applying this principle will lead to the changing of the sets of base and derived units in the new SI. If we want to preserve the continuity of the division between base and derived units in the new and the current SI, the principle is to be generalized with the time dimension factor be included. The status of the mole as the base unit of measurement is considered in the current and new SI. It is proposed to redefine the kilogram using a fixed value of the Avogadro constant and then to redefine the kelvin, after the measurement accuracy of the Boltzmann constant has been increased and agreed with the values of other constants of molecular physics.

Issaev, L K; Khruschov, V V

2012-01-01T23:59:59.000Z

164

http://tti.tamu.edu Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freight  

E-Print Network [OSTI]

http://tti.tamu.edu Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freight pipeline transportation >>> Transportation operat > Freight traffic > Commodities > Travel time > Travel demand > http

165

STRUCTURAL REQUIREMENTS OF ORGANIC ANION TRANSPORTING POLYPEPTIDE MEDIATED TRANSPORT  

E-Print Network [OSTI]

The organic anion transporting polypeptides (human: OATP; other: Oatp) form a mammalian transporter superfamily that mediates the transport of structurally unrelated compounds across the cell membrane. Members in this ...

Weaver, Yi Miao

2010-04-12T23:59:59.000Z

166

Synthesis, fabrication and characterization of Ge/Si axial nanowire heterostructure tunnel FETs  

SciTech Connect (OSTI)

Axial Ge/Si heterostructure nanowires allow energy band-edge engineering along the axis of the nanowire, which is the charge transport direction, and the realization of asymmetric devices for novel device architectures. This work reports on two advances in the area of heterostructure nanowires and tunnel FETs: (i) the realization of 100% compositionally modulated Si/Ge axial heterostructure nanowires with lengths suitable for device fabrication and (ii) the design and implementation of Schottky barrier tunnel FETs on these nanowires for high-on currents and suppressed ambipolar behavior. Initial prototype devices resulted in a current drive in excess of 100 {micro}A/{micro}m (I/{pi}D) and 10{sup 5} I{sub on}/I{sub off} ratios. These results demonstrate the potential of such asymmetric heterostructures (both in the semiconductor channel and metal-semiconductor barrier heights) for low-power and high performance electronics.

Picraux, Samuel T [Los Alamos National Laboratory; Dayeh, Shadi A [Los Alamos National Laboratory

2010-01-01T23:59:59.000Z

167

Ag on Si(111) from basic science to application  

SciTech Connect (OSTI)

In our work we revisit Ag and Au adsorbates on Si(111)-7x7, as well as experiment with a ternary system of Pentacene, Ag and Si(111). Of particular interest to us is the Si(111)-({radical}3x{radical}3)R30{degree}–Ag (Ag-Si-{radical}3 hereafter). In this thesis I systematically e plore effects of Ag deposition on the Ag-Si-{radical}3 at different temperatures, film thicknesses and deposition fluxes. The generated insight of the Ag system on the Si(111) is then applied to generate novel methods of nanostructuring and nanowire growth. I then extend our expertise to the Au system on the Ag-Si(111) to gain insight into Au-Si eutectic silicide formation. Finally we explore behavior and growth modes of an organic molecule on the Ag-Si interface.

Belianinov, Aleksey

2012-04-04T23:59:59.000Z

168

Comparison of the vacuum-ultraviolet radiation response of HfO{sub 2}/SiO{sub 2}/Si dielectric stacks with SiO{sub 2}/Si  

SciTech Connect (OSTI)

Vacuum ultraviolet (vuv) emitted during plasma processing degrades dielectrics by generating electron-hole pairs. VUV-induced charging of SiO{sub 2}/p-Si and HfO{sub 2}/SiO{sub 2}/p-Si dielectric stacks are compared. For SiO{sub 2}/p-Si, charging is observed for photon energies >15 eV by ionization of dielectric atoms from photoinjected electrons. In HfO{sub 2}/SiO{sub 2}/p-Si, charging is observed for photon >10 eV and is due to ionization by photoinjected electrons and by H{sup +} trapping in the HfO{sub 2}/SiO{sub 2} bulk. Hydrogen appears during annealing at the Si-SiO{sub 2} interface forming Si-H, which, during irradiation, is depassivated by photoinjected electrons. The authors conclude that dielectric charging in thin oxides (<10 nm) occurs more easily in HfO{sub 2}/SiO{sub 2} than in SiO{sub 2}.

Upadhyaya, G. S.; Shohet, J. L. [Plasma Processing and Technology Laboratory, and Department of Electrical and Computer Engineering, University of Wisconsin-Madison, Madison, Wisconsin 53706 (United States)

2007-02-12T23:59:59.000Z

169

A Novel Algorithm for Solving the Multidimensional Neutron Transport Equation on Massively Parallel Architectures  

SciTech Connect (OSTI)

We employ the Integral Transport Matrix Method (ITMM) as the kernel of new parallel solution methods for the discrete ordinates approximation of the within-group neutron transport equation. The ITMM abandons the repetitive mesh sweeps of the traditional source iterations (SI) scheme in favor of constructing stored operators that account for the direct coupling factors among all the cells' fluxes and between the cells' and boundary surfaces' fluxes. The main goals of this work are to develop the algorithms that construct these operators and employ them in the solution process, determine the most suitable way to parallelize the entire procedure, and evaluate the behavior and parallel performance of the developed methods with increasing number of processes, P. The fastest observed parallel solution method, Parallel Gauss-Seidel (PGS), was used in a weak scaling comparison with the PARTISN transport code, which uses the source iteration (SI) scheme parallelized with the Koch-baker-Alcouffe (KBA) method. Compared to the state-of-the-art SI-KBA with diffusion synthetic acceleration (DSA), this new method- even without acceleration/preconditioning-is completitive for optically thick problems as P is increased to the tens of thousands range. For the most optically thick cells tested, PGS reduced execution time by an approximate factor of three for problems with more than 130 million computational cells on P = 32,768. Moreover, the SI-DSA execution times's trend rises generally more steeply with increasing P than the PGS trend. Furthermore, the PGS method outperforms SI for the periodic heterogeneous layers (PHL) configuration problems. The PGS method outperforms SI and SI-DSA on as few as P = 16 for PHL problems and reduces execution time by a factor of ten or more for all problems considered with more than 2 million computational cells on P = 4.096.

Azmy, Yousry

2014-06-10T23:59:59.000Z

170

Transportation activity analysis using smartphones  

E-Print Network [OSTI]

Transportation activity surveys investigate when, where and how people travel in urban areas to provide information necessary for urban transportation planning. In Singapore, the Land Transport Authority (LTA) carries out ...

Xiao, Yu

171

Spectrally enhancing near-field radiative heat transfer by exciting magnetic polariton in SiC gratings  

E-Print Network [OSTI]

In the present work, we theoretically demonstrate, for the first time, that near field radiative transport between 1D periodic grating microstructures separated by subwavelength vacuum gaps can be significantly enhanced by exciting magnetic resonance or polariton. Fluctuational electrodynamics that incorporates scattering matrix theory with rigorous coupled wave analysis is employed to exactly calculate the near field radiative heat flux between two SiC gratings. Besides the well known coupled surface phonon polaritons (SPhP), an additional spectral radiative heat flux peak, which is due to magnetic polariton, is found within the phonon absorption band of SiC. The mechanisms, behaviors and interplays between magnetic polariton, coupled SPhP, single interface SPhP, and Wood's anomaly in the near field radiative transport are elucidated in detail. The findings will open up a new way to control near field radiative heat transfer by magnetic resonance with micro or nanostructured metamaterials.

Yang, Yue

2015-01-01T23:59:59.000Z

172

Direct growth of graphene on Si(111)  

SciTech Connect (OSTI)

Due to the need of integrated circuit in the current silicon technology, the formation of graphene on Si wafer is highly desirable, but is still a challenge for the scientific community. In this context, we report the direct growth of graphene on Si(111) wafer under appropriate conditions using an electron beam evaporator. The structural quality of the material is investigated in detail by reflection high energy electron diffraction, Auger electron spectroscopy, X-ray photoemission spectroscopy, Raman spectroscopy, high resolution scanning electron microscopy, atomic force microscopy, and scanning tunneling microscopy. Our experimental results confirm that the quality of graphene is strongly dependent on the growth time during carbon atoms deposition.

Thanh Trung, Pham, E-mail: phamtha@fundp.ac.be; Joucken, Frédéric; Colomer, Jean-François; Robert, Sporken [Research Center in Physics of Matter and Radiation (PMR), University of Namur (FUNDP), 61 Rue de Bruxelles, 5000 Namur (Belgium); Campos-Delgado, Jessica; Raskin, Jean-Pierre [Electrical Engineering (ELEN), Institute of Information and Communication Technologies, Electronics and Applied Mathematics (ICTEAM), Université catholique de Louvain UCL, 3 place du Levant, Louvain-la-Neuve (Belgium); Hackens, Benoît; Santos, Cristiane N. [Nanoscopic physics (NAPS), Institute of Condensed Matter and Nanosciences (IMCN), Université catholique de Louvain UCL, 2 chemin du Cyclotron, Louvain-la-Neuve (Belgium)

2014-06-14T23:59:59.000Z

173

Transportation Economic Assistance Program (Wisconsin)  

Broader source: Energy.gov [DOE]

The Transportation Economic Assistance Program provides state grants to private business and local governments to improve transportation to projects improving economic conditions and creating or...

174

EBS Radionuclide Transport Abstraction  

SciTech Connect (OSTI)

The purpose of this report is to develop and analyze the engineered barrier system (EBS) radionuclide transport abstraction model, consistent with Level I and Level II model validation, as identified in ''Technical Work Plan for: Near-Field Environment and Transport: Engineered Barrier System: Radionuclide Transport Abstraction Model Report Integration'' (BSC 2005 [DIRS 173617]). The EBS radionuclide transport abstraction (or EBS RT Abstraction) is the conceptual model used in the total system performance assessment for the license application (TSPA-LA) to determine the rate of radionuclide releases from the EBS to the unsaturated zone (UZ). The EBS RT Abstraction conceptual model consists of two main components: a flow model and a transport model. Both models are developed mathematically from first principles in order to show explicitly what assumptions, simplifications, and approximations are incorporated into the models used in the TSPA-LA. The flow model defines the pathways for water flow in the EBS and specifies how the flow rate is computed in each pathway. Input to this model includes the seepage flux into a drift. The seepage flux is potentially split by the drip shield, with some (or all) of the flux being diverted by the drip shield and some passing through breaches in the drip shield that might result from corrosion or seismic damage. The flux through drip shield breaches is potentially split by the waste package, with some (or all) of the flux being diverted by the waste package and some passing through waste package breaches that might result from corrosion or seismic damage. Neither the drip shield nor the waste package survives an igneous intrusion, so the flux splitting submodel is not used in the igneous scenario class. The flow model is validated in an independent model validation technical review. The drip shield and waste package flux splitting algorithms are developed and validated using experimental data. The transport model considers advective transport and diffusive transport from a breached waste package. Advective transport occurs when radionuclides that are dissolved or sorbed onto colloids (or both) are carried from the waste package by the portion of the seepage flux that passes through waste package breaches. Diffusive transport occurs as a result of a gradient in radionuclide concentration and may take place while advective transport is also occurring, as well as when no advective transport is occurring. Diffusive transport is addressed in detail because it is the sole means of transport when there is no flow through a waste package, which may dominate during the regulatory compliance period in the nominal and seismic scenarios. The advective transport rate, when it occurs, is generally greater than the diffusive transport rate. Colloid-facilitated advective and diffusive transport is also modeled and is presented in detail in Appendix B of this report.

J.D. Schreiber

2005-08-25T23:59:59.000Z

175

Development of Readout Interconnections for the Si-W Calorimeter of SiD  

SciTech Connect (OSTI)

The SiD collaboration is developing a Si-W sampling electromagnetic calorimeter, with anticipated application for the International Linear Collider. Assembling the modules for such a detector will involve special bonding technologies for the interconnections, especially for attaching a silicon detector wafer to a flex cable readout bus. We review the interconnect technologies involved, including oxidation removal processes, pad surface preparation, solder ball selection and placement, and bond quality assurance. Our results show that solder ball bonding is a promising technique for the Si-W ECAL, and unresolved issues are being addressed.

Woods, M.; Fields, R.G.; Holbrook, B.; Lander, R.L.; Moskaleva, A.; Neher, C.; Pasner, J.; Tripathi, M.; /UC, Davis; Brau, J.E.; Frey, R.E.; Strom, D.; /Oregon U.; Breidenbach, M.; Freytag, D.; Haller, G.; Herbst, R.; Nelson, T.; /SLAC; Schier, S.; Schumm, B.; /UC, Santa Cruz

2012-09-14T23:59:59.000Z

176

Development of Readout Interconnections for the Si-W Calorimeter of SiD  

E-Print Network [OSTI]

The SiD collaboration is developing a Si-W sampling electromagnetic calorimeter, with anticipated application for the International Linear Collider. Assembling the modules for such a detector will involve special bonding technologies for the interconnections, especially for attaching a silicon detector wafer to a flex cable readout bus. We review the interconnect technologies involved, including oxidation removal processes, pad surface preparation, solder ball selection and placement, and bond quality assurance. Our results show that solder ball bonding is a promising technique for the Si-W ECAL, and unresolved issues are being addressed.

M. Woods; R. G. Fields; B. Holbrook; R. L. Lander; A. Moskaleva; C. Neher; J. Pasner; M. Tripathi; J. E. Brau; R. E. Frey; D. Strom; M. Breidenbach; D. Freytag; G. Haller; R. Herbst; T. Nelson; S. Schier; B. Schumm

2011-11-21T23:59:59.000Z

177

Transportation risk assessment for ethanol transport  

E-Print Network [OSTI]

the quantitative risks involved with an ethanol pipeline. Pipelines that run from the Midwest, where the vast majority of ethanol is produced, to the target areas where reformulated gasoline is required (California, Texas Gulf Coast, New England Atlantic Coast... Atlantic Coast because of the large volume. It is beneficial to look at these areas as opposed to the iv smaller areas because pipeline transportation requires very large volumes. In order to find a meaningful comparison between all three...

Shelton Davis, Anecia Delaine

2008-10-10T23:59:59.000Z

178

ELECTROCHEMICAL POWER FOR TRANSPORTATION  

E-Print Network [OSTI]

be generated from coal and nuclear energy in contrast to 7%in the use of coal and nuclear energy for transportation andparticularly for coal and nuclear energy utilization, would

Cairns, Elton J.

2012-01-01T23:59:59.000Z

179

Managing Director Buildings, Transportation  

E-Print Network [OSTI]

Site Development Will Terris Manager Gardening Maintenance Jim Gish Manager Landscape Specialty Tegwyn Maintenance and project Delivery Scott Sherwood Director Transportation Services Glenl Wear Director Grounds Supervisor Specialty Crews 17 Area supervisors Custodial Maintenance Charles Anderson Supervisor Activity

Seamons, Kent E.

180

Transportation Baseline Report  

SciTech Connect (OSTI)

The National Transportation Program 1999 Transportation Baseline Report presents data that form a baseline to enable analysis and planning for future Department of Energy (DOE) Environmental Management (EM) waste and materials transportation. In addition, this Report provides a summary overview of DOE’s projected quantities of waste and materials for transportation. Data presented in this report were gathered as a part of the IPABS Spring 1999 update of the EM Corporate Database and are current as of July 30, 1999. These data were input and compiled using the Analysis and Visualization System (AVS) which is used to update all stream-level components of the EM Corporate Database, as well as TSD System and programmatic risk (disposition barrier) information. Project (PBS) and site-level IPABS data are being collected through the Interim Data Management System (IDMS). The data are presented in appendices to this report.

Fawcett, Ricky Lee; Kramer, George Leroy Jr.

1999-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

Transportation Energy and Alternatives  

E-Print Network [OSTI]

Station in Indonesia Hydrogen refueling in Munich, Germany "You will never see widespread use of the fuel fuels" Potentially used for Transportation · Biogas (primarily for onsite electrical generation) LFG

Handy, Susan L.

182

Accident resistant transport container  

DOE Patents [OSTI]

The invention relates to a container for the safe air transport of plutonium having several intermediate wood layers and a load spreader intermediate an inner container and an outer shell for mitigation of shock during a hypothetical accident.

Andersen, John A. (Albuquerque, NM); Cole, James K. (Albuquerque, NM)

1980-01-01T23:59:59.000Z

183

Giant monopole resonance strength in Si-28  

E-Print Network [OSTI]

The giant resonance region in Si-28 was studied with inelastic scattering of 240 MeV alpha particles at small angles including 0 degrees. The giant resonance peak extended from E-x=12 MeV to 35 MeV and E0 strength corresponding to 54 +/- 6...

Youngblood, David H.; Clark, HL; Lui, YW.

1998-01-01T23:59:59.000Z

184

Interactive Transportable Architecture  

E-Print Network [OSTI]

Transportable architecture which embeds the means to communicate with real or imaginary digital information spaces in a natural fashion offers unprecedented opportunities to make multimedia experiences available to the public almost everywhere. This installation demonstrates an example of interactive transportable architecture which incorporates unencumebered real-time body tracking and gesture recognition to explore a 3-D cityscape and a brain-like web-based information space.

Oliver Irschitz; Priam Givord; Newyork Exit Newyork; Flavia Sparacino

185

Campus Village Transportation  

E-Print Network [OSTI]

Emmanuel Hernandez THE CAMPUS V ILLAGE : TRANSPORTATION Objective The Campus Village is a new community being constructed in northwest Lawrence with a intergenerational focus in mind. The site will be equipped with housing for students, athletes..., retirement community members, and families. The overall objective of this study was to evaluate the city’s current transportation network and make recommendations on that network to better accommodate the needs of the new property. Specifically, the goal...

Hernandez, Emmanuel

2014-11-19T23:59:59.000Z

186

Thermoelectric transport in superlattices  

SciTech Connect (OSTI)

The thermoelectric transport properties of superlattices have been studied using an exact solution of the Boltzmann equation. The role of heat transport along the barrier layers, of carrier tunneling through the barriers, of valley degeneracy and of the well width and energy dependences of the carrier-phonon scattering rates on the thermoelectric figure of merit are given. Calculations are given for Bi{sub 2}Te{sub 3} and for PbTe, and the results of recent experiments are discussed.

Reinecke, T.L.; Broido, D.A.

1997-07-01T23:59:59.000Z

187

Fluid transport container  

DOE Patents [OSTI]

An improved fluid container for the transport, collection, and dispensing of a sample fluid that maintains the fluid integrity relative to the conditions of the location at which it is taken. More specifically, the invention is a fluid sample transport container that utilizes a fitting for both penetrating and sealing a storage container under controlled conditions. Additionally, the invention allows for the periodic withdrawal of portions of the sample fluid without contamination or intermixing from the environment surrounding the sample container. 13 figs.

DeRoos, B.G.; Downing, J.P. Jr.; Neal, M.P.

1995-11-14T23:59:59.000Z

188

Metropolitan Transportation Plan 2035  

E-Print Network [OSTI]

Adopted by the Tyler Area MPO Policy Committee December 4, 2009 METROPOLITAN TRANSPORTATION PLAN 2035 Revised April 22, 2010 Adopted by the Tyler Area MPO Policy Committee December 4, 2009 Amended/Revised April 22, 2010 Prepared by: Bucher..., Willis, and Ratliff Corporation 1828 East Southeast Loop 323, Suite 202 Tyler, Texas 75701 903.581.7844 This Document Serves as an Update to the Tyler Area Metropolitan Transportation Plan 2030. Portions of that Document were Unchanged and Appear...

Tyler Area Metropolitan Planning Organization

2009-12-04T23:59:59.000Z

189

Electronic Origin For The Phase Transition From Amorphous LixSi...  

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

lithiation, silicon transforms to amorphous LixSi (a-LixSi) via electrochemical driven solid state amorphization. With increasing lithium concentration, a-LixSi transforms to...

190

Membrane Transport Chloride Transport Across Vesicle and Cell  

E-Print Network [OSTI]

Membrane Transport Chloride Transport Across Vesicle and Cell Membranes by Steroid-Based Receptors-established that molecules which transport cations across cell membranes (cationophores) can have potent biological effects the formation of an ion pair.[4a­g] Anion transport by purely electroneutral systems is still quite rare.[4j

Smith, Bradley D.

191

B. TRANSPORTATION, CIRCULATION AND PARKING B. TRANSPORTATION, CIRCULATION AND  

E-Print Network [OSTI]

B. TRANSPORTATION, CIRCULATION AND PARKING 231 B. TRANSPORTATION, CIRCULATION AND PARKING on transportation and connectivity issues common to UCSF as a whole. Please refer to Chapter 5, Plans for Existing characteristics specific to each individual UCSF site. DETERMINANTS OF THE 1996 LRDP The transportation

Mullins, Dyche

192

Step-edge-induced resistance anisotropy in quasi-free-standing bilayer chemical vapor deposition graphene on SiC  

SciTech Connect (OSTI)

The transport properties of quasi-free-standing (QFS) bilayer graphene on SiC depend on a range of scattering mechanisms. Most of them are isotropic in nature. However, the SiC substrate morphology marked by a distinctive pattern of the terraces gives rise to an anisotropy in graphene's sheet resistance, which may be considered an additional scattering mechanism. At a technological level, the growth-preceding in situ etching of the SiC surface promotes step bunching which results in macro steps ?10?nm in height. In this report, we study the qualitative and quantitative effects of SiC steps edges on the resistance of epitaxial graphene grown by chemical vapor deposition. We experimentally determine the value of step edge resistivity in hydrogen-intercalated QFS-bilayer graphene to be ?190???m for step height h{sub S}?=?10?nm and provide proof that it cannot originate from mechanical deformation of graphene but is likely to arise from lowered carrier concentration in the step area. Our results are confronted with the previously reported values of the step edge resistivity in monolayer graphene over SiC atomic steps. In our analysis, we focus on large-scale, statistical properties to foster the scalable technology of industrial graphene for electronics and sensor applications.

Ciuk, Tymoteusz [Institute of Electronic Materials Technology, Wolczynska 133, 01-919 Warsaw (Poland); Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw (Poland); Cakmakyapan, Semih; Ozbay, Ekmel [Department of Electrical and Electronics Engineering, Department of Physics, Nanotechnology Research Center, Bilkent University, 06800 Bilkent, Ankara (Turkey); Caban, Piotr; Grodecki, Kacper; Pasternak, Iwona; Strupinski, Wlodek, E-mail: wlodek.strupinski@itme.edu.pl [Institute of Electronic Materials Technology, Wolczynska 133, 01-919 Warsaw (Poland); Krajewska, Aleksandra [Institute of Electronic Materials Technology, Wolczynska 133, 01-919 Warsaw (Poland); Institute of Optoelectronics, Military University of Technology, Gen. S. Kaliskiego 2, 00-908 Warsaw (Poland); Szmidt, Jan [Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, Koszykowa 75, 00-662 Warsaw (Poland)

2014-09-28T23:59:59.000Z

193

Ge-on-Si laser operating at room temperature  

E-Print Network [OSTI]

Monolithic lasers on Si are ideal for high-volume and large-scale electronic–photonic integration. Ge is an interesting candidate owing to its pseudodirect gap properties and compatibility with Si complementary metal oxide ...

Liu, Jifeng

194

acopladas entre si: Topics by E-print Network  

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

and analysis of lateral SiC N-emitter SiGe P-base Schottky metal-collector (NPM) HBT on SOI Engineering Websites Summary: on SOI M. Jagadesh Kumar *, C. Linga Reddy...

195

asociat si rezultatele: Topics by E-print Network  

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

and analysis of lateral SiC N-emitter SiGe P-base Schottky metal-collector (NPM) HBT on SOI Engineering Websites Summary: on SOI M. Jagadesh Kumar *, C. Linga Reddy...

196

ambiant si impactul: Topics by E-print Network  

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

and analysis of lateral SiC N-emitter SiGe P-base Schottky metal-collector (NPM) HBT on SOI Engineering Websites Summary: on SOI M. Jagadesh Kumar *, C. Linga Reddy...

197

al si application: Topics by E-print Network  

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

that could boost Si-based wireless technology 99 High Performance Polycrystalline SiGe Thin Film Transistors Using Al2O3 Gate Insulator Materials Science Websites Summary:...

198

Electronic Origin For The Phase Transition From Amorphous LixSi To Crystalline Li15Si4  

SciTech Connect (OSTI)

Silicon has been widely explored as an anode material for lithium ion battery. Upon lithiation, silicon transforms to amorphous LixSi (a-LixSi) via electrochemical driven solid state amorphization. With increasing lithium concentration, a-LixSi transforms to crystalline Li15Si4 (c-Li15Si4). The mechanism of this crystallization process is not known. In this paper, we report the fundamental characteristics of the phase transition of a-LixSi to c-Li15Si4 using in-situ scanning transmission electron microscopy (STEM), electron energy loss spectroscopy (EELS), and density function theory (DFT) calculation. We find that when the lithium concentration in a-LixSi reaches a critical value of x = 3.75, the a-Li3.75Si spontaneously and congruently transforms to c-Li15Si4 by a process that is solely controlled by the lithium concentration in the a-LixSi, involving neither large scale atomic migration nor phase separation. DFT calculations indicate that c-Li15Si4 formation is favored over other possible crystalline phases due to the similarity in electronic structure with a-Li3.75Si.

Gu, Meng; Wang, Zhiguo; Connell, Justin G.; Perea, Daniel E.; Lauhon, Lincoln J.; Gao, Fei; Wang, Chong M.

2013-06-24T23:59:59.000Z

199

Fiber/Matrix Interfacial Thermal Conductance Effect on the Thermal Conductivity of SiC/SiC Composites  

SciTech Connect (OSTI)

SiC/SiC composites used in fusion reactor applications are subjected to high heat fluxes and require knowledge and tailoring of their in-service thermal conductivity. Accurately predicting the thermal conductivity of SiC/SiC composites as a function of temperature will guide the design of these materials for their intended use, which will eventually include the effects of 14-MeV neutron irradiations. This paper applies an Eshelby-Mori-Tanaka approach (EMTA) to compute the thermal conductivity of unirradiated SiC/SiC composites. The homogenization procedure includes three steps. In the first step EMTA computes the homogenized thermal conductivity of the unidirectional (UD) SiC fiber embraced by its coating layer. The second step computes the thermal conductivity of the UD composite formed by the equivalent SiC fibers embedded in a SiC matrix, and finally the thermal conductivity of the as-formed SiC/SiC composite is obtained by averaging the solution for the UD composite over all possible fiber orientations using the second-order fiber orientation tensor. The EMTA predictions for the transverse thermal conductivity of several types of SiC/SiC composites with different fiber types and interfaces are compared to the predicted and experimental results by Youngblood et al.

Nguyen, Ba Nghiep; Henager, Charles H.

2013-04-20T23:59:59.000Z

200

Texas Transportation Poll Final report  

E-Print Network [OSTI]

Texas Transportation Poll Final report PRC 14-16-F #12;2 Texas Transportation Poll Texas A&M Transportation Institute PRC 14-16-F September 2014 Authors Chris Simek Tina Geiselbrecht #12;3 Table of Contents .......................................................................................................................... 8 Transportation Funding

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Transportation Systems Engineering GRADUATE STUDIES  

E-Print Network [OSTI]

Transportation Systems Engineering GRADUATE STUDIES TRANSPORTATION SYSTEMS are the building blocks and provides for an improved quality of life. However, transportation systems by their very nature also affect the environment through physical construction and operation of transportation facilities, and through the travel

Wang, Yuhang

202

Advanced Vehicle Electrification and Transportation Sector Electrifica...  

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

More Documents & Publications Advanced Vehicle Electrification and Transportation Sector Electrification Advanced Vehicle Electrification & Transportation Sector...

203

Oxidation Behavior of Mo-Si-B Alloys in Wet Air  

SciTech Connect (OSTI)

Multiphase composite alloys based on the Mo-Si-B system are candidate materials for ultra-high temperature applications. In non load-bearing uses such as thermal barrier coatings or heat exchangers in fossil fuel burners, these materials may be ideally suited. The present work investigated the effect of water vapor on the oxidation behavior of Mo-Si-B phase assemblages. Three alloys were studied: Alloy 1 = Mo{sub 5}Si{sub 3}B{sub x} (T1)- MoSi{sub 2}- MoB, Alloy 2 = T1- Mo{sub 5}SiB{sub 2} (T2)- Mo{sub 3}Si, and Alloy 3 = Mo- T2- Mo{sub 3}Si. Tests were conducted at 1000 and 1100C in controlled atmospheres of dry air and wet air nominally containing 18, 55, and 150 Torr H{sub 2}O. The initial mass loss of each alloy was approximately independent of the test temperature and moisture content of the atmosphere. The magnitude of these initial losses varied according to the Mo content of the alloys. All alloys formed a continuous, external silica scale that protected against further mass change after volatilization of the initially formed MoO{sub 3}. All alloys experienced a small steady state mass change, but the calculated rates cannot be quantitatively compared due to statistical uncertainty in the individual mass measurements. Of particular interest is that Alloy 3, which contains a significant volume fraction of Mo metal, formed a protective scale. All alloys formed varying amounts of subscale Mo and MoO{sub 2}. This implies that oxygen transport through the external silica scale has been significantly reduced. For all alloys, water vapor accelerated the growth of a multiphase interlayer at the silica scale/unoxidized alloy interface. This interlayer is likely composed of fine Mo and MoO{sub 2} that is dispersed within a thin silica matrix. Alloy 3 was particularly sensitive to water accelerated growth of this interlayer. At 1100 C, the scale thickness after 300 hours increased from about 20 mm in dry air to nearly 100 mm in wet air.

M. Kramer; A. Thom; O. Degirmen; V. Behrani; M. Akinc

2002-04-22T23:59:59.000Z

204

NREL: Transportation Research - Transportation Secure Data Center  

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 Test and Evaluation PhotoSystemsTransportation Secure

205

NREL: Transportation Research - Transportation and Hydrogen Newsletter:  

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 Test and Evaluation PhotoSystemsTransportation

206

Monolithic Ge/Si Avalanche Photodiodes Yimin Kanga*  

E-Print Network [OSTI]

Monolithic Ge/Si Avalanche Photodiodes Yimin Kanga* , Mike Morsea , Mario J. Panicciaa , Moshe, Charlottesville, VA 22904, USA Abstract: We demonstrate mesa-type and waveguide-type Ge/Si avalanche photodiodes. Research on the Ge/Si photodiodes, one of the fundamental components needed for building integrated silicon

Bowers, John

207

FRET-Labeled siRNA Probes for Tracking Assembly and Disassembly of siRNA-Nanocomplexes  

E-Print Network [OSTI]

The assembly, stability, and timely disassembly of short interfering RNA (siRNA) nanocomplexes have the potential to affect the efficiency of siRNA delivery and gene silencing. As such, the design of new probes that can ...

Alabi, Christopher Akinleye

208

Director Position Center for Urban Transportation  

E-Print Network [OSTI]

Director Position Center for Urban Transportation The Center for Urban Transportation Research for state policymakers, transportation agencies, transportation professionals and the public. CUTR conducts of Transportation's Federal Transit Administration and Federal Highway Administration, the Florida Department

Arslan, HĂĽseyin

209

Delaware Transportation Infrastructure Forum Problem Identification Statements  

E-Print Network [OSTI]

2013 Delaware Transportation Infrastructure Forum Problem Identification Statements Sponsored by The Delaware Center for Transportation and the Delaware Department of Transportation Delaware Center for Transportation Your main resource for transportation education and research Identifying Important Issues Related

Firestone, Jeremy

210

JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO  

E-Print Network [OSTI]

JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO 2001 TRANSPORTATION TOMORROW SURVEY of Transportation, Ontario Additions in 1996 Regional Municipalities of Niagara, Waterloo Counties of Peterborough not to participate) #12;JOINT PROGRAM IN TRANSPORTATION UNIVERSITY OF TORONTO 2001 TRANSPORTATION TOMORROW SURVEY

Toronto, University of

211

Investigation of the transition layer in 3C-SiC/6H-SiC heterostructures  

SciTech Connect (OSTI)

Transmission electron microscopy and the cathodoluminescence method are used to study the transition region in 3C-SiC/6H-SiC heterostructures. It is shown that this region is, as a rule, constituted by alternating 3C-SiC and 6H-SiC layers with the possible inclusion of other silicon carbide polytypes. An assumption is made that this structure of the transition region can be explained in terms of the model of spinodal decomposition.

Lebedev, A. A.; Zamorianskaya, M. V.; Davydov, S. Yu.; Kirilenko, D. A.; Lebedev, S. P., E-mail: shura.lebe@mail.ioffe.ru; Sorokin, L. M.; Shustov, D. B.; Scheglov, M. P. [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)] [Russian Academy of Sciences, Ioffe Physical-Technical Institute (Russian Federation)

2013-11-15T23:59:59.000Z

212

FIRING STABILITY OF SiNy / SiNx SURFACE PASSIVATION STACKS FOR CRYSTALLINE SILICON SOLAR CELLS  

E-Print Network [OSTI]

to passivate the phosphorous-diffused emitter at the front. The passivation of these SiNx films deposited

213

Method for enhancing growth of SiO.sub.2 in Si by the implantation of germanium  

DOE Patents [OSTI]

A method for enhancing the conversion of Si to SiO.sub.2 in a directional fashion wherein steam or wet oxidation of Si is enhanced by the prior implantation of Ge into the Si. The unique advantages of the Ge impurity include the directional enhancement of oxidation and the reduction in thermal budget, while at the same time, Ge is an electrically inactive impurity.

Holland, Orin W. (Oak Ridge, TN); Fathy, Dariush (Knoxville, TN); White, Clark W. (Oak Ridge, TN)

1990-04-24T23:59:59.000Z

214

Electronic transport in graphene-based heterostructures  

SciTech Connect (OSTI)

While boron nitride (BN) substrates have been utilized to achieve high electronic mobilities in graphene field effect transistors, it is unclear how other layered two dimensional (2D) crystals influence the electronic performance of graphene. In this Letter, we study the surface morphology of 2D BN, gallium selenide (GaSe), and transition metal dichalcogenides (tungsten disulfide (WS{sub 2}) and molybdenum disulfide (MoS{sub 2})) crystals and their influence on graphene's electronic quality. Atomic force microscopy analysis shows that these crystals have improved surface roughness (root mean square value of only ?0.1?nm) compared to conventional SiO{sub 2} substrate. While our results confirm that graphene devices exhibit very high electronic mobility (?) on BN substrates, graphene devices on WS{sub 2} substrates (G/WS{sub 2}) are equally promising for high quality electronic transport (????38?000 cm{sup 2}/V s at room temperature), followed by G/MoS{sub 2} (????10?000 cm{sup 2}/V s) and G/GaSe (????2200 cm{sup 2}/V s). However, we observe a significant asymmetry in electron and hole conduction in G/WS{sub 2} and G/MoS{sub 2} heterostructures, most likely due to the presence of sulphur vacancies in the substrate crystals. GaSe crystals are observed to degrade over time even under ambient conditions, leading to a large hysteresis in graphene transport making it a less suitable substrate.

Tan, J. Y.; Avsar, A.; Balakrishnan, J.; Taychatanapat, T.; O'Farrell, E. C. T.; Eda, G.; Castro Neto, A. H. [Graphene Research Center, National University of Singapore, Singapore 117542 (Singapore); Department of Physics, National University of Singapore, Singapore 117542 (Singapore); Koon, G. K. W.; Özyilmaz, B., E-mail: barbaros@nus.edu.sg [Graphene Research Center, National University of Singapore, Singapore 117542 (Singapore); Department of Physics, National University of Singapore, Singapore 117542 (Singapore); NanoCore, National University of Singapore, Singapore 117576 (Singapore); Watanabe, K.; Taniguchi, T. [National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044 (Japan)

2014-05-05T23:59:59.000Z

215

Progress in Solving the Elusive Ag Transport Mechanism in TRISO Coated Particles: What is new?  

SciTech Connect (OSTI)

The TRISO particle for HTRs has been developed to an advanced state where the coating withstands internal gas pressures and retains fission products during irradiation and under postulated accidents. However, one exception is Ag that has been found to be released from high quality TRISO coated particles when irradiated and can also during high temperature accident heating tests. Although out- of- pile laboratory tests have never hither to been able to demonstrate a diffusion process of Ag in SiC, effective diffusion coefficients have been derived to successfully reproduce measured Ag-110m releases from irradiated HTR fuel elements, compacts and TRISO particles It was found that silver transport through SiC does not proceed via bulk volume diffusion. Presently grain boundary diffusion that may be irradiation enhanced either by neutron bombardment or by the presence of fission products such as Pd, are being investigated. Recent studies of irradiated AGR-1 TRISO fuel using scanning transmission electron microscopy (STEM), transmission kukuchi diffraction (TKD) patterns and high resolution transmission electron microscopy (HRTEM) have been used to further the understanding of Ag transport through TRISO particles. No silver was observed in SiC grains, but Ag was identified at triple-points and grain boundaries of the SiC layer in the TRISO particle. Cadmium was also found in some of the very same triple junctions, but this could be related to silver behavior as Ag-110m decays to Cd-110. Palladium was identified as the main constituent of micron-sized precipitates present at the SiC grain boundaries and in most SiC grain boundaries and the potential role of Pd in the transport of Ag will be discussed.

Isabella Van Rooyen

2014-10-01T23:59:59.000Z

216

Multi-modal Transportation > Highway Transportation > Trucking > Railroad transportation > Public transit > Rural transportation > Rural transit > Freight pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedes  

E-Print Network [OSTI]

and development > Airport maintenance > Bicycle and pedestrian > Ports and waterways >>> Transportation operat and development > Airport maintenance > Bicycle and pedestrian > Ports and waterways >>> Transportation operations pipeline transportation > Airport planning and development > Airport maintenance > Bicycle and pedestrian

217

Si-based RF MEMS components.  

SciTech Connect (OSTI)

Radio frequency microelectromechanical systems (RF MEMS) are an enabling technology for next-generation communications and radar systems in both military and commercial sectors. RF MEMS-based reconfigurable circuits outperform solid-state circuits in terms of insertion loss, linearity, and static power consumption and are advantageous in applications where high signal power and nanosecond switching speeds are not required. We have demonstrated a number of RF MEMS switches on high-resistivity silicon (high-R Si) that were fabricated by leveraging the volume manufacturing processes available in the Microelectronics Development Laboratory (MDL), a Class-1, radiation-hardened CMOS manufacturing facility. We describe novel tungsten and aluminum-based processes, and present results of switches developed in each of these processes. Series and shunt ohmic switches and shunt capacitive switches were successfully demonstrated. The implications of fabricating on high-R Si and suggested future directions for developing low-loss RF MEMS-based circuits are also discussed.

Stevens, James E.; Nordquist, Christopher Daniel; Baker, Michael Sean; Fleming, James Grant; Stewart, Harold D.; Dyck, Christopher William

2005-01-01T23:59:59.000Z

218

Efficient Transportation Decision Public Web Site: Bridging the Gap Between Transportation Planning and the Public  

E-Print Network [OSTI]

for accomplishing transportation planning and projectprocess – the Efficient Transportation Decision Making (Process - is to make transportation decisions more quickly

Roaza, Ruth

2007-01-01T23:59:59.000Z

219

Transportation Institutional Plan  

SciTech Connect (OSTI)

This Institutional Plan is divided into three chapters. Chapter 1 provides background information, discusses the purposes of the Plan and the policy guidance for establishing the transportation system, and describes the projected system and the plans for its integrated development. Chapter 2 discusses the major participants who must interact to build the system. Chapter 3 suggests mechanisms for interaction that will foster wide participation in program planning and implementation and provides a framework for managing and resolving the issues related to development and operation of the transportation system. A list of acronyms and a glossary are included for the reader's convenience. Also included in this Plan are four appendices. Of particular importance is Appendix A, which includes detailed discussion of specific transportation issues. Appendices B, C, and D provide supporting material to assist the reader in understanding the roles of the involved institutions.

Not Available

1986-08-01T23:59:59.000Z

220

Thermodynamic and kinetic control of the lateral Si wire growth  

SciTech Connect (OSTI)

Reproducible lateral Si wire growth has been realized on the Si (100) surface. In this paper, we present experimental evidence showing the unique role that carbon plays in initiating lateral growth of Si wires on a Si (100) substrate. Once initiated in the presence of ?5 ML of C, lateral growth can be achieved in the range of temperatures, T?=?450–650?°C, and further controlled by the interplay of the flux of incoming Si atoms with the size and areal density of Au droplets. Critical thermodynamic and kinetic aspects of the growth are discussed in detail.

Dedyulin, Sergey N., E-mail: sdedyuli@uwo.ca; Goncharova, Lyudmila V. [Department of Physics and Astronomy, The University of Western Ontario, 1151 Richmond St., London, Ontario N6A 3K7 (Canada)

2014-03-24T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

Experimental constraints on transport  

SciTech Connect (OSTI)

Characterization of the cross-field energy transport in magnetic confinement experiments in a manner applicable to the accurate assessment of future machine performance continues to be a challenging goal. Experimental results from the DIII-D tokamak in the areas of dimensionless scaling and non-diffusive transport represent progress toward this goal. Dimensionless scaling shows how beneficial the increase in machine size and magnetic field is for future devices. The experiments on DIII-D are the first to determine separately the electron and ion scaling with normalized gyroradius {rho}{sub *}; the electrons scale as expected from gyro-Bohm class theories, while the ions scale consistent with the Goldston empirical scaling. This result predicts an increase in transport relative to Bohm diffusion as {rho}{sub *} decreases in future devices. The existence of distinct {rho}{sub *} scalings for ions and electrons cautions against a physical interpretation of one-fluid or global analysis. The second class of experiments reported here are the first to demonstrate the existence of non-diffusive energy transport. Electron cyclotron heating was applied at the half radius; the electron temperature profile remains substantially peaked. Power balance analysis indicates that heat must flow in the direction of increasing temperature, which is inconsistent with purely diffusive transport. The dynamics of electron temperature perturbations indicate the presence in the heat flux of a term dependent on temperature rather than its gradient. These two observations strongly constrain the types of models which can be applied to cross-field heat transport.

Luce, T.C.; Petty, K.H.; Burrell, K.H.; Forest, C.B.; Gohil, P.; Groebner, R.J.; De Haas, J.C.M.; James, R.A.; Makowski, M.A.

1994-12-01T23:59:59.000Z

222

Evaluate Si Layers: Cooperative Research and Development Final Report, CRADA Number CRD-07-255  

SciTech Connect (OSTI)

Evaluate Si layers based on heteroepitaxial Si growth on RABITS textured metal substrates coated with textured buffer layers.

Teplin, C.

2013-04-01T23:59:59.000Z

223

Transporting Hazardous Materials  

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 ConchasPassiveSubmittedStatusButlerTransportation From modeling and simulationTransporting

224

Smart vehicular transportation systems  

SciTech Connect (OSTI)

This work builds upon established Sandia intelligent systems technology to develop a unique approach for the integration of intelligent system control into the US Highway and urban transportation systems. The Sandia developed concept of the COPILOT controller integrates a human driver with computer control to increase human performance while reducing reliance on detailed driver attention. This research extends Sandia expertise in sensor based, real-time control of robotics systems to high speed transportation systems. Knowledge in the form of maps and performance characteristics of vehicles provides the automatic decision making intelligence needed to plan optimum routes, maintain safe driving speeds and distances, avoid collisions, and conserve fuel.

Little, C.Q.; Wilson, C.W.

1997-05-01T23:59:59.000Z

225

Prediction of Thermal Conductivity for Irradiated SiC/SiC Composites by Informing Continuum Models with Molecular Dynamics Data  

SciTech Connect (OSTI)

This article proposes a new method to estimate the thermal conductivity of SiC/SiC composites subjected to neutron irradiation. The modeling method bridges different scales from the atomic scale to the scale of a 2D SiC/SiC composite. First, it studies the irradiation-induced point defects in perfect crystalline SiC using molecular dynamics (MD) simulations to compute the defect thermal resistance as a function of vacancy concentration and irradiation dose. The concept of defect thermal resistance is explored explicitly in the MD data using vacancy concentrations and thermal conductivity decrements due to phonon scattering. Point defect-induced swelling for chemical vapor deposited (CVD) SiC as a function of irradiation dose is approximated by scaling the corresponding MD results for perfect crystal ?-SiC to experimental data for CVD-SiC at various temperatures. The computed thermal defect resistance, thermal conductivity as a function of grain size, and definition of defect thermal resistance are used to compute the thermal conductivities of CVD-SiC, isothermal chemical vapor infiltrated (ICVI) SiC and nearly-stoichiometric SiC fibers. The computed fiber and ICVI-SiC matrix thermal conductivities are then used as input for an Eshelby-Mori-Tanaka approach to compute the thermal conductivities of 2D SiC/SiC composites subjected to neutron irradiation within the same irradiation doses. Predicted thermal conductivities for an irradiated Tyranno-SA/ICVI-SiC composite are found to be comparable to available experimental data for a similar composite ICVI-processed with these fibers.

Nguyen, Ba Nghiep; Gao, Fei; Henager, Charles H.; Kurtz, Richard J.

2014-05-01T23:59:59.000Z

226

Electrochemically controlled transport of lithium through ultrathin SiO2 Nava Ariel,a  

E-Print Network [OSTI]

integrated circuit IC requires the development of a thin-film solid-state battery compatible with silicon IC supply, onto the silicon chip. This requires the development of a thin-film solid-state battery candidate in a solid-state power cell integrated on silicon. Other components of the thin-film cell

227

Double-dot charge transport in Si single-electronhole transistors L. P. Rokhinson,a)  

E-Print Network [OSTI]

­oxide­ semiconductor field-effect transistors MOSFETs brought to light several issues related to the electrical beneath the dot transforming it into a free-standing bridge. Subsequently, 40 or 50 nm of oxide are thermally grown which further reduce the size of the dot. Polysilicon gate is deposited over the bridge

Rokhinson, Leonid

228

Study of transport properties in graphene monolayer flakes on SiO[sub 2] substrates  

E-Print Network [OSTI]

We investigate the carrier mobility in monolayer and bilayer graphene with a top HfO2dielectric, as a function of the HfO2film thickness and temperature. The results show that the carrier mobility decreases during the ...

Tirado, J. M.

229

MODEL-BASED FEEDBACK CONTROL FOR AN AUTOMATED TRANSFER OUT OF SI OPERATION DURING SI TO HCCI TRANSITIONS IN GASOLINE ENGINES  

E-Print Network [OSTI]

MODEL-BASED FEEDBACK CONTROL FOR AN AUTOMATED TRANSFER OUT OF SI OPERATION DURING SI TO HCCI for the transition between spark ignition (SI) and homo- geneous charge compression ignition (HCCI) combustion modes by approaching the transfer out of SI operation during the SI into HCCI transition in a closed-loop control

Stefanopoulou, Anna

230

Comparison of Graphene Formation on C-face and Si-face SiC {0001} Surfaces Luxmi, N. Srivastava, Guowei He, and R. M. Feenstra  

E-Print Network [OSTI]

1 Comparison of Graphene Formation on C-face and Si-face SiC {0001} Surfaces Luxmi, N. Srivastava of graphene formed on the ( 1000 ) surface (the C-face) and the (0001) surface (the Si-face) of Si) and low-energy electron microscopy (LEEM). The graphene forms due to preferential sublimation of Si from

Feenstra, Randall

231

ADVANCED CUTTINGS TRANSPORT STUDY  

SciTech Connect (OSTI)

This is the second quarterly progress report for Year-4 of the ACTS Project. It includes a review of progress made in: (1) Flow Loop construction and development and (2) research tasks during the period of time between October 1, 2002 and December 30, 2002. This report presents a review of progress on the following specific tasks. (a) Design and development of an Advanced Cuttings Transport Facility Task 3: Addition of a Cuttings Injection/Separation System, Task 4: Addition of a Pipe Rotation System. (b) New research project (Task 9b): ''Development of a Foam Generator/Viscometer for Elevated Pressure and Elevated Temperature (EPET) Conditions''. (d) Research project (Task 10): ''Study of Cuttings Transport with Aerated Mud Under Elevated Pressure and Temperature Conditions''. (e) Research on three instrumentation tasks to measure: Cuttings concentration and distribution in a flowing slurry (Task 11), Foam texture while transporting cuttings. (Task 12), and Viscosity of Foam under EPET (Task 9b). (f) New Research project (Task 13): ''Study of Cuttings Transport with Foam under Elevated Pressure and Temperature Conditions''. (g) Development of a Safety program for the ACTS Flow Loop. Progress on a comprehensive safety review of all flow-loop components and operational procedures. (Task 1S). (h) Activities towards technology transfer and developing contacts with Petroleum and service company members, and increasing the number of JIP members.

Troy Reed; Stefan Miska; Nicholas Takach; Kaveh Ashenayi; Mark Pickell; Len Volk; Mike Volk; Lei Zhou; Zhu Chen; Crystal Redden; Aimee Washington

2003-01-30T23:59:59.000Z

232

Regional Transportation Performance Measures  

E-Print Network [OSTI]

in place for maintenance of pavements and structures But only general goals for modernization Case for Performance-Based Funding: What Partners Say The Pew Center on the States' recently ranked Mobility Reliability Accessibility Livability 12 #12;Transportation Performance Measurement Concepts

Illinois at Chicago, University of

233

Transportation Project Funding &  

E-Print Network [OSTI]

Transportation Center William W. Hay Railroad Engineering Seminar March 14, 2014 #12;© 2013 Stephen E. Schlickman-off benefits Strengthen revenue generation through increased ridership Reduce maintenance expenses #12 © 2013 Stephen E. Schlickman 6 #12;Financing Risk issues Reliability of your revenue stream Community

Barkan, Christopher P.L.

234

21st Annual Transportation  

E-Print Network [OSTI]

would cost more than $40 billion over next 20 years ·! If used alone, state gas tax would need more than Investment Plan ·! Mn/DOT Statewide Transportation Plan #12;MHSIS goals ·! Develop a long range vision expansions ·!Fiscally-constrained approach #12;New investment strategy ·! Realistic ·! Innovative ·! Focuses

Minnesota, University of

235

Transport of Entanglement  

E-Print Network [OSTI]

We consider the propagation of two-photon light in a random medium. We show that the Wigner distribution of the two-photon wave function obeys an equation that is analogous to the radiative transport equation for classical light. Using this result, we predict that the entanglement of a photon pair is destroyed with propagation.

Manabu Machida; Vadim A Markel; John C Schotland

2012-10-17T23:59:59.000Z

236

Policy Research TRANSPORTATION  

E-Print Network [OSTI]

to attract businesses and jobs to Texas, as the state has become increasingly dependent on the efficient will continue to be an important part of the 21st century transportation model, more efficient use of available and innovation; and · Serve as an independent resource to the Texas Legislature, providing analyses of the state

237

Ionic (Proton) Transport Hydrogen  

E-Print Network [OSTI]

environments - #12;Technology Options -- Ionic Transport Separation Systems Central, Semi-Central (coal/Semi-Central Systems Coal is the cheapest fuel, but requires the greatest pre-conditioning Clean-up of syngas requires Energy Systems ChevronTexaco SRI Consulting SAIC ChevronTexaco Technology Ventures #12;Performance

238

Storing and transporting energy  

DOE Patents [OSTI]

Among other things, hydrogen is released from water at a first location using energy from a first energy source; the released hydrogen is stored in a metal hydride slurry; and the metal hydride slurry is transported to a second location remote from the first location.

McClaine, Andrew W. (Lexington, MA); Brown, Kenneth (Reading, MA)

2010-09-07T23:59:59.000Z

239

TRANSPORTATION Policy Research CENTER  

E-Print Network [OSTI]

, and describes conditions necessary for successful public-private transportation partnerships. The researchers found that effective P3 programs rely on these factors for their success: Enabling Legislation in the process is necessary. Economic Environment: Favorable economic conditions conducive to investment-- from

240

Artificial oxygen transport protein  

DOE Patents [OSTI]

This invention provides heme-containing peptides capable of binding molecular oxygen at room temperature. These compounds may be useful in the absorption of molecular oxygen from molecular oxygen-containing atmospheres. Also included in the invention are methods for treating an oxygen transport deficiency in a mammal.

Dutton, P. Leslie

2014-09-30T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Saturated Zone Colloid Transport  

SciTech Connect (OSTI)

This scientific analysis provides retardation factors for colloids transporting in the saturated zone (SZ) and the unsaturated zone (UZ). These retardation factors represent the reversible chemical and physical filtration of colloids in the SZ. The value of the colloid retardation factor, R{sub col} is dependent on several factors, such as colloid size, colloid type, and geochemical conditions (e.g., pH, Eh, and ionic strength). These factors are folded into the distributions of R{sub col} that have been developed from field and experimental data collected under varying geochemical conditions with different colloid types and sizes. Attachment rate constants, k{sub att}, and detachment rate constants, k{sub det}, of colloids to the fracture surface have been measured for the fractured volcanics, and separate R{sub col} uncertainty distributions have been developed for attachment and detachment to clastic material and mineral grains in the alluvium. Radionuclides such as plutonium and americium sorb mostly (90 to 99 percent) irreversibly to colloids (BSC 2004 [DIRS 170025], Section 6.3.3.2). The colloid retardation factors developed in this analysis are needed to simulate the transport of radionuclides that are irreversibly sorbed onto colloids; this transport is discussed in the model report ''Site-Scale Saturated Zone Transport'' (BSC 2004 [DIRS 170036]). Although it is not exclusive to any particular radionuclide release scenario, this scientific analysis especially addresses those scenarios pertaining to evidence from waste-degradation experiments, which indicate that plutonium and americium may be irreversibly attached to colloids for the time scales of interest. A section of this report will also discuss the validity of using microspheres as analogs to colloids in some of the lab and field experiments used to obtain the colloid retardation factors. In addition, a small fraction of colloids travels with the groundwater without any significant retardation. Radionuclides irreversibly sorbed onto this fraction of colloids also transport without retardation. The transport times for these radionuclides will be the same as those for nonsorbing radionuclides. The fraction of nonretarding colloids developed in this analysis report is used in the abstraction of SZ and UZ transport models in support of the total system performance assessment (TSPA) for the license application (LA). This analysis report uses input from two Yucca Mountain Project (YMP) analysis reports. This analysis uses the assumption from ''Waste Form and In-Drift Colloids-Associated Radionuclide Concentrations: Abstraction and Summary'' that plutonium and americium are irreversibly sorbed to colloids generated by the waste degradation processes (BSC 2004 [DIRS 170025]). In addition, interpretations from RELAP analyses from ''Saturated Zone In-Situ Testing'' (BSC 2004 [DIRS 170010]) are used to develop the retardation factor distributions in this analysis.

H. S. Viswanathan

2004-10-07T23:59:59.000Z

242

In situ toughened SiC ceramics with Al-B-C additions and oxide-coated SiC platelet/SiC composites  

SciTech Connect (OSTI)

This work aimed at fabrication and characterization of high toughness SiC ceramics through the applications of in situ toughening and SiC platelet reinforcement. The processing-microstructure-property relations of hot pressed SiC with Al, B, and C additions (designated as ABC-SiC) were investigated. Through a liquid phase sintering mechanism, dense SiC was obtained by hot pressing at a temperature as low as 1,700 C with 3 wt% Al, 0.6 wt% B, and 2 wt% C additions. These sintering aids also enhanced the {beta}-to-{alpha} (3C-to-4H) phase transformation, which promoted SiC grains to grow into plate-like shapes. Under optimal processing conditions, the microstructure exhibited high-aspect-ratio plate-shaped grains with a thin (< 1 nm) Al-containing amorphous grain boundary film. The mechanical properties of the toughened SiC and the composites were evaluated in comparison with a commercial Hexoloy SiC under identical test conditions. The C-curve behavior was examined using the strength-indentation load relationship and compared with that directly measured using precracked compact tension specimens. The in situ toughened ABC-SiC exhibited much improved flaw tolerance and a significantly rising R-curve behavior. A steady-state toughness in excess of 9 MPam{sup 1/2} was recorded for the ABC-SiC in comparison to a single valued toughness below 3 MPam{sup 1/2} for the Hexoloy. Toughening in the ABC-SiC was mainly attributed to grain bridging and subsequent pullout of the plate-shaped grains. The high toughness ABC-SiC exhibited a bend strength of 650 MPa with a Weibull modulus of 19; in comparison, the commercial SiC showed a bend strength of 400 MPa with a Weibull modulus of 6. Higher fracture toughness was also achieved by the reinforcement of SiC platelets, encapsulated with alumina, yttria, or silica, in a SiC matrix.

Cao, J. [Univ. of California, Berkeley, CA (United States). Dept. of Materials Science and Mineral Engineering; [Lawrence Berkeley National Lab., CA (United States). Materials Sciences Div.

1996-12-01T23:59:59.000Z

243

Effect of Al-Si-Al and Al-Si-Si-Al Pairs in the ZSM-5 Zeolite Framework on the 27 NMR Spectra. A Combined High-Resolution 27  

E-Print Network [OSTI]

Effect of Al-Si-Al and Al-Si-Si-Al Pairs in the ZSM-5 Zeolite Framework on the 27 Al NMR Spectra. A Combined High-Resolution 27 Al NMR and DFT/MM Study Jiri´ Dedecek, Stepan Sklenak,*, Chengbin Li, Blanka of the presence of Al-O-Si-O-Al and Al-O-Si-O-Si-O-Al sequences in the ZSM-5 zeolite framework on the local

Sklenak, Stepan

244

Project EARTH-13-AH1: Isotopic studies of continental weathering -the transport of germanium in soils and plants  

E-Print Network [OSTI]

Project EARTH-13-AH1: Isotopic studies of continental weathering - the transport of germanium silicate weathering is important if we are to understand the carbon cycle 1,2 . The similarity of Ge and Si for weathering intensity3,7-9 . However, factors driving Ge behaviour in soil remain largely unknown although

Henderson, Gideon

245

PHYSICAL REVIEW B 88, 144305 (2013) Two-channel model for nonequilibrium thermal transport in pump-probe experiments  

E-Print Network [OSTI]

150 nm of the Al/Si0.99Ge0.01 interface. The extra thermal resistance in this region is a result. INTRODUCTION The magnitude of a material's thermal conductivity and spe- cific heat is determinedPHYSICAL REVIEW B 88, 144305 (2013) Two-channel model for nonequilibrium thermal transport in pump

Cahill, David G.

246

35 Alternative Transportation Fuels in California ALTERNATIVE TRANSPORTATION  

E-Print Network [OSTI]

35 Alternative Transportation Fuels in California Chapter 4 ALTERNATIVE TRANSPORTATION FUELS IN CALIFORNIA INTRODUCTION The introduction of alternative fuels into California's transportation market has supply at low prices. But, with an uncertain long-term future for oil supplies and prices, alternative

247

Thermal Conductivity of SiC/Si Composites – Porting PNNL EMTA Code for Fusion Analyses  

SciTech Connect (OSTI)

An existing modeling method, the EMTA (Eshelby-Mori-Tanaka approach) modeling approach [1], is applied to the study of SiC/SiC 2D woven composites for fusion reactor applications for the first time, to the best of our knowledge, with excellent results. We compare EMTA model results to existing thermal conductivity data for these materials and suggest that in the future this approach can be beneficial by providing us with tools to further optimize these composite materials for fusion energy applications since the EMTA method and code can address both thermal and mechanical properties with the same framework.

Henager, Charles H.; Nguyen, Ba Nghiep

2013-04-19T23:59:59.000Z

248

Yucca MountainTransportation: Private Sector Perspective  

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

Transportation: Private Sector "Lessons Learned" US Transport Council David Blee Executive Director dblee@ustransportcouncil.org DOE Transportation External Coordination (TEC)...

249

We're All Transportation Planners  

E-Print Network [OSTI]

of facts that global warming is real, that transportationCalifornia Transportation Center, with help is a majorresearch on compelling transportation can both reduce the

Curry, Melanie

2006-01-01T23:59:59.000Z

250

Essays on Transportation Safety, Economics, and Policy  

E-Print Network [OSTI]

2002. TCF, 2000, “Widening the Transportation Divide: HowGovernor Davis’ Transportation Plan Leaves Transit-People Stranded”, Transportation Choices Forum, 2000.

Scholl, Patricia Lynn

2011-01-01T23:59:59.000Z

251

Integrated transportation system design optimization  

E-Print Network [OSTI]

Traditionally, the design of a transportation system has focused on either the vehicle design or the network flow, assuming the other as given. However, to define a system level architecture for a transportation system, ...

Taylor, Christine P. (Christine Pia), 1979-

2007-01-01T23:59:59.000Z

252

Transforming California's Freight Transport System  

E-Print Network [OSTI]

Transforming California's Freight Transport System Policy Forum on the Role of Freight Transport Standard #12;2050 Vision- Key Conceptual Outcomes Technology Transformation Early Action Cleaner Combustion Multiple Strategies Federal Action Efficiency Gains Energy Transformation 9 #12;Further reduce localized

California at Davis, University of

253

EFFECT OF SiO2 TICKNESSES IN THERMAL-SiO2/PECVD-SiN STACKS ON SURFACE PASSIVATION OF n-TYPE Cz SILICON SUBSTRATES  

E-Print Network [OSTI]

. A prominent example of SiO2 surface passivation is given by the world-record solar cell efficiency of the passivated-emitter and rear locally- diffused (PERL) c-Si solar cell [1]. The surface passivation of the as the standard RCA procedure prior to oxidation in a cleaned quartz furnace tube at high temperat

254

The National Transport Data Framework  

E-Print Network [OSTI]

................................................................................................................ 14 NTDF PROTOTYPE ............................................................................................................................... 14 NTDF ARCHITECTURE... ................................................................................................................................. 27 RESOURCING .......................................................................................................................................... 27 ? The National Transport Data Framework March 2008 ? Page 2 SUSTAINABILITY...

Landshoff, Peter Vincent; Polak, John

2008-08-18T23:59:59.000Z

255

Transporting export coal from Appalachia  

SciTech Connect (OSTI)

This publication is part of a series titled Market Guide for Steam Coal Exports from Appalachia. It focuses on the transportation link in the steam-coal supply chain, enabling producers to further assess their transportation options and their ability to compete in the export-coal marketplace. Transportation alternatives and handling procedures are discussed, and information is provided on the costs associated with each element in the transportation network.

Not Available

1982-11-01T23:59:59.000Z

256

Direct growth of few-layer graphene on 6H-SiC and 3C-SiC/Si via propane chemical vapor deposition  

SciTech Connect (OSTI)

We propose to grow graphene on SiC by a direct carbon feeding through propane flow in a chemical vapor deposition reactor. X-ray photoemission and low energy electron diffraction show that propane allows to grow few-layer graphene (FLG) on 6H-SiC(0001). Surprisingly, FLG grown on (0001) face presents a rotational disorder similar to that observed for FLG obtained by annealing on (000-1) face. Thanks to a reduced growth temperature with respect to the classical SiC annealing method, we have also grown FLG/3C-SiC/Si(111) in a single growth sequence. This opens the way for large-scale production of graphene-based devices on silicon substrate.

Michon, A.; Vezian, S.; Portail, M. [CNRS-CRHEA, Rue Bernard Gregory, 06560 Valbonne (France); Ouerghi, A. [CNRS-LPN, Route de Nozay, 91460 Marcoussis (France); Zielinski, M.; Chassagne, T. [NOVASiC, Savoie Technolac, Arche Bat 4, BP267, 73375 Le Bourget du Lac (France)

2010-10-25T23:59:59.000Z

257

Do Si stars undergo any magnetic braking?  

E-Print Network [OSTI]

The old question of rotational braking of Ap Si stars is revisited on the empirical side, taking advantage of the recent Hipparcos results. Field stars with various evolutionary states are considered, and it is shown that the loose correlation between their rotational period and their surface gravity is entirely compatible with conservation of angular momentum. No evidence is found for any loss of angular momentum on the Main Sequence, which confirms earlier results based on less reliable estimates of surface gravity. The importance of reliable, fundamental Teff determinations of Bp and Ap stars is emphasized.

P. North

1998-02-23T23:59:59.000Z

258

Isoscalar giant resonance strength in Si-28  

E-Print Network [OSTI]

PHYSICAL REVIEW C 76, 027304 (2007) Isoscalar giant resonance strength in 28Si D. H. Youngblood, Y.-W. Lui, and H. L. Clark Cyclotron Institute, Texas A&M University, College Station, Texas 77843, USA (Received 7 May 2007; published 28 August... that somewhat mimic an E1 angular distribution. This work was supported in part by the U.S. Department of Energy under grant No. DE-FG03-93ER40773 and by The Robert A. Welch Foundation under grant No. A-0558. [1] D. H. Youngblood, Y.-W. Lui, and H. L. Clark...

Youngblood, David H.; Lui, Y. -W; Clark, H. L.

2007-01-01T23:59:59.000Z

259

Phonon-assisted transient electroluminescence in Si  

SciTech Connect (OSTI)

The phonon-replica infrared emission is observed at room temperature from indirect band gap Si light-emitting diode under forward bias. With increasing injection current density, the broadened electroluminescence spectrum and band gap reduction are observed due to joule heating. The spectral-resolved temporal response of electroluminescence reveals the competitiveness between single (TO) and dual (TO?+?TA) phonon-assisted indirect band gap transitions. As compared to infrared emission with TO phonon-replica, the retarder of radiative recombination at long wavelength region (?1.2??m) indicates lower transition probability of dual phonon-replica before thermal equivalent.

Cheng, Tzu-Huan, E-mail: f94943139@ntu.edu.tw [Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei, Taiwan (China); Chu-Su, Yu [Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan and Department of Laboratory Medicine, National Taiwan University Hospital, Taipei, Taiwan (China); Liu, Chien-Sheng [Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan (China); Lin, Chii-Wann [Institute of Biomedical Engineering and Institute of Electrical Engineering, National Taiwan University, Taipei, Taiwan (China)

2014-06-30T23:59:59.000Z

260

Si Brilliant Technology 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 CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty Ltd Jump to: navigation,Pvt LtdShrub Oak, New York: Energy ResourcesSi

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

[SiAu4]: Aurosilane. | EMSL  

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

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262

Sandia National Laboratories: SiC  

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

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263

A=17Si (1993TI07)  

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

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264

6 Ion Transport, Osmoregulation, and  

E-Print Network [OSTI]

177 6 Ion Transport, Osmoregulation, and Acid­Base Balance W.S. Marshall and M. Grosell CONTENTS I)............................................................................182 5. Skin and Opercular Membrane..................................................................................................183 2. Sea-Water Transport Mode -- Na+,K+-ATPase and Na+,K+, 2Cl­ Co-transport

Grosell, Martin

265

Integrated Transportation System Design Optimization  

E-Print Network [OSTI]

Integrated Transportation System Design Optimization by Christine Taylor B.S. Cornell University by . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Professor Jaime Peraire Chairman, Department Graduate Committee #12;2 #12;Integrated Transportation System Abstract Traditionally, the design of a transportation system has focused on either the vehicle design

266

Council of University Transportation Centers  

E-Print Network [OSTI]

Council of University Transportation Centers 13th Anniversary CUTC Awards Banquet January 9, 2010 Omni Shoreham Hotel Washington, D.C. #12;Council of University Transportation Centers 13th Anniversary Awards Banquet Saturday, January 9, 2010 Welcome Stephen Albert, CUTCVice-President WesternTransportation

Nagurney, Anna

267

Transportation Center Seminar........ Patrice Marcotte  

E-Print Network [OSTI]

Transportation Center Seminar........ Patrice Marcotte Professor and Acting Director Computer on a Transportation Network With Rigid Capacities" Abstract: Static network equilibrium is a well transportation network, taking into account that users behave selfishly, i.e., only travel on shortest paths

Bustamante, Fabián E.

268

Thermomechanical Performance of Si-Ti-C-O and Sintered SiC Fiber-Bonded Ceramics at High Temperatures  

SciTech Connect (OSTI)

The stress-temperature-lifetime response of Si-Ti-C-O fiber-bonded ceramic (Tyrannohex ) and sintered SiC fiber-bonded ceramic (SA-Tyrannohex ) materials were investigated in air from 500 to 1150 C and 500 to 1400 C, respectively. The apparent threshold stress of Si-Ti-C-O fiber-bonded ceramic was about 175 MPa in the 500-1150 C temperature range. When the applied stress of the sintered SiC fiber-bonded ceramic was below an apparent threshold stress (e.g., ~225MPa) for tests conducted 1150 C, no failures were observed for lifetimes up to 1000h. In the case of sintered SiC fiber-bonded ceramic, at the temperature of 1300 C, the apparent threshold stress decreased to 175 MPa. The decrease in strength seemed to be caused by grain growth which was confirmed from the SEM fractography. Both fiber-bonded ceramics exhibited much higher durability than a commercial SiC/SiC composite at temperatures above 500 C. In addition, results suggested that the sintered SiC fiber-bonded ceramic (SA-Tyrannohex) is more stable than a Hi-Nicalon/MI SiC composite with BN/SiC fiber coating at temperatures above 1300 C.

Matsunaga, Tadashi [ORNL; Lin, Hua-Tay [ORNL; Singh, Mrityunjay [NASA-Glenn Research Center, Cleveland; Kajii, Shinji [Ube Industries, Ltd.; Matsunaga, Kenji [Ube Industries, Ltd.; Ishikawa, Toshihiro [Ube Industries, Ltd.

2011-01-01T23:59:59.000Z

269

Fuel cell water transport  

DOE Patents [OSTI]

The moisture content and temperature of hydrogen and oxygen gases is regulated throughout traverse of the gases in a fuel cell incorporating a solid polymer membrane. At least one of the gases traverses a first flow field adjacent the solid polymer membrane, where chemical reactions occur to generate an electrical current. A second flow field is located sequential with the first flow field and incorporates a membrane for effective water transport. A control fluid is then circulated adjacent the second membrane on the face opposite the fuel cell gas wherein moisture is either transported from the control fluid to humidify a fuel gas, e.g., hydrogen, or to the control fluid to prevent excess water buildup in the oxidizer gas, e.g., oxygen. Evaporation of water into the control gas and the control gas temperature act to control the fuel cell gas temperatures throughout the traverse of the fuel cell by the gases.

Vanderborgh, Nicholas E. (Los Alamos, NM); Hedstrom, James C. (Los Alamos, NM)

1990-01-01T23:59:59.000Z

270

Parallel Transports in Webs  

E-Print Network [OSTI]

For connected reductive linear algebraic structure groups it is proven that every web is holonomically isolated. The possible tuples of parallel transports in a web form a Lie subgroup of the corresponding power of the structure group. This Lie subgroup is explicitly calculated and turns out to be independent of the chosen local trivializations. Moreover, explicit necessary and sufficient criteria for the holonomical independence of webs are derived. The results above can even be sharpened: Given an arbitrary neighbourhood of the base points of a web, then this neighbourhood contains some segments of the web whose parameter intervals coincide, but do not include 0 (that corresponds to the base points of the web), and whose parallel transports already form the same Lie subgroup as those of the full web do.

Christian Fleischhack

2003-07-17T23:59:59.000Z

271

Microstructures of Si surface layers implanted with Cu  

SciTech Connect (OSTI)

Microstructures of Si ion-implanted with Cu have been characterized by TEM after annealing. For 1.2 at.%, the Cu is trapped at planar defects, but for 10 at.%, {eta}-Cu{sub 3}Si forms and Cu diffuses at its equilibrium solubility. These observations allow proper evaluation of the binding energies of Cu to previously formed internal cavities (2.2 eV) and {eta}-Cu{sub 3}Si (1.7 eV). The 10 at.% Cu layer promotes oxidation of Si catalyzed by {eta}-Cu{sub 3}Si. The microstructures also indicate that Si implanted with {approximately}2 at.% Cu reforms epitaxially with embedded defects after 8 hr at 700C, but for {approximately}10 at.% Cu, epitaxy is not recovered after 6 hours at 600C.

Follstaedt, D.M.; Myers, S.M.

1993-12-31T23:59:59.000Z

272

Microwave joining of SiC ceramics and composites  

SciTech Connect (OSTI)

Potential applications of SiC include components for advanced turbine engines, tube assemblies for radiant burners and petrochemical processing and heat exchangers for high efficiency electric power generation systems. Reliable methods for joining SiC are required in order to cost-effectively fabricate components for these applications from commercially available shapes and sizes. This manuscript reports the results of microwave joining experiments performed using two different types of SiC materials. The first were on reaction bonded SiC, and produced joints with fracture toughness equal to or greater than that of the base material over an extended range of joining temperatures. The second were on continuous fiber-reinforced SiC/SiC composite materials, which were successfully joined with a commercial active brazing alloy, as well as by using a polymer precursor.

Ahmad, I.; Silberglitt, R.; Tian, Y.L. [FM Technologies, Inc., Fairfax, VA (United States); Katz, J.D. [Los Alamos National Lab., NM (United States)

1997-04-01T23:59:59.000Z

273

Transportation | Argonne National Laboratory  

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

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274

Transportation | ornl.gov  

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 ConchasPassiveSubmittedStatusButlerTransportation From modeling and simulation programs

275

Transporting Dry Ice  

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

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276

Transporting with Dry Shippers  

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 ConchasPassiveSubmittedStatusButlerTransportation From modeling and

277

Tribological Properties of Self-assembled Monolayers on Au, SiOx and Si Surfaces  

SciTech Connect (OSTI)

Using interracial force microscopy (IFM), the tribological properties of self-assembled monolayer (SAM) on Si surfaces produced by a new chemical strategy are investigated and compared to those of classical SAM systems, which include alkanethiols on Au and alkylsilanes on SiO{sub x}. The new SAM films are prepared by depositing n-alkyl chains with OH-terminations onto Cl-terminated Si substrates. The chemical nature of the actual lubricating molecules, n-dodecyl, is kept constant in all three thin film systems for direct comparison and similarities and differences in tribological properties are observed. The adhesion strength is virtually identical for all three systems; however, frictional properties differ due to differences in film packing. Differences in the chemical bonds that attach the lubricant molecules to the substrate are also discussed as they influence variations in film wear and durability. It is demonstrated that the new SAM films are capable of controlling the friction and adhesion of Si surfaces as well as the classical SAMs in addition to providing a greater potential to be more reproducible and more durable.

KIM,HYUN I.; BOIADJIEV,V.; HOUSTON,JACK E.; ZHU,X.-Y; KIELY,J.D.

2000-07-20T23:59:59.000Z

278

P-type SiGe/Si Superlattice Cooler Xiaofeng Fan, Gehong Zeng, Edward Croke1  

E-Print Network [OSTI]

the temperature of the device below ambient. For a material to be a good thermoelectric cooler, it must have]. SiGe is a good thermoelectric material especially for high temperature applications [11 element thermoelectric devices, and it will enable us to achieve large cooling capacities with relatively

279

Compatibility of SiC and SiC Composites with Molten Lead  

SciTech Connect (OSTI)

The choice of structural material candidates to contain Lead at 1000 C are limited in number. Silicon carbide composites comprise one choice of possible containment materials. Short term screening studies (120 hours) were undertaken to study the behavior of Silicon Carbide, Silicon Nitride, elemental Silicon and various Silicon Carbide fiber composites focusing mainly on melt infiltrated composites. Isothermal experiments at 1000 C utilized graphite fixtures to contain the Lead and material specimens under a low oxygen partial pressure environment. The corrosion weight loss values (grams/cm{sup 2} Hr) obtained for each of the pure materials showed SiC (monolithic CVD or Hexoloy) to have the best materials compatibility with Lead at this temperature. Increased weight loss values were observed for pure Silicon Nitride and elemental Silicon. For the SiC fiber composite samples those prepared using a SiC matrix material performed better than Si{sub 3}N{sub 4} as a matrix material. Composites prepared using a silicon melt infiltration process showed larger corrosion weight loss values due to the solubility of silicon in lead at these temperatures. When excess silicon was removed from these composite samples the corrosion performance for these material improved. These screening studies were used to guide future long term exposure (both isothermal and non-isothermal) experiments and Silicon Carbide composite fabrication work.

H Tunison

2006-03-07T23:59:59.000Z

280

Surety applications in transportation  

SciTech Connect (OSTI)

Infrastructure surety can make a valuable contribution to the transportation engineering industry. The lessons learned at Sandia National Laboratories in developing surety principles and technologies for the nuclear weapons complex and the nuclear power industry hold direct applications to the safety, security, and reliability of the critical infrastructure. This presentation introduces the concepts of infrastructure surety, including identification of the normal, abnormal, and malevolent threats to the transportation infrastructure. National problems are identified and examples of failures and successes in response to environmental loads and other structural and systemic vulnerabilities are presented. The infrastructure surety principles developed at Sandia National Laboratories are described. Currently available technologies including (a) three-dimensional computer-assisted drawing packages interactively combined with virtual reality systems, (b) the complex calculational and computational modeling and code-coupling capabilities associated with the new generation of supercomputers, and (c) risk-management methodologies with application to solving the national problems associated with threats to the critical transportation infrastructure are discussed.

Matalucci, R.V.; Miyoshi, D.S.

1998-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Multiscale thermal transport.  

SciTech Connect (OSTI)

A concurrent computational and experimental investigation of thermal transport is performed with the goal of improving understanding of, and predictive capability for, thermal transport in microdevices. The computational component involves Monte Carlo simulation of phonon transport. In these simulations, all acoustic modes are included and their properties are drawn from a realistic dispersion relation. Phonon-phonon and phonon-boundary scattering events are treated independently. A new set of phonon-phonon scattering coefficients are proposed that reflect the elimination of assumptions present in earlier analytical work from the simulation. The experimental component involves steady-state measurement of thermal conductivity on silicon films as thin as 340nm at a range of temperatures. Agreement between the experiment and simulation on single-crystal silicon thin films is excellent, Agreement for polycrystalline films is promising, but significant work remains to be done before predictions can be made confidently. Knowledge gained from these efforts was used to construct improved semiclassical models with the goal of representing microscale effects in existing macroscale codes in a computationally efficient manner.

Graham, Samuel Jr. (; .); Wong, C. C.; Piekos, Edward Stanley

2004-02-01T23:59:59.000Z

282

Transportation of medical isotopes  

SciTech Connect (OSTI)

A Draft Technical Information Document (HNF-1855) is being prepared to evaluate proposed interim tritium and medical isotope production at the Fast Flux Test Facility (FFTF). This assessment examines the potential health and safety impacts of transportation operations associated with the production of medical isotopes. Incident-free and accidental impacts are assessed using bounding source terms for the shipment of nonradiological target materials to the Hanford Site, the shipment of irradiated targets from the FFTF to the 325 Building, and the shipment of medical isotope products from the 325 Building to medical distributors. The health and safety consequences to workers and the public from the incident-free transportation of targets and isotope products would be within acceptable levels. For transportation accidents, risks to works and the public also would be within acceptable levels. This assessment is based on best information available at this time. As the medical isotope program matures, this analysis will be revised, if necessary, to support development of a final revision to the Technical Information Document.

Nielsen, D.L.

1997-11-19T23:59:59.000Z

283

Higher Molecular Weight Leads to Improved Photoresponsivity Charge Transport and Interfacial Ordering in a Narrow Bandgap Semiconducting Polymer  

SciTech Connect (OSTI)

Increasing the molecular weight of the low-bandgap semiconducting copolymer, poly[(4,4-didoecyldithieno[3,2-b:2',3'-d]silole)-2,6-diyl-alt-(2,1,3-benzothiadiazole)-4,7-diyl], Si-PDTBT, from 9 kDa to 38 kDa improves both photoresponsivity and charge transport properties dramatically. The photocurrent measured under steady state conditions is 20 times larger in the higher molecular weight polymer (HM{sub n} Si-PDTBT). Different decays of polarization memory in transient photoinduced spectroscopy measurements are consistent with more mobile photoexcitations in HM{sub n} Si-PDTBT relative to the lower molecular weight counterpart (LM{sub n} Si-PDTBT). Analysis of the current-voltage characteristics of field effect transistors reveals an increase in the mobility by a factor of 700 for HM{sub n} Si-PDTBT. Near edge X-ray absorption fine structure (NEXAFS) spectroscopy and grazing incidence small angle X-ray scattering (GISAXS) measurements demonstrate that LM{sub n} Si-PDTBT forms a disordered morphology throughout the depth of the film, whereas HM{sub n} Si-PDTBT exhibits pronounced {pi}-{pi} stacking in an edge-on configuration near the substrate interface. Increased interchain overlap between polymers in the edge-on configuration in HM{sub n} Si-PDTBT results in the higher carrier mobility. The improved optical response, transport mobility, and interfacial ordering highlight the subtle role that the degree of polymerization plays on the optoelectronic properties of conjugated polymer based organic semiconductors.

M Tong; S Cho; J Rogers; K Schmidt; B Hsu; D Moses; R Coffin; E Kramer; G Bazan; A Heeger

2011-12-31T23:59:59.000Z

284

Steel-SiC Metal Matrix Composite Development  

SciTech Connect (OSTI)

The goal of this project is to develop a method for fabricating SiC-reinforced high-strength steel. We are developing a metal-matrix composite (MMC) in which SiC fibers are be embedded within a metal matrix of steel, with adequate interfacial bonding to deliver the full benefit of the tensile strength of the SiC fibers in the composite.

Smith, Don D.

2005-07-17T23:59:59.000Z

285

Structural and magnetic properties of irradiated SiC  

SciTech Connect (OSTI)

We present a comprehensive structural characterization of ferromagnetic SiC single crystals induced by Ne ion irradiation. The ferromagnetism has been confirmed by electron spin resonance, and possible transition metal impurities can be excluded to be the origin of the observed ferromagnetism. Using X-ray diffraction and Rutherford backscattering/channeling spectroscopy, we estimate the damage to the crystallinity of SiC, which mutually influences the ferromagnetism in SiC.

Wang, Yutian; Helm, Manfred [Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, P.O. Box 510119, 01314 Dresden (Germany); Technische Universität Dresden, 01062 Dresden (Germany); Chen, Xuliang; Yang, Zhaorong [Key Laboratory of Materials Physics, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031 (China); Li, Lin [Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, P.O. Box 510119, 01314 Dresden (Germany); Department of Physics and Electronics, School of Science, Beijing University of Chemical Technology, Beijing 100029 (China); Shalimov, Artem; Prucnal, Slawomir; Munnik, Frans; Skorupa, Wolfgang; Zhou, Shengqiang, E-mail: s.zhou@hzdr.de [Helmholtz-Zentrum Dresden-Rossendorf, Institute of Ion Beam Physics and Materials Research, P.O. Box 510119, 01314 Dresden (Germany); Tong, Wei [High Magnetic Field Laboratory, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031 (China)

2014-05-07T23:59:59.000Z

286

Environmental Baseline File: National Transportation  

SciTech Connect (OSTI)

This Environmental Baseline File summarizes and consolidates information related to the national-level transportation of commercial spent nuclear fuel. Topics address include: shipmnents of commercial spent nuclear fuel based on mostly truck and mostly rail shipping scenarios; transportation routing for commercial spent nuclear fuel sites and DOE sites; radionuclide inventories for various shipping container capacities; transportation routing; populations along transportation routes; urbanized area population densities; the impacts of historical, reasonably foreseeable, and general transportation; state-level food transfer factors; Federal Guidance Report No. 11 and 12 radionuclide dose conversion factors; and national average atmospheric conditions.

NONE

1999-05-22T23:59:59.000Z

287

Transportation Analysis, Modeling, and Simulation (TAMS) Application  

E-Print Network [OSTI]

Transportation Analysis, Modeling, and Simulation (TAMS) Application Center for Transportation Passenger Flows Supply Chain Efficiency Transportation: Energy Environment Safety Security Vehicle Technologies T he Center for Transportation Analysis (CTA) TAMS application is a web-based tool that supports

288

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES  

E-Print Network [OSTI]

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES DEPARTMENT OF CIVIL & ENVIRONMENTAL Transportation System Performance Report December 27, 2005 #12;2Second Annual Portland Metropolitan Region Transportation System Performance Report Portland State University Center for Transportation Studies 2005

Bertini, Robert L.

289

Nanoparticle growth and transport mechanisms in capacitively coupled silane discharges: a numerical investigation  

SciTech Connect (OSTI)

A self-consistent 1D fluid model is used to investigate the formation, growth and transport mechanisms of sub-micrometer particles in a low pressure capacitively coupled radio-frequency silane (SiH4) discharge. In this contribution we analyze the competition between the different forces governing the transport of nanometer-sized particles and the specific role of the thermophoretic force arising from a thermal gradient in gas temperature induced by heating or cooling of the electrodes. Further growth of the nanoparticles due to coagulation is also described by coupling the 1D fluid model with an aerosol dynamics model.

Bleecker, K. de; Bogaerts, A. [PLASMANT, Dept. of Chemistry, University of Antwerp (Ukraine), Universiteitsplein 1, 2610 Wilrijk (Belgium); Goedheer, W.J. [FOM Institute for Plasma Physics 'Rijnhuizen', Association EURATOM-FOM, Trilateral Euregio Cluster, P.O. Box 1207, 3430 BE Nieuwegein (Netherlands)

2005-10-31T23:59:59.000Z

290

Method for the hydrogenation of poly-si  

DOE Patents [OSTI]

A method for hydrogenating poly-si. Poly-si is placed into the interior of a chamber. A filament is placed into the interior of a chamber. The base pressure of the interior of the chamber is evacuated, preferably to 10.sup.-6 Torr or less. The poly-si is heated for a predetermined poly-si heating time. The filament is heated by providing an electrical power to the filament. Hydrogen is supplied into the pressurized interior of the chamber comprising the heated poly-si and the heated filament. Atomic hydrogen is produced by the filament at a rate whereby the atomic hydrogen surface density at the poly-si is less than the poly-si surface density. Preferably, the poly-si is covered from the atomic hydrogen produced by the heated filament for a first predetermined covering time. Preferably, the poly-si is then uncovered from the atomic hydrogen produced by the heated filament for a first hydrogenation time.

Wang, Qi

2013-11-12T23:59:59.000Z

291

Manufacturing Metrology for c-Si Module Reliability/Durabiltiy  

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

Manufacturing Metrology for c-Si Module ReliabilityDurability Marianne P. Rodgers Marianne P. Rodgers Ashwani Kaul Kristopher O. Davis Neelkanth G. Dhere Hubert...

292

SiC Power MOSFET with Improved Gate Dielectric  

SciTech Connect (OSTI)

In this STTR program, Structured Materials Industries (SMI), and Cornell University are developing novel gate oxide technology, as a critical enabler for silicon carbide (SiC) devices. SiC is a wide bandgap semiconductor material, with many unique properties. SiC devices are ideally suited for high-power, highvoltage, high-frequency, high-temperature and radiation resistant applications. The DOE has expressed interest in developing SiC devices for use in extreme environments, in high energy physics applications and in power generation. The development of transistors based on the Metal Oxide Semiconductor Field Effect Transistor (MOSFET) structure will be critical to these applications.

Sbrockey, Nick M; Tompa, Gary S; Spencer, Michael G; Chandrashekhar, Chandra MVS

2010-08-23T23:59:59.000Z

293

Synthesis and Characterization of Structured Si-Carbon Nanocomposite...  

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

Si-Carbon Nanocomposite Anodes and Functional Polymer Binders Vehicle Technologies Office Merit Review 2014: High Energy, Long Cycle Life Lithium-ion Batteries for EV Applications...

294

al sio2 si: Topics by E-print Network  

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

de Extensin Universitaria Red Metropolitana Red Vsquez, Carlos 497 Graeber et al. 2014 1 Supporting Information (SI Appendix) Biology and Medicine Websites...

295

HD Applications of Significantly Downsized SI Engines Using Alcohol...  

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

SI Engines Using Alcohol DI for Knock Avoidance Direct injection of a second fuel (ethanol or methanol) is explored as a means of avoiding knock in turbocharged,...

296

ADVANCED CUTTINGS TRANSPORT STUDY  

SciTech Connect (OSTI)

The Advanced Cuttings Transport Study (ACTS) was a 5-year JIP project undertaken at the University of Tulsa (TU). The project was sponsored by the U.S. Department of Energy (DOE) and JIP member companies. The objectives of the project were: (1) to develop and construct a new research facility that would allow three-phase (gas, liquid and cuttings) flow experiments under ambient and EPET (elevated pressure and temperature) conditions, and at different angle of inclinations and drill pipe rotation speeds; (2) to conduct experiments and develop a data base for the industry and academia; and (3) to develop mechanistic models for optimization of drilling hydraulics and cuttings transport. This project consisted of research studies, flow loop construction and instrumentation development. Following a one-year period for basic flow loop construction, a proposal was submitted by TU to the DOE for a five-year project that was organized in such a manner as to provide a logical progression of research experiments as well as additions to the basic flow loop. The flow loop additions and improvements included: (1) elevated temperature capability; (2) two-phase (gas and liquid, foam etc.) capability; (3) cuttings injection and removal system; (4) drill pipe rotation system; and (5) drilling section elevation system. In parallel with the flow loop construction, hydraulics and cuttings transport studies were preformed using drilling foams and aerated muds. In addition, hydraulics and rheology of synthetic drilling fluids were investigated. The studies were performed under ambient and EPET conditions. The effects of temperature and pressure on the hydraulics and cuttings transport were investigated. Mechanistic models were developed to predict frictional pressure loss and cuttings transport in horizontal and near-horizontal configurations. Model predictions were compared with the measured data. Predominantly, model predictions show satisfactory agreements with the measured data. As a part of this project, instrumentation was developed to monitor cuttings beds and characterize foams in the flow loop. An ultrasonic-based monitoring system was developed to measure cuttings bed thickness in the flow loop. Data acquisition software controls the system and processes the data. Two foam generating devices were designed and developed to produce foams with specified quality and texture. The devices are equipped with a bubble recognition system and an in-line viscometer to measure bubble size distribution and foam rheology, respectively. The 5-year project is completed. Future research activities will be under the umbrella of Tulsa University Drilling Research Projects. Currently the flow loop is being used for testing cuttings transport capacity of aqueous and polymer-based foams under elevated pressure and temperature conditions. Subsequently, the effect of viscous sweeps on cuttings transport under elevated pressure and temperature conditions will be investigated using the flow loop. Other projects will follow now that the ''steady state'' phase of the project has been achieved.

Stefan Miska; Troy Reed; Ergun Kuru

2004-09-30T23:59:59.000Z

297

Sponge-like Si-SiO{sub 2} nanocomposite—Morphology studies of spinodally decomposed silicon-rich oxide  

SciTech Connect (OSTI)

Sponge-like Si nanostructures embedded in SiO{sub 2} were fabricated by spinodal decomposition of sputter-deposited silicon-rich oxide with a stoichiometry close to that of silicon monoxide. After thermal treatment a mean feature size of about 3 nm was found in the phase-separated structure. The structure of the Si-SiO{sub 2} nanocomposite was investigated by energy-filtered transmission electron microscopy (EFTEM), EFTEM tomography, and atom probe tomography, which revealed a percolated Si morphology. It was shown that the percolation of the Si network in 3D can also be proven on the basis of 2D EFTEM images by comparison with 3D kinetic Monte Carlo simulations.

Friedrich, D.; Schmidt, B.; Heinig, K. H.; Liedke, B.; Mücklich, A.; Hübner, R. [Helmholtz-Zentrum Dresden – Rossendorf, Bautzner Landstr. 400, 01328 Dresden (Germany)] [Helmholtz-Zentrum Dresden – Rossendorf, Bautzner Landstr. 400, 01328 Dresden (Germany); Wolf, D. [Triebenberg Laboratory, Institute of Structure Physics, Technische Universität Dresden, 01062 Dresden (Germany)] [Triebenberg Laboratory, Institute of Structure Physics, Technische Universität Dresden, 01062 Dresden (Germany); Kölling, S. [Fraunhofer Center Nanoelectronic Technologies, Königsbrücker Str. 180, 01099 Dresden (Germany)] [Fraunhofer Center Nanoelectronic Technologies, Königsbrücker Str. 180, 01099 Dresden (Germany); Mikolajick, T. [NaMLab GmbH, Nöthnitzer Str. 64, 01187 Dresden (Germany) [NaMLab GmbH, Nöthnitzer Str. 64, 01187 Dresden (Germany); Technische Universität Dresden, Nöthnitzer Str. 64, 01187 Dresden (Germany)

2013-09-23T23:59:59.000Z

298

Structural, dynamic, and vibrational properties during heat transfer in Si/Ge superlattices: A Car-Parrinello molecular dynamics study  

SciTech Connect (OSTI)

The structural, dynamic, and vibrational properties during heat transfer process in Si/Ge superlattices are studied by analyzing the trajectories generated by the ab initio Car-Parrinello molecular dynamics simulation. The radial distribution functions and mean square displacements are calculated and further discussions are made to explain and probe the structural changes relating to the heat transfer phenomenon. Furthermore, the vibrational density of states of the two layers (Si/Ge) are computed and plotted to analyze the contributions of phonons with different frequencies to the heat conduction. Coherent heat conduction of the low frequency phonons is found and their contributions to facilitate heat transfer are confirmed. The Car-Parrinello molecular dynamics simulation outputs in the work show reasonable thermophysical results of the thermal energy transport process and shed light on the potential applications of treating the heat transfer in the superlattices of semiconductor materials from a quantum mechanical molecular dynamics simulation perspective.

Ji, Pengfei; Zhang, Yuwen, E-mail: zhangyu@missouri.edu [Department of Mechanical and Aerospace Engineering, University of Missouri, Columbia, Missouri 65211 (United States); Yang, Mo [College of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093 (China)

2013-12-21T23:59:59.000Z

299

Transportation and Stationary Power Integration: Workshop Proceedings...  

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

Integration: Workshop Proceedings Transportation and Stationary Power Integration: Workshop Proceedings Proceedings for the Transportation and Stationary Power Integration Workshop...

300

Advanced Vehicle Electrification & Transportation Sector Electrificati...  

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

& Transportation Sector Electrification Advanced Vehicle Electrification & Transportation Sector Electrification 2011 DOE Hydrogen and Fuel Cells Program, and Vehicle Technologies...

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301

Sustainable Transportation Program | Clean Energy | ORNL  

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

Program SHARE Sustainable Transportation Program Oak Ridge National Laboratory's Sustainable Transportation Program Office administratively facilitates the integration of...

302

Enhancing Railroad Hazardous Materials Transportation Safety...  

Office of Environmental Management (EM)

Enhancing Railroad Hazardous Materials Transportation Safety Rail Routing Enhancing Railroad Hazardous Materials Transportation Safety Rail Routing Presentation made by Kevin...

303

Nanocrystalline SiC and Ti3SiC2 Alloys for Reactor Materials: Diffusion of Fission Product Surrogates  

SciTech Connect (OSTI)

MAX phases, such as titanium silicon carbide (Ti3SiC2), have a unique combination of both metallic and ceramic properties, which make them attractive for potential nuclear applications. Ti3SiC2 has been suggested in the literature as a possible fuel cladding material. Prior to the application, it is necessary to investigate diffusivities of fission products in the ternary compound at elevated temperatures. This study attempts to obtain relevant data and make an initial assessment for Ti3SiC2. Ion implantation was used to introduce fission product surrogates (Ag and Cs) and a noble metal (Au) in Ti3SiC2, SiC, and a dual-phase nanocomposite of Ti3SiC2/SiC synthesized at PNNL. Thermal annealing and in-situ Rutherford backscattering spectrometry (RBS) were employed to study the diffusivity of the various implanted species in the materials. In-situ RBS study of Ti3SiC2 implanted with Au ions at various temperatures was also performed. The experimental results indicate that the implanted Ag in SiC is immobile up to the highest temperature (1273 K) applied in this study; in contrast, significant out-diffusion of both Ag and Au in MAX phase Ti3SiC2 occurs during ion implantation at 873 K. Cs in Ti3SiC2 is found to diffuse during post-irradiation annealing at 973 K, and noticeable Cs release from the sample is observed. This study may suggest caution in using Ti3SiC2 as a fuel cladding material for advanced nuclear reactors operating at very high temperatures. Further studies of the related materials are recommended.

Henager, Charles H.; Jiang, Weilin

2014-11-01T23:59:59.000Z

304

Nanocrystalline SiC and Ti3SiC2 Alloys for Reactor Materials: Thermal and Mechanical Properties  

SciTech Connect (OSTI)

SiC-polymers (pure polycarbosilane and polycarbosilane filled with SiC-particles) are being combined with Si and TiC powders to create a new class of polymer-derived ceramics for consideration as advanced nuclear materials in a variety of applications. Compared to pure SiC these materials have increased fracture toughness with only slightly reduced thermal conductivity. Future work with carbon nanotube (CNT) mats will be introduced with the potential to increase the thermal conductivity and the fracture toughness. At present, this report documents the fabrication of a new class of monolithic polymer derived ceramics, SiC + SiC/Ti3SiC2 dual phase materials. The fracture toughness of the dual phase material was measured to be significantly greater than Hexoloy SiC using indentation fracture toughness testing. However, thermal conductivity of the dual phase material was reduced compared to Hexoloy SiC, but was still appreciable, with conductivities in the range of 40 to 60 W/(m K). This report includes synthesis details, optical and scanning electron microscopy images, compositional data, fracture toughness, and thermal conductivity data.

Henager, Charles H.; Alvine, Kyle J.; Roosendaal, Timothy J.; Shin, Yongsoon; Nguyen, Ba Nghiep; Borlaug, Brennan A.; Jiang, Weilin

2014-04-01T23:59:59.000Z

305

Ceramic Technology Project database: September 1990 summary report. [SiC, SiN, whisker-reinforced SiN, ZrO-toughened aluminas, zirconias, joints  

SciTech Connect (OSTI)

Data generated within the Ceramic Technology Project (CTP) represent a valuable resource for both research and industry. The CTP database was created to provide easy access to this information in electronic and hardcopy forms by using a computerized database and by issuing periodic hardcopy reports on the database contents. This report is the sixth in a series of semiannual database summaries and covers recent additions to the database, including joined brazed specimen test data. It covers 1 SiC, 34 SiN, 10 whisker-reinforced SiN, 2 zirconia-toughened aluminas, 8 zirconias, and 34 joints.

Keyes, B.L.P.

1992-06-01T23:59:59.000Z

306

ADVANCED CUTTINGS TRANSPORT STUDY  

SciTech Connect (OSTI)

The Quarter began with installing the new drill pipe, hooking up the new hydraulic power unit, completing the pipe rotation system (Task 4 has been completed), and making the SWACO choke operational. Detailed design and procurement work is proceeding on a system to elevate the drill-string section. The prototype Foam Generator Cell has been completed by Temco and delivered. Work is currently underway to calibrate the system. Literature review and preliminary model development for cuttings transportation with polymer foam under EPET conditions are in progress. Preparations for preliminary cuttings transport experiments with polymer foam have been completed. Two nuclear densitometers were re-calibrated. Drill pipe rotation system was tested up to 250 RPM. Water flow tests were conducted while rotating the drill pipe up to 100 RPM. The accuracy of weight measurements for cuttings in the annulus was evaluated. Additional modifications of the cuttings collection system are being considered in order to obtain the desired accurate measurement of cuttings weight in the annular test section. Cutting transport experiments with aerated fluids are being conducted at EPET, and analyses of the collected data are in progress. The printed circuit board is functioning with acceptable noise level to measure cuttings concentration at static condition using ultrasonic method. We were able to conduct several tests using a standard low pass filter to eliminate high frequency noise. We tested to verify that we can distinguish between different depths of sand in a static bed of sand. We tested with water, air and a mix of the two mediums. Major modifications to the DTF have almost been completed. A stop-flow cell is being designed for the DTF, the ACTF and Foam Generator/Viscometer which will allow us to capture bubble images without the need for ultra fast shutter speeds or microsecond flash system.

Stefan Miska; Nicholas Takach; Kaveh Ashenayi; Mengjiao Yu; Ramadan Ahmed; Mark Pickell; Len Volk; Lei Zhou; Zhu Chen; Aimee Washington; Crystal Redden

2003-09-30T23:59:59.000Z

307

Transportation | Argonne National Laboratory  

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 ConchasPassiveSubmittedStatusButlerTransportation From modeling and simulation programs to

308

Transportation | 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 revisionEnvReviewNonInvasiveExplorationUT-gTaguspark JumpDetective:Toyo Aluminium KKCapitalTransportToolkitreturn

309

NREL: Sustainable NREL - Transportation  

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 and Resources NREL resourceEnergyTransportation Photo of a

310

Transportation Storage Interface  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomen Owned SmallOf The 2012 Greenbuy3 Archive Transportation Fact ofAT THE U.S.of

311

The novel usage of spectroscopic ellipsometry for the development of amorphous Si solar cells  

E-Print Network [OSTI]

May 2010 Keywords: a-Si:H Thin film Si solar cell Spectroscopic ellipsometry (SE) a b s t r a c t We analyzed with relation to structural and electrical properties of a-Si:H thin film for solar cell and faster methodology to develop a-Si:H thin film for thin film Si solar cells using SE measurements

Park, Byungwoo

312

Western Australian Hub of SiMERR Australia (National Centre of Science, ICT and  

E-Print Network [OSTI]

SiMERR WA Western Australian Hub of SiMERR Australia (National Centre of Science, ICT and Mathematics Education for Rural and Regional Australia) Background Since 2005 SiMERR WA, the Western Australian Hub of SiMERR Australia, has been led by a team of academics from Curtin University. Si

313

Flex Fuel Optimized SI and HCCI Engine  

SciTech Connect (OSTI)

The central objective of the proposed work is to demonstrate an HCCI (homogeneous charge compression ignition) capable SI (spark ignited) engine that is capable of fast and smooth mode transition between SI and HCCI combustion modes. The model-based control technique was used to develop and validate the proposed control strategy for the fast and smooth combustion mode transition based upon the developed control-oriented engine; and an HCCI capable SI engine was designed and constructed using production ready two-step valve-train with electrical variable valve timing actuating system. Finally, smooth combustion mode transition was demonstrated on a metal engine within eight engine cycles. The Chrysler turbocharged 2.0L I4 direct injection engine was selected as the base engine for the project and the engine was modified to fit the two-step valve with electrical variable valve timing actuating system. To develop the model-based control strategy for stable HCCI combustion and smooth combustion mode transition between SI and HCCI combustion, a control-oriented real-time engine model was developed and implemented into the MSU HIL (hardware-in-the-loop) simulation environment. The developed model was used to study the engine actuating system requirement for the smooth and fast combustion mode transition and to develop the proposed mode transition control strategy. Finally, a single cylinder optical engine was designed and fabricated for studying the HCCI combustion characteristics. Optical engine combustion tests were conducted in both SI and HCCI combustion modes and the test results were used to calibrate the developed control-oriented engine model. Intensive GT-Power simulations were conducted to determine the optimal valve lift (high and low) and the cam phasing range. Delphi was selected to be the supplier for the two-step valve-train and Denso to be the electrical variable valve timing system supplier. A test bench was constructed to develop control strategies for the electrical variable valve timing (VVT) actuating system and satisfactory electrical VVT responses were obtained. Target engine control system was designed and fabricated at MSU for both single-cylinder optical and multi-cylinder metal engines. Finally, the developed control-oriented engine model was successfully implemented into the HIL simulation environment. The Chrysler 2.0L I4 DI engine was modified to fit the two-step vale with electrical variable valve timing actuating system. A used prototype engine was used as the base engine and the cylinder head was modified for the two-step valve with electrical VVT actuating system. Engine validation tests indicated that cylinder #3 has very high blow-by and it cannot be reduced with new pistons and rings. Due to the time constraint, it was decided to convert the four-cylinder engine into a single cylinder engine by blocking both intake and exhaust ports of the unused cylinders. The model-based combustion mode transition control algorithm was developed in the MSU HIL simulation environment and the Simulink based control strategy was implemented into the target engine controller. With both single-cylinder metal engine and control strategy ready, stable HCCI combustion was achived with COV of 2.1% Motoring tests were conducted to validate the actuator transient operations including valve lift, electrical variable valve timing, electronic throttle, multiple spark and injection controls. After the actuator operations were confirmed, 15-cycle smooth combustion mode transition from SI to HCCI combustion was achieved; and fast 8-cycle smooth combustion mode transition followed. With a fast electrical variable valve timing actuator, the number of engine cycles required for mode transition can be reduced down to five. It was also found that the combustion mode transition is sensitive to the charge air and engine coolant temperatures and regulating the corresponding temperatures to the target levels during the combustion mode transition is the key for a smooth combustion mode transition. As a summary, the proposed combust

Zhu, Guoming; Schock, Harold; Yang, Xiaojian; Huisjen, Andrew; Stuecken, Tom; Moran, Kevin; Zhen, Ron; Zhang, Shupeng

2013-09-30T23:59:59.000Z

314

Processing and Oxidation Behavior of Nb-Si-B Intermetallics  

SciTech Connect (OSTI)

Single phase materials of {alpha}-Nb{sub 5}Si{sub 3}, Nb{sub 5}(Si,B){sub 3} (T2) and Nb{sub 5}Si{sub 3}B{sub x} (D8{sub 8}) in the Nb-Si-B system were prepared by powder metallurgy processing. T2 was almost fully dense, while {alpha}-Nb{sub 5}Si{sub 3} and D8{sub 8} were porous after sintering at 1900 C for 2 hours. The lattice parameters of T2 decreased linearly with the substitution of B for Si. Isothermal oxidation testing at 1000 C in flowing air indicated that the oxidation resistances of T2 and D8{sub 8} are much better than {alpha}-Nb{sub 5}Si{sub 3}, but still extremely poor compared to the boron-modified Mo{sub 5}Si{sub 3}. Extensive cracking in the oxide scale and matrix were observed and arose from the volume expansion associated with the formation of Nb{sub 2}O{sub 5} and boron-containing silica glass.

Y.LIU; A.J. Thom; M.J. Kramer; M. Akinc

2004-09-30T23:59:59.000Z

315

Magnetic Properties of Single-Crystalline CoSi Nanowires  

E-Print Network [OSTI]

CoxSi alloys showed possible use of metal silicides in the future Si-based spintronics technology.3,10 Because metal silicide NWs can be used as interconnects in integrated circuits and they are compatible with the processing of complementary metal-oxide-semiconductor (CMOS) de- vices,11 synthesis of metal silicide NWs

Kim, Bongsoo

316

Hafnium silicide formation on Si(100) upon annealing  

SciTech Connect (OSTI)

High dielectric constant materials, such as HfO{sub 2}, have been extensively studied as alternatives to SiO{sub 2} in new generations of Si based devices. Hf silicate/silicide formation has been reported in almost all literature studies of Hf based oxides on Si, using different methods of preparation. A silicate interface resembles close to the traditional Si/SiO{sub 2}. The silicate very likely forms a very sharp interface between the Si substrate and the metal oxide, and would be suitable for device applications. However, the thermal instability of the interfacial silicate/oxide film leads to silicidation, causing a dramatic loss of the gate oxide integrity. Despite the importance of the Hf silicide surface and interface with Si, only a few studies of this surface are present in the literature, and a structural determination of the surface has not been reported. This paper reports a study of the Hf silicide formation upon annealing by using a combination of XPS, LEED, and x-ray photoelectron diffraction (XPD) analyses. Our results clearly indicate the formation of a unique ordered Hf silicide phase (HfSi{sub 2}), which starts to crystallize when the annealing temperature is higher than 550 deg. C.

Siervo, A. de [Experimentelle Physik 1, Universitaet Dortmund, Otto-Hahn-Str. 4, D 44221 Dortmund (Germany); Laboratorio Nacional de Luz Sincrotron, Caixa Postal 6192, 13084-971, Campinas, Sao Paulo (Brazil); Fluechter, C. R.; Weier, D.; Schuermann, M.; Dreiner, S.; Westphal, C. [Experimentelle Physik 1, Universitaet Dortmund, Otto-Hahn-Str. 4, D 44221 Dortmund (Germany); Carazzolle, M. F.; Pancotti, A.; Landers, R.; Kleiman, G. G. [Instituto de Fisica 'Gleb Wataghin', Universidade Estadual de Campinas, Caixa Postal 6165, 13083-970, Campinas, Sao Paulo (Brazil)

2006-08-15T23:59:59.000Z

317

SiGeCSi superlattice microcoolers Xiaofeng Fan,a)  

E-Print Network [OSTI]

stabilization of microelectronic and optoelectronic devices. SiGeC can be lattice matched to Si and optoelectronic devices, but their pro- cessing is a bulk technology and is incompatible with inte- grated circuit fabrication process. Solid-state coolers mono- lithically integrated with microelectronic and optoelectronic

318

Astrophysically important {sup 26}Si states studied with the {sup 28}Si(p,t){sup 26}Si reaction. II. Spin of the 5.914-MeV {sup 26}Si level and galactic {sup 26}Al production  

SciTech Connect (OSTI)

The {sup 28}Si(p,t){sup 26}Si reaction has been studied to resolve a controversy surrounding the properties of the {sup 26}Si level at 5.914 MeV and its contribution to the {sup 25}Al(p,{gamma}){sup 26}Si reaction rate in novae, which affects interpretations of galactic {sup 26}Al observations. Recent studies have come to contradictory conclusions regarding the spin of this level (0{sup +} or 3{sup +}), with a 3{sup +} assignment implying a large contribution by this level to the {sup 25}Al(p,{gamma}){sup 26}Si reaction rate. We have extended our previous study [Bardayan et al., Phys. Rev. C 65, 032801(R) (2002)] to smaller angles and find the angular distribution of tritons populating the 5.914-MeV level in the {sup 28}Si(p,t){sup 26}Si reaction to be consistent with either a 2{sup +} or 3{sup +} assignment. We have calculated reaction rates under these assumptions and used them in a nova nucleosynthesis model to examine the effects of the remaining uncertainties in the {sup 25}Al(p,{gamma}){sup 26}Si rate on {sup 26}Al production in novae.

Bardayan, D. W.; Blackmon, J. C.; Hix, W. R.; Liang, J. F.; Smith, M. S. [Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Howard, J. A.; Kozub, R. L. [Physics Department, Tennessee Technological University, Cookeville, Tennessee 38505 (United States); Brune, C. R. [Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701 (United States); Chae, K. Y. [Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States); Johnson, M. S. [Oak Ridge Associated Universities, Bldg 6008, P. O. Box 2008, Oak Ridge, Tennessee 37831 (United States); Jones, K. L.; Pain, S. D.; Thomas, J. S. [Department of Physics and Astronomy, Rutgers University, Piscataway, New Jersey 08854 (United States); Lingerfelt, E. J.; Scott, J. P. [Physics Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Department of Physics and Astronomy, University of Tennessee, Knoxville, Tennessee 37996 (United States); Livesay, R. J. [Department of Physics, Colorado School of Mines, Golden, Colorado 80401 (United States); Visser, D. W. [Department of Physics and Astronomy, University of North Carolina, Chapel Hill, North Carolina 27599 (United States)

2006-10-15T23:59:59.000Z

319

The role of lattice excitation in Si etching  

E-Print Network [OSTI]

The chemistries of fluorine, F?, and xenon difluoride, XeF?, with clean Si are basically the same, while their chemistries diverge dramatically past I ML F coverage. With a clean Si surface, F? and XeF? react utilizing an ...

Blair, Michael Ryan

2014-01-01T23:59:59.000Z

320

Point Defect Configurations of Supersaturated Au Atoms Inside Si  

E-Print Network [OSTI]

, Dhananjay Kumar,, Sokrates T. Pantelides,,# and Stephen J. Pennycook,# Materials Science and Technology Di, Spain, Max Planck Institute of Microstructure Physics, Weinberg 2, 06120 Halle, Germany, and Department of stable silicides in the Au-Si phase diagram suggests growth of clean Si nanowires might be possible

Pennycook, Steve

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Transportation Statistics Annual Report 1997  

SciTech Connect (OSTI)

This document is the fourth Transportation Statistics Annual Report (TSAR) prepared by the Bureau of Transportation Statistics (BTS) for the President and Congress. As in previous years, it reports on the state of U.S. transportation system at two levels. First, in Part I, it provides a statistical and interpretive survey of the system—its physical characteristics, its economic attributes, aspects of its use and performance, and the scale and severity of unintended consequences of transportation, such as fatalities and injuries, oil import dependency, and environment impacts. Part I also explores the state of transportation statistics, and new needs of the rapidly changing world of transportation. Second, Part II of the report, as in prior years, explores in detail the performance of the U.S. transportation system from the perspective of desired social outcomes or strategic goals. This year, the performance aspect of transportation chosen for thematic treatment is “Mobility and Access,” which complements past TSAR theme sections on “The Economic Performance of Transportation” (1995) and “Transportation and the Environment” (1996). Mobility and access are at the heart of the transportation system’s performance from the user’s perspective. In what ways and to what extent does the geographic freedom provided by transportation enhance personal fulfillment of the nation’s residents and contribute to economic advancement of people and businesses? This broad question underlies many of the topics examined in Part II: What is the current level of personal mobility in the United States, and how does it vary by sex, age, income level, urban or rural location, and over time? What factors explain variations? Has transportation helped improve people’s access to work, shopping, recreational facilities, and medical services, and in what ways and in what locations? How have barriers, such as age, disabilities, or lack of an automobile, affected these accessibility patterns? How are commodity flows and transportation services responding to global competition, deregulation, economic restructuring, and new information technologies? How do U.S. patterns of personal mobility and freight movement compare with other advanced industrialized countries, formerly centrally planned economies, and major newly industrializing countries? Finally, how is the rapid adoption of new information technologies influencing the patterns of transportation demand and the supply of new transportation services? Indeed, how are information technologies affecting the nature and organization of transportation services used by individuals and firms?

Fenn, M.

1997-01-01T23:59:59.000Z

322

Electronic structures of GeSi nanoislands grown on pit-patterned Si(001) substrate  

SciTech Connect (OSTI)

Patterning pit on Si(001) substrate prior to Ge deposition is an important approach to achieve GeSi nanoislands with high ordering and size uniformity. In present work, the electronic structures of realistic uncapped pyramid, dome, barn and cupola nanoislands grown in (105) pits are systematically investigated by solving Schrödinger equation for heavy-hole, which resorts to inhomogeneous strain distribution and nonlinear composition-dependent band parameters. Uniform, partitioned and equilibrium composition profile (CP) in nanoisland and inverted pyramid structure are simulated separately. We demonstrate the huge impact of composition profile on localization of heavy-hole: wave function of ground state is confined near pit facets for uniform CP, at bottom of nanoisland for partitioned CP and at top of nanoisland for equilibrium CP. Moreover, such localization is gradually compromised by the size effect as pit filling ratio or pit size decreases. The results pave the fundamental guideline of designing nanoislands on pit-patterned substrates for desired applications.

Ye, Han, E-mail: Dabombyh@aliyun.com; Yu, Zhongyuan [State Key Laboratory of Information Photonics and Optical Communications, Beijing University of Posts and Telecommunications, Beijing 100876, P.R.China (China)

2014-11-15T23:59:59.000Z

323

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

This is the third quarterly report on oxygen Transport Ceramic Membranes. In the following, the report describes the progress made by our university partners in Tasks 1 through 6, experimental apparatus that was designed and built for various tasks of this project, thermodynamic calculations, where applicable and work planned for the future. (Task 1) Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints. (Task 2) Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability. (Task 3) Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres. (Task 4) Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures. (Task 5) Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability. (Task 6) Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2000-10-01T23:59:59.000Z

324

Streamlining Transportation Corridor Planning Processess: Freight and Traffic Information  

SciTech Connect (OSTI)

The traffic investigation is one of the most important parts of an Environmental Impact Statement of projects involving the construction of new roadway facilities and/or the improvement of existing ones. The focus of the traffic analysis is on the determination of anticipated traffic flow characteristics of the proposed project, by the application of analytical methods that can be grouped under the umbrella of capacity analysis methodologies. In general, the main traffic parameter used in EISs to describe the quality of traffic flow is the Level of Service (LOS). The current state of the practice in terms of the traffic investigations for EISs has two main shortcomings. The first one is related to the information that is necessary to conduct the traffic analysis, and specifically to the lack of integration among the different transportation models and the sources of information that, in general, reside in GIS databases. A discussion of the benefits of integrating CRS&SI technologies and the transportation models used in the EIS traffic investigation is included. The second shortcoming is in the presentation of the results, both in terms of the appearance and formatting, as well as content. The presentation of traffic results (current and proposed) is discussed. This chapter also addresses the need of additional data, in terms of content and coverage. Regarding the former, other traffic parameters (e.g., delays) that are more meaningful to non-transportation experts than LOS, as well as additional information (e.g., freight flows) that can impact traffic conditions and safety are discussed. Spatial information technologies can decrease the negative effects of, and even eliminate, these shortcomings by making the relevant information that is input to the models more complete and readily available, and by providing the means to communicate the results in a more clear and efficient manner. The benefits that the application and use of CRS&SI technologies can provide to improve and expedite the traffic investigation part of the EIS process are presented.

Franzese, Oscar [ORNL

2010-08-01T23:59:59.000Z

325

Formation and incorporation of SiF{sub 4} molecules in F-implanted preamorphized Si  

SciTech Connect (OSTI)

The local structure of fluorine incorporated in crystalline silicon following solid phase epitaxial regrowth was investigated by means of x-ray absorption spectroscopy at the F K-edge. We clearly demonstrate that most F is found in SiF{sub 4} molecules in the crystalline matrix. A kinetic pathway, which explains our observation and which is also able to rationalize previous results in a common and coherent framework, is proposed.

De Salvador, D.; Bisognin, G.; Napolitani, E.; Mastromatteo, M.; Baggio, N.; Carnera, A. [MATIS INFM-CNR and Department of Physics, Padova University, via Marzolo 8, 35131 Padova (Italy); Boscherini, F. [Department of Physics and CNISM, Bologna University, viale C. Berti Pichat 6/2, 40127 Bologna (Italy); Impellizzeri, G.; Mirabella, S.; Boninelli, S.; Priolo, F. [MATIS INFM-CNR and Department of Physics and Astronomy, Catania University, via S. Sofia 64, 95123 Catania (Italy); Cristiano, F. [LAAS-CNRS, Toulouse University, 7 av. du Colonel Roche, 31077 Toulouse (France)

2009-09-07T23:59:59.000Z

326

Radiation transport in inhomogeneous media  

SciTech Connect (OSTI)

Calculations of radiation transport in heated materials are greatly complicated by the presence of regions in which two or more materials are inhomogeneously mixed. This phenomenon is important in many systems, such as astrophysical systems where density clumps can be found in star-forming regions and molecular clouds. Laboratory experiments have been designed to test the modeling of radiation transport through inhomogeneous plasmas. A laser-heated hohlraum is used as a thermal source to drive radiation through polymer foam containing randomly distributed gold particles. Experimental measurements of radiation transport in foams with gold particle sizes ranging from 5-9 {mu}m to submicrometer diameters as well as the homogeneous foam case are presented. The simulation results of the radiation transport are compared to the experiment and show that an inhomogeneous transport model must be applied to explain radiation transport in foams loaded with 5 {mu}m diameter gold particles.

Keiter, Paul; Gunderson, Mark [Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States); Foster, John; Rosen, Paula; Comley, Andrew; Taylor, Mark [AWE Aldermaston, Reading, RG7 4PR (United Kingdom); Perry, Ted [Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

2008-05-15T23:59:59.000Z

327

Nanoengineered membranes for controlled transport  

DOE Patents [OSTI]

A nanoengineered membrane for controlling material transport (e.g., molecular transport) is disclosed. The membrane includes a substrate, a cover definining a material transport channel between the substrate and the cover, and a plurality of fibers positioned in the channel and connected to an extending away from a surface of the substrate. The fibers are aligned perpendicular to the surface of the substrate, and have a width of 100 nanometers or less. The diffusion limits for material transport are controlled by the separation of the fibers. In one embodiment, chemical derivitization of carbon fibers may be undertaken to further affect the diffusion limits or affect selective permeability or facilitated transport. For example, a coating can be applied to at least a portion of the fibers. In another embodiment, individually addressable carbon nanofibers can be integrated with the membrane to provide an electrical driving force for material transport.

Doktycz, Mitchel J. (Oak Ridge, TN) [Oak Ridge, TN; Simpson, Michael L. (Knoxville, TN) [Knoxville, TN; McKnight, Timothy E. (Greenback, TN) [Greenback, TN; Melechko, Anatoli V. (Oak Ridge, TN) [Oak Ridge, TN; Lowndes, Douglas H. (Knoxville, TN) [Knoxville, TN; Guillorn, Michael A. (Knoxville, TN) [Knoxville, TN; Merkulov, Vladimir I. (Oak Ridge, TN) [Oak Ridge, TN

2010-01-05T23:59:59.000Z

328

Hot metal Si control at Kwangyang blast furnaces  

SciTech Connect (OSTI)

Studies of Si transfer in blast furnaces have shown that the Si level in pig iron is influenced more by the reaction of silicon oxide gas generation in the raceway than the chemical reaction between hot metal and slag at the drop zone. Specifications require a Si content of pig iron below 0.15% at the Kwangyang Works, but the use of soft coking coal in the blend for coke ovens, high pulverized coal injection rate into the blast furnace, and the application of lower grade iron ore has resulted in the need to develop methods to control Si in hot metal. In this paper, the results of in furnace Si control and the desiliconization skills at the casthouse floor are described.

Hur, N.S.; Cho, B.R.; Kim, G.Y.; Choi, J.S.; Kim, B.H. [POSCO, Cheollanamdo (Korea, Republic of). Kwangyang Works

1995-12-01T23:59:59.000Z

329

Metal silicide/poly-Si Schottky diodes for uncooled microbolometers  

E-Print Network [OSTI]

Nickel silicide Schottky diodes formed on polycrystalline Si films are proposed as temperature sensors of monolithic uncooled microbolometer IR focal plane arrays. Structure and composition of nickel silicide/polycrystalline silicon films synthesized in a low-temperature process are examined by transmission electron microscopy. The Ni silicide has been identified as two-phase compound with the volume fraction of Ni_2Si:NiSi>~4:1. Two potential barriers (~0.74 and ~0.51 meV) are registered by photo-emf spectroscopy at 80K and attributed to Ni/Si and Ni-silicide/Si interfaces. I-V characteristics of the diodes studied at different temperatures demonstrate temperature coefficients of voltage and current to vary in absolute value from 0.3 to 0.6%/K for forward biased structures and around 2.5%/K for reverse biased ones.

Chizh, K V; Kalinushkin, V P; Resnik, V Ya; Storozhevykh, M S; Yuryev, V A

2013-01-01T23:59:59.000Z

330

Substitutional B in Si: Accurate lattice parameter determination  

SciTech Connect (OSTI)

In this work the lattice deformation induced by substitutional B in Si is carefully determined by using different experimental techniques. The investigated Si{sub 1-x}B{sub x}/Si layers x=(0.0012 divide 0.005) are grown by solid phase epitaxy of B-implanted preamorphized Si and by molecular beam epitaxy. Nuclear reaction analysis both in random and in channeling geometry, secondary ion mass spectrometry and high resolution x-ray diffraction allow to quantify the total amount of B and its lattice location, the B depth profile and the B-doped Si lattice parameter, respectively. The reasons for the large spread present in the data reported so far in literature are discussed. Our results, thanks to the synergy of the earlier techniques, lead to a significantly more accurate strain determination, that is in agreement with very recent ab initio theoretical calculations.

Bisognin, G.; De Salvador, D.; Napolitani, E.; Berti, M.; Carnera, A.; Mirabella, S.; Romano, L.; Grimaldi, M. G.; Priolo, F. [MATIS CNR-INFM and Dipartimento di Fisica, Universita di Padova, via Marzolo 8, 35131 Padova (Italy); MATIS CNR-INFM and Dipartimento di Fisica ed Astronomia, Universita di Catania, via S. Sofia 64, 95123 Catania (Italy)

2007-05-01T23:59:59.000Z

331

Mechanistic Selection and Growth of Twinned Bicrystalline Primary Si in Near Eutectic Al-Si Alloys  

SciTech Connect (OSTI)

Morphological evolution and selection of angular primary silicon is investigated in near-eutectic Al-Si alloys. Angular silicon arrays are grown directionally in a Bridgman furnace at velocities in the regime of 10{sup -3} m/sec and with a temperature gradient of 7.5 x 10{sup 3} K/m. Under these conditions, the primary Si phase grows as an array of twinned bicrystalline dendrites, where the twinning gives rise to a characteristic 8-pointed star-shaped primary morphology. While this primary Si remains largely faceted at the growth front, a complex structure of coherent symmetric twin boundaries enables various adjustment mechanisms which operate to optimize the characteristic spacings within the primary array. In the work presented here, this primary silicon growth morphology is examined in detail. In particular, this thesis describes the investigation of: (1) morphological selection of the twinned bicrystalline primary starshape morphology; (2) primary array behavior, including the lateral propagation of the starshape grains and the associated evolution of a strong <100> texture; (3) the detailed structure of the 8-pointed star-shaped primary morphology, including the twin boundary configuration within the central core; (4) the mechanisms of lateral propagation and spacing adjustment during array evolution; and (5) the thermosolutal conditions (i.e. operating state) at the primary growth front, including composition and phase fraction in the vicinity of the primary tip.

Choonho Jung

2006-12-12T23:59:59.000Z

332

Scale Up of Si/Si0.8GE0.2 and B4C/B9C Superlattices for Harvesting...  

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

Scale Up of SiSi0.8GE0.2 and B4CB9C Superlattices for Harvesting of Waste Heat in Diesel Engines Scale Up of SiSi0.8GE0.2 and B4CB9C Superlattices for Harvesting of Waste Heat...

333

Low-Temperature, Strong SiO2-SiO2 Covalent Wafer Bonding for IIIV Compound Semiconductors-to-Silicon Photonic  

E-Print Network [OSTI]

required temperature for strong covalent bond for- mation and greater diffusion efficiency of gasLow-Temperature, Strong SiO2-SiO2 Covalent Wafer Bonding for III­V Compound Semiconductors-temperature process for covalent bonding of thermal SiO2 to plasma-enhanced chemical vapor deposited (PECVD) SiO2

Bowers, John

334

Spent fuel integrity during transportation  

SciTech Connect (OSTI)

The conditions of recent shipments of light water reactor spent fuel were surveyed. The radioactivity level of cask coolant was examined in an attempt to find the effects of transportation on LWR fuel assemblies. Discussion included potential cladding integrity loss mechanisms, canning requirements, changes of radioactivity levels, and comparison of transportation in wet or dry media. Although integrity loss or degradation has not been identified, radioactivity levels usually increase during transportation, especially for leaking assemblies.

Funk, C.W.; Jacobson, L.D.

1980-01-01T23:59:59.000Z

335

Electromagnetic dissociation of relativistic [sup 28]Si by nucleon emission  

SciTech Connect (OSTI)

A detailed study of the electromagnetic dissociation of [sup 28]Si by nucleon emission at E[sub lab]/A = 14.6 (GeV/nucleon was carried out with [sup 28]Si beams interacting on [sup 208]Pb). [sup 120]Sn. [sup 64]C targets. The measurements apparatus consists of detectors in the target area which measure the energy and charged multiplicity, and a forward spectrometer which measures the position, momentum and energy of the reaction fragments. The exclusive electromagnetic dissociation cross sections for decay channels having multiple nucleons in the final state have been measured which enables the selection of events produced in pure electromagnetic interactions. The measured cross sections agree well with previous measurements obtained for the removal of a few nucleons as well as with measurements on total charge removal cross sections from other experiments. The dependence of the integrated cross sections on the target charge Z[sub T] and the target mass AT confirms that for higher Z targets the excitation is largely electromagnetic. Direct measurements of the excitation energy for the electromagnetic dissociation of [sup 28]Si [yields] p+[sup 27]Al and [sup 28]Si [yields] n+[sup 27]Si have been obtained through a calculation of the invariant mass in kinematically, reconstructed events. The excitation energy spectrum for all targets peak near the isovector giant dipole resonance in [sup 28]Si. These distributions are well reproduced by combining the photon spectrum calculated using the Weizsaecker-Williams approximation with the experimental data on the photonuclear [sup 28]Si([sub [gamma],p])[sup 27]Al and [sup 28]Si([sub [gamma],n])[sup 27]Si. The possibilities of observing double giant dipole resonance excitations in [sup 28]Si have been investigated with cross section measurements as well as with excitation energy reconstruction.

Sonnadara, U.J.

1992-12-01T23:59:59.000Z

336

Electromagnetic dissociation of relativistic {sup 28}Si by nucleon emission  

SciTech Connect (OSTI)

A detailed study of the electromagnetic dissociation of {sup 28}Si by nucleon emission at E{sub lab}/A = 14.6 (GeV/nucleon was carried out with {sup 28}Si beams interacting on {sup 208}Pb). {sup 120}Sn. {sup 64}C targets. The measurements apparatus consists of detectors in the target area which measure the energy and charged multiplicity, and a forward spectrometer which measures the position, momentum and energy of the reaction fragments. The exclusive electromagnetic dissociation cross sections for decay channels having multiple nucleons in the final state have been measured which enables the selection of events produced in pure electromagnetic interactions. The measured cross sections agree well with previous measurements obtained for the removal of a few nucleons as well as with measurements on total charge removal cross sections from other experiments. The dependence of the integrated cross sections on the target charge Z{sub T} and the target mass AT confirms that for higher Z targets the excitation is largely electromagnetic. Direct measurements of the excitation energy for the electromagnetic dissociation of {sup 28}Si {yields} p+{sup 27}Al and {sup 28}Si {yields} n+{sup 27}Si have been obtained through a calculation of the invariant mass in kinematically, reconstructed events. The excitation energy spectrum for all targets peak near the isovector giant dipole resonance in {sup 28}Si. These distributions are well reproduced by combining the photon spectrum calculated using the Weizsaecker-Williams approximation with the experimental data on the photonuclear {sup 28}Si({sub {gamma},p}){sup 27}Al and {sup 28}Si({sub {gamma},n}){sup 27}Si. The possibilities of observing double giant dipole resonance excitations in {sup 28}Si have been investigated with cross section measurements as well as with excitation energy reconstruction.

Sonnadara, U.J.

1992-12-01T23:59:59.000Z

337

NREL: Transportation Research Home Page  

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

to heavy-duty freight trucks. Female researcher holding coin cell battery. NREL's transportation research spans from the materials to the systems level. Fuel cell electric sports...

338

Transportation External Coordination Working Group:  

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

Lessons Learned Study of DOE FY03 SNF Shipments Judith Holm National Transportation Program Albuquerque, New Mexico April 21, 2004 Background Benchmarking * The goal of...

339

Transportation External Coordination Working Group:  

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

External Coordination Working Group: Background and Process Judith Holm National Transportation Program Albuquerque, New Mexico April 21, 2004 TEC History * DOE's Office of...

340

Hazardous Waste Transporter Permits (Connecticut)  

Broader source: Energy.gov [DOE]

Transportation of hazardous wastes into or through the State of Connecticut requires a permit. Some exceptions apply. The regulations provide information about obtaining permits and other permit...

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

OVERVIEW OF PROPOSED TRANSPORTATION ENERGY  

E-Print Network [OSTI]

...............................................................................10 METHODOLOGY OF LONG-TERM FUEL DEMAND FORECAST ......................... 12 Introduction.................................................................................................................................................12 Purpose of California Petroleum Demand Forecast.......................................................................................................................4 PROPOSED CALIFORNIA TRANSPORTATION FUEL PRICE FORECASTS......... 6 Summary

342

Transport and Induced Elastic Stress  

E-Print Network [OSTI]

Title: Variational Approach in Studying the Mixture of the Fluids: Transport and Induced Elastic Stress Abstract: From the energetic point of view, most ...

343

Transport Properties for Combustion Modeling  

E-Print Network [OSTI]

a critical role in combustion processes just as chemicalparameters are essential for combustion modeling; molecularwith Application to Combustion. Transport Theor Stat 2003;

Brown, N.J.

2010-01-01T23:59:59.000Z

344

Alternative Transportation Technologies: Hydrogen, Biofuels,...  

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

Alternative Transportation Technologies: Hydrogen, Biofuels, Advanced Efficiency, and Plug-in Hybrid Electric Vehicles Results of two Reports from the National Research Council...

345

TRANSPORT AND EMPLACEMENT EQUIPMENT DESCRIPTIONS  

SciTech Connect (OSTI)

The objective and the scope of this document are to list and briefly describe the major mobile equipment necessary for waste package (WP) Transport and Emplacement in the proposed subsurface nuclear waste repository at Yucca Mountain. Primary performance characteristics and some specialized design features of the equipment are explained and summarized in the individual subsections of this document. The Transport and Emplacement equipment described in this document consists of the following: (1) WP Transporter; (2) Reusable Rail Car; (3) Emplacement Gantry; (4) Gantry Carrier; and (5) Transport Locomotive.

NA

1997-09-29T23:59:59.000Z

346

Subsurface Flow and Transport | EMSL  

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

and compare experimental and numerical results to address the nation's most challenging problems in the subsurface related to contaminant transport, carbon cycling, enhanced oil...

347

Size Effect of SiC Particle on Microstructures and Mechanical Properties of SiCp/Al Composites  

E-Print Network [OSTI]

Cp/Al composites were fabricated using aluminum alloy ZL101 as the matrix material, and SiC particles respectively. The results show that the SiC particles can distribute uniformly in the aluminum matrix using matrix or reinforced materials [1-5]. They are promising materials for aerospace, automotive, thermal

Qin, Qinghua

348

SiGe-free strained Si on insulator by wafer bonding and layer transfer T. A. Langdo,a)  

E-Print Network [OSTI]

­8 or Ge condensation during SiGe oxidation.9 In these approaches, the relaxed SGOI layer serves as a ten chemical mechanical polishing step to elimi- nate the surface crosshatch roughness induced by the com a hydrophilic surface preparation treatment, the implanted structure was wafer bonded to an oxidized Si handle

349

More stable hybrid organic solar cells deposited on amorphous Si electron transfer layer  

SciTech Connect (OSTI)

We report on defect densities, performance, and stability of organic/inorganic hybrid solar cells produced using n-doped inorganic amorphous silicon-carbide layers as the electron transport layer (ETL). The organic material was poly-3-hexyl-thiophene (P3HT) and heterojunction was formed using phenyl-C{sub 71}-Butyric-Acid-Methyl Ester (PCBM). For comparison, inverted solar cells fabricated using Cs{sub 2}CO{sub 3} as ETL were fabricated. Defect densities and subgap quantum efficiency curves were found to be nearly identical for both types of cells. The cells were subjected to 2xsun illumination and it was found that the cells produced using doped a-Si as ETL were much more stable than the cells produced using Cs{sub 2}CO{sub 3}.

Samiee, Mehran; Modtland, Brian; Dalal, Vikram L., E-mail: vdalal@iastate.edu [Iowa State University, Dept. of Electrical and Computer Engineering, Ames, Iowa 50011 (United States); Aidarkhanov, Damir [Nazarbayev University, Astana (Kazakhstan)

2014-05-26T23:59:59.000Z

350

Climate and Transportation Solutions: Findings from the 2009 Asilomar Conference on Transportation and Energy Policy  

E-Print Network [OSTI]

Chapter 2 Climate and Transportation Solutions Chapter 3:Gas Emissions in the Transportation Sector by John Conti,Chase, and John Maples Transportation is the single largest

Sperling, Daniel; Cannon, James S.

2010-01-01T23:59:59.000Z

351

Substrate engineering for monolithic integration of III-V semiconductors with Si CMOS technology  

E-Print Network [OSTI]

Ge virtual substrates, fabricated using Si1-xGex-.Ge, compositionally graded buffers, enable the epitaxial growth of device-quality GaAs on Si substrates, but monolithic integration of III-V semiconductors with Si CMOS ...

Dohrman, Carl Lawrence

2008-01-01T23:59:59.000Z

352

Strained Silicon on Silicon by Wafer Bonding and Layer Transfer from Relaxed SiGe Buffer  

E-Print Network [OSTI]

We report the creation of strained silicon on silicon (SSOS) substrate technology. The method uses a relaxed SiGe buffer as a template for inducing tensile strain in a Si layer, which is then bonded to another Si handle ...

Isaacson, David M.

353

a-si solar cells: Topics by E-print Network  

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

for the development of amorphous Si solar cells Seung May 2010 Keywords: a-Si:H Thin film Si solar cell Spectroscopic ellipsometry (SE) a b s t r a c t We Park, Byungwoo...

354

a-si solar cell: Topics by E-print Network  

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

for the development of amorphous Si solar cells Seung May 2010 Keywords: a-Si:H Thin film Si solar cell Spectroscopic ellipsometry (SE) a b s t r a c t We Park, Byungwoo...

355

The origin of strength limiting defects in a toughened SiC (hexology SX-SiC)  

SciTech Connect (OSTI)

HEXOLOY{reg_sign} SX-SiC, sintered with yttrium, and aluminum containing compounds has higher toughness and strength than {alpha}-SiC, sintered with boron and carbon (HEXOLOY SA-SiC). The room temperature fracture toughness, and strength in uniaxial tension and flexure were determined. The strength limiting defects were identified. The composition of the strength limiting defects were analyzed by elemental mapping with Scanning Auger Electron Microscopy and Secondary Ion Mass Spectrometry. The origination of such defects are discussed. The fracture mirror parameter was determined from analysis of tensile specimens fracture surfaces. The experimentally determined fracture mirror parameter is compared with the predicted value for SX-SiC and {alpha}-SiC. The local stress state at the vicinity of the defects are discussed.

Srinivasan, G.V.; Gibson, J.; Lau, S.K. [Carborundum Company, Niagara Falls, NY (United States)] [and others

1996-12-31T23:59:59.000Z

356

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

In the present quarter, oxygen transport perovskite ceramic membranes are evaluated for strength and fracture in oxygen gradient conditions. Oxygen gradients are created in tubular membranes by insulating the inner surface from the reducing environment by platinum foils. Fracture in these test conditions is observed to have a gradient in trans and inter-granular fracture as opposed to pure trans-granular fracture observed in homogeneous conditions. Fracture gradients are reasoned to be due to oxygen gradient set up in the membrane, variation in stoichiometry across the thickness and due to varying decomposition of the parent perovskite. The studies are useful in predicting fracture criterion in actual reactor conditions and in understanding the initial evolution of fracture processes.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2002-07-01T23:59:59.000Z

357

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

This report covers the following tasks: Task 1--Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints; Task 2--Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability; Task 3--Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres; Task 4--Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures; Task 5--Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability; and Task 6--Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2002-04-01T23:59:59.000Z

358

Hydrogen transport membranes  

DOE Patents [OSTI]

Composite hydrogen transport membranes, which are used for extraction of hydrogen from gas mixtures are provided. Methods are described for supporting metals and metal alloys which have high hydrogen permeability, but which are either too thin to be self supporting, too weak to resist differential pressures across the membrane, or which become embrittled by hydrogen. Support materials are chosen to be lattice matched to the metals and metal alloys. Preferred metals with high permeability for hydrogen include vanadium, niobium, tantalum, zirconium, palladium, and alloys thereof. Hydrogen-permeable membranes include those in which the pores of a porous support matrix are blocked by hydrogen-permeable metals and metal alloys, those in which the pores of a porous metal matrix are blocked with materials which make the membrane impervious to gases other than hydrogen, and cermets fabricated by sintering powders of metals with powders of lattice-matched ceramic.

Mundschau, Michael V.

2005-05-31T23:59:59.000Z

359

Transportation System Concept of Operations  

SciTech Connect (OSTI)

The Nuclear Waste Policy Act of 1982 (NWPA), as amended, authorized the DOE to develop and manage a Federal system for the disposal of SNF and HLW. OCRWM was created to manage acceptance and disposal of SNF and HLW in a manner that protects public health, safety, and the environment; enhances national and energy security; and merits public confidence. This responsibility includes managing the transportation of SNF and HLW from origin sites to the Repository for disposal. The Transportation System Concept of Operations is the core high-level OCRWM document written to describe the Transportation System integrated design and present the vision, mission, and goals for Transportation System operations. By defining the functions, processes, and critical interfaces of this system early in the system development phase, programmatic risks are minimized, system costs are contained, and system operations are better managed, safer, and more secure. This document also facilitates discussions and understanding among parties responsible for the design, development, and operation of the Transportation System. Such understanding is important for the timely development of system requirements and identification of system interfaces. Information provided in the Transportation System Concept of Operations includes: the functions and key components of the Transportation System; system component interactions; flows of information within the system; the general operating sequences; and the internal and external factors affecting transportation operations. The Transportation System Concept of Operations reflects OCRWM's overall waste management system policies and mission objectives, and as such provides a description of the preferred state of system operation. The description of general Transportation System operating functions in the Transportation System Concept of Operations is the first step in the OCRWM systems engineering process, establishing the starting point for the lower level descriptions. of subsystems and components, and the Transportation System Requirements Document. Other program and system documents, plans, instructions, and detailed designs will be consistent with and informed by the Transportation System Concept of Operations. The Transportation System Concept of Operations is a living document, enduring throughout the OCRWM systems engineering lifecycle. It will undergo formal approval and controlled revisions as appropriate while the Transportation System matures. Revisions will take into account new policy decisions, new information available through system modeling, engineering investigations, technical analyses and tests, and the introduction of new technologies that can demonstrably improve system performance.

N. Slater-Thompson

2006-08-16T23:59:59.000Z

360

Silver (Ag) Transport Mechanisms in TRISO coated particles: A Critical Review  

SciTech Connect (OSTI)

Transport of 110mAg in the intact SiC layer of TRISO coated particles has been studied for approximately 30 years without arriving at a satisfactory explanation of the transport mechanism. In this paper the possible mechanisms postulated in previous experimental studies, both in-reactor and out-of reactor research environment studies are critically reviewed and of particular interest are relevance to very high temperature gas reactor operating and accident conditions. Among the factors thought to influence Ag transport are grain boundary stoichiometry, SiC grain size and shape, the presence of free silicon, nano-cracks, thermal decomposition, palladium attack, transmutation products, layer thinning and coated particle shape. Additionally new insight to nature and location of fission products has been gained via recent post irradiation electron microscopy examination of TRISO coated particles from the DOE’s fuel development program. The combined effect of critical review and new analyses indicates a direction for investigating possible the Ag transport mechanism including the confidence level with which these mechanisms may be experimentally verified.

I J van Rooyen; J H Neethling; J A A Engelbrecht; P M van Rooyen; G Strydom

2012-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Silver (Ag) Transport Mechanisms in TRISO Coated Particles: A Critical Review  

SciTech Connect (OSTI)

Transport of 110mAg in the intact SiC layer of TRISO coated particles has been studied for approximately 30 years without arriving at a satisfactory explanation of the transport mechanism. In this paper the possible mechanisms postulated in previous experimental studies, both in-reactor and out-of reactor research environment studies are critically reviewed and of particular interest are relevance to very high temperature gas reactor operating and accident conditions. Among the factors thought to influence Ag transport are grain boundary stoichiometry, SiC grain size and shape, the presence of free silicon, nano-cracks, thermal decomposition, palladium attack, transmutation products, layer thinning and coated particle shape. Additionally new insight to nature and location of fission products has been gained via recent post irradiation electron microscopy examination of TRISO coated particles from the DOE’s fuel development program. The combined effect of critical review and new analyses indicates a direction for investigating possible the Ag transport mechanism including the confidence level with which these mechanisms may be experimentally verified.

IJ van Rooyen; ML Dunzik-Gougar; PM van Rooyen

2014-05-01T23:59:59.000Z

362

E-Print Network 3.0 - al si fe Sample Search Results  

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

morphology... -section of a strut showing the microstructure. Dendrites of -Al and eutectic structure of Al-Si with needles of - AlFeSi... . ... Source: Groningen,...

363

Development of an SI DI Ethanol Optimized Flex Fuel Engine Using...  

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

Development of an SI DI Ethanol Optimized Flex Fuel Engine Using Advanced Valvetrain Development of an SI DI Ethanol Optimized Flex Fuel Engine Using Advanced Valvetrain...

364

Atomic-Level Computer Simulation of SiC: Defect Accumulation...  

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

Atomic-Level Computer Simulation of SiC: Defect Accumulation, Mechanical Properties and Defect Recovery. Atomic-Level Computer Simulation of SiC: Defect Accumulation, Mechanical...

365

A Brief History of Transportation  

E-Print Network [OSTI]

for steam generation) · Hand crank replaced by Kettering's electric starter · Radiator allowed IC engines Have we come full circle?? #12;Eras of Transport Boats Animal drawn transport 1800s steam power Henry Ford uses mass manufacturing techniques to bring low manufacturing costs to IC Engine 1914 WW1 IC

Handy, Susan L.

366

History of federal transportation policy  

E-Print Network [OSTI]

History of federal transportation policy TTP 220 S. Handy 4/7/14 #12;Federal Transportation Policy · Rise of road building (1910s +) · Rise of mandated planning (1960s +) · Rise of transit funding (1960s for road building support from the start! · Cars seen as way to decentralize, to get people away from ills

Handy, Susan L.

367

Sustainable Transportation Energy Pathways Research  

E-Print Network [OSTI]

/Security of Energy Supply, esp. in transportation sector · Air Pollutant Emissions · Greenhouse Gas Emissions (GHG of air pollutant emissions. · World transportation sector 97% dependent on oil. · # vehicles projected strategy should have a "portfolio" approach with multiple solutions Fuel Alternatives · Hydrogen · Biofuels

Handy, Susan L.

368

CREATING A BALANCED TRANSPORTATION SYSTEM  

E-Print Network [OSTI]

think we need to make people aware that our traffic concepts of today are not sustainable) Orange .Transport . Architecture .Water management . #12;5 The Netherlands (as it is) Orange .Transport . Architecture .Water management . #12;6 United States Oregon Portland The Netherlands Utrecht Founded 1776 1859

Bertini, Robert L.

369

Radioactive Material Transportation Practices Manual  

Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

This Manual establishes standard transportation practices for the Department of Energy, including National Nuclear Security Administration to use in planning and executing offsite shipments of radioactive materials and waste. The revision reflects ongoing collaboration of DOE and outside organizations on the transportation of radioactive material and waste. Cancels DOE M 460.2-1.

2008-06-04T23:59:59.000Z

370

7, 38373857, 2007 Global transports  

E-Print Network [OSTI]

and 180 are still transporting into soil and water. It is found that lighter PCBs have more long range international concern with identifying and managing environmentally persistent substances that are bothACPD 7, 3837­3857, 2007 Global transports and budgets of PCBs P. Huang et al. Title Page Abstract

Paris-Sud XI, Université de

371

22nd Annual Transportation Research Conference  

E-Print Network [OSTI]

22nd Annual Transportation Research Conference May 24-25, 2011 Crowne Plaza St. Paul Riverfront for Transportation Studies 22nd Annual Transportation Research Conference Welcome to the Conference The University of Minnesota's Center for Transportation Studies is pleased to present its 22nd Annual Transportation Research

Minnesota, University of

372

Antibody binding to p-Si using LANL SAM chemistry  

SciTech Connect (OSTI)

This NMSBA-sponsored project involves the attachment of antibodies to polymeric silicon (p-Si) surfaces, with the ultimate goal of attaching antibodies to nanowires for Vista Therapeutics, Inc. (Santa Fe, NM). This presentation describes the functionalization of p-Si surfaces. the activation of terminal carboxylates on these surfaces, the conjugation of antibodies, and the analyses undertaken at each step. The results of this work show that antibody conjugation is possible on p-Si coatings using the well-known EDC/NHS activation chemistry.

Anderson, Aaron S [Los Alamos National Laboratory

2010-12-06T23:59:59.000Z

373

Transportation Research Board Conference January 10, 2005 Using Custom Transportation Data  

E-Print Network [OSTI]

Transportation Research Board Conference January 10, 2005 Using Custom Transportation Data Collection Software with Handheld Computers for Education, Research, and Practice Transportation Research, Andrew Byrd, Michael Rose, Tarek Abou El-Seoud #12;Transportation Research Board Conference January 10

Bertini, Robert L.

374

A low thermal impact annealing process for SiO{sub 2}-embedded Si nanocrystals with optimized interface quality  

SciTech Connect (OSTI)

Silicon nanocrystals (Si NCs) for 3rd generation photovoltaics or optoelectronic applications can be produced by several industrially compatible physical or chemical vapor deposition technologies. A major obstacle for the integration into a fabrication process is the typical annealing to form and crystallize these Si quantum dots (QDs) which involves temperatures ?1100??°C for 1?h. This standard annealing procedure allows for interface qualities that correspond to more than 95% dangling bond defect free Si NCs. We study the possibilities to use rapid thermal annealing (RTA) and flash lamp annealing to crystallize the Si QDs within seconds or milliseconds at high temperatures. The Si NC interface of such samples exhibits huge dangling bond defect densities which makes them inapplicable for photovoltaics or optoelectronics. However, if the RTA high temperature annealing is combined with a medium temperature inert gas post-annealing and a H{sub 2} passivation, luminescent Si NC fractions of up to 90% can be achieved with a significantly reduced thermal load. A new figure or merit, the relative dopant diffusion length, is introduced as a measure for the impact of a Si NC annealing procedure on doping profiles of device structures.

Hiller, Daniel, E-mail: daniel.hiller@imtek.uni-freiburg.de; Gutsch, Sebastian; Hartel, Andreas M.; Zacharias, Margit [IMTEK, Faculty of Engineering, Albert-Ludwigs-University Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg (Germany); Löper, Philipp [Fraunhofer ISE, Heidenhofstr. 2, 79110 Freiburg (Germany); Gebel, Thoralf [DTF Technology GmbH, Am Promigberg 16, 01108 Dresden (Germany)

2014-04-07T23:59:59.000Z

375

Atomic-Scale Engineering of the SiC-SiO{sub 2} Interface  

SciTech Connect (OSTI)

We report results from three distinct but related thrusts that aim to elucidate the atomic-scale structure and properties of the Sic-SiO{sub 2} interface. (a) First-principles theoretical calculations probe the global bonding arrangements and the local processes during oxidation; (b) Z-contrast atomic-resolution transmission electron microscopy and electron-energy-loss spectroscopy provide images and interface spectra, and (c) nuclear techniques and electrical measurements are used to profile N at the interface and determine interface trap densities.

Buczko, R.; Chung, G.; Di Ventra, M.; Duscher, G.; Feldman, L.C.; Huang, M.B.; McDonald, K.; Pantelides, S.T.; Pennycook, S.J.; Radtke, C.; Stedile, F.C.; Tin, C.C.; Weller, R.A. Baumvol, I.; Williams, J.R.; Won, J.

1999-11-14T23:59:59.000Z

376

Behavior of Si and C atoms in ion amorphized SiC. | 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 someone6 M. Babzien, I. Ben-Zvi, P.2.2 Beamline21Becky ChamberlinSi and

377

Climate and Transportation Solutions: Findings from the 2009 Asilomar Conference on Transportation and Energy Policy  

E-Print Network [OSTI]

Emissions Impact of a Bus Rapid Transport Project in Mexicoemissions from the main classes of transport emitters in the Mexico

Sperling, Daniel; Cannon, James S.

2010-01-01T23:59:59.000Z

378

Photovoltaic devices based on high density boron-doped single-walled carbon nanotube/n-Si heterojunctions  

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

A simple and easily processible photovoltaic device has been developed based on borondoped single-walled carbon nanotubes (B-SWNTs) and n-type silicon (n-Si) heterojunctions. The single-walled carbon nanotubes (SWNTs) were substitutionally doped with boron atoms by thermal annealing, in the presence of B2O3. The samples used for these studies were characterized by Raman spectroscopy, thermal gravimetric analysis (TGA), transmission electron microscopy (TEM), and x-ray photoelectron spectroscopy (XPS). The fully functional solar cell devices were fabricated by airbrush deposition that generated uniform B-SWNT films on top of the n-Si substrates. The carbon nanotube films acted as exciton-generation sites, charge collection and transportation, while the heterojunctions formed between B-SWNTs and n-Si acted as charge dissociation centers. The current-voltage characteristics in the absence of light and under illumination, as well as optical transmittance spectrum are reported here. It should be noted that the device fabrication process can be made amenable to scalability by depositing direct and uniform films using airbrushing, inkjet printing, or spin-coating techniques.

Saini, Viney [Univ. of Arkansas, Little Rock, AR (United States); Li, Zhongrui [Univ. of Arkansas, Little Rock, AR (United States); Bourdo, Shawn [Univ. of Arkansas, Little Rock, AR (United States); Kunets, Vasyl P. [Univ. of Arkansas, Fayetteville, AR (United States); Trigwell, Steven [ASRC Aerospace Corp., Kennedy Space Center, FL (United States); Couraud, Arthur [Univ. of Arkansas, Little Rock, AR (United States) and Ecole d'Ingenieurs de CESI-EIA, La Couronne (France); Rioux, Julien [Univ. of Arkansas, Little Rock, AR (United States) and Ecole d'Ingenieurs du CESI-EIA, La Couronne (France); Boyer, Cyril [Univ. of Arkansas, Little Rock, AR (United States) and Ecole d'Ingenieurs du CESI-EIA, La Couronne (France); Nteziyaremye, Valens [Univ. of Arkansas, Little Rock, AR (United States); Dervishi, Enkeleda [Univ. of Arkansas, Little Rock, AR (United States); Biris, Alexandru R. [National Institute for Research and Development of Isotopic and Molecular Technologies, Cluj-Napoca (Romania); Salamo, Gregory J. [Univ. of Arkansas, Fayetteville, AR (United States); Viswanathan, Tito [Univ. of Arkansas, Little Rock, AR (United States); Biris, Alexandru S. [Univ. of Arkansas, Little Rock, AR (United States)

2011-01-13T23:59:59.000Z

379

Multi-Path Transportation Futures Study - Lessons for the Transportati...  

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

Multi-Path Transportation Futures Study - Lessons for the Transportation Energy Futures Study Multi-Path Transportation Futures Study - Lessons for the Transportation Energy...

380

Report on the 1961 TRANSPORTATION RESEARCH--------.. . -. .  

E-Print Network [OSTI]

) ) ) Report on the 1961 TRANSPORTATION RESEARCH--------.. . -. . AND SERVICE ACTIVITIES IC C Negotiations with carriers ..·..... Resea rch activities ·...........·... Transportation Section staff resea rch . Transportation rate indexes .... Fish meal, scrap, and solublf's information

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Parking & Transportation Department RESIDENT -PERSONAL INFORMATION  

E-Print Network [OSTI]

Parking & Transportation Department RESIDENT - PERSONAL INFORMATION Date know if you are interested in: Public Transportation Car Pool Van Pool _____________________________________________________________________________________ Please be sure to contact the Parking & Transportation Department with any changes to your information, i

Oliver, Douglas L.

382

It's About Time: Investing in Transportation to  

E-Print Network [OSTI]

MARCH 2011 It's About Time: Investing in Transportation to Keep Texas Economically Competitive #12 of Contents Preface 1 The Challenge Facing Texans 3 Texas Transportation Action Principles 6 Texas' Deteriorating Transportation System: Background and Measurement 8 Baseline Scenario: Unacceptable Conditions

383

Public School Transportation National and Regional  

E-Print Network [OSTI]

Public School Transportation National and Regional Perspectives: An Update Presented to Education University #12;Table of Contents I. Current Transportation Funding Policies ..................................................................................................................................1 B. Transportation Funding Options Used by States

Mohaghegh, Shahab

384

Transportation Routing Analysis Geographic Information System (TRAGIS)  

E-Print Network [OSTI]

Transportation Routing Analysis Geographic Information System (TRAGIS) Model and Network Databases The Transportation Routing Analysis Geographic Information System (TRAGIS) model is a geographic information system tool for modeling transportation routing. TRAGIS offers numerous options for route calculation

385

Fuel Cells for Transportation | Department of Energy  

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

DOE R&D Activities Fuel Cells for Transportation Fuel Cells for Transportation Photo of Ford Focus fuel cell car in front of windmills The transportation sector is the single...

386

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES  

E-Print Network [OSTI]

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES DEPARTMENT OF CIVIL & ENVIRONMENTAL ENGINEERING SCHOOL OF URBAN STUDIES AND PLANNING First Annual Portland Metropolitan Region Transportation System Performance Report September 8, 2004 #12;2First Annual Portland Metropolitan Region Transportation

Bertini, Robert L.

387

Anomalous transport through porous and fractured media  

E-Print Network [OSTI]

Anomalous transport, understood as the nonlinear scaling with time of the mean square displacement of transported particles, is observed in many physical processes, including contaminant transport through porous and fractured ...

Kang, Peter Kyungchul

2014-01-01T23:59:59.000Z

388

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

In the present quarter, the possibility of using a more complex interfacial engineering approach to the development of reliable and stable oxygen transport perovskite ceramic membranes/metal seals is discussed. Experiments are presented and ceramic/metal interactions are characterized. Crack growth and fracture toughness of the membrane in the reducing conditions are also discussed. Future work regarding this approach is proposed are evaluated for strength and fracture in oxygen gradient conditions. Oxygen gradients are created in tubular membranes by insulating the inner surface from the reducing environment by platinum foils. Fracture in these test conditions is observed to have a gradient in trans and inter-granular fracture as opposed to pure trans-granular fracture observed in homogeneous conditions. Fracture gradients are reasoned to be due to oxygen gradient set up in the membrane, variation in stoichiometry across the thickness and due to varying decomposition of the parent perovskite. The studies are useful in predicting fracture criterion in actual reactor conditions and in understanding the initial evolution of fracture processes.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2003-01-01T23:59:59.000Z

389

Epitaxial growth of rare-earth silicides on (111) Si  

SciTech Connect (OSTI)

Rapid heating with an electron beam has been used to react overlayers of rare-earth (RE) metals with (111) Si, forming epitaxial layers of silicides of Y, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu. Under conventional furnace annealing, forming such silicides on Si typically leads to rough, pitted surfaces. The use of fast beam heating not only results in a much smoother surface topology but also helps promote epitaxial growth on (111) Si in both solid and liquid phase reactions. These epitaxial silicides have a hexagonal RESi/sub approximately1.7/ structure (defected AlB/sub 2/ type). Their orientation with the Si substrate is (0001)parallel(111), with predicted lattice mismatches ranging from +0.83 to -2.55%.

Knapp, J.A.; Picraux, S.T.

1986-02-17T23:59:59.000Z

390

Theoretical investigations of two Si-based spintronic materials  

SciTech Connect (OSTI)

Two Si-based spintronic materials, a Mn-Si digital ferromagnetic heterostructure ({delta}-layer of Mn doped in Si) with defects and dilutely doped Mn{sub x}Si{sub 1-x} alloy are investigated using a density-functional based approach. We model the heterostructure and alloy with a supercell of 64 atoms and examine several configurations of the Mn atoms. We find that 25% substitutional defects without vacancies in the {delta} layer diminishes half metallicity of the DFH substantially. For the alloy, the magnetic moment M ranges from 1.0-9.0 {mu}{sub B}/unit-cell depending on impurity configuration and concentration. Mn impurities introduce a narrow band of localized states near E{sub F}. These alloys are not half metals though their moments are integer. We explain the substantially different magnetic moments.

Fong, C Y; Snow, R; Shaughnessy, M; Pask, J E; Yang, L H

2007-08-03T23:59:59.000Z

391

Radiation hardness of si strip detectors with integrated coupling capacitors  

SciTech Connect (OSTI)

Si strip detectors with integrated coupling capacitors between diode and metallization and with separate bias resistors for each strip have been exposed to ionising radiation. Results from measurements of detector response before and after irradiation are presented.

Dijkstra, H.; Horisberger, R.; Hubbeling, L.; Maehlum, G.; Peisert, A.; Weilhammer, P.; Tuuva, T.; Evensen, L.

1989-02-01T23:59:59.000Z

392

Mechanical properties of amorphous Lix Si alloys: a reactive...  

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

was downloaded on 08102013 at 15:46 Please note that terms and conditions apply. Mechanical properties of amorphous Li x Si alloys: a reactive force field study View the table...

393

Photovoltaic nanocrystal scintillators hybridized on Si solar cells  

E-Print Network [OSTI]

Photovoltaic nanocrystal scintillators hybridized on Si solar cells for enhanced conversion@bilkent.edu.tr Abstract: We propose and demonstrate semiconductor nanocrystal based photovoltaic scintillators integrated on solar cells to enhance photovoltaic device parameters including spectral responsivity, open circuit

Demir, Hilmi Volkan

394

additive si source: Topics by E-print Network  

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

x 12,000 or 32,000 km is comparable Stechmann, Samuel N. 45 Polycrystalline silicon thin-film transistor with self-aligned SiGe raised sourcedrain Materials Science Websites...

395

Si Industry at a Crossroads: New Materials or New Factories?  

E-Print Network [OSTI]

Many trends in the silicon industry could be interpreted as the herald of the end of traditional Si scaling. If this premise holds, future performance and system-on-chip applications may not be reached with conventional ...

Fitzgerald, Eugene A.

396

Aqueous, Room Temperature Electrochemical Deposition of Compact Si Films  

E-Print Network [OSTI]

. For all Si deposi- tion experiments, the Al sample was rotated at 850 rpm with a rotat- ing disc electrode scanning electron microscope (FESEM), following Au=Pd sputtering. X-ray diffraction measure- ments were

Suni, Ian Ivar

397

Ge-on-Si laser for silicon photonics  

E-Print Network [OSTI]

Ge-on-Si devices are explored for photonic integration. Importance of Ge in photonics has grown and through techniques developed in our group we demonstrated low density of dislocations (<1x109cm-2) and point defects Ge ...

Camacho-Aguilera, Rodolfo Ernesto

2013-01-01T23:59:59.000Z

398

In situ Study of the Formation of Silicide Phases in Amorphous Ni-Si Mixed Layers  

SciTech Connect (OSTI)

In this paper, we investigated Ni silicide phase formation when Si is added within an as deposited 50 nm Ni film. A series of 22 samples with a Si content varying from 0 to 50 at.% was prepared and systematically investigated with in situ x-ray diffraction. The inert oxide substrate was used to identify the phases which first crystallize in an amorphous Ni-Si mixture of a given concentration. The noncongruent silicides Ni{sub 3}Si and Ni{sub 3}Si{sub 2} are never observed to crystallize readily out of the mixture. A remarkable observation is the initial crystallization at low temperature of a hexagonal Ni-silicide, observed over a broad mixed layer composition [35-49%Si]; this hexagonal phase nucleates readily as a single phase [39-47%Si] or together with Ni{sub 2}Si [35-38%Si] or NiSi [49%Si]. This low-temperature phase is related to the high temperature {theta}-phase, but covers a wide composition range up to 47%Si. For the same Ni-Si films deposited on Si(100), the initial nucleation of the Ni(Si) mixture is similar as for the samples deposited on SiO{sub 2}, such that the complex sequence of metal-rich Ni-silicide phases typically observed during Ni/Si reactions is modified. For samples containing more than 21%Si, a simpler sequential phase formation was observed upon annealing. From pole figures, the phase formation sequence was observed to have a significant influence on the texture of the technologically relevant NiSi phase. For mixture composition ranging from 38% to 43%Si, the initial transient {theta}-phase appears extremely textured on Si(100). The observed transient appearance of a hexagonal phase is of importance in understanding the phase formation mechanisms in the Ni-Si system.

Van Bockstael, C.; Detavernier, C; Van Meirhaeghe, R; Jordan-Sweet, J; Lavoie, C

2009-01-01T23:59:59.000Z

399

Impact of SiC Power Electronic Devices for Hybrid Electric Vehicles Leon M. Tolbert1,2  

E-Print Network [OSTI]

02FCC-37 Impact of SiC Power Electronic Devices for Hybrid Electric Vehicles Leon M. Tolbert1 properties of silicon carbide (SiC) power electronic devices compared with silicon (Si) are expected to have characteristics of Si and SiC are used to develop a simulation model for SiC power electronics devices. The main

Tolbert, Leon M.

400

Thermal decomposition of silane to form hydrogenated amorphous Si film  

DOE Patents [OSTI]

This invention relates to hydrogenated amorphous silicon produced by thermally decomposing silano (SiH.sub.4) or other gases comprising H and Si, at elevated temperatures of about 1700.degree.-2300.degree. C., and preferably in a vacuum of about 10.sup.-8 to 10.sup.-4 torr, to form a gaseous mixture of atomic hydrogen and atomic silicon, and depositing said gaseous mixture onto a substrate outside said source of thermal decomposition to form hydrogenated amorphous silicon.

Strongin, Myron (Center Moriches, NY); Ghosh, Arup K. (Rocky Point, NY); Wiesmann, Harold J. (Wantagh, NY); Rock, Edward B. (Oxford, GB); Lutz, III, Harry A. (Midlothian, VA)

1980-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Et si c'tait de la dissonance cognitive ?  

E-Print Network [OSTI]

EA 4272 Et si c'était de la dissonance cognitive ? Olivier Brunel (*) Céline Gallen (**) 2010 dissonance cognitive ? 27ème congrès international de l'Association Française de Marketing 18-20 Mai 2011,version1-17Dec2010 #12;2 Et si c'était de la dissonance cognitive ? Résumé Festinger propose en 1957 la

Paris-Sud XI, Université de

402

Detailed arsenic concentration profiles at Si/SiO2 interfaces  

SciTech Connect (OSTI)

The pile-up of arsenic at the Si/SiO2 interface after As implantation and annealing was investigated by high resolution Z-contrast imaging, electron energy-loss spectroscopy EELS, grazing incidence x-ray fluorescence spectroscopy GI-XRF, secondary ion mass spectrometry, x-ray photoelectron spectroscopy, Rutherford backscattering spectrometry, as well as Hall mobility and four-point probe resistivity measurements. After properly taking into account their respective artifacts, the results of all methods are compatible with each other, with EELS and GI-XRF combined with etching providing similar spatial resolution on the nanometer scale for the dopant profile. The sheet concentration of the piled-up As at the interface was found to be 11015 cm 2 for an implanted dose of 11016 cm 2 with a maximum concentration of 10 at. %. The strain observed in the Z-contrast images also suggests a significant concentration of local distortions within 3 nm from the interface, which, however, do not seem to involve intrinsic point defects.

Pei, Lirong [ORNL; Duscher, G. [University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL); Steen, Christian [Chair of Electron Devices, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058 Erlangen,; Pichler, Peter [Fraunhofer-Institute, Freiburg, Germany; Ryssel, Heiner [Fraunhofer Institute of Integrated Systems and Device Technology, Schottkystrasse 10, 91058 Erlangen; Napolitani, Enrico [MATIS-CNR-INFM and Dipartimento di Fisica, Universitŕ di Padova, via Marzolo 8, 35141 Padova, Italy; De Salvador, Davide [MATIS-CNR-INFM and Dipartimento di Fisica, Universitŕ di Padova, via Marzolo 8, 35141 Padova, Italy; Piro, Alberto [MATIS-CNR-INFM and Dipartimento di Fisica e Astronomia, Universita di Catania, Via S. Sofia 64,; Terrasi, Antonio [MATIS-CNR-INFM and Dipartimento di Fisica e Astronomia, Universita di Catania, Via S. Sofia 64,

2008-01-01T23:59:59.000Z

403

Interim UFD Storage and Transportation - Transportation Working Group Report  

SciTech Connect (OSTI)

The Used Fuel Disposition (UFD) Transportation Task commenced in October 2010. As its first task, Pacific Northwest National Laboratory (PNNL) compiled a draft list of structures, systems, and components (SSCs) of transportation systems and their possible degradation mechanisms during very long term storage (VLTS). The list of SSCs and the associated degradation mechanisms [known as features, events, and processes (FEPs)] were based on the list of SSCs and degradation mechanisms developed by the UFD Storage Task (Stockman et al. 2010)

Maheras, Steven J.; Ross, Steven B.

2011-03-30T23:59:59.000Z

404

UFD Storage and Transportation - Transportation Working Group Report  

SciTech Connect (OSTI)

The Used Fuel Disposition (UFD) Transportation Task commenced in October 2010. As its first task, Pacific Northwest National Laboratory (PNNL) compiled a list of structures, systems, and components (SSCs) of transportation systems and their possible degradation mechanisms during extended storage. The list of SSCs and the associated degradation mechanisms [known as features, events, and processes (FEPs)] were based on the list of used nuclear fuel (UNF) storage system SSCs and degradation mechanisms developed by the UFD Storage Task (Hanson et al. 2011). Other sources of information surveyed to develop the list of SSCs and their degradation mechanisms included references such as Evaluation of the Technical Basis for Extended Dry Storage and Transportation of Used Nuclear Fuel (NWTRB 2010), Transportation, Aging and Disposal Canister System Performance Specification, Revision 1 (OCRWM 2008), Data Needs for Long-Term Storage of LWR Fuel (EPRI 1998), Technical Bases for Extended Dry Storage of Spent Nuclear Fuel (EPRI 2002), Used Fuel and High-Level Radioactive Waste Extended Storage Collaboration Program (EPRI 2010a), Industry Spent Fuel Storage Handbook (EPRI 2010b), and Transportation of Commercial Spent Nuclear Fuel, Issues Resolution (EPRI 2010c). SSCs include items such as the fuel, cladding, fuel baskets, neutron poisons, metal canisters, etc. Potential degradation mechanisms (FEPs) included mechanical, thermal, radiation and chemical stressors, such as fuel fragmentation, embrittlement of cladding by hydrogen, oxidation of cladding, metal fatigue, corrosion, etc. These degradation mechanisms are discussed in Section 2 of this report. The degradation mechanisms have been evaluated to determine if they would be influenced by extended storage or high burnup, the need for additional data, and their importance to transportation. These categories were used to identify the most significant transportation degradation mechanisms. As expected, for the most part, the transportation importance was mirrored by the importance assigned by the UFD Storage Task. A few of the more significant differences are described in Section 3 of this report

Maheras, Steven J.; Ross, Steven B.

2011-08-01T23:59:59.000Z

405

Boron diffusion in nanocrystalline 3C-SiC  

SciTech Connect (OSTI)

The diffusion of boron in nanocrystalline silicon carbide (nc-SiC) films with a grain size of 4–7 nm is studied using a poly-Si boron source. Diffusion is found to be much faster than in monocrystalline SiC as it takes place within the grain boundary (GB) network. Drive-in temperatures of 900–1000°C are suitable for creating shallow boron profiles up to 100?nm deep, while 1100°C is sufficient to flood the 200?nm thick films with boron. From the resulting plateau at 1100?°C a boron segregation coefficient of 28 between nc-SiC and the Si substrate, as well as a GB boron solubility limit of 0.2?nm{sup ?2} is determined. GB diffusion in the bulk of the films is Fickian and thermally activated with D{sub GB}(T)=(3.1?5.6)×10{sup 7}exp(?5.03±0.16??eV/k{sub B}T) cm{sup 2}s{sup ?1}. The activation energy is interpreted in terms of a trapping mechanism at dangling bonds. Higher boron concentrations are present at the nc-SiC surface and are attributed to immobilized boron.

Schnabel, Manuel, E-mail: manuel.schnabel@ise.fraunhofer.de [Fraunhofer ISE, Heidenhofstr. 2, 79110 Freiburg (Germany); Department of Materials, University of Oxford, Parks Rd, Oxford OX1 3PH (United Kingdom); Weiss, Charlotte; Rachow, Thomas; Löper, Philipp; Janz, Stefan [Fraunhofer ISE, Heidenhofstr. 2, 79110 Freiburg (Germany); Canino, Mariaconcetta; Summonte, Caterina [CNR-IMM, Via Piero Gobetti 101, 40129 Bologna (Italy); Mirabella, Salvo [CNR-IMM MATIS, Via S. Sofia 64, 95123 Catania (Italy); Wilshaw, Peter R. [Department of Materials, University of Oxford, Parks Rd, Oxford OX1 3PH (United Kingdom)

2014-05-26T23:59:59.000Z

406

Independent Activity Report, Office of Secure Transportation...  

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

Office of Secure Transportation - March 2011 Independent Activity Report, Office of Secure Transportation - March 2011 March 2011 Report for the Appropriateness of Revisions to the...

407

Transportation Protocols Working Group First Conference Call...  

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

Call March 1, 1999 Conference Call Summary The first conference call of the Transportation External Coordination Working Group (TECWG) DOE Transportation Protocols Working...

408

Additive Manufacturing Opportunities for Transportation | ornl...  

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

Additive Manufacturing Opportunities for Transportation Mar 13 2015 10:00 AM - 11:00 AM Lonnie Love, Manufacturing Systems Research Group Transportation Science Seminar Series...

409

Transportation and Stationary Power Integration Workshop Agenda...  

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

Agenda, October 27, 2008, Phoenix, Arizonia Transportation and Stationary Power Integration Workshop Agenda, October 27, 2008, Phoenix, Arizonia Agenda for the Transportation and...

410

ADMINISTRATIVE RECORDS SCHEDULE 9: TRAVEL AND TRANSPORTATION...  

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

9: TRAVEL AND TRANSPORTATION RECORDS (Revision 2) ADMINISTRATIVE RECORDS SCHEDULE 9: TRAVEL AND TRANSPORTATION RECORDS (Revision 2) This schedule covers records documenting the...

411

Independent Oversight Evaluation, Office of Secure Transportation...  

Office of Environmental Management (EM)

Evaluation, Office of Secure Transportation - February 2004 Independent Oversight Evaluation, Office of Secure Transportation - February 2004 February 2004 Evaluation of the Office...

412

Sustainable Transportation Success Stories | Department of Energy  

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

Sustainable Transportation Success Stories The Office of Energy Efficiency and Renewable Energy's (EERE) successes in converting tax dollars into sustainable transportation...

413

Transportation Issues and Resolutions Compilation of Laboratory...  

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

Transportation Team identified the retrievability and subcriticality safety functions to be of primary importance to the transportation of UNF after extended storage and to...

414

Independent Oversight Inspection, Office of Secure Transportation...  

Office of Environmental Management (EM)

Office of Secure Transportation - March 2007 Independent Oversight Inspection, Office of Secure Transportation - March 2007 March 2007 Inspection of Emergency Management at the...

415

Transportation and Stationary Power Integration Workshop Attendees...  

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

Attendees List Transportation and Stationary Power Integration Workshop Attendees List List of attendees for the Transportation and Stationary Power Integration Workshop...

416

Facilitated Strontium Transport by Remobilization of Strontium...  

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

Facilitated Strontium Transport by Remobilization of Strontium-Containing Secondary Precipitates in Hanford Site Subsurface. Facilitated Strontium Transport by Remobilization of...

417

Vehicle Technologies Office: Transitioning the Transportation...  

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

Office: Transitioning the Transportation Sector - Exploring the Intersection of H2 Fuel Cell and Natural Gas Vehicles Vehicle Technologies Office: Transitioning the Transportation...

418

Standardization of Transport Properties Measurements: Internal...  

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

Standardization of Transport Properties Measurements: Internal Energy Agency (IEA-AMT) Annex on Thermoelectric Standardization of Transport Properties Measurements: Internal Energy...

419

Analysis of Transportation and Logistics Challenges Affecting...  

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

of Transportation and Logistics Challenges Affecting the Deployment of Larger Wind Turbines: Summary of Results Analysis of Transportation and Logistics Challenges Affecting...

420

Transitioning the Transportation Sector: Exploring the Intersection...  

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

the Transportation Sector: Exploring the Intersection of Hydrogen Fuel Cell and Natural Gas Vehicles Transitioning the Transportation Sector: Exploring the Intersection...

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Seamless Transport Policy: Institutional and Regulatory Aspects...  

Open Energy Info (EERE)

Seamless Transport Policy: Institutional and Regulatory Aspects of Inter-Modal Coordination Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Seamless Transport Policy:...

422

Clean Cities & Transportation Tools | Department of Energy  

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

& Transportation Tools Clean Cities & Transportation Tools U.S. Department of Energy (DOE) Technical Assistance Project (TAP) for state and local officials Webinar presentation on...

423

Correlated Biofilm Imaging, Transport and Metabolism Measurements...  

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

Biofilm Imaging, Transport and Metabolism Measurements via Combined Nuclear Magnetic Resonance and Confocal Correlated Biofilm Imaging, Transport and Metabolism Measurements via...

424

Helpful links for materials transport, safety, etc.  

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

Helpful links for materials transport, safety, etc. relating to experiment safety at the APS. Internal Reference Material: Transporting Hazardous Materials "Natural" radioactivity...

425

Transportation, Aging and Disposal Canister System Performance...  

Office of Environmental Management (EM)

specifications for selected system components of the Transportation, Aging and Disposal (TAD) canister-based system. Transportation, Aging and Disposal Canister System Performance...

426

Recovery Act?Transportation Electrification Education Partnership...  

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

Recovery ActTransportation Electrification Education Partnership for Green Jobs and Sustainable Mobility Recovery ActTransportation Electrification Education Partnership for...

427

Reducing Emissions Through Sustainable Transport: Proposal for...  

Open Energy Info (EERE)

Through Sustainable Transport: Proposal for a Sectoral Approach Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Reducing Emissions Through Sustainable Transport:...

428

Spring 2015 National Transportation Stakeholders Forum Meeting...  

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

5 National Transportation Stakeholders Forum Meeting, New Mexico Spring 2015 National Transportation Stakeholders Forum Meeting, New Mexico Save the Date The spring 2015 meeting...

429

Methane Combustion over Pd/ZrO2/SiC, Pd/CeO2/SiC, Pd/Zr0.5Ce0.5O2/SiC Catalysts  

E-Print Network [OSTI]

1 Methane Combustion over Pd/ZrO2/SiC, Pd/CeO2/SiC, Pd/Zr0.5Ce0.5O2/SiC Catalysts Xiaoning Guo a Laboratory of Coal Conversion, Institute of Coal Chemistry, Taiyuan 030001, PR China b GREMI UMR6606 CNRS0.5O2 solid solution) modified Pd/SiC catalysts for methane combustion are studied. XRD and XPS

Paris-Sud XI, Université de

430

European PVSECE Glasgow, Scotland 2000 III-V SPACE SOLAR CELLS ON Si SUBSTRATES USING GRADED GeSi BUFFERS  

E-Print Network [OSTI]

As directly grown on Si, rendering the GaAs useless as a photovoltaic material. Nevertheless, many groups have, this dislocation density has still limited the minority carrier lifetimes obtained to ~ 1-3 ns, even after hydrogen

431

Mechanical characterization of Si-C(O) fiber/SiC (CVI) matrix composites with a BN-interphase  

SciTech Connect (OSTI)

The mechanical behavior of three CVI-processed 2D woven SiC/BN/SiC composite materials with different initial BN interphase thicknesses has been investigated by means of tensile and impact tests. The results have established the efficiency of a BN interphase in promoting a nonlinear/noncatastrophic tensile behavior and high impact resistance. The effect of the initial BN interphase thickness on the resulting mechanical behavior has also been demonstrated. AES and TEM has revealed the presence of a SiO[sub 2]/C double layer at the BN/fiber interface, which might result from a decomposition undergone by the Si-C(O) Nicalon fiber during processing. It has been suggested that the influence of the initial BN interphase thickness on the mechanical properties of the composites results from both changes occurring in the composition and morphology of the interfacial zones and modifications of the interfacial forces due to accommodation of the radial residual clamping stress.

Prouhet, S.; Camus, G.; Labrugere, C.; Guette, A. (Lab. des Composites Thermostructuraux, Pessac (France)); Martin, E. (Univ. de Bordeaux, Talence (France). Lab. de Genie Mechanique de l'IUT A)

1994-03-01T23:59:59.000Z

432

OXYGEN TRANSPORT CERAMIC MEMBRANES  

SciTech Connect (OSTI)

Conversion of natural gas to liquid fuels and chemicals is a major goal for the Nation as it enters the 21st Century. Technically robust and economically viable processes are needed to capture the value of the vast reserves of natural gas on Alaska's North Slope, and wean the Nation from dependence on foreign petroleum sources. Technologies that are emerging to fulfill this need are all based syngas as an intermediate. Syngas (a mixture of hydrogen and carbon monoxide) is a fundamental building block from which chemicals and fuels can be derived. Lower cost syngas translates directly into more cost-competitive fuels and chemicals. The currently practiced commercial technology for making syngas is either steam methane reforming (SMR) or a two-step process involving cryogenic oxygen separation followed by natural gas partial oxidation (POX). These high-energy, capital-intensive processes do not always produce syngas at a cost that makes its derivatives competitive with current petroleum-based fuels and chemicals. This project has the following 6 main tasks: Task 1--Design, fabricate and evaluate ceramic to metal seals based on graded ceramic powder/metal braze joints. Task 2--Evaluate the effect of defect configuration on ceramic membrane conductivity and long term chemical and structural stability. Task 3--Determine materials mechanical properties under conditions of high temperatures and reactive atmospheres. Task 4--Evaluate phase stability and thermal expansion of candidate perovskite membranes and develop techniques to support these materials on porous metal structures. Task 5--Assess the microstructure of membrane materials to evaluate the effects of vacancy-impurity association, defect clusters, and vacancy-dopant association on the membrane performance and stability. Task 6--Measure kinetics of oxygen uptake and transport in ceramic membrane materials under commercially relevant conditions using isotope labeling techniques.

Dr. Sukumar Bandopadhyay; Dr. Nagendra Nagabhushana

2001-12-01T23:59:59.000Z

433

E-Print Network 3.0 - al-low si transformation Sample Search...  

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

-ICR Si NO C2H4 Si FT-ICR Si 6Tesla ICR ICR SWIFT (Stored Waveform Inversed Fourier Transform) Ar (1 10... FT-ICR Si NO C2H4 1. 2. 1 2 1,2 Chemical reaction of Silicon clusters...

434

Posting type Advisory Subject S interference in XRF determination of Si  

E-Print Network [OSTI]

Posting type Advisory Subject S interference in XRF determination of Si Module/Species A/ Si Sites information The primary XRF peak for sulfur has a shoulder that overlaps the primary XRF peak for silicon. XRF spectra for two samples with differing S/Si ratios. Accurate determination of Si is difficult when

Fischer, Emily V.

435

Epitaxy of Nanocrystalline Silicon Carbide on Si(111) at Room Temperature  

E-Print Network [OSTI]

Epitaxy of Nanocrystalline Silicon Carbide on Si(111) at Room Temperature Roberto Verucchi carbide (SiC) has unique chemical, physical, and mechanical properties. A factor strongly limiting Si or plastics that cannot withstand high temperatures. Silicon carbide (SiC) has unique properties that make

Alfè, Dario

436

Effects of Silicon Carbide (SiC) Power Devices on HEV PWM Inverter Losses*  

E-Print Network [OSTI]

Effects of Silicon Carbide (SiC) Power Devices on HEV PWM Inverter Losses* Burak Ozpineci1,3 burak and Education Oak Ridge, TN 37831-0117 Abstract-The emergence of silicon carbide- (SiC-) based power, silicon carbide (SiC) with its superior properties compared with Si, is a good candidate to be used

Tolbert, Leon M.

437

Inverse Problems in Transport Theory  

E-Print Network [OSTI]

This paper is a review of the recent progress in the study of inverse problems for the transport equation in Rn, n ? 2 by the author and M. Choulli [CSt1], [CSt2], ...

438

Challenges in Intelligent Transportation Systems  

E-Print Network [OSTI]

-EURECOM Workshop #12;The Vision: Intelligent Vehicle / Transport Motocycle Warning Emergency Vehicle [Source: BMW F with dielectric housing Fig. 3: Dielectric housing Source: Oliver Klemp (Oliver.Klemp@bmw.de), BMW R&D, Munich

Gesbert, David

439

2030 Transportation and Mobility Plan  

E-Print Network [OSTI]

sections are as follows: 1. Introduction 2. Bi-State MPO Area Description 3. Planning Horizon Description and Data Projections 4. Long Range Plan Presentation 5. Plan Implementation and Monitoring Procedures 6. Bi-State MPO 2030 Transportation..., improved access at the Leigh Avenue/I-540 interchange, and the deployment of appropriate Intelligent Transportation Systems (ITS) projects. The Airport Master Plan Update has estimated a total airport improvement cost of $ 74,170,000 over a Three (3...

Bi-State Metropolitan Planning Organization

2006-08-11T23:59:59.000Z

440

Panel 4 - applications to transportation  

SciTech Connect (OSTI)

The aim of this group was to compile a listing of current and anticipated future problem areas in the transportation industry where the properties of diamond and DLC films make them especially attractive and where the panel could strongly endorse the establishment of DOE/Transportation Industry cooperative research efforts. This section identifies the problem areas for possible applications of diamond/DLC technology and presents indications of current approaches to these problems.

Nichols, F. [Argonne National Lab., IL (United States); Au, J. [Sundstrand Aerospace, Rockford, IL (United States); Bhattacharya, R. [Universal Energy Systems, Inc., Dayton, OH (United States); Bhushan, B. [Ohio State Univ., Columbus (United States); Blunier, D. [Caterpillar, Inc., Peoria, IL (United States); Boardman, B. [Deere & Co., Moline, IL (United States); Brombolich, L. [Compu-Tec Engineering, Chesterfield, MO (United States); Davidson, J. [Vanderbilt Univ., Nashville, TN (United States); Graham, M. [Northwestern Univ., Evanston, IL (United States); Hakim, N. [Detroit Diesel Corp., MI (United States); Harris, K. [Dubbeldee Harris Diamond Corp., Mt. Arlington, NJ (United States); Hay, R. [Norton Diamond Film, Northboro, MA (United States); Herk, L. [Southwest Research Inst., Southfield, MI (United States); Hojnacki, H.; Rourk, D. [Intelligent Structures Incorporated, Canton, MI (United States); Kamo, R. [Adiabatics, Inc., Columbus, IN (United States); Nieman, B. [Allied-Signal Inc., Des Plaines, IL (United States); O`Neill, D. [3M, St. Paul, MN (United States); Peterson, M.B. [Wear Sciences, Arnold, MD (United States); Pfaffenberger, G. [Allison Gas Turbine, Indianapolis, IN (United States); Pryor, R.W. [Wayne State Univ., Detroit, MI (United States); Russell, J. [Superconductivity Publications, Inc., Somerset, NJ (United States); Syniuta, W. [Advanced Mechanical Technology, Inc., Newton, MA (United States); Tamor, M. [Ford Motor Co., Dearborn, MI (United States); Vojnovich, T. [Dept. of Energy, Washington, DC (United States); Yarbrough, W. [Pennsylvania State Univ., University Park (United States); Yust, C.S. [Oak Ridge National Lab., TN (United States)

1993-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Ariany > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 9,92 Kg Emissions addicionals (SO2): 0,006 Kg Durada: 93 min. Cost mitjĂ  del viatge2 : 1,21 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.120'13 Emissions addicionals (CO2): 1.915,23 Kg Emissions addicionals (SO2): 1,18 Kg Temps acumulat: 12,71 dies

Oro, Daniel

442

Alar > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 5,44 Kg Emissions addicionals (SO2): 0,003 Kg Durada: 52 min. Cost mitjĂ  del viatge2 : 0,64 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.712,13 Emissions addicionals (CO2): 1.915,23 Kg Emissions addicionals (SO2): 1,18 Kg Temps acumulat: 12,71 dies

Oro, Daniel

443

Sller > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 3,33 Kg Emissions addicionals (SO2): 0,002 Kg Durada: 26 min. Cost mitjĂ  del viatge2 : 0,64 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.047,55 Emissions addicionals (CO2): 1.171,82 Kg Emissions addicionals (SO2): 0,72 Kg Temps acumulat: 6,36 dies

Oro, Daniel

444

Puigpunyent > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 2,74 Kg Emissions addicionals (SO2): 0,002 Kg Durada: 50 min. Cost mitjĂ  del viatge2 : 0,64 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat'70 Emissions addicionals (CO2): 963,91 Kg Emissions addicionals (SO2): 0,59 Kg Temps acumulat: 12,22 dies

Oro, Daniel

445

Banyalbufar > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 3,40 Kg Emissions addicionals (SO2): 0,002 Kg Durada: 35 min. Cost mitjĂ  del viatge2 : 0,64 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.070'08 Emissions addicionals (CO2): 1.197,02 Kg Emissions addicionals (SO2): 0,74 Kg Temps acumulat: 8,56 dies

Oro, Daniel

446

Bger > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 7,79 Kg Emissions addicionals (SO2): 0,005 Kg Durada: 80 min. Cost mitjĂ  del viatge2 : 0,91 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.449'92 Emissions addicionals (CO2): 2.740,54 Kg Emissions addicionals (SO2): 1,68 Kg Temps acumulat: 19,56 dies

Oro, Daniel

447

Fornalutx > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 4,51 Kg Emissions addicionals (SO2): 0,003 Kg Durada: 46 min. Cost mitjĂ  del viatge2 : 0,64 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.188,35 Emissions addicionals (CO2): 1.587,62 Kg Emissions addicionals (SO2): 0,98 Kg Temps acumulat: 11,24 dies

Oro, Daniel

448

Selva > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 7,23 Kg Emissions addicionals (SO2): 0,004 Kg Durada: 74 min. Cost mitjĂ  del viatge2 : 0,91 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.275'33 Emissions addicionals (CO2): 2.545,24 Kg Emissions addicionals (SO2): 1,56 Kg Temps acumulat: 18,09 dies

Oro, Daniel

449

Estellencs > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 4,69 Kg Emissions addicionals (SO2): 0,003 Kg Durada: 50 min. Cost mitjĂ  del viatge2 : 0,91 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.475'58 Emissions addicionals (CO2): 1.650,63 Kg Emissions addicionals (SO2): 1,01 Kg Temps acumulat: 12,22 dies

Oro, Daniel

450

Campanet > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 7,79 Kg Emissions addicionals (SO2): 0,005 Kg Durada: 80 min. Cost mitjĂ  del viatge2 : 0,91 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.449'92 Emissions addicionals (CO2): 2.740,54 Kg Emissions addicionals (SO2): 1,68 Kg Temps acumulat: 19,56 dies

Oro, Daniel

451

Llub > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 7,86 Kg Emissions addicionals (SO2): 0,005 Kg Durada: 77 min. Cost mitjĂ  del viatge2 : 0,91 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.472'45 Emissions addicionals (CO2): 2.765,74 Kg Emissions addicionals (SO2): 1,70 Kg Temps acumulat: 18,82dies

Oro, Daniel

452

Costitx > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 7,79 Kg Emissions addicionals (SO2): 0,005 Kg Durada: 84 min. Cost mitjĂ  del viatge2 : 0,91 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat.449'92 Emissions addicionals (CO2): 2.740,54 Kg Emissions addicionals (SO2): 1,68 Kg Temps acumulat: 20,53 dies

Oro, Daniel

453

Valldemossa > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 1,88 Kg Emissions addicionals (SO2): 0,001 Kg Durada: 12 min. Cost mitjĂ  del viatge2 : 1,90 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat,,40 Emissions addicionals (CO2): 661,51 Kg Emissions addicionals (SO2): 0,41 Kg Temps acumulat: 2,93 dies

Oro, Daniel

454

Esporles > UIB (en transport pblic)  

E-Print Network [OSTI]

addicionals (CO2): 1,59 Kg Emissions addicionals (SO2): 0,001 Kg Durada: 15 min. Cost mitjĂ  del viatge2 : 0,64 Emissions addicionals (CO2): 0 kg Emissions addicionals (SO2): 0 kg Transport pĂşblicTransport privat'25 Emissions addicionals (CO2): 560,71 Kg Emissions addicionals (SO2): 0,34 Kg Temps acumulat: 3,67 dies

Oro, Daniel

455

Structural and optical properties of {beta}-FeSi{sub 2}/Si(100) prepared by laser ablation method  

SciTech Connect (OSTI)

{beta}-FeSi{sub 2} is a promising material for the application of various electronic, optoelectronic and energy devices. The authors present here the semiconducting properties of {beta}-FeSi{sub 2} films on Si(100) substrate prepared by laser ablation method. Samples were grown using poly-crystalline bulk {beta}-FeSi{sub 2} prepared by horizontal gradient freeze method. For the monitoring of growth, in-situ observation of ablation plume was made through fluorescence spectroscopy. Reflection of high-energy electron beam diffraction (RHEED) was also made in-situ to see the surface morphology. Characterization of the films by X-ray diffraction presented purely {beta}(220) orientation. Raman scattering measurements at room temperature also indicated that the grown films are semiconducting {beta}-FeSi{sub 2}. Optical absorption spectra at room temperature showed absorption coefficient higher than 10{sup 5} cm{sup {minus}1} above the band-gap ({approximately}1.2 eV). It was revealed that high quality semiconducting {beta}-FeSi{sub 2} films can be fabricated by laser ablation method without post-annealing.

Kakemoto, H.; Makita, Y.; Obara, A.; Tsai, Y.; Sakuragi, S.; Ando, S.; Tsukamoto, T.

1997-07-01T23:59:59.000Z

456

Hydrogen intercalation of single and multiple layer graphene synthesized on Si-terminated SiC(0001) surface  

SciTech Connect (OSTI)

Ab initio density functional theory simulations were used to investigate the influence of hydrogen intercalation on the electronic properties of single and multiple graphene layers deposited on the SiC(0001) surface (Si-face). It is shown that single carbon layer, known as a buffer layer, covalently bound to the SiC substrate, is liberated after hydrogen intercalation, showing characteristic Dirac cones in the band structure. This is in agreement with the results of angle resolved photoelectron spectroscopy measurements of hydrogen intercalation of SiC-graphene samples. In contrast to that hydrogen intercalation has limited impact on the multiple sheet graphene, deposited on Si-terminated SiC surface. The covalently bound buffer layer is liberated attaining its graphene like structure and dispersion relation typical for multilayer graphene. Nevertheless, before and after intercalation, the four layer graphene preserved the following dispersion relations in the vicinity of K point: linear for (AAAA) stacking, direct parabolic for Bernal (ABAB) stacking and “wizard hat” parabolic for rhombohedral (ABCA) stacking.

So?tys, Jakub; Piechota, Jacek; Ptasinska, Maria [Interdisciplinary Centre for Mathematical and Computational Modelling, University of Warsaw, Pawi?skiego 5a, 02-106 Warsaw (Poland); Krukowski, Stanis?aw, E-mail: stach@unipress.waw.pl [Interdisciplinary Centre for Mathematical and Computational Modelling, University of Warsaw, Pawi?skiego 5a, 02-106 Warsaw (Poland); Institute of High Pressure Physics, Polish Academy of Sciences, Soko?owska 29/37, 01-142 Warsaw (Poland)

2014-08-28T23:59:59.000Z

457

Apparatus for transporting hazardous materials  

DOE Patents [OSTI]

An apparatus and method are provided for selectively receiving, transporting, and releasing one or more radioactive or other hazardous samples for analysis on a differential thermal analysis (DTA) apparatus. The apparatus includes a portable sample transporting apparatus for storing and transporting the samples and includes a support assembly for supporting the transporting apparatus when a sample is transferred to the DTA apparatus. The transporting apparatus includes a storage member which includes a plurality of storage chambers arrayed circumferentially with respect to a central axis. An adjustable top door is located on the top side of the storage member, and the top door includes a channel capable of being selectively placed in registration with the respective storage chambers thereby permitting the samples to selectively enter the respective storage chambers. The top door, when closed, isolates the respective samples within the storage chambers. A plurality of spring-biased bottom doors are located on the bottom sides of the respective storage chambers. The bottom doors isolate the samples in the respective storage chambers when the bottom doors are in the closed position. The bottom doors permit the samples to leave the respective storage chambers from the bottom side when the respective bottom doors are in respective open positions. The bottom doors permit the samples to be loaded into the respective storage chambers after the analysis for storage and transport to a permanent storage location.

Osterman, Robert A. (Canonsburg, PA); Cox, Robert (West Mifflin, PA)

1992-01-01T23:59:59.000Z

458

Transportation Research Record: Journal of the Transportation Research Board, No. 2307, Transportation Research Board of the National Academies, Washington,  

E-Print Network [OSTI]

141 Transportation Research Record: Journal of the Transportation Research Board, No. 2307, Transportation Research Board of the National Academies, Washington, D.C., 2012, pp. 141­149. DOI: 10. In this research, from 2008 to 2011, the authors adopted transportation board games as an instructional tool

Levinson, David M.

459

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the initial studies on newer compositions and also includes newer approaches to address various materials issues such as in metal-ceramic sealing. The current quarter's research has also focused on developing a comprehensive reliability model for predicting the structural behavior of the membranes in realistic conditions. In parallel to industry provided compositions, models membranes have been evaluated in varying environment. Of importance is the behavior of flaws and generation of new flaws aiding in fracture. Fracture mechanics parameters such as crack tip stresses are generated to characterize the influence of environment. Room temperature slow crack growth studies have also been initiated in industry provided compositions. The electrical conductivity and defect chemistry of an A site deficient compound (La{sub 0.55}Sr{sub 0.35}FeO{sub 3}) was studied. A higher conductivity was observed for La{sub 0.55}Sr{sub 0.35}FeO{sub 3} than that of La{sub 0.60}Sr{sub 0.40}FeO{sub 3} and La{sub 0.80}Sr{sub 0.20}FeO{sub 3}. Defect chemistry analysis showed that it was primarily contributed by a higher carrier concentration in La{sub 0.55}Sr{sub 0.35}FeO{sub 3}. Moreover, the ability for oxygen vacancy generation is much higher in La{sub 0.55}Sr{sub 0.35}FeO{sub 3} as well, which indicates a lower bonding strength between Fe-O and a possible higher catalytic activity for La{sub 0.55}Sr{sub 0.35}FeO{sub 3}. The program continued to investigate the thermodynamic properties (stability and phase separation behavior) and total conductivity of prototype membrane materials. The data are needed together with the kinetic information to develop a complete model for the membrane transport. Previous report listed initial measurements on a sample of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-x} prepared in-house by Praxair. Subsequently, a second sample of powder from a larger batch of sample were characterized and compared with the results from the previous batch.

S. Bandopadhyay; N. Nagabhushana; Thomas W. Eagar; Harold R. Larson; Raymundo Arroyave; X.-D Zhou; Y.-W. Shin; H.U. Anderson; Nigel Browning; Alan Jacobson; C.A. Mims

2003-11-01T23:59:59.000Z

460

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, Moessbauer spectroscopy was used to study the local environmentals of LSFT with various level of oxygen deficiency. Ionic valence state, magnetic interaction and influence of Ti on superexchange are discussed Stable crack growth studies on Dense OTM bars provided by Praxair were done at elevated temperature, pressure and elevated conditions. Post-fracture X-ray data of the OTM fractured at 1000 C in environment were refined by FullProf code and results indicate a distortion of the parent cubic perovskite to orthorhombic structure with reduced symmetry. TGA-DTA studies on the post-fracture samples also indicated residual effect arising from the thermal and stress history of the samples. An electrochemical cell has been designed and built for measurements of the Seebeck coefficient as a function of temperature and pressure. The initial measurements on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} are reported. Neutron diffraction measurements of the same composition are in agreement with both the stoichiometry and the kinetic behavior observed in coulometric titration measurements. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The COCO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, in situ neutron diffraction was used to characterize the chemical and structural properties of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} (here after as L2SF55T) specimen, which was subject to measurements of neutron diffraction from room temperature to 900 C. It was found that space group of R3c yielded a better refinement than a cubic structure of Pm3m. Oxygen occupancy was nearly 3 in the region from room temperature to 700 C, above which the occupancy decreased due to oxygen loss. Dense OTM bars provided by Praxair were loaded to fracture at varying stress rates. Studies were done at room temperature in air and at 1000 C in a specified environment to evaluate slow crack growth behavior. The X-Ray data and fracture mechanisms points to non-equilibrium decomposition of the LSFCO OTM membrane. The non-equilibrium conditions could probably be due to the nature of the applied stress field (stressing rates) and leads to transition in crystal structures and increased kinetics of decomposition. The formations of a Brownmillerite or Sr2Fe2O5 type structures, which are orthorhombic are attributed to the ordering of oxygen vacancies. The cubic to orthorhombic transitions leads to 2.6% increase in strains and thus residual stresses generated could influence the fracture behavior of the OTM membrane. Continued investigations on the thermodynamic properties (stability and phase-separation behavior) and total conductivity of prototype membrane materials were carried out. The data are needed together with the kinetic information to develop a complete model for the membrane transport. Previously characterization, stoichiometry and conductivity measurements for samples of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} were reported. In this report, measurements of the chemical and thermal expansion as a function of temperature and p{sub O2} are described.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-05-01T23:59:59.000Z

462

High-temperature phase stability and tribological properties of laser clad Mo{sub 2}Ni{sub 3}Si/NiSi metal silicide coatings  

SciTech Connect (OSTI)

Mo{sub 2}Ni{sub 3}Si/NiSi wear-resistant metal silicide composite coatings consisting of Mo{sub 2}Ni{sub 3}Si primary dendrite and interdendritic Mo{sub 2}Ni{sub 3}Si/NiSi eutectic were fabricated on substrate of an austenitic stainless steel AISI321 by laser cladding using Ni-Mo-Si elemental powder blends. The high-temperature structural stability of the coating was evaluated by aging at 800 deg. C for 1-50 h. High-temperature sliding wear resistance of the as-laser clad and aged coatings was evaluated at 600 deg. C. Results indicate that the Mo{sub 2}Ni{sub 3}Si/NiSi metal silicides coating has excellent high temperature phase stability. No phase transformation except the dissolution of the eutectic Mo{sub 2}Ni{sub 3}Si and the corresponding growth of the Mo{sub 2}Ni{sub 3}Si primary dendrite and no elemental diffusion from the coating into the substrate were detected after aging the coating at 800 deg. C for 50 h. Aging of the coating at 800 deg. C leads to gradual dissolution of the interdendritic eutectic Mo{sub 2}Ni{sub 3}Si and subsequent formation of a dual-phase structure with equiaxed Mo{sub 2}Ni{sub 3}Si primary grains distributed in the NiSi single-phase matrix. Because of the strong covalent-dominated atomic bonds and high volume fraction of the ternary metal silicide Mo{sub 2}Ni{sub 3}Si, both the original and the aged Mo{sub 2}Ni{sub 3}Si/NiSi coating has excellent wear resistance under pin-on-disc high-temperature sliding wear test conditions, although hardness of the aged coating is slightly lower than that of the as-clad coating.

Lu, X.D. [Laboratory of Laser Materials Processing and Surface Engineering, School of Materials Science and Engineering, Beihang University (China); Wang, H.M. [Laboratory of Laser Materials Processing and Surface Engineering, School of Materials Science and Engineering, Beihang University (China)]. E-mail: wanghuaming@263.net

2004-10-18T23:59:59.000Z

463

The effect of carbon on the valence band offset of compressively strained Si1 x yGexCy/(100) Si heterojunctions  

E-Print Network [OSTI]

The effect of carbon on the valence band offset of compressively strained Si1 x yGexCy/(100) Si Capacitance­voltage measurements have been used to study the effect of carbon on the valence band offset with substitutional C levels from 0% to 2.5%. The valence band offset between Si1 x yGexCy and unstrained 100 Si

464

6522 J. Am. Chem. SOC.1986, 108, 6522-6529 Photoelectron Spectroscopy of SiH3-and SiD3-  

E-Print Network [OSTI]

- is found to be 94.5' while the value for the radical, SiH,, is 112.5'. Using the gas-phaseacidity of SiH4 questions about these early SiH3assignments. The chem- istry of silanes (and SiH, itself) in a fast flow reactor has been summarizedz6and a recent review of the photochemistry of silanes (1) Gaspar, P. P

Ellison, Barney

465

La France et l'Iran, des nations si lointaines et si proches 197 La France et l'Iran, des nations  

E-Print Network [OSTI]

La France et l'Iran, des nations si lointaines et si proches 197 La France et l'Iran, des nations si lointaines et si proches Le recteur Gérard-François DUMONT* La France et l'Iran apparaissent comme'autre. Pour les Français, comme sans doute pour les autres Européens, penser ce pays asiatique qu'est l'Iran

Paris-Sud XI, Université de

466

Institute of Transportation Studies Portland State University  

E-Print Network [OSTI]

Institute of Transportation Studies Portland State University November 2007 Transit's Dirty Little Director, UCLA Institute of Transportation Studies #12;Institute of Transportation Studies Transit of Transportation Studies Fewer than 40 trips per capita since 1965 Trend in Transit Ridership Per Capita 1900

Bertini, Robert L.

467

http://ctr.utk.edu transportation  

E-Print Network [OSTI]

http://ctr.utk.edu center for transportation research CenterforTransportationResearch 309Conference01-1301-012-002-06 DOP: 1/06 The National Transportation Research Center (NTRC), created by CTR valu- able contributions to the future of transportation. CTR is associated with the UT departments

Tennessee, University of

468

The Transportation Energy Data Book (TEDB)  

E-Print Network [OSTI]

The Transportation Energy Data Book (TEDB) The Transportation Energy Data Book (TEDB) is a compendium of data on transportation with an emphasis on energy. Designed for use as a desk- top reference Energy. Center for Transportation Analysis 2360 Cherahala Boulevard Knoxville, TN 37932 For more

469

Mass Transportation on surfaces Ludovic Rifford  

E-Print Network [OSTI]

Mass Transportation on surfaces Ludovic Rifford Universit´e de Nice - Sophia Antipolis Ludovic Rifford Mass Transportation on surfaces #12;Monge quadratic transport in Rn Let µ0 and µ1 be probability measures with compact support in Rn . We call transport map from µ0 to µ1 any measurable map T : Rn Rn

Rifford, Ludovic

470

Management and Safety of Transportation Systems  

E-Print Network [OSTI]

Management and Safety of Transportation Systems University Transportation Center for Alabama A N N@eng.ua.edu www.eng.ua.edu Editors: James Cruise, Ph.D. Barbara Moore University Transportation Center for Alabama Transportation Center for Alabama (UTCA). The contents of this Annual Report reflect the views of the editors

Carver, Jeffrey C.

471

Transportation Networks and Location A Geometric Approach  

E-Print Network [OSTI]

Transportation Networks and Location A Geometric Approach Belén Palop1,2 1Departamento de March 2009 Florida State University #12;Belén Palop, UVa, SUNY Outline Transportation Network Model;Transportation Network Model Belén Palop, UVa, SUNY Outline Transportation Network Model Network placement

Palop del Río, Belén

472

Mass Transportation on the Earth Ludovic Rifford  

E-Print Network [OSTI]

Mass Transportation on the Earth Ludovic Rifford Universit´e de Nice - Sophia Antipolis & Institut Universitaire de France UPV/EHU Ludovic Rifford Mass Transportation on the Earth #12;The framework Let M Rifford Mass Transportation on the Earth #12;Transport maps Let µ0 and µ1 be probability measures on M. We

Rifford, Ludovic

473

Quantitative photoacoustic imaging in radiative transport regime  

E-Print Network [OSTI]

, radiative transport equation, inverse transport problem, interior data, Born approximation, iterative is accurately modeled by the radiative transport equation which describes the distribution of photons . The radiative transport equation for photon density u(x, v) can then be written as [9, 11, 77]: v · u(x, v) + a

Ren, Kui

474

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES  

E-Print Network [OSTI]

PORTLAND STATE UNIVERSITY CENTER FOR TRANSPORTATION STUDIES DEPARTMENT OF CIVIL & ENVIRONMENTAL Transportation System Performance Report June, 2008 #12;2007 Portland Metropolitan Region Transportation System Performance Report Portland State University Center for Transportation Studies 2007 Table of Contents 12 29 36

Bertini, Robert L.

475

UNIVERSITY of HOUSTON Parking and Transportation Services  

E-Print Network [OSTI]

UNIVERSITY of HOUSTON Parking and Transportation Services Proposed FY14 and FY15 Parking Rates March ­ April Auxiliary Services Parking and Transportation Shared Governance Committee - Transportation of University of Houston parking and transportation programs. 2. To improve and maintain parking infrastructure

Bittner, Eric R.

476

Amarillo Metropolitan Transportation Plan 2010-2035  

E-Print Network [OSTI]

of historical data and are listed in Table 3.2. According to the Texas Workforce Commission employment by industry for the Amarillo Panhandle area (from 2000 to 2010) is AMARILLO METROPOLITAN TRANSPORTATION PLAN 2010-2035 15 projected to increase 15... amarillo metropolitan transportation plan 2010-2035 AMARILLO METROPOLITAN TRANSPORTATION PLAN 2010-2035 AMARILLO URBAN TRANSPORTATION STUDY AMARILLO METROPOLITAN...

Amarillo Metropolitan Planning Organization

2009-10-15T23:59:59.000Z

477

The Future of Low Carbon Transportation Fuels  

E-Print Network [OSTI]

" Nuclear" Oil resources" Unconventional:" oil shale liquid, " oil sands" Coal resources" Transport! Elec

Kammen, Daniel M.

478

The role of a LiF layer on the performance of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/Si organic-inorganic hybrid solar cells  

SciTech Connect (OSTI)

We report an ultra-thin layer of lithium fluoride (LiF) between silicon (Si) and aluminum (Al) in a Si/poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) hybrid solar cell which resulted in a power conversion efficiency (PCE) of 11.09%. The insertion of a thin layer of LiF improved the contact between Si and Al, which decreased the contact resistance from 5.4?×?10{sup ?1} ? cm{sup 2} to 2.6?×?10{sup ?2} ? cm{sup 2}. Also, the electron transport from Si to Al was improved and charge carrier recombination was suppressed. As a result, the short circuit current density, the open circuit voltage, and the fill factor were all improved with the presence of the LiF layer. The solar cell with the LiF/Al bilayer as a cathode displayed a 14.45% enhancement on PCE when compared with the device using pristine Al as a cathode.

Zhang, Yunfang [Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, 199 Ren'ai Road, Suzhou 215123 (China); Department of Mathematics and Physics, Jiangsu University of Science and Technology, Zhenjiang 212003 (China); Liu, Ruiyuan; Lee, Shuit-Tong; Sun, Baoquan, E-mail: bqsun@suda.edu.cn [Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM) and Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, 199 Ren'ai Road, Suzhou 215123 (China)

2014-02-24T23:59:59.000Z

479

On Techniques to Characterize and Correlate Grain Size, Grain Boundary Orientation and the Strength of the SiC Layer of TRISO Coated Particles: A Preliminary Study  

SciTech Connect (OSTI)

The mechanical properties of the silicon carbide (SiC) layer of the TRi-ISOtropic (TRISO) coated particle (CP) for high temperature gas reactors (HTGR) are performance parameters that have not yet been standardized by the international HTR community. Presented in this paper are the results of characterizing coated particles to reveal the effect of annealing temperature (1000 to 2100°C) on the strength and grain size of unirradiated coated particles. This work was further expanded to include possible relationships between the grain size and strength values. The comparative results of two strength measurement techniques and grain size measured by the Lineal intercept method are included. Preliminary grain boundary characterization results determined by electron backscatter diffraction (EBSD) are included. These results are also important for future fission product transport studies, as grain boundary diffusion is identified as a possible mechanism by which 110mAg, one of the fission activation products, might be released through intact SiC layers. Temperature is a parameter known to influence the grain size of SiC and therefore it is important to investigate the effect of high temperature annealing on the SiC grain size. Recommendations and future work will also be briefly discussed.

I.J.van Rooyen; J.L. Dunzik Gougar; T. Trowbridge; Philip M van Rooyen

2012-10-01T23:59:59.000Z

480

Transport equations in tokamak plasmas  

SciTech Connect (OSTI)

Tokamak plasma transport equations are usually obtained by flux surface averaging the collisional Braginskii equations. However, tokamak plasmas are not in collisional regimes. Also, ad hoc terms are added for neoclassical effects on the parallel Ohm's law, fluctuation-induced transport, heating, current-drive and flow sources and sinks, small magnetic field nonaxisymmetries, magnetic field transients, etc. A set of self-consistent second order in gyroradius fluid-moment-based transport equations for nearly axisymmetric tokamak plasmas has been developed using a kinetic-based approach. The derivation uses neoclassical-based parallel viscous force closures, and includes all the effects noted above. Plasma processes on successive time scales and constraints they impose are considered sequentially: compressional Alfven waves (Grad-Shafranov equilibrium, ion radial force balance), sound waves (pressure constant along field lines, incompressible flows within a flux surface), and collisions (electrons, parallel Ohm's law; ions, damping of poloidal flow). Radial particle fluxes are driven by the many second order in gyroradius toroidal angular torques on a plasma species: seven ambipolar collision-based ones (classical, neoclassical, etc.) and eight nonambipolar ones (fluctuation-induced, polarization flows from toroidal rotation transients, etc.). The plasma toroidal rotation equation results from setting to zero the net radial current induced by the nonambipolar fluxes. The radial particle flux consists of the collision-based intrinsically ambipolar fluxes plus the nonambipolar fluxes evaluated at the ambipolarity-enforcing toroidal plasma rotation (radial electric field). The energy transport equations do not involve an ambipolar constraint and hence are more directly obtained. The 'mean field' effects of microturbulence on the parallel Ohm's law, poloidal ion flow, particle fluxes, and toroidal momentum and energy transport are all included self-consistently. The final comprehensive equations describe radial transport of plasma toroidal rotation, and poloidal and toroidal magnetic fluxes, as well as the usual particle and energy transport.

Callen, J. D.; Hegna, C. C.; Cole, A. J. [University of Wisconsin, Madison, Wisconsin 53706-1609 (United States)

2010-05-15T23:59:59.000Z

Note: This page contains sample records for the topic "frv si transport" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Predicting Static Losses in an Inverter-Leg built with SiC Normally-Off JFETs and SiC diodes  

E-Print Network [OSTI]

Predicting Static Losses in an Inverter-Leg built with SiC Normally-Off JFETs and SiC diodes Xavier details the methodology of a method to calculate static losses in an inverter leg built with SiC Normally model with a constant current. The proposed method is applied to a three phase inverter to evaluate

Paris-Sud XI, Université de

482

Strained-Si1-xGex/Si Band-to-Band Tunneling Transistors: Impact of Tunnel-Junction Germanium Composition and Doping Concentration on Switching Behavior  

E-Print Network [OSTI]

Strained pseudomorphic Si/Si [subscript 1-x]Ge [subscript x]/Si gate-controlled band-to-band tunneling (BTBT) devices have been analyzed with varying Ge composition up to 57% and p+ tunnel-junction (source) doping concentration ...

Antoniadis, Dimitri A.

483

Bonding Structure of Phenylacetylene on Hydrogen-Terminated Si(111) and Si(100): Surface Photoelectron Spectroscopy Analysis and Ab Initio Calculations  

SciTech Connect (OSTI)

Interfaces between phenylacetylene (PA) monolayers and two silicon surfaces, Si(111) and Si(100), are probed by X-ray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), and near-edge X-ray absorption fine structure (NEXAFS) spectroscopy, and the results are analyzed using ab initio molecular orbital calculations. The monolayer systems are prepared via the surface hydrosilylation reaction between PA and hydrogen-terminated silicon surfaces. The following spectral features are obtained for both of the PA-Si(111) and PA-Si(100) systems: a broad {pi}-{pi}* shakeup peak at 292 eV (XPS), a broad first ionization peak at 3.8 eV (UPS), and a low-energy C 1s {yields} {pi}* resonance peak at 284.3 eV (NEXAFS). These findings are ascribed to a styrene-like {pi}-conjugated molecular structure at the PA-Si interface by comparing the experimental data with theoretical analysis results. A conclusion is drawn that the vinyl group can keep its {pi}-conjugation character on the hydrogen-terminated Si(100) [H:Si(100)] surface composed of the dihydride (SiH{sub 2}) groups as well as on hydrogen-terminated Si(111) having the monohydride (SiH) group. The formation mechanism of the PA-Si(100) interface is investigated within cluster ab initio calculations, and the possible structure of the H:Si(100) surface is discussed based on available data.

M Kondo; T Mates; D Fischer; F Wudl; E Kramer

2011-12-31T23:59:59.000Z

484

First-principles study of the interfacial adhesion between SiO2 and MoSi2 D. E. Jiang1 and Emily A. Carter2  

E-Print Network [OSTI]

the energy efficiency and per- formance of gas turbine engines requires structural materials able to operate on MoSi2, a potential high-temperature coating material for metals. This silica scale protects MoSi2 the potential of MoSi2 as a high-temperature structural material and coating. DOI: 10.1103/PhysRevB.72

Carter, Emily A.

485

Research on microwave joining of SiC  

SciTech Connect (OSTI)

Results: identification of optimum joining temperature range for reaction bonded Si carbide at 1420-1500 C; demonstration that specimens joined within this range have fracture roughness greater than as-received material; and demonstration of ability to use SiC formed in situ from the decomposition of polycarbosilane as a joining aid for sintered Si carbide. In the latter case, the interlayer material was also shown to fill any pores in the joining specimens near the interlayer. Together with the demonstration of leaktight joints between tube sections of reaction bonded and sintered SiC under the previous contract, these results provide the foundation for scaleup to joining of the larger and longer tubes needed for radiant burner and heat exchanger tube assemblies. The formation of SiC in situ is important because maintaining roundness of these large tubes is a technical challenge for the tube manufacturer, so that formation of a leaktight joint may require some degree of gap filling.

Silberglitt, R. [FM Technologies, Inc., Fairfax Station, VA (United States)

1995-07-31T23:59:59.000Z

486

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. Thermogravimetric analysis (TGA) was carried out on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} to investigate oxygen deficiency ({delta}) of the sample. The TGA was performed in a controlled atmosphere using oxygen, argon, carbon monoxide and carbon dioxide with adjustable gas flow rates. In this experiment, the weight loss and gain of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} was directly measured by TGA. The weight change of the sample was evaluated at between 600 and 1250 C in air or 1000 C as a function of oxygen partial pressure. The oxygen deficiencies calculated from TGA data as a function of oxygen activity and temperature will be estimated and compared with that from neutron diffraction measurement in air. The LSFT and LSFT/CGO membranes were fabricated from the powder obtained from Praxair Specialty Ceramics. The sintered membranes were subjected to microstructure analysis and hardness analysis. The LSFT membrane is composed of fine grains with two kinds of grain morphology. The grain size distribution was characterized using image analysis. In LSFT/CGO membrane a lot of grain pullout was observed from the less dense, porous phase. The hardness of the LSFT and dual phase membranes were studied at various loads. The hardness values obtained from the cross section of the membranes were also compared to that of the values obtained from the surface. An electrochemical cell has been designed and built for measurements of the Seebeck coefficient as a function of temperature and pressure. Measurements on La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} as a function of temperature an oxygen partial pressure are reported. Further analysis of the dilatometry data obtained previously is presented. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The CO-CO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; T. Nithyanantham; X.-D Zhou; Y-W. Sin; H.U. Anderson; Alan Jacobson; C.A. Mims

2005-02-01T23:59:59.000Z

487

Oxygen Transport Ceramic Membranes  

SciTech Connect (OSTI)

The present quarterly report describes some of the investigations on the structural properties of dense OTM bars provided by Praxair and studies on newer composition of Ti doped LSF. In this report, in situ neutron diffraction was used to characterize the chemical and structural properties of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} (here after as L2SF55T) specimen, which was subject to measurements of neutron diffraction from room temperature to 900 C in N{sub 2}. Space group of R3c was found to result in a better refinement and is used in this study. The difference for crystal structure, lattice parameters and local crystal chemistry for LSFT nearly unchanged when gas environment switched from air to N{sub 2}. Stable crack growth studies on Dense OTM bars provided by Praxair were done at room temperature in air. A bridge-compression fixture was fabricated to achieve stable pre-cracks from Vickers indents. Post fracture evaluation indicated stable crack growth from the indent and a regime of fast fracture. Post-fracture X-ray data of the OTM fractured at 1000 C in environment were refined by FullProf code and results indicate a distortion of the parent cubic perovskite to orthorhombic structure with reduced symmetry. TGA-DTA studies on the post-fracture samples also indicated residual effect arising from the thermal and stress history of the samples. The thermal and chemical expansion of La{sub 0.2}Sr{sub 0.8}Fe{sub 0.55}Ti{sub 0.45}O{sub 3-{delta}} were studied at 800 {le} T {le} 1000 C and at {approx} 1 x 10{sup -15} {le} pO{sub 2} {le} 0.21 atm. The thermal expansion coefficient of the sample was calculated from the dilatometric analysis in the temperature range between room temperature and 1200 C in air. A series of isotope transients under air separation mode (small gradient) were completed on the membrane of LSCrF-2828 at 900 C. Low pO{sub 2} atmospheres based on with CO-CO{sub 2} mixtures have also been admitted to the delivery side of the LSCrF-2828 membrane to produce the gradients which exist under syngas generation conditions. The CO-CO{sub 2} mixtures have normal isotopic {sup 18}O abundances. The evolution of {sup 18}O on the delivery side in these experiments after an {sup 18}O pulse on the air side reveals a wealth of information about the oxygen transport processes.

S. Bandopadhyay; N. Nagabhushana; X.-D Zhou; Q. Cai; J. Yang; W.B. Yelon; W.J. James; H.U. Anderson; Alan Jacobson; C.A. Mims

2004-05-01T23:59:59.000Z

488

Influence of Transport Variables on Isospin Transport Ratios  

E-Print Network [OSTI]

The symmetry energy in the nuclear equation of state affects many aspects of nuclear astrophysics, nuclear structure, and nuclear reactions. Recent constraints from heavy ion collisions, including isospin diffusion observables, have started to put constraints on the symmetry energy below nuclear saturation density, but these constraints depend on the employed transport model and input physics other than the symmetry energy. To understand these dependencies, we study the influence of the symmetry energy, isoscaler mean field compressibility and momentum dependence, in-medium nucleon-nucleon cross sections, and light cluster production on isospin diffusion within the pBUU transport code. In addition to the symmetry energy, several uncertain issues strongly affect isospin diffusion, most notably the cross sections and cluster production. In addition, there is a difference in the calculated isospin transport ratios, depending upon whether they are computed using the isospin asymmetry of either the residue or of a...

Coupland, D D S; Tsang, M B; Danielewicz, P; Zhang, Yingxun

2011-01-01T23:59:59.000Z

489

Transportation Planning & Decision Science Group Transportation Systems Research Group Diane Davidson Keith Kahl  

E-Print Network [OSTI]

Transportation Planning & Decision Science Group Transportation Systems Research Group Diane Davidson Keith Kahl 865-946-1475 865-946-1236 Center for Transportation Analysis News Oak Ridge National to members of the Kentucky Transportation Cabinet and the Kentucky Transportation Center. The purpose

490

Red Fluorescent Protein pH Biosensor to Detect Concentrative Nucleoside Transport*S  

E-Print Network [OSTI]

Red Fluorescent Protein pH Biosensor to Detect Concentrative Nucleoside Transport*S Received concentrative nucleoside transporter, hCNT3, medi- ates Na /nucleoside and H /nucleoside co-transport. We describe a new approach to monitor H /uridine co-transport in cultured mammalian cells, using a p

Campbell, Robert E.

491

Texarkana Urban Transportation Study 2035 Metropolitan Transportation Plan  

E-Print Network [OSTI]

This page intentionally left blank. TUTS 2035 PLAN i October 1, 2009 TABLE OF CONTENTS 1 INTRODUCTION 4 OPERATIONS & MANAGEMENT What is the MPO? 1-1 O&M Goals 4-2 What does the MPO do? 1-1 O&M Strategies 4-2 Challenges...-7 TUTS 2035 PLAN ii October 1, 2009 7 PUBLIC TRANSPORTATION Amtrak-Passenger Rail Service 7-1 Texarkana Regional Airport 7-2 Greyhound Intercity Bus Service 7-4 Texarkana Urban Transit District Public Transportation 7-4 TRAX ? Rural Public...

Texarkana Metropolitan Planning Organization

2009-10-01T23:59:59.000Z

492

Validation of Heavy Ion Transport Capabilities in PHITS  

SciTech Connect (OSTI)

The performance of the Monte Carlo code system PHITS is validated for heavy ion transport capabilities by performing simulations and comparing results against experimental data from heavy ion reactions of benchmark quality. These data are from measurements of secondary neutron production cross sections in reactions of Xe at 400 MeV/u with lithium and lead targets, measurements of neutrons outside of thick concrete and iron shields, and measurements of isotope yields produced in the fragmentation of a 140 MeV/u 48Ca beam on a beryllium target and on a tantalum target. A practical example that tests magnetic field capabilities is shown for a simulated 48Ca beam at 500 MeV/u striking a lithium target to produce the rare isotope 44Si, with ion transport through a fragmentation-reaction magnetic pre-separator. The results of this study show that PHITS performs reliably for the simulation of radiation fields that is necessary for designing safe, reliable and cost effective future high-powered heavy-ion accelerators in rare isotope beam facilities.

Ronningen, Reginald M. [National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824-1321 (United States)

2007-03-19T23:59:59.000Z

493

Atlantic Coastal Experiment III: R/V KNORR cruise 68, 4-30 August 1977; FRV ALBATROSS IV cruise 77-07, 1-4, 16-31 August 1977. Data report, volume 1  

SciTech Connect (OSTI)

Data are reported from KNORR cruise 68, the major investigation of the third Atlantic Coastal Experiment (ACE), conducted during a period of pro-nounced water-column stratification. One hundred fifty-five stations, including 6 time-series sitings, were occupied within the shelf and shelf- break regimes of New York Bight. Measurements were made to assess water-mass characterization, nutrient cycling, carbon/nitrogen assimilation, bio-mass distribution and diel dynamics and benthic/water-column interfacial exchange. Data are also included from the cruise of ALBATROSS IV carried out contemporaneously with the KNORR investigations, in an area ranging from Nantucket Shoals to the upper reaches of the Gulf of Maine. 20 hydrographic stations were used to augment underway mapping in order to elucidate surface-layer chlorophyll and nutrient distributions occurring at an impor-tant boundary of the New York Bight.

Judkins, D.C.; von Bock, K.

1983-03-01T23:59:59.000Z

494

Intermixing between HfO{sub 2} and GeO{sub 2} films deposited on Ge(001) and Si(001): Role of the substrate  

SciTech Connect (OSTI)

Thermally driven atomic transport in HfO{sub 2}/GeO{sub 2}/substrate structures on Ge(001) and Si(001) was investigated in N{sub 2} ambient as function of annealing temperature and time. As-deposited stacks showed no detectable intermixing and no instabilities were observed on Si. On Ge, loss of O and Ge was detected in all annealed samples, presumably due to evolution of GeO from the GeO{sub 2}/Ge interface. In addition, hafnium germanate is formed at 600 deg. C. Our data indicate that at 500 deg. C and above HfO{sub 2}/GeO{sub 2} stacks are stable only if isolated from the Ge substrate.

Soares, G. V.; Krug, C. [Instituto de Fisica, UFRGS, Porto Alegre, Rio Grande do Sul 91509-900 (Brazil); Miotti, L.; Bastos, K. P.; Lucovsky, G. [Department of Physics, North Carolina State University, Raleigh, North Carolina 27695 (United States); Baumvol, I. J. R. [Instituto de Fisica, UFRGS, Porto Alegre, Rio Grande do Sul 91509-900 (Brazil); Universidade de Caxias do Sul, Caxias do Sul, Rio Grande do Sul 95070-560 (Brazil); Radtke, C. [Instituto de Quimica, UFRGS, Porto Alegre, Rio Grande do Sul 91509-900 (Brazil)

2011-03-28T23:59:59.000Z

495

Joining SI3N4 for Advanced Turbomachinery Applications  

SciTech Connect (OSTI)

The main objective of this project was to develop reliable, low-cost techniques for joining silicon nitride (Si{sub 3}N{sub 4}) to itself and to metals. For Si{sub 3}N{sub 4} to be widely used in advanced turbomachinery applications, joining techniques must be developed that are reliable, cost-effective, and manufacturable. This project addressed those needs by developing and testing two Si{sub 3}N{sub 4} joining systems; oxynitride glass joining materials and high temperature braze alloys. Extensive measurements were also made of the mechanical properties and oxidation resistance of the braze materials. Finite element models were used to predict the magnitudes and positions of the stresses in the ceramic regions of ceramic-to-metal joints sleeve and butt joints, similar to the geometries used for stator assemblies.

GLASS, S. JILL; LOEHMAN, RONALD E.; HOSKING, F. MICHAEL; STEPHENS JR., JOHN J.; VIANCO, PAUL T.; NEILSEN, MICHAEL K.; WALKER, CHARLES A.; POLLINGER, J.P.; MAHONEY, F.M.; QUILLEN, B.G.

2000-07-01T23:59:59.000Z

496

Silicon (100)/SiO2 by XPS  

SciTech Connect (OSTI)

Silicon (100) wafers are ubiquitous in microfabrication and, accordingly, their surface characteristics are important. Herein, we report the analysis of Si (100) via X-ray photoelectron spectroscopy (XPS) using monochromatic Al K radiation. Survey scans show that the material is primarily silicon and oxygen, and the Si 2p region shows two peaks that correspond to elemental silicon and silicon dioxide. Using these peaks the thickness of the native oxide (SiO2) was estimated using the equation of Strohmeier.1 The oxygen peak is symmetric. The material shows small amounts of carbon, fluorine, and nitrogen contamination. These silicon wafers are used as the base material for subsequent growth of templated carbon nanotubes.

Jensen, David S.; Kanyal, Supriya S.; Madaan, Nitesh; Vail, Michael A.; Dadson, Andrew; Engelhard, Mark H.; Linford, Matthew R.

2013-09-25T23:59:59.000Z

497

The precipitation sequence in Al-Mg-Si alloys  

SciTech Connect (OSTI)

Fine-scale precipitation that occurs during age hardening of Al alloy 6061 has been studied using differential scanning calorimetry (DSC), atom probe field ion microscopy (APFIM) and transmission electron microscopy (TEM). It was found that the precipitation sequence is: independent clusters of Mg and Si atoms {yields} co-clusters that contain Mg and Si atoms {yields} small precipitates of unknown structure {yields} {beta}{double_prime} needle-shaped precipitates {yields} B{prime} lath-shaped precipitates and {beta}{prime} rod-shaped precipitates. A new structure is proposed for the {beta}{double_prime} precipitate. It was found that the Mg:Si ratio in the intermediate precipitates and co-clusters was close to 1:1.

Edwards, G.A.; Dunlop, G.L. [Univ. of Queensland, Brisbane, Queensland (Australia)] [Univ. of Queensland, Brisbane, Queensland (Australia); Stiller, K. [Chalmers Univ. of Technology, Gothenburg (Sweden)] [Chalmers Univ. of Technology, Gothenburg (Sweden); Couper, M.J. [Comalco Research Centre, Thomastown, Victoria (Australia)] [Comalco Research Centre, Thomastown, Victoria (Australia)

1998-07-01T23:59:59.000Z

498

Studying the magnetic properties of CoSi single crystals  

SciTech Connect (OSTI)

The magnetic properties of CoSi single crystals have been measured in a range of temperatures T = 5.5-450 K and magnetic field strengths H {<=} 11 kOe. A comparison of the results for crystals grown in various laboratories allowed the temperature dependence of magnetic susceptibility {chi}(T) = M(T)/H to be determined for a hypothetical 'ideal' (free of magnetic impurities and defects) CoSi crystal. The susceptibility of this ideal crystal in the entire temperature range exhibits a diamagnetic character. The {chi}(T) value significantly increases in absolute value with decreasing temperature and exhibits saturation at the lowest temperatures studied. For real CoSi crystals of four types, paramagnetic contributions to the susceptibility have been evaluated and nonlinear (with respect to the field) contributions to the magnetization have been separated and taken into account in the calculations of {chi}(T).

Narozhnyi, V. N., E-mail: narozhnyivn@gmail.com; Krasnorussky, V. N. [Russian Academy of Sciences, Vereshchagin Institute for High Pressure Physics (Russian Federation)

2013-05-15T23:59:59.000Z

499

Unraveling siRNA Unzipping Kinetics with Graphene  

E-Print Network [OSTI]

Using all atom molecular dynamics simulations, we report spontaneous unzipping and strong binding of small interfering RNA (siRNA) on graphene. Our dispersion corrected density functional theory based calculations suggest that nucleosides of RNA have stronger attractive interactions with graphene as compared to DNA residues. These stronger interactions force the double stranded siRNA to spontaneously unzip and bind to the graphene surface. Unzipping always nucleates at one end of the siRNA and propagates to the other end after few base-pairs get unzipped. While both the ends get unzipped, the middle part remains in double stranded form because of torsional constraint. Unzipping probability distributions fitted to single exponential function give unzipping time (t) of the order of few nanoseconds which decrease exponentially with temperature. From the temperature variation of unzipping time we estimate the energy barrier to unzipping.

Santosh Mogurampelly; Swati Panigrahi; Dhananjay Bhattacharyya; A. K. Sood; Prabal K. Maiti

2012-07-19T23:59:59.000Z

500

Modeling of implantation and mixing damage during etching of SiO{sub 2} over Si in fluorocarbon plasmas  

SciTech Connect (OSTI)

Energetic ion bombardment during plasma etching of microelectronics devices is necessary to activate chemical process and define features through the ions' anisotropic trajectories. These energetic fluxes can also cause damage and mixing of the constituents of crystalline lattices. These properties are likely best modeled using molecular dynamics (MD) simulations. The computational expense of these techniques makes feature scale simulations difficult, and so motivates development of approximate methods that can be used to model full features. In this regard, an implantation and mixing model has been developed and implemented into a Monte Carlo feature profile model to simulate the mixing and damage to the underlying Si during high aspect ratio (HAR) etching of SiO{sub 2} trenches. Fluxes to the surface were provided by a reactor scale model. The feature scale model was validated by comparison to the mixing produced by Ar{sup +} bombardment of Si with and without F and CF fluxes as predicted by MD simulations. Scaling of mixing damage of underlying Si during HAR of SiO{sub 2} etching in Ar/C{sub 4}F{sub 8}/O{sub 2} plasmas for rf bias powers of 1-4 kW was investigated. The authors found that mixing damage at the bottom of HAR features, though increasing in magnitude with increasing ion energy, does not scale as dramatically as on flat surfaces. This is due to the reflection of ions off of sidewalls which moderate the ion energies.

Wang Mingmei; Kushner, Mark J. [Department of Chemical and Biological Engineering, Iowa State University, Ames, Iowa 50010 (United States); Department of Electrical Engineering and Computer Science, University of Michigan, 1301 Beal Ave., Ann Arbor, Michigan 48109 (United States)

2011-09-15T23:59:59.000Z