National Library of Energy BETA

Sample records for ds cu ag

  1. High heat flux testing of HIP bonded DS-Cu/316SS first wall panel for fusion experimental reactors

    SciTech Connect (OSTI)

    Hatano, Toshihisa; Sato, Kazuyoshi; Dairaku, Masayuki

    1996-12-31

    A shielding blanket design in a fusion reactor such as ITER has been proposed to be a modulator structure integrated with the first wall. In terms of the fabrication, HIP (Hot Isostatic Pressing) method has been proposed for the joining of dispersion strengthened copper (DS-Cu) and type 316L stainless steel (SS316L) at FW. High heat flux tests of HIP bonded DS-Cu/SS316L first wall panel were performed at particle Beam Engineering Facility in JAERI to investigate its thermo-mechanical performance. After four campaigns of high heat flux testing, the FW panel was cut to observe the HIP bonded interface and heated surface of DS-Cu. Though melting of DS-Cu surface was observed, there were no cracks at the HIP bonded interface. 2 refs., 11 figs., 1 tab.

  2. Pb-free Sn-Ag-Cu ternary eutectic solder

    DOE Patents [OSTI]

    Anderson, Iver E.; Yost, Frederick G.; Smith, John F.; Miller, Chad M.; Terpstra, Robert L.

    1996-06-18

    A Pb-free solder includes a ternary eutectic composition consisting essentially of about 93.6 weight % Sn-about 4.7 weight % Ag-about 1.7 weight % Cu having a eutectic melting temperature of about 217.degree. C. and variants of the ternary composition wherein the relative concentrations of Sn, Ag, and Cu deviate from the ternary eutectic composition to provide a controlled melting temperature range (liquid-solid "mushy" zone) relative to the eutectic melting temperature (e.g. up to 15.degree. C. above the eutectic melting temperature).

  3. Pb-free Sn-Ag-Cu ternary eutectic solder

    DOE Patents [OSTI]

    Anderson, I.E.; Yost, F.G.; Smith, J.F.; Miller, C.M.; Terpstra, R.L.

    1996-06-18

    A Pb-free solder includes a ternary eutectic composition consisting essentially of about 93.6 weight % Sn-about 4.7 weight % Ag-about 1.7 weight % Cu having a eutectic melting temperature of about 217 C and variants of the ternary composition wherein the relative concentrations of Sn, Ag, and Cu deviate from the ternary eutectic composition to provide a controlled melting temperature range (liquid-solid ``mushy`` zone) relative to the eutectic melting temperature (e.g. up to 15 C above the eutectic melting temperature). 5 figs.

  4. Origin of Novel Diffusions of Cu and Ag in Semiconductors: The...

    Office of Scientific and Technical Information (OSTI)

    Origin of Novel Diffusions of Cu and Ag in Semiconductors: The Case of CdTe Prev Next Title: Origin of Novel Diffusions of Cu and Ag in Semiconductors: The Case of CdTe ...

  5. Characterization and device performance of (AgCu)(InGa)Se2 absorber layers

    SciTech Connect (OSTI)

    Hanket, Gregory; Boyle, Jonathan H.; Shafarman, William N.

    2009-06-08

    The study of (AgCu)(InGa)Se2 absorber layers is of interest in that Ag-chalcopyrites exhibit both wider bandgaps and lower melting points than their Cu counterparts. (AgCu)(InGa)Se2 absorber layers were deposited over the composition range 0 < Ag/(Ag+Cu) < 1 and 0.3 < Ga/(In+Ga) < 1.0 using a variety of elemental co-evaporation processes. Films were found to be singlephase over the entire composition range, in contrast to prior studies. Devices with Ga content 0.3 < Ga/(In+Ga) <0.5 tolerated Ag incorporation up to Ag/(Ag+Cu) = 0.5 without appreciable performance loss. Ag-containing films with Ga/(In+Ga) = 0.8 showed improved device characteristics over Cu-only control samples, in particular a 30-40% increase in short-circuit current. An absorber layer with composition Ag/(Ag+Cu) = 0.75 and Ga/(In+Ga) = 0.8 yielded a device with VOC = 890 mV, JSC = 20.5mA/cm2, fill factor = 71.3%, and ? = 13.0%.

  6. Optical and quantum efficiency analysis of (Ag,Cu)(In,Ga)Se2 absorber layers

    SciTech Connect (OSTI)

    Boyle, Jonathan; Hanket, Gregory; Shafarman, William

    2009-06-09

    (Ag,Cu)(In,Ga)Se2 thin films have been deposited by elemental co-evaporation over a wide range of compositions and their optical properties characterized by transmission and reflection measurements and by relative shift analysis of quantum efficiency device measurements. The optical bandgaps were determined by performing linear fits of (?h?)2 vs. h?, and the quantum efficiency bandgaps were determined by relative shift analysis of device curves with fixed Ga/(In+Ga) composition, but varying Ag/(Cu+Ag) composition. The determined experimental optical bandgap ranges of the Ga/(In+Ga) = 0.31, 0.52, and 0.82 groups, with Ag/(Cu+Ag) ranging from 0 to 1, were 1.19-1.45 eV, 1.32-1.56 eV, and 1.52-1.76 eV, respectively. The optical bowing parameter of the different Ga/(In+Ga) groups was also determined.

  7. Synthesis and anti-bacterial activity of Cu, Ag and Cu-Ag alloy nanoparticles: A green approach

    SciTech Connect (OSTI)

    Valodkar, Mayur; Modi, Shefaly; Pal, Angshuman; Thakore, Sonal

    2011-03-15

    Research highlights: {yields} Synthesis of novel nanosized copper-silver alloys of different compositions. {yields} Completely green approach for synthesis of water soluble bimetallic nanoparticle. {yields} Interesting anti-bacterial activity of as synthesized metal and alloy nanoparticle. -- Abstract: Metallic and bimetallic nanoparticles of copper and silver in various proportions were prepared by microwave assisted chemical reduction in aqueous medium using the biopolymer, starch as a stabilizing agent. Ascorbic acid was used as the reducing agent. The silver and copper nanoparticles exhibited surface plasmon absorption resonance maxima (SPR) at 416 and 584 nm, respectively; while SPR for the Cu-Ag alloys appeared in between depending on the alloy composition. The SPR maxima for bimetallic nanoparticles changes linearly with increasing copper content in the alloy. Transmission electron micrograph (TEM) showed monodispersed particles in the range of 20 {+-} 5 nm size. Both silver and copper nanoparticles exhibited emission band at 485 and 645 nm, respectively. The starch-stabilized nanoparticles exhibited interesting antibacterial activity with both gram positive and gram negative bacteria at micromolar concentrations.

  8. Energetics of the formation of CuAg coreshell nanoparticles

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

    Chandross, Michael

    2014-10-06

    Our work presents molecular dynamics and Monte Carlo simulations aimed at developing an understanding of the formation of coreshell CuAg nanoparticles. The effects of surface and interfacial energies were considered and used to form a phenomenological model that calculates the energy gained upon the formation of a coreshell structure from two previously distinct, non-interacting nanoparticles. In most cases, the coreshell structure was found to be energetically favored. Specifically, the difference in energy as a function of the radii of the individual Cu and Ag particles was examined, with the assumption that a coreshell structure forms. In general, it was foundmorethat the energetic gain from forming such a structure increased with increasing size of the initial Ag particle. This result was interpreted as a result of the reduction in surface energy. Moreover, for two separate particles, both Cu and Ag contribute to the surface energy; however, for a coreshell structure, the only contribution to the surface energy is from the Ag shell and the Cu contribution is changed to a CuAg interfacial energy, which is always smaller.less

  9. Atomic-scale investigation of interface-facilitated deformation twinning in severely deformed Ag-Cu nanolamellar composites

    SciTech Connect (OSTI)

    An, X. H. E-mail: xiaozhou.liao@sydenye.edu.au; Cao, Y.; Liao, X. Z. E-mail: xiaozhou.liao@sydenye.edu.au; Zhu, S. M.; Nie, J. F.; Kawasaki, M.; Ringer, S. P.; Langdon, T. G.; Zhu, Y. T.

    2015-07-06

    We report an atomic-scale investigation of interface-facilitated deformation twinning behaviour in Ag-Cu nanolamellar composites. Profuse twinning activities in Ag supply partial dislocations to directly transmit across the Ag-Cu lamellar interface that promotes deformation twinning in the neighbouring Cu lamellae although the interface is severely deformed. The trans-interface twin bands change the local structure at the interface. Our analysis suggests that the orientation relationship and interfacial structure between neighbouring Ag-Cu lamellae play a crucial role in such special interface-facilitated twinning behaviour.

  10. Energetics of the formation of Cu-Ag core–shell nanoparticles

    SciTech Connect (OSTI)

    Chandross, Michael

    2014-10-06

    Our work presents molecular dynamics and Monte Carlo simulations aimed at developing an understanding of the formation of core–shell Cu-Ag nanoparticles. The effects of surface and interfacial energies were considered and used to form a phenomenological model that calculates the energy gained upon the formation of a core–shell structure from two previously distinct, non-interacting nanoparticles. In most cases, the core–shell structure was found to be energetically favored. Specifically, the difference in energy as a function of the radii of the individual Cu and Ag particles was examined, with the assumption that a core–shell structure forms. In general, it was found that the energetic gain from forming such a structure increased with increasing size of the initial Ag particle. This result was interpreted as a result of the reduction in surface energy. Moreover, for two separate particles, both Cu and Ag contribute to the surface energy; however, for a core–shell structure, the only contribution to the surface energy is from the Ag shell and the Cu contribution is changed to a Cu–Ag interfacial energy, which is always smaller.

  11. Energetics of the formation of Cu-Ag core–shell nanoparticles

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

    Chandross, Michael

    2014-10-06

    Our work presents molecular dynamics and Monte Carlo simulations aimed at developing an understanding of the formation of core–shell Cu-Ag nanoparticles. The effects of surface and interfacial energies were considered and used to form a phenomenological model that calculates the energy gained upon the formation of a core–shell structure from two previously distinct, non-interacting nanoparticles. In most cases, the core–shell structure was found to be energetically favored. Specifically, the difference in energy as a function of the radii of the individual Cu and Ag particles was examined, with the assumption that a core–shell structure forms. In general, it was foundmore » that the energetic gain from forming such a structure increased with increasing size of the initial Ag particle. This result was interpreted as a result of the reduction in surface energy. Moreover, for two separate particles, both Cu and Ag contribute to the surface energy; however, for a core–shell structure, the only contribution to the surface energy is from the Ag shell and the Cu contribution is changed to a Cu–Ag interfacial energy, which is always smaller.« less

  12. Potential energy curves for the ground and low-lying excited states of CuAg

    SciTech Connect (OSTI)

    Alizadeh, Davood; Shayesteh, Alireza E-mail: ashayesteh@ut.ac.ir; Jamshidi, Zahra E-mail: ashayesteh@ut.ac.ir

    2014-10-21

    The ground and low-lying excited states of heteronuclear diatomic CuAg are examined by multi-reference configuration interaction (MRCI) method. Relativistic effects were treated and probed in two steps. Scalar terms were considered using the spin-free DKH Hamiltonian as a priori and spin-orbit coupling was calculated perturbatively via the spin-orbit terms of the Breit-Pauli Hamiltonian based on MRCI wavefunctions. Potential energy curves of the spin-free states and their corresponding Ω components correlating with the separated atom limits {sup 2}S(Cu) + {sup 2}S(Ag) and {sup 2}D(Cu) + {sup 2}S(Ag) are obtained. The results are in fine agreement with the experimental measurements and tentative conclusions for the ion-pair B0{sup +} state are confirmed by our theoretical calculations. Illustrative results are presented to reveal the relative importance and magnitude of the scalar and spin-orbit effects on the spectroscopic properties of this molecule. Time dependent density functional theory calculations, using the LDA, BLYP, B3LYP, and SAOP functionals have been carried out for CuAg and the accuracy of TD-DFT has been compared with ab initio results.

  13. Size and alloying induced shift in core and valence bands of Pd-Ag and Pd-Cu nanoparticles

    SciTech Connect (OSTI)

    Sengar, Saurabh K.; Mehta, B. R.; Govind

    2014-03-28

    In this report, X-ray photoelectron spectroscopy studies have been carried out on Pd, Ag, Cu, Pd-Ag, and Pd-Cu nanoparticles having identical sizes corresponding to mobility equivalent diameters of 60, 40, and 20 nm. The nanoparticles were prepared by the gas phase synthesis method. The effect of size on valence and core levels in metal and alloy nanoparticles has been studied by comparing the values to those with the 60 nm nanoparticles. The effect of alloying has been investigated by comparing the valence and core level binding energies of Pd-Cu and Pd-Ag alloy nanoparticles with the corresponding values for Pd, Ag, and Cu nanoparticles of identical sizes. These effects have been explained in terms of size induced lattice contractions, alloying induced charge transfer, and hybridization effects. The observation of alloying and size induced binding energy shifts in bimetallic nanoparticles is important from the point of view of hydrogen reactivity.

  14. Ag-Pd-Cu alloy inserted transparent indium tin oxide electrodes for organic solar cells

    SciTech Connect (OSTI)

    Kim, Hyo-Joong; Seo, Ki-Won; Kim, Han-Ki; Noh, Yong-Jin; Na, Seok-In

    2014-09-01

    The authors report on the characteristics of Ag-Pd-Cu (APC) alloy-inserted indium tin oxide (ITO) films sputtered on a glass substrate at room temperature for application as transparent anodes in organic solar cells (OSCs). The effect of the APC interlayer thickness on the electrical, optical, structural, and morphological properties of the ITO/APC/ITO multilayer were investigated and compared to those of ITO/Ag/ITO multilayer electrodes. At the optimized APC thickness of 8 nm, the ITO/APC/ITO multilayer exhibited a resistivity of 8.55 × 10{sup −5} Ω cm, an optical transmittance of 82.63%, and a figure-of-merit value of 13.54 × 10{sup −3} Ω{sup −1}, comparable to those of the ITO/Ag/ITO multilayer. Unlike the ITO/Ag/ITO multilayer, agglomeration of the metal interlayer was effectively relieved with APC interlayer due to existence of Pd and Cu elements in the thin region of the APC interlayer. The OSCs fabricated on the ITO/APC/ITO multilayer showed higher power conversion efficiency than that of OSCs prepared on the ITO/Ag/ITO multilayer below 10 nm due to the flatness of the APC layer. The improved performance of the OSCs with ITO/APC/ITO multilayer electrodes indicates that the APC alloy interlayer prevents the agglomeration of the Ag-based metal interlayer and can decrease the thickness of the metal interlayer in the oxide-metal-oxide multilayer of high-performance OSCs.

  15. Photocatalytic performances and activities of Ag-doped CuFe{sub 2}O{sub 4} nanoparticles

    SciTech Connect (OSTI)

    Zhu, Zhengru; Li, Xinyong; Zhao, Qidong; Li, Yonghua; Sun, Caizhi; Cao, Yongqiang

    2013-08-01

    Graphical abstract: - Highlights: CuFe{sub 2}O{sub 4} nanocrystals were synthesized by a co-precipitation method. Ag/CuFe{sub 2}O{sub 4} catalyst was prepared by the wetness impregnation strategy. The structural properties of Ag/CuFe{sub 2}O{sub 4} were investigated by XRD, TEM, DRS, and XPS techniques. Ag/CuFe{sub 2}O{sub 4} has higher photocatalytic activity. - Abstract: In this work, CuFe{sub 2}O{sub 4} nanoparticles were synthesized by a chemical co-precipitation route. The Ag/CuFe{sub 2}O{sub 4} catalyst was prepared based on the CuFe{sub 2}O{sub 4} nanoparticles by the incipient wetness impregnation strategy, which showed excellent photoelectric property and catalytic activity. The structural properties of these samples were systematically investigated by X-ray powder diffraction (XRD), transmission electronic microscopy (TEM), UVvis diffuse reflectance spectroscopy (DRS), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FT-IR) techniques. The photo-induced charge separation in the samples was demonstrated by surface photovoltage (SPV) measurement. The photocatalytic degradation of 4-CP by the Ag/CuFe{sub 2}O{sub 4} and CuFe{sub 2}O{sub 4} samples were comparatively studied under xenon lamp irradiation. The results indicate that the Ag/CuFe{sub 2}O{sub 4} sample exhibited the higher efficiency for the degradation of 4-CP.

  16. Effect of cooling rate on the microstructure and microhardness of the CuZrAgAl alloy

    SciTech Connect (OSTI)

    Liu, Y.; Blandin, J.J.; Suery, M.; Kapelski, G.

    2012-08-15

    The effect of cooling rate on the microstructure and microhardness of the Cu{sub 40}Zr{sub 44}Ag{sub 8}Al{sub 8} (at.%) alloy has been studied. The crystalline phases were characterized by X-ray diffraction, optical microscopy and scanning electron microscopy with energy dispersive X-ray spectroscopy, and identified as AlCu{sub 2}Zr, Cu{sub 10}Zr{sub 7} and CuZr{sub 2}. The solidification sequence was established as following: the Cu{sub 10}Zr{sub 7} phase forms first in the periphery of the rod, then following with AlCu{sub 2}Zr phase in the rod center and finally CuZr{sub 2} crystals in Cu-depleted areas. The effect of crystals on the mechanical properties of the Cu{sub 40}Zr{sub 44}Ag{sub 8}Al{sub 8} alloy was also estimated through the microhardness. According to the value of microhardness, inhomogeneous structure of the amorphous matrix is more easily formed for the alloy in the low cooling rate (i.e., 9 mm) as compared with the alloy with fully amorphous state in the large cooling rate (i.e., 3 mm). This inhomogeneous structure was attributed to the composition change of amorphous matrix arising from the forming of crystalline phases due to the low cooling rate. - Highlights: Black-Right-Pointing-Pointer The crystalline phases in the Cu{sub 40}Zr{sub 44}Ag{sub 8}Al{sub 8} alloy were identified. Black-Right-Pointing-Pointer The solidification sequence of Cu{sub 40}Zr{sub 44}Ag{sub 8}Al{sub 8} alloy was verified. Black-Right-Pointing-Pointer The softening and hardening of alloy could be observed due to the crystallization.

  17. Enhanced hydrogenation and reduced lattice distortion in size selected Pd-Ag and Pd-Cu alloy nanoparticles

    SciTech Connect (OSTI)

    Sengar, Saurabh K.; Mehta, B. R.; Kulriya, P. K.; Khan, S. A.

    2013-10-21

    Important correlation between valence band spectra and hydrogenation properties in Pd alloy nanoparticles is established by studying the properties of size selected and monocrystalline Pd, Ag, Cu, Pd-Ag, and Pd-Cu nanoparticles. The X-ray photoelectron spectroscopy and elastic recoil detection analysis show that size induced Pd4d centroid shift is related to enhanced hydrogenation with H/Pd ratio of 0.57 and 0.49 in Pd-Ag and Pd-Cu nanoparticles in comparison to reported bulk values of 0.2 and 0.1, respectively. Pd-alloy nanoparticles show lower hydrogen induced lattice distortion. The reduced distortion and higher hydrogen reactivity of Pd-alloy nanoparticles is important for numerous hydrogen related applications.

  18. Effect of filler metal composition on the strength of yttria stabilized zirconia joints brazed with Pd-Ag-CuOx

    SciTech Connect (OSTI)

    Darsell, Jens T.; Weil, K. Scott

    2008-09-08

    The Ag-CuOx system is of interest to be used to be used as an air braze filler metal for joining high temperature electrochemical devices. Previous work has shown that the melting temperatures can be increased by adding palladium to Ag-CuOx and it is expected that this may aid high temperature stability. This work compares the room temperature bend strength of joints made between yttria-stabilized zirconia (YSZ) air brazed using Ag-CuOx without palladium and with 5 and 15mol% palladium additions. It has been found that in general palladium decreases joint strength, especially in low copper oxide compositions filler metals. At high copper oxide contents, brittle fracture through both copper oxide rich phases and the YSZ limits joint strength.

  19. Structural and magnetic phase transitions in CeCu6-xTx (T = Ag,Pd)

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

    Poudel, Lekhanath N.; De la cruz, Clarina; Payzant, E. Andrew; Koehler, Michael R.; May, Andrew F.; Garlea, Vasile O.; Taylor, Alice E.; Parker, David S.; Cao, Huibo B.; McGuire, Michael A.; et al

    2015-12-15

    The structural and the magnetic properties of CeCu6-xAgx (0 ≤ x ≤ 0.85) and CeCu6-xPdx (0 ≤ x ≤ 0.4) have been studied using neutron diffraction, resonant ultrasound spectroscopy (RUS), x-ray diffraction measurements, and first principles calculations. The structural and magnetic phase diagrams of CeCu6-xAgx and CeCu6-xPdx as a function of Ag/Pd composition are reported. The end member, CeCu6, undergoes a structural phase transition from an orthorhombic (Pnma) to a monoclinic (P21/c) phase at 240 K. In CeCu6-xAgx, the structural phase transition temperature (Ts) decreases linearly with Ag concentration and extrapolates to zero at xS ≈ 0.1. The structural transitionmore » in CeCu6-xPdx remains unperturbed with Pd substitution within the range of our study. The lattice constant b slightly decreases with Ag/Pd doping, whereas a and c increase with an overall increase in the unit cell volume. Both systems, CeCu6-xAgx and CeCu6-xPdx, exhibit a magnetic quantum critical point (QCP), at x ≈ 0.2 and x ≈ 0.05, respectively. Near the QCP, long range antiferromagnetic ordering takes place at an incommensurate wave vector (δ1 0 δ2), where δ1 ~ 0.62, δ2 ~ 0.25, x = 0.125 for CeCu6-xPdx and δ1 ~ 0.64, δ2 ~ 0.3, x = 0.3 for CeCu6-xAgx. As a result, the magnetic structure consists of an amplitude modulation of the Ce moments which are aligned along the c axis of the orthorhombic unit cell.« less

  20. Structural and optical properties of (Ag,Cu)(In,Ga)Se{sub 2} polycrystalline thin film alloys

    SciTech Connect (OSTI)

    Boyle, J. H.; Shafarman, W. N.; Birkmire, R. W.; McCandless, B. E.

    2014-06-14

    The structural and optical properties of pentenary alloy (Ag,Cu)(In,Ga)Se{sub 2} polycrystalline thin films were characterized over the entire compositional range at a fixed (Cu + Ag)/(In + Ga) ratio. Films deposited at 550 °C on bare and molybdenum coated soda-lime glass by elemental co-evaporation in a single-stage process with constant incident fluxes exhibit single phase chalcopyrite structure, corresponding to 122 spacegroup (I-42d) over the entire compositional space. Unit cell refinement of the diffraction patterns show that increasing Ag substitution for Cu, the refined a{sub o} lattice constant, (Ag,Cu)-Se bond length, and anion displacement increase in accordance with the theoretical model proposed by Jaffe, Wei, and Zunger. However, the refined c{sub o} lattice constant and (In,Ga)-Se bond length deviated from theoretical expectations for films with mid-range Ag and Ga compositions and are attributed to influences from crystallographic bond chain ordering or cation electronegativity. The optical band gap, derived from transmission and reflection measurements, widened with increasing Ag and Ga content, due to influences from anion displacement and cation electronegativity, as expected from theoretical considerations for pseudo-binary chalcopyrite compounds.

  1. Efficient enhancement of hydrogen production by Ag/Cu{sub 2}O/ZnO tandem triple-junction photoelectrochemical cell

    SciTech Connect (OSTI)

    Liu, Ying; Ren, Feng Chen, Chao; Liu, Chang; Xing, Zhuo; Liu, Dan; Xiao, Xiangheng; Wu, Wei; Zheng, Xudong; Liu, Yichao; Jiang, Changzhong; Shen, Shaohua; Fu, Yanming

    2015-03-23

    Highly efficient semiconductor photoelectrodes for solar hydrogen production through photocatalytic water splitting are a promising and challenge solution to solve the energy problems. In this work, Ag/Cu{sub 2}O/ZnO tandem triple-junction photoelectrode was designed and prepared. An increase of 11 times of photocurrent is achieved in the Ag/Cu{sub 2}O/ZnO photoelectrode comparing to that of the Cu{sub 2}O film. The high performance of the Ag/Cu{sub 2}O/ZnO film is due to the optimized design of the tandem triple-junction structure, where the localized surface Plasmon resonance of Ag and the hetero-junctions efficiently absorb solar energy, produce, and separate electron-hole pairs in the photocathode.

  2. THE ELECTRONIC STRUCTURE OF AG/CU(100) SURFACE ALLOYS STUDIES BY AUGER-PHOTOELECTRON COINCIDENCE SPECTROSCOPY.

    SciTech Connect (OSTI)

    ARENA,D.A.; BARTYNSKI,R.A.; HULBERT,S.L.

    2001-10-08

    We have measured the Ag and Pd M{sub 5}VV Auger spectrum in coincidence with Ag and Pd 4d{sub 5/2} photoelectrons for the Ag/Cu(100) and Pd/Cu(100) systems, respectively, as a function of admetal coverage. These systems form surface alloys (i.e. random substitutional alloys in the first atomic layer) for impurity concentrations in the 0.1 monolayer range. For these systems, the centroid of the impurity 4d levels is expected to shift away from the Fermi level by {approx}1 eV [Ruban et al., Journal of Molecular Catalysis. A 115 (1997) 421], an effect that should be easily seen in coincidence core-valence-valence Auger spectra. We find that the impurity Auger spectra of both systems shift in a manner that is consistent with d-band moving away from EF. However, the shift for Pd is considerably smaller than expected, and a shift almost absent for Ag. The disagreement between theory and experiment is most likely caused by the neglect of lattice relaxations in the calculations.

  3. Electronic structure and conductivity of nanocomposite metal (Au,Ag,Cu,Mo)-containing amorphous carbon films

    SciTech Connect (OSTI)

    Endrino, Jose L.; Horwat, David; Gago, Raul; Andersson, Joakim; Liu, Y.S.; Guo, Jinghua; Anders, Andre

    2008-05-14

    In this work, we study the influence of the incorporation of different metals (Me = Au, Ag, Cu, Mo) on the electronic structure of amorphous carbon (a-C:Me) films. The films were produced at room temperature using a novel pulsed dual-cathode arc deposition technique. Compositional analysis was performed with secondary neutral mass spectroscopy whereas X-ray diffraction was used to identify the formation of metal nanoclusters in the carbon matrix. The metal content incorporated in the nanocomposite films induces a drastic increase in the conductivity, in parallel with a decrease in the band gap corrected from Urbach energy. The electronic structure as a function of the Me content has been monitored by x-ray absorption near edge structure (XANES) at the C K-edge. XANES showed that the C host matrix has a dominant graphitic character and that it is not affected significantly by the incorporation of metal impurities, except for the case of Mo, where the modifications in the lineshape spectra indicated the formation of a carbide phase. Subtle modifications of the spectral lineshape are discussed in terms of nanocomposite formation.

  4. Structural and magnetic phase transitions in CeCu6-xTx (T = Ag,Pd)

    SciTech Connect (OSTI)

    Poudel, Lekhanath N.; De la cruz, Clarina; Payzant, E. Andrew; Koehler, Michael R.; May, Andrew F.; Garlea, Vasile O.; Taylor, Alice E.; Parker, David S.; Cao, Huibo B.; McGuire, Michael A.; Tian, Wei; Matsuda, Masaaki; Jeen, Hyoung Jeen; Lee, Ho Nyung; Hong, Tao; Calder, Stuart A.; Lumsden, Mark D.; Zhou, Haidong; Keppens, Veerle; Mandrus, D.; Christianson, Andrew D.

    2015-12-15

    The structural and the magnetic properties of CeCu6-xAgx (0 ≤ x ≤ 0.85) and CeCu6-xPdx (0 ≤ x ≤ 0.4) have been studied using neutron diffraction, resonant ultrasound spectroscopy (RUS), x-ray diffraction measurements, and first principles calculations. The structural and magnetic phase diagrams of CeCu6-xAgx and CeCu6-xPdx as a function of Ag/Pd composition are reported. The end member, CeCu6, undergoes a structural phase transition from an orthorhombic (Pnma) to a monoclinic (P21/c) phase at 240 K. In CeCu6-xAgx, the structural phase transition temperature (Ts) decreases linearly with Ag concentration and extrapolates to zero at xS ≈ 0.1. The structural transition in CeCu6-xPdx remains unperturbed with Pd substitution within the range of our study. The lattice constant b slightly decreases with Ag/Pd doping, whereas a and c increase with an overall increase in the unit cell volume. Both systems, CeCu6-xAgx and CeCu6-xPdx, exhibit a magnetic quantum critical point (QCP), at x ≈ 0.2 and x ≈ 0.05, respectively. Near the QCP, long range antiferromagnetic ordering takes place at an incommensurate wave vector (δ1 0 δ2), where δ1 ~ 0.62, δ2 ~ 0.25, x = 0.125 for CeCu6-xPdx and δ1 ~ 0.64, δ2 ~ 0.3, x = 0.3 for CeCu6-xAgx. As a result, the magnetic structure consists of an amplitude modulation of the Ce moments which are aligned along the c axis of the orthorhombic unit cell.

  5. Ab initio study of MXe{sub n}{sup +} (M=Cu, Ag, and Au; n=1,2)

    SciTech Connect (OSTI)

    Li Xinying; Cao Xue

    2008-02-15

    The equilibrium geometries, vibrational frequencies, dissociation energies, and populations of the title species were studied at Hartree-Fock (HF), second-order Moeller-Plesset (MP2), and coupled-cluster singles-doubles (triples) [CCSD(T)] levels. The electron correlation effects and relativistic effects on the geometry and stability were investigated at the CCSD(T) level. Both effects stabilize title species. The populations analyses show that M-Xe bonding is dominated by electrostatic interactions and the best theoretical estimate of the dissociation energies are 1.104 and 2.260 eV for AuXe{sup +} and AuXe{sub 2}{sup +}, respectively. The Cu and Ag are weakly bonded to Xe compared to Au.

  6. ESR of Gd{sup 3+} in the Kondo-lattice compound YbAgCu{sub 4} and its reference compounds RAgCu{sub 4} (R=Y,Lu)

    SciTech Connect (OSTI)

    Pagliuso, P.G.; Rettori, C.; Oseroff, S.B.; Sarrao, J.; Fisk, Z.; Cornelius, A.; Hundley, M.F.

    1997-10-01

    Low-temperature (T{lt}30thinspK) electron-spin-resonance (ESR) experiments of Gd{sup 3+} diluted in the Kondo-lattice compound YbAgCu{sub 4} and its reference compounds YAgCu{sub 4} and LuAgCu{sub 4} are interpreted in terms of an enhanced density of states at the Fermi level for the Yb-based compound. The results of susceptibility and ESR (Korringa rate and g-shift) measurements show negligible electron-electron exchange enhancement for all the studied compounds. The exchange interaction between the Gd{sup 3+} local moment and the conduction electrons (c-e) is c-e wave vector dependent in all three compounds. {copyright} {ital 1997} {ital The American Physical Society}

  7. Quench degradation limit of multifilamentary AgBi2Sr2CaCu2Ox round wires

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

    Ye, Liyang; Li, Pei; Shen, Tengming; Schwartz, Justin

    2016-02-02

    Understanding safe operating limits of composite superconducting wires is important for the design of superconducting magnets. Here we report measurements of quench-induced critical current density Jc degradation in commercial Ag/Bi2Sr2CaCu2Ox (Bi-2212) round wires using heater-induced quenches at 4.2 K in self magnetic field that reveal a general degradation behavior. Jc degradation strongly depends on the local hot spot temperature Tmax, and is nearly independent of operating current, the temperature gradient along the conductor dTmax/dx, and the temperature rising rate dTmax/dt. Both Jc and n value (where n is an index of the sharpness of the superconductor-to-normal transition) exhibit small butmore » irreversible degradation when Tmax exceeds 400-450 K, and large degradation occurs when Tmax exceeds 550 K. This behavior was consistently found for a series of Bi-2212 wires with widely variable wire architectures and porosity levels in the Bi-2212 filaments, including a wire processed using a standard partial melt processing and in which Bi-2212 filaments are porous, an overpressure processed wire in which Bi-2212 filaments are nearly porosity-free and that has a Jc(4.2 K, self field) exceeding 8000 A/mm2, and a wire that has nearly no filament to filament bridges after reaction. Microstructural observations of degraded wires reveal cracks in the Bi-2212 filaments perpendicular to the wire axis, indicating that the quench-induced Ic degradation is primarily driven by strain. These results further suggest that the quench degradation temperature limit depends on the strain state of Bi-2212 filaments and this dependence shall be carefully considered when engineering a high-field Bi-2212 magnet.« less

  8. Photoelectron imaging and theoretical study on the structure and chemical binding of the mixed-ligand M(I) complexes, [HMSH]{sup ?} (M = Cu, Ag, and Au)

    SciTech Connect (OSTI)

    Qin, Zhengbo; Liu, Zhiling; Cong, Ran; Xie, Hua; Tang, Zichao, E-mail: zctang@dicp.ac.cn, E-mail: fanhj@dicp.ac.cn; Fan, Hongjun, E-mail: zctang@dicp.ac.cn, E-mail: fanhj@dicp.ac.cn [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)] [State Key Laboratory of Molecular Reaction Dynamics, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023 (China)

    2014-03-21

    We have reported a combined photoelectron imaging and theoretical study on gaseous mixed-ligand M(I) complexes of [HMSH]{sup ?} (M = Cu, Ag, and Au). With the aid of Franck-Condon simulations, vibrationally resolved photoelectron spectra yield accurate electron affinities of 3.269(6), 3.669(10), and 3.591(6) eV for [HCuSH], [HAgSH], and [HAuSH], respectively. And low-frequency modes are observed: 368(12) cm{sup ?1} for [HCuSH], 286(12) cm{sup ?1} for [HAgSH], and 327(12) cm{sup ?1} for [HAuSH], respectively. Extensive theoretical calculations are performed to aid in the spectral assignments and the calculated values agree well with the experimental observations. Although the S and H atoms have little discrepancy in electronegativity (2.20 for H and 2.54 for S), distinct bonding properties are demonstrated between HM and MS bond. It is revealed that there exists significant ionic bonding between MS in [HMSH]{sup ?} (M = Cu, Ag, and Au), while a gradual transition from ionic behavior between HCu in [HCuSH]{sup ?} to quite strong covalent bonding between HAu in [HAuSH]{sup ?}, supported by a variety of chemical bonding analyses.

  9. Microstructure of Co/X (X=Cu,Ag,Au) epitaxial thin films grown on Al{sub 2}O{sub 3}(0001) substrates

    SciTech Connect (OSTI)

    Ohtake, Mitsuru; Akita, Yuta; Futamoto, Masaaki; Kirino, Fumiyoshi

    2007-05-01

    Epitaxial thin films of Co/X (X=Cu,Ag,Au) were prepared on Al{sub 2}O{sub 3}(0001) substrates at substrate temperatures of 100 and 300 degree sign C by UHV molecular beam epitaxy. A complicated microstructure was realized for the epitaxial thin films. In-situ reflection high-energy electron diffraction observation has shown that X atoms of the buffer layer segregated to the surface during Co layer deposition, and it yielded a unique epitaxial granular structure. The structure consists of small Co grains buried in the X buffer layer, where both the magnetic small Co grains and the nonmagnetic X layer are epitaxially grown on the single crystal substrate. The structure varied depending on the X element and the substrate temperature. The crystal structure of Co grains is influenced by the buffer layer material and determined to be hcp and fcc structures for the buffer layer materials of Au and Cu, respectively.

  10. Spin and orbital magnetism of coinage metal trimers (Cu{sub 3}, Ag{sub 3}, Au{sub 3}): A relativistic density functional theory study

    SciTech Connect (OSTI)

    Afshar, Mahdi; Sargolzaei, Mohsen

    2013-11-15

    We have demonstrated electronic structure and magnetic properties of Cu{sub 3}, Ag{sub 3} and Au{sub 3} trimers using a full potential local orbital method in the framework of relativistic density functional theory. We have also shown that the non-relativistic generalized gradient approximation for the exchange-correlation energy functional gives reliable magnetic properties in coinage metal trimers compared to experiment. In addition we have indicated that the spin-orbit coupling changes the structure and magnetic properties of gold trimer while the structure and magnetic properties of copper and silver trimers are marginally affected. A significant orbital moment of 0.21?{sub B} was found for most stable geometry of the gold trimer whereas orbital magnetism is almost quenched in the copper and silver trimers.

  11. Spin and orbital magnetism of coinage metal trimers (Cu{sub 3}, Ag{sub 3}, Au{sub 3}): A relativistic density functional theory study

    SciTech Connect (OSTI)

    Afshar, Mahdi; Sargolzaei, Mohsen

    2013-11-15

    We have demonstrated electronic structure and magnetic properties of Cu{sub 3}, Ag{sub 3} and Au{sub 3} trimers using a full potential local orbital method in the framework of relativistic density functional theory. We have also shown that the non-relativistic generalized gradient approximation for the exchange-correlation energy functional gives reliable magnetic properties in coinage metal trimers compared to experiment. In addition we have indicated that the spin-orbit coupling changes the structure and magnetic properties of gold trimer while the structure and magnetic properties of copper and silver trimers are marginally affected. A significant orbital moment of 0.21μ{sub B} was found for most stable geometry of the gold trimer whereas orbital magnetism is almost quenched in the copper and silver trimers.

  12. Joining of zirconia ceramic to stainless steel and to itself using Ag{sub 57}Cu{sub 38}Ti{sub 5} filler metal

    SciTech Connect (OSTI)

    Hao, H.; Wang, Y.; Jin, Z.; Wang, X.

    1995-08-01

    The brazing of ZrO{sub 2} ceramic to 1Cr18Ni9Ti stainless steel and to itself was performed using Ag{sub 57}Cu{sub 38}Ti{sub 5} filler metal under a vacuum of t {times} 10{sup {minus}3} Pa. The effects o9f interlayer copper on the ceramic to stainless steel joint strength, and the brazing temperature (1,073 to 1,323 K) and holding time (0 to 60 min) on ceramic to ceramic joint strength were investigated. The joint strength was evaluated by shear testing. An interfacial reaction layer between the ceramic and the filler metal was found, and the reaction products were {delta}-TiO and {gamma}-AgTi{sub 3}. The joint strength of ZrO{sub 2} ceramic to stainless steel was improved by using a layer of copper of a suitable thickness. The brazing temperature and holding time had a strong influence on the joint strength of ceramic time had a strong influence on the joint strength of ceramic to ceramic, and the joint strength was mainly controlled by reaction layer thickness and the properties of the reaction products. The maximum shear strength was obtained for brazing at 1,123 K for 30 min and an interfacial reaction layer thickness of {approximately}4.4 {micro}m.

  13. Cu

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

    Cu rre n t Ge n e ratio n Lo w En e rg y Cro s s Se c tio n Me as u re m e n ts : Sc iBar an d Min iBo o NE MiniBooNE Beam ➢ 8 GeV protons on Be target ➢ <E ν > = 0.7 GeV ➢ Change horn polarity for ν, ν modes Detector ➢ 12 m diameter, 800 ton mineral oil (CH 2 ) tank ➢ 1280 inner PMTs, 240 veto PMTs ➢ Events produce prompt Cherenkov light and delayed, isotropic scintillation light ➢ A " subevent" is cluster of tank activity in time ν µ µ - e - e + π + µ + K2

  14. Synthesis and catalytic application of nanofibrous La{sub 0.9}A{sub 0.1}MnO{sub 3} (A = Ca, Cu, Ag) with macroscopic shapes

    SciTech Connect (OSTI)

    Wu, Qiang Zhao, Li; Wu, Jiang; Yao, Weifeng

    2013-10-15

    Graphical abstract: Fabrication of nanofibrous La{sub 0.9}A{sub 0.1}MnO{sub 3} (A = Ca, Cu, Ag) perovskite-type oxides with macroscopic shapes was successfully obtained using carbon nanofibers (CNFs) as templates. Furthermore, their application for the combustion of carbon black (CB), which is a model of particulate matter exhausted from diesel engines, was demonstrated. - Highlights: Nanofibrous La{sub 0.9}A{sub 0.1}MnO{sub 3} with macroscopic shapes was successfully obtained. CNFs template method used here is facile, effective and reproducible. The obtained materials show superior catalytic activity in soot combustion. The catalytic order is La{sub 0.9}Ag{sub 0.1}MnO{sub 3} > La{sub 0.9}Cu{sub 0.1}MnO{sub 3} > La{sub 0.9}Ca{sub 0.1}MnO{sub 3}. - Abstract: Fabrication of nanofibrous La{sub 0.9}A{sub 0.1}MnO{sub 3} (A = Ca, Cu, Ag) perovskite-type oxides with macroscopic shapes can be successfully obtained by using CNFs as templates. Field emission scanning electron microscopy (FE-SEM) and X-ray diffraction (XRD) analysis confirmed the template effect and formation of nanofibrous perovskite-type oxides on macroscopic silica fiber. It turned out that it is reliable to control the desired single-phase La{sub 0.9}A{sub 0.1}MnO{sub 3} (A = Ca, Cu, Ag) perovskite-type oxides formation by tuning the corresponding metal ratio during preparation process. Furthermore, it showed that the as-prepared nanofibrous La{sub 0.9}A{sub 0.1}MnO{sub 3} (A = Ca, Cu, Ag) perovskite-type oxides can greatly decrease the combustion temperature of nanosized carbon black particles, and follows the order of La{sub 0.9}Ag{sub 0.1}MnO{sub 3} > La{sub 0.9}Cu{sub 0.1}MnO{sub 3} > La{sub 0.9}Ca{sub 0.1}MnO{sub 3}, indicating their high potential application prospects in diesel soot particles treatment.

  15. Ce{sub 2}AgYb{sub 5/3}Se{sub 6}, La{sub 2}CuErTe{sub 5}, and Ce{sub 2}CuTmTe{sub 5}: Three new quaternary interlanthanide chalcogenides

    SciTech Connect (OSTI)

    Babo, Jean-Marie; Albrecht-Schmitt, Thomas E.

    2013-01-15

    Three new ordered quaternary interlanthanide chalcogenides, Ce{sub 2}AgYb{sub 5/3}Se{sub 6}, La{sub 2}CuErTe{sub 5}, and Ce{sub 2}CuTmTe{sub 5}, have been prepared by direct reaction of the elements in molten NaBr at 900 Degree-Sign C. Each compound forms a new structure-type. The Ce{sub 2}AgYb{sub 5/3}Se{sub 6} structure consists of {infinity}{sup 2}{l_brace} [AgYb{sub 5/6}Se{sub 6}]{sup 6-}{r_brace} layers intercalated by Ce{sup 3+} cations. These layers are composed of {infinity}{sup 1}{l_brace} [Yb{sub 5/3}Se{sub 6}]{sup 7-}{r_brace} quadruplet ribbons of [YbSe{sub 6}]{sup 9-} octahedra and infinite {infinity}{sup 1}{l_brace} [AgSe{sub 6}]{sup 11-}{r_brace} double chains of [AgSe{sub 5}]{sup 9-}. The La{sub 2}CuErTe{sub 5} structure is made of one-dimensional {infinity}{sup 1}{l_brace} [CuErTe{sub 5}]{sup 6-}{r_brace} ribbons separated by La{sup 3+} cations. These ribbons are formed by cis-edge sharing {infinity}{sup 1}{l_brace} [CuTe{sub 2}]{sup 3-}{r_brace} tetrahedral chains and trans-edge sharing {infinity}{sup 1}{l_brace} [ErTe{sub 4}]{sup 5-}{r_brace} chains. While La{sub 2}CuErTe{sub 5} crystallizes in the orthorhombic space group Pnma, Ce{sub 2}CuTmTe{sub 5} crystallizes in the monoclinic space group C2/m. The latter crystal structure is assembled from {infinity}{sup 2}{l_brace} [CuTmTe{sub 5}]{sup 6-}{r_brace} layers intercalated by Ce{sup 3+} cations. These layers consist of single {infinity}{sup 1}{l_brace} [TmTe{sub 4}]{sup 5-}{r_brace} chains connected to each other through dimers or pseudo-double chains. - Graphical abstract: [CuTe{sub 4}]{sup 7-} tetrahedra sharing cis-edges to yield chains in the La{sub 2}CuErTe{sub 5}. Highlights: Black-Right-Pointing-Pointer New ordered interlanthanide tellurides. Black-Right-Pointing-Pointer New quaternary chalcogenides. Black-Right-Pointing-Pointer Low-dimensional lanthanide chalcogenide substructures. Black-Right-Pointing-Pointer Flux synthesis of new chalcogenides.

  16. SolarDS | Open Energy Information

    Open Energy Info (EERE)

    fy10osti45832.pdf Language: English References: SolarDS1 Logo: SolarDS The Solar Deployment System (SolarDS) model evaluates the potential market penetration of solar...

  17. Microstructural Development and Mechanical Properties for Reactive Air Brazing of ZTA to Ni Alloys using Ag-CuO Braze Alloys

    SciTech Connect (OSTI)

    Prevost, Erica; DeMarco, A.Joseph; MacMichael, Beth; Joshi, Vineet V.; Meier, Alan; Hoffman, John W.; Walker, William J.

    2014-12-01

    Reactive air brazing (RAB) is a potential joining technique to join metal alloys to ceramics for a variety of applications. In the current study, nickel (Ni) alloys were heat treated to form an oxide layer prior to RAB joining to zirconia toughened alumina (ZTA). The Ni alloys evaluated were Nicrofer 6025 HT, Inconel 600, Inconel 693, Haynes 214 and Inconel 601. The ZTA studied had compositions of 0 to 15 wt% zirconia and 0 to 14 wt% glass. Four point-bend tests were performed to evaluate the joint strength of ZTA/ZTA and ZTA/nickel alloys brazed with Ag-2wt% CuO braze alloys. It was determined that the joint strength is not a function of the ZTA composition, but that the strength is a strong function of the chemistry and microstructure of the oxide layer formed on the nickel alloy. It was determined that an increase in the aluminum content of the Ni alloy resulted in an increase of the thickness of alumina in the oxide layer and was directly proportional to the bond strength with the exception of Inconel 601 which exhibited relatively high joint strengths even though it had a relatively low aluminum content.

  18. Determining conductivity and mobility values of individual components in multiphase composite Cu{sub 1.97}Ag{sub 0.03}Se

    SciTech Connect (OSTI)

    Day, Tristan W.; Brown, David R.; Snyder, G. Jeffrey; Zeier, Wolfgang G.; Melot, Brent C.

    2014-10-27

    The intense interest in phase segregation in thermoelectrics as a means to reduce the lattice thermal conductivity and to modify the electronic properties from nanoscale size effects has not been met with a method for separately measuring the properties of each phase assuming a classical mixture. Here, we apply effective medium theory for measurements of the in-line and Hall resistivity of a multiphase composite, in this case Cu{sub 1.97}Ag{sub 0.03}Se. The behavior of these properties with magnetic field as analyzed by effective medium theory allows us to separate the conductivity and charge carrier mobility of each phase. This powerful technique can be used to determine the matrix properties in the presence of an unwanted impurity phase, to control each phase in an engineered composite, and to determine the maximum carrier concentration change by a given dopant, making it the first step toward a full optimization of a multiphase thermoelectric material and distinguishing nanoscale effects from those of a classical mixture.

  19. The problem of intermixing of metals possessing no mutual solubility upon explosion welding (Cu-Ta, Fe-Ag, Al-Ta)

    SciTech Connect (OSTI)

    Greenberg, B.A.; Ivanov, M.A.; Rybin, V.V.; Elkina, O.A.; Antonova, O.V.; Patselov, A.M.; Inozemtsev, A.V.; Plotnikov, A.V.; Volkova, A.Yu.; Besshaposhnikov, Yu.P.

    2013-01-15

    On the basis of the results obtained for joints of dissimilar metals such as copper-tantalum and iron-silver, the reason of immiscible suspensions mixing upon explosion welding has been cleared out. It has been found that the interface (plain or wavy) is not smooth and contains inhomogeneities, namely, cusps and local melting zones. The role of granulating fragmentation providing partitioning of initial materials as a main channel of input energy dissipation has been revealed. It has been shown that in joints of metals possessing normal solubility the local melting zones are true solutions, but if metals possess no mutual solubility the local melting zones are colloidal solutions. Realization of either emulsion or suspension variant takes place. The results can be used in the development of new joints of metals possessing no mutual solubility. - Highlights: Black-Right-Pointing-Pointer Immiscible pairs Ta/Cu and Fe/Ag are welded successfully by explosive welding. Black-Right-Pointing-Pointer Fragmentation provides for partitioning as the main energy dissipation channel. Black-Right-Pointing-Pointer Immiscible metals form colloidal solid solutions during solidification. Black-Right-Pointing-Pointer Melting and boiling temperatures ratio determines the colloidal solution type. Black-Right-Pointing-Pointer Local melting zones being in suspension form enhance welds hardening.

  20. Low-cost spray-processed Ag{sub 1−x}Cu{sub x}InS{sub 2} nano-films: Structural and functional investigation within the Lattice Compatibility Theory framework

    SciTech Connect (OSTI)

    Gherouel, D.; Yumak, A.; Znaidi, M.; Bouzidi, A.; Boubaker, K.; Yacoubi, N.; Amlouk, M.

    2015-08-15

    Highlights: • Cu{sub x}Ag{sub 1−x}InS{sub 2} with a minimal lattice mismatch between absorbers and buffers. • The lattice compatibility for understanding silver–copper kinetics. • Controlled and enhanced spray pyrolisis method as a low-cost synthesis protocol. - Abstract: This work deals with some structural and optical investigations about Cu{sub x}Ag{sub 1−x}InS{sub 2} alloys sprayed films and the beneficial effect of copper incorporation in AgInS{sub 2} ternary matrices. The main purpose of this work is to obtain the band gap energy E{sub g} as well as different lattice parameters. The studied properties led to reaching minimum of lattice mismatch between absorber and buffer layers within solar cell devices. As a principal and original finding, the lattice compatibility between both silver and copper indium disulfide structures has been proposed as a guide for understanding kinetics of these materials crystallization.

  1. Schottky barrier height measurements of Cu/Si(001), Ag/Si(001), and Au/Si(001) interfaces utilizing ballistic electron emission microscopy and ballistic hole emission microscopy

    SciTech Connect (OSTI)

    Balsano, Robert; Matsubayashi, Akitomo; LaBella, Vincent P.

    2013-11-15

    The Schottky barrier heights of both n and p doped Cu/Si(001), Ag/Si(001), and Au/Si(001) diodes were measured using ballistic electron emission microscopy and ballistic hole emission microscopy (BHEM), respectively. Measurements using both forward and reverse ballistic electron emission microscopy (BEEM) and (BHEM) injection conditions were performed. The Schottky barrier heights were found by fitting to a linearization of the power law form of the Bell-Kaiser BEEM model. The sum of the n-type and p-type barrier heights are in good agreement with the band gap of silicon and independent of the metal utilized. The Schottky barrier heights are found to be below the region of best fit for the power law form of the BK model, demonstrating its region of validity.

  2. Method of quantitating dsDNA

    DOE Patents [OSTI]

    Stark, Peter C.; Kuske, Cheryl R.; Mullen, Kenneth I.

    2002-01-01

    A method for quantitating dsDNA in an aqueous sample solution containing an unknown amount of dsDNA. A first aqueous test solution containing a known amount of a fluorescent dye-dsDNA complex and at least one fluorescence-attenutating contaminant is prepared. The fluorescence intensity of the test solution is measured. The first test solution is diluted by a known amount to provide a second test solution having a known concentration of dsDNA. The fluorescence intensity of the second test solution is measured. Additional diluted test solutions are similarly prepared until a sufficiently dilute test solution having a known amount of dsDNA is prepared that has a fluorescence intensity that is not attenuated upon further dilution. The value of the maximum absorbance of this solution between 200-900 nanometers (nm), referred to herein as the threshold absorbance, is measured. A sample solution having an unknown amount of dsDNA and an absorbance identical to that of the sufficiently dilute test solution at the same chosen wavelength is prepared. Dye is then added to the sample solution to form the fluorescent dye-dsDNA-complex, after which the fluorescence intensity of the sample solution is measured and the quantity of dsDNA in the sample solution is determined. Once the threshold absorbance of a sample solution obtained from a particular environment has been determined, any similarly prepared sample solution taken from a similar environment and having the same value for the threshold absorbance can be quantified for dsDNA by adding a large excess of dye to the sample solution and measuring its fluorescence intensity.

  3. Temperature, pressure, and size dependence of Pd-H interaction in size selected Pd-Ag and Pd-Cu alloy nanoparticles: In-situ X-ray diffraction studies

    SciTech Connect (OSTI)

    Sengar, Saurabh K.; Mehta, B. R.; Kulriya, P. K.

    2014-03-21

    In this study, in-situ X-ray diffraction has been carried out to investigate the effect of temperature and pressure on hydrogen induced lattice parameter variation in size selected Pd-Ag and Pd-Cu alloy nanoparticles. The nanoparticles of three different mobility equivalent diameters (20, 40, and 60 nm) having a narrow size distribution were prepared by gas phase synthesis method. In the present range of temperature (350 K to 250 K) and pressure (10{sup −4} to 100 millibars), no α (H/Pd ≤ 0.03) ↔ β (H/Pd ≥ 0.54) phase transition is observed. At temperature higher than 300 °C or pressure lower than 25 millibars, there is a large difference in the rate at which lattice constant varies as a function of pressure and temperature. Further, the lattice variation with temperature and pressure is also observed to depend upon the nanoparticle size. At lower temperature or higher pressure, size of the nanoparticle seems to be relatively less important. These results are explained on the basis of the relative dominance of physical absorption and diffusion of H in Pd alloy nanoparticles at different temperature and pressure. In the present study, absence of α ↔ β phase transition points towards the advantage of using Pd-alloy nanoparticles in applications requiring long term and repeated hydrogen cycling.

  4. Investigation of electrochemical migration on Sn-0.7Cu-0.3Ag-0.03P-0.005Ni solder alloy in HNO{sub 3} solution

    SciTech Connect (OSTI)

    Sarveswaran, C.; Othman, N. K.; Ali, M. Yusuf Tura; Ani, F. Che; Samsudin, Z.

    2015-09-25

    Current issue in lead-free solder in term of its reliability is still under investigation. This high impact research attempts to investigate the electrochemical migration (ECM) on Sn-0.7Cu-0.3Ag-0.03P-0.005Ni solder alloy by Water Drop Test (WDT) in different concentration of HNO{sub 3} solution. The concentration of HNO{sub 3} solution used in this research was 0.05, 0.10, 0.50 and 1M. Optical Microscope (OM), Field Emission Scanning Electron Microscope (FESEM) and Energy Dispersive X-Ray Analysis (EDX) were carried out in order to analysis the ECM behavior based on the growth of dendrite formation after WDT. In general, the results demonstrated that dendrite growth is faster in higher concentration compared with low concentration of HNO{sub 3}. The concentration of HNO{sub 3} solution used has a strong correlation with Mean-Time-To-Failure (MTTF). As the concentration of HNO{sub 3} increases, the MTTF value decreases. Based on the MTTF results the solder alloy in 1M HNO{sub 3} solution is most susceptible to ECM. SnO{sub 2} forms as a corrosion by-product in the samples proved by EDX analysis. The solder alloy poses a high reliability risk in microelectronic devices during operation in 1M HNO{sub 3} solution.

  5. Positive Parity $D_s$ Mesons

    SciTech Connect (OSTI)

    Leskovec, Luka; Lang, C. B.; Mohler, Daniel; Prelovsek, Sasa; Woloshyn, R. M.

    2015-11-12

    We study the positive parity charmed strange mesons using lattice QCD, the only reliable ab initio method to study QCD at low energies. Especially the experimentally observed $D_{s0}^*(2317)$ and $D_{s1}(2460)$ have challenged theory for quite some time. The dynamical lattice QCD simulations are performed at two distinct pion masses, $m_{\\pi}$ = 266 MeV and 156 MeV, using both $\\bar{c}s$ as well as $DK$ and $D^*K$ scattering operators in the construction of the correlation matrix in order to take into the account threshold effects. While the $J^P = 0^+$ channel benefited most from the inclusion of scattering operators, it was also crucial for the case of the $D_{s1}(2460)$. Using the L\\"uscher method, which relates the finite volume spectrum to the infinite volume scattering matrix, we were able to determine the near threshold behavior of the scattering amplitude. From it we extracted the binding momenta and the masses of the below-threshold bound states $D_{s0}^*(2317)$ and $D_{s1}(2460)$ by determining the pole positions of the scattering amplitudes. Our results compare well with experiment, resolving a long standing discrepancy between theory and experiment.

  6. Abwicklungsgesellschaft Biogas I AG Formerly Schmack Biogas AG...

    Open Energy Info (EERE)

    Abwicklungsgesellschaft Biogas I AG Formerly Schmack Biogas AG Jump to: navigation, search Name: Abwicklungsgesellschaft Biogas I AG (Formerly Schmack Biogas AG) Place: Schwandorf,...

  7. Renewable Energy Engineering Consulting AG REECON AG | Open Energy...

    Open Energy Info (EERE)

    Consulting AG REECON AG Jump to: navigation, search Name: Renewable Energy Engineering Consulting AG (REECON AG) Place: Heppenheim, Hessen, Germany Zip: D-64646 Sector: Solar...

  8. Antec Solar Energy AG formerly Oekologik Ecovest AG | Open Energy...

    Open Energy Info (EERE)

    Antec Solar Energy AG formerly Oekologik Ecovest AG Jump to: navigation, search Name: Antec Solar Energy AG (formerly Oekologik Ecovest AG) Place: Arnstadt, Germany Zip: 99310...

  9. Observation of the Decay B??Ds(*)+K?l????l

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

    del Amo Sanchez, P.; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; et al

    2011-07-22

    We report the observation of the decay B??Ds(*)+K?l??l based on 342fb? of data collected at the ?(4S) resonance with the BABAR detector at the PEP-II e?e? storage rings at SLAC. A simultaneous fit to three D+s decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B??Ds(*)+K?l??l with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B??Ds(*)+K?l??l)=[6.13+1.04-1.03(stat)0.43(syst)0.51(B(Ds))]10??, where the last error reflects the limited knowledge of the Ds branching fractions.

  10. DS Deutsche Solargesellschaft mbH | Open Energy Information

    Open Energy Info (EERE)

    Germany Zip: 74074 Sector: Solar Product: DS Deutsche Solargesellschaft markets PV installations in Spain to mostly German private investors. Coordinates: 49.143145, 9.219295...

  11. VWind AG | Open Energy Information

    Open Energy Info (EERE)

    VWind AG Jump to: navigation, search Name: VWind AG Place: Germany Sector: Wind energy Product: Germany-based offshore wind installation company. References: VWind AG1 This...

  12. Altus AG | Open Energy Information

    Open Energy Info (EERE)

    Altus AG Jump to: navigation, search Name: Altus AG Place: Germany Sector: Renewable Energy Product: Germany-based renewable energy project developer. References: Altus AG1 This...

  13. WKV AG | Open Energy Information

    Open Energy Info (EERE)

    WKV AG Place: Gutach, Baden-Wrttemberg, Germany Zip: 79261 Sector: Hydro Product: German-based hydro turbines manufacturer, Wasserkraft Volk AG (WKV AG) provides technology...

  14. Eifelstrom AG | Open Energy Information

    Open Energy Info (EERE)

    Eifelstrom AG Place: Germany Sector: Solar Product: Holding company belonging to the family of Frank Asbeck, founder of Solar World AG. References: Eifelstrom AG1 This article...

  15. Campa AG | Open Energy Information

    Open Energy Info (EERE)

    Campa AG Jump to: navigation, search Name: Campa AG Place: Ochsenfurt, Germany Zip: 97199 Product: String representation "Campa AG is one ... on and trading." is too long....

  16. Solarsquare AG | Open Energy Information

    Open Energy Info (EERE)

    Solarsquare AG Jump to: navigation, search Name: Solarsquare AG Place: Switzerland Sector: Solar Product: Solar modules distributor. References: Solarsquare AG1 This article is a...

  17. Umwelt Management AG UMaAG | Open Energy Information

    Open Energy Info (EERE)

    Management AG UMaAG Jump to: navigation, search Name: Umwelt Management AG (UMaAG) Place: Cuxhaven, Germany Zip: 27478 Sector: Wind energy Product: RE project developer, esp. wind...

  18. New experiments elucidating the current limiting mechanisms of Ag-sheathed (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} tapes.

    SciTech Connect (OSTI)

    Anderson, J.W.; Babcock, S.E.; Cai, X.Y.; Dorris, S.E.; Feldmann, M.; Jiang, J.; Larbalestier, D.C.; Li, Q.; Parrell, J.A.; Parrella, R.; Polak, M.; Polyanskii, A.; Riley, G.N. Jr.; Rupich, M.; Wu, Y.

    1999-01-15

    Multiple current limiting mechanisms exist from the nanometer to millimeter scale in Ag-sheathed (Bi,Pb)-2223 tapes. Recent studies of the zero-field critical current density (J{sub c} (0T, 77K)), the irreversibility field (H*) and the crack microstructure elucidate these properties. We show that H*(77K) can vary significantly over the range {approximately}120-260 mT, independently of J{sub c} (0T, 77K). Cracks, actual or incipient, exist on the sub to several hundred micron scale. Surface magneto optical imaging of whole tapes, correlated to subsequent ultrasonic fracture analysis of. the bare 2223 filaments extracted by dissolving away the Ag shows that even composites having J{sub c} (0T, 77K) values of 60 kA/cm{sup 2} exhibit strong signs of unhealed rolling damage. These combined studies show that today's very best 2223 tapes are still far from full optimization.

  19. Controlled preparation of Ag–Cu{sub 2}O nanocorncobs and their enhanced photocatalytic activity under visible light

    SciTech Connect (OSTI)

    Yang, Siyuan; Zhang, Shengsen; Wang, Hongjuan; Yu, Hao; Fang, Yueping; Peng, Feng

    2015-10-15

    Graphical abstract: The corncob-like Ag–Cu{sub 2}O nanostructure with suitably exposed Ag surface exhibited much higher photocatalytic activity than Ag@Cu{sub 2}O nanocables and Cu{sub 2}O nanowires. - Highlights: • Ag–Cu{sub 2}O nanocorncobs have been controllably prepared by a simple synthesis. • The possible formation mechanism of Ag–Cu{sub 2}O has been studied. • Ag–Cu{sub 2}O exhibits noticeable improved photocurrent compared with the pure Cu{sub 2}O NWs. • Ag–Cu{sub 2}O with suitably exposed Ag surface shows much higher photocatalytic activity. - Abstract: Novel corncob-like nano-heterostructured Ag–Cu{sub 2}O photocatalyst has been controllably prepared by adjusting the synthetic parameters, and the possible formation mechanism has been also studied. The photoelectrochemical and photocatalytic performances demonstrated that the as-prepared Ag–Cu{sub 2}O nanocorncobs exhibited higher photocatalytic activity than both pure Cu{sub 2}O nanowires and cable-like Ag@Cu{sub 2}O nano-composites. It was concluded that Ag–Cu{sub 2}O nanocorncobs with suitably exposed Ag surface not only effectively inhibit the recombination of electron–hole pairs but also suitably increase the active sites of electronic conduction, and thus increasing the photocatalytic activity under visible light irradiation.

  20. Solarparc AG Former WindWelt AG | Open Energy Information

    Open Energy Info (EERE)

    Name: Solarparc AG (Former WindWelt AG) Place: Bonn, Germany Zip: 53115 Sector: Solar, Wind energy Product: Focused on planning, developing and operating wind and solar power...

  1. Tse AG | Open Energy Information

    Open Energy Info (EERE)

    Tse AG Jump to: navigation, search Name: tse.AG Place: Germany Product: Thenergo's German subsidiary. References: tse.AG1 This article is a stub. You can help OpenEI by expanding...

  2. {bold {ital In situ}} measurements of texture and phase development in (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10}{endash}Ag tapes

    SciTech Connect (OSTI)

    Thurston, T.R.; Haldar, P.; Wang, Y.L.; Suenaga, M.; Jisrawi, N.M. |; Wildgruber, U.

    1997-04-01

    Hard x-rays from a synchrotron source were utilized in diffraction experiments performed at elevated temperatures (up to {approximately}870{degree}C) on (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub 10} (Bi-2223) tapes {ital completely} encased in silver. The general behavior of the phase and texture development under typical processing conditions was determined, and the effects that several variations in processing conditions had on the phase and texture development were examined. These results and their implications for improving processing conditions are discussed. {copyright} {ital 1997 Materials Research Society.}

  3. Interstrom AG | Open Energy Information

    Open Energy Info (EERE)

    AG Jump to: navigation, search Name: Interstrom AG Place: Bayreuth, Bavaria, Germany Zip: 95448 Sector: Solar Product: Germany-based electricity provider. The firm is...

  4. Solare AG | Open Energy Information

    Open Energy Info (EERE)

    AG Jump to: navigation, search Name: Solare AG Place: Cologne, North Rhine-Westphalia, Germany Zip: 50678 Sector: Solar Product: Germany-based equipment manufacturer and developer...

  5. Inergetic AG | Open Energy Information

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    Inergetic AG Jump to: navigation, search Name: Inergetic AG Place: Schwerin, Germany Zip: 19061 Sector: Biomass Product: Biomass power plant developer and operator. Actively...

  6. Solarcomplex AG | Open Energy Information

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    Solarcomplex AG Jump to: navigation, search Name: solarcomplex AG Place: Singen, Germany Zip: 78224 Sector: Renewable Energy, Solar Product: Regional solar energy company with the...

  7. Energieteam AG | Open Energy Information

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    Energieteam AG Jump to: navigation, search Name: Energieteam AG Place: Lichtenau, Germany Zip: D-33165 Sector: Wind energy Product: Wind farm developer. Has developed 904MW wind in...

  8. Solea AG | Open Energy Information

    Open Energy Info (EERE)

    AG Jump to: navigation, search Name: Solea AG Place: Plattling, Germany Zip: 94447 Product: A Germany PV project developer and building contractor, who also manufactures its own...

  9. REON AG | Open Energy Information

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    REON AG Jump to: navigation, search Name: REON AG Place: Worpswede, Germany Zip: D-27726 Sector: Services Product: Specialists in technical and strategic advisory services for...

  10. Wattner AG | Open Energy Information

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    to: navigation, search Name: Wattner AG Place: Kln, Germany Zip: 50679 Product: German project finance arranger. References: Wattner AG1 This article is a stub. You can...

  11. ENRO AG | Open Energy Information

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    AG Jump to: navigation, search Name: ENRO AG Place: Essen, Germany Zip: 45128 Sector: Biomass Product: Focuses on distributed energy supply concepts for local authorities and...

  12. Evader AG | Open Energy Information

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    AG Jump to: navigation, search Name: Evader AG Place: Zug, Switzerland Product: Joint venture between Washington-based Evader Inc and the Schneider Group, in order to streamline...

  13. Solarvalue AG | Open Energy Information

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    Solarvalue AG Jump to: navigation, search Name: Solarvalue AG Place: Berlin, Berlin, Germany Zip: D-10719 Product: German manfuacturer of polysilicon made through metallurgical...

  14. Odersun AG | Open Energy Information

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    Odersun AG Jump to: navigation, search Name: Odersun AG Place: Frankfurt, Germany Zip: 15236 Product: German manufacturer of copper indium disulphide on copper tape (CISCuT)...

  15. Varta AG | Open Energy Information

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    Varta AG Jump to: navigation, search Name: Varta AG Place: Hanover, Germany Zip: 30419 Product: Headquartered in Hanover, concentrates on developing its global microbattery...

  16. ABIDAS AG | Open Energy Information

    Open Energy Info (EERE)

    ABIDAS AG Jump to: navigation, search Name: ABIDAS AG Place: Werder, Brandenburg, Germany Zip: 14542 Product: Local energy consultant and PV systems installer and integrator....

  17. Solarstocc AG | Open Energy Information

    Open Energy Info (EERE)

    AG Place: Bad Zwischenahn, Germany Zip: 26160 Product: Designer and manufacturer of photovoltaic products and components. References: Solarstocc AG1 This article is a stub. You...

  18. Kopf AG | Open Energy Information

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    Name: Kopf AG Place: Sulz-Bergfelden (DE), Germany Zip: 72172 Product: Focused on photovoltaic power systems, and energy and environmental technology. References: Kopf AG1 This...

  19. Eutropa AG | Open Energy Information

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    Eutropa AG Jump to: navigation, search Name: Eutropa AG Place: Munich, Bavaria, Germany Zip: 82008 Sector: Renewable Energy Product: Munich-based consultancy providing information...

  20. Stadtwerke Mainz AG | Open Energy Information

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    Mainz AG Jump to: navigation, search Name: Stadtwerke Mainz AG Place: Mainz, Germany Zip: 55118 Product: Utility in Mainz, Germany. References: Stadtwerke Mainz AG1 This article...

  1. Phase diagrams of the Tb-Ag-In and Dy-Ag-In systems at 870 K

    SciTech Connect (OSTI)

    Demchyna, M.; Belan, B.; Manyako, M.; Pietraszko, A.; Kalychak, Ya.

    2012-08-15

    The phase equilibria of Tb-Ag-In and Dy-Ag-In ternary systems have been studied at 870 K in the whole concentration range by means of X-ray powder, single crystal X-ray diffraction and EDX analyses. Isothermal sections of Tb-Ag-In and Dy-Ag-In phase diagrams at this temperature have been constructed. Both systems are characterized by formation of three ternary compounds: REAg{sub 3}In{sub 3} (YbAg{sub 2}In{sub 4}-type, space group Im-3), REAg{sub 2}In (MnCu{sub 2}Al-type, space group Fm-3m) and RE{sub 2}AgIn{sub 3} (CaIn{sub 2}-type, space group P6{sub 3}/mmc) RE=Tb, Dy. Homogeneity ranges of the ternary phases with CaIn{sub 2} structure type lies from 35 to 60 at% of In for Tb-containing phase and from 39 to 50 at% of In for Dy-containing phase. The existence of solid solutions based on REAg (CsCl-type, space group Pm-3m) binary compounds up to 30 at% of In and REIn{sub 3} (AuCu{sub 3}-type, space group Pm-3 m) binary compounds up to 5 at% of Ag has been found. - Graphical Abstract: Phase relations in the ternary systems Tb-Ag-In and Dy-Ag-In have been established for the isothermal section at T=870 K based on X-ray powder and single crystal diffraction analyses. The existence of three ternary compounds in each system were observed. Highlights: Black-Right-Pointing-Pointer Isothermal section of Tb-Ag-In system at T=870 K was constructed. Black-Right-Pointing-Pointer Isothermal section of Dy-Ag-In system at T=870 K was constructed. Black-Right-Pointing-Pointer Three ternary compounds and two solid solutions in each system were detected.

  2. Loremo AG | Open Energy Information

    Open Energy Info (EERE)

    Loremo AG Place: Mnchen, Bavaria, Germany Zip: 80807 Product: Designer of a 157 mpg light weight 2 cylinder Turbo-Diesel car. References: Loremo AG1 This article is a...

  3. ASP AG | Open Energy Information

    Open Energy Info (EERE)

    search Name: ASP AG Place: Laupen, Switzerland Zip: CH-8637 Product: Manufacturer of inverters for PV systems and other off- and on-grid applications. References: ASP AG1 This...

  4. 2011 CLOuDS Campaign | Princeton Plasma Physics Lab

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

    CLOuDS Campaign (photo credits: NASA Johnson Space Center) View larger image 11 PR 0706 29 View larger image 11 PR 0706 31 View larger image 11 PR 0706 32 View larger image Jsc 2011 E 070584 View larger image Jsc 2011 E 070586 View larger image Jsc 2011 E 070594 View larger image Jsc 2011 E 070600 View larger image Jsc 2011 E 070602 View larger image Jsc 2011 E 070605 View larger image Jsc 2011 E 070612 View larger image Jsc 2011 E 070615 View larger image Jsc 2011 E 070633 View larger image Jsc

  5. CLOuDS: 2012 Workshop | Princeton Plasma Physics Lab

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

    CLOuDS: 2012 Workshop View larger image IMG 1124 View larger image IMG 1125 View larger image IMG 1126 View larger image IMG 1155 View larger image IMG 1156 View larger image IMG 1157 View larger image IMG 1127 View larger image IMG 1128 View larger image IMG 1130 View larger image IMG 1131 View larger image IMG 1132 View larger image IMG 1133 View larger image IMG 1134 View larger image IMG 1137 View larger image IMG 1146 View larger image IMG 1148 View larger image IMG 1151 View larger image

  6. Observation of the Decay B⁻→Ds(*)+K⁻l⁻ν⁻⁻l

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

    del Amo Sanchez, P.; Lees, J. P.; Poireau, V.; Prencipe, E.; Tisserand, V.; Garra Tico, J.; Grauges, E.; Martinelli, M.; Palano, A.; Pappagallo, M.; et al

    2011-07-22

    We report the observation of the decay B⁻→Ds(*)+K⁻l⁻ν¯l based on 342fb⁻¹ of data collected at the Υ(4S) resonance with the BABAR detector at the PEP-II e⁺e⁻ storage rings at SLAC. A simultaneous fit to three D+s decay chains is performed to extract the signal yield from measurements of the squared missing mass in the B meson decay. We observe the decay B⁻→Ds(*)+K⁻l⁻ν¯l with a significance greater than 5 standard deviations (including systematic uncertainties) and measure its branching fraction to be B(B⁻→Ds(*)+K⁻l⁻ν¯l)=[6.13+1.04-1.03(stat)±0.43(syst)±0.51(B(Ds))]×10⁻⁴, where the last error reflects the limited knowledge of the Ds branching fractions.

  7. Nucleic acid encoding DS-CAM proteins and products related thereto

    DOE Patents [OSTI]

    Korenberg, Julie R.

    2005-11-01

    In accordance with the present invention, there are provided Down Syndrome-Cell Adhesion Molecule (DS-CAM) proteins. Nucleic acid sequences encoding such proteins and assays employing same are also disclosed. The invention DS-CAM proteins can be employed in a variety of ways, for example, for the production of anti-DS-CAM antibodies thereto, in therapeutic compositions and methods employing such proteins and/or antibodies. DS-CAM proteins are also useful in bioassays to identify agonists and antagonists thereto.

  8. Hydrostatic extrusion of Cu-Ag melt spun ribbon

    DOE Patents [OSTI]

    Hill, M.A.; Bingert, J.F.; Bingert, S.A.; Thoma, D.J.

    1998-09-08

    The present invention provides a method of producing high-strength and high-conductance copper and silver materials comprising the steps of combining a predetermined ratio of the copper with the silver to produce a composite material, and melt spinning the composite material to produce a ribbon of copper and silver. The ribbon of copper and silver is heated in a hydrogen atmosphere, and thereafter die pressed into a slug. The slug then is placed into a high-purity copper vessel and the vessel is sealed with an electron beam. The vessel and slug then are extruded into wire form using a cold hydrostatic extrusion process. 5 figs.

  9. Hydrostatic extrusion of Cu-Ag melt spun ribbon

    DOE Patents [OSTI]

    Hill, Mary Ann; Bingert, John F.; Bingert, Sherri A.; Thoma, Dan J.

    1998-01-01

    The present invention provides a method of producing high-strength and high-conductance copper and silver materials comprising the steps of combining a predetermined ratio of the copper with the silver to produce a composite material, and melt spinning the composite material to produce a ribbon of copper and silver. The ribbon of copper and silver is heated in a hydrogen atmosphere, and thereafter die pressed into a slug. The slug then is placed into a high-purity copper vessel and the vessel is sealed with an electron beam. The vessel and slug then are extruded into wire form using a cold hydrostatic extrusion process.

  10. PV Crystalox Solar AG formerly PV Silicon AG | Open Energy Information

    Open Energy Info (EERE)

    PV Crystalox Solar AG formerly PV Silicon AG Jump to: navigation, search Name: PV Crystalox Solar AG (formerly PV Silicon AG) Place: Abingdon, England, United Kingdom Zip: OX14 4SE...

  11. Bosch Solar Energy AG former ErSol Solar Energy AG | Open Energy...

    Open Energy Info (EERE)

    AG former ErSol Solar Energy AG Jump to: navigation, search Name: Bosch Solar Energy AG (former ErSol Solar Energy AG) Place: Erfurt, Germany Zip: D-99099 Product: Germany-based...

  12. Conergy AG | Open Energy Information

    Open Energy Info (EERE)

    search Name: Conergy AG Place: Hamburg, Hamburg, Germany Zip: 20537 Sector: Biofuels, Biomass, Wind energy Product: PV and passive system integrator and inverter...

  13. Cowatec AG | Open Energy Information

    Open Energy Info (EERE)

    Cowatec AG Place: Burglengenfeld, Bavaria, Germany Zip: 93133 Product: Cowatec is a biogas plant turnkey provider, also offering financial and permission planning. References:...

  14. Parabel AG | Open Energy Information

    Open Energy Info (EERE)

    search Name: Parabel AG Place: Berlin-Pankow, Berlin, Germany Sector: Solar Product: Sells a thin-film roofing product using UniSolar laminates, and distributes and...

  15. Sunline AG | Open Energy Information

    Open Energy Info (EERE)

    Sector: Solar Product: German solar PV and thermal company active in planning and marketing solar installations. References: Sunline AG1 This article is a stub. You can help...

  16. Solarion AG | Open Energy Information

    Open Energy Info (EERE)

    Germany Zip: 4288 Sector: Solar Product: Focuses on the development, production and marketing of CIGS thin-film solar cells on flexible substrate. References: Solarion AG1 This...

  17. Ristma AG | Open Energy Information

    Open Energy Info (EERE)

    search Name: Ristma AG Place: GlisVS, Switzerland Zip: 3902 Product: Swiss battery pack manufacturer primarily for the handheld cordless power tool market. It is laos...

  18. Gorlitz AG | Open Energy Information

    Open Energy Info (EERE)

    Sector: Services Product: Company providing products and services in energy data communication and processing. References: Gorlitz AG1 This article is a stub. You can help...

  19. Ecodasa AG | Open Energy Information

    Open Energy Info (EERE)

    AG Place: Berlin, Berlin, Germany Zip: 13435 Product: Ecodasa is an integrated biodiesel producer with a planned capacity of 774m litres biodiesel until 2008. References:...

  20. Carpevigo AG | Open Energy Information

    Open Energy Info (EERE)

    Name: Carpevigo AG Place: Holzkirchen, Germany Zip: 83607 Product: Carpevigo is a German turnkey PV project developer that issues bonds to finance investments. References:...

  1. Sunways AG | Open Energy Information

    Open Energy Info (EERE)

    Constance, Germany Zip: D-78467 Product: German manufacturer of PV cells, modules, inverters and integrated systems. References: Sunways AG1 This article is a stub. You can...

  2. Solemaxx AG | Open Energy Information

    Open Energy Info (EERE)

    search Name: Solemaxx AG Place: Zug, Switzerland Zip: CH-6300 Sector: Renewable Energy, Solar Product: Switzerland-based solar project developer and renewable energy...

  3. Meeco AG | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Name: meeco AG Place: Zug, Switzerland Zip: 6304 Sector: Renewable Energy Product: Switzerland-based company that offers engineering and management solutions in...

  4. Solarpraxis AG | Open Energy Information

    Open Energy Info (EERE)

    Publishes technical journals and organises conferences in building services, the copper industry and solar technology. References: Solarpraxis AG1 This article is a stub....

  5. AG Land 5 | Open Energy Information

    Open Energy Info (EERE)

    5 Jump to: navigation, search Name AG Land 5 Facility AG Land 5 Sector Wind energy Facility Type Community Wind Facility Status In Service Owner AG Land Energy LLC Developer...

  6. Bosch Solar Energy AG | Open Energy Information

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    Bosch Solar Energy AG Jump to: navigation, search Logo: Bosch Solar Energy AG Name: Bosch Solar Energy AG Address: Wilhelm-Wolff-Strasse 23 Place: Arnstadt, Germany Product: solar...

  7. American Ag Fuels LLC | Open Energy Information

    Open Energy Info (EERE)

    American Ag Fuels LLC Jump to: navigation, search Name: American Ag Fuels LLC Place: Defiance, Ohio Zip: 43512 Product: Biodiesel producer in Defiance, Ohio. References: American...

  8. Bernried Erdwarme AG | Open Energy Information

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    Bernried Erdwarme AG Jump to: navigation, search Name: Bernried Erdwarme AG Place: Germany Sector: Geothermal energy Product: Germany-based geothermal development company....

  9. SolarHybrid AG | Open Energy Information

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    SolarHybrid AG Jump to: navigation, search Name: SolarHybrid AG Place: Germany Sector: Solar Product: Germany-based solar thermal hybrid product manufacturer References:...

  10. REpower Systems AG | Open Energy Information

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    Systems AG Jump to: navigation, search Name: REpower Systems AG Place: Hamburg, Germany Zip: D-22297 Sector: Services, Wind energy Product: Wind turbine manufacturer with...

  11. In Trust AG | Open Energy Information

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    Trust AG Jump to: navigation, search Name: in-Trust AG Place: Regensburg, Bavaria, Germany Zip: 93047 Product: Germany-based investment company focused mainly on investing in...

  12. SolarWorld AG | Open Energy Information

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    SolarWorld AG Jump to: navigation, search Name: SolarWorld AG Place: Bonn, Germany Zip: 53113 Product: Vertically integrated PV manufacturer, with factories in Freiberg, Germany...

  13. Krass Capital Group AG | Open Energy Information

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    Krass Capital Group AG Jump to: navigation, search Name: Krass Capital Group AG Place: Grfelfing, Bulgaria Zip: 82166 Sector: Renewable Energy Product: Grafelfing-based firm...

  14. Solar Millennium AG | Open Energy Information

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    AG Jump to: navigation, search Name: Solar Millennium AG Place: Erlangen, Bavaria, Germany Zip: D-91052 Sector: Solar Product: Bavaria-based solar project developer; provides...

  15. Nature Elements Holding AG | Open Energy Information

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    Holding AG Jump to: navigation, search Name: Nature Elements Holding AG Place: Baar, Switzerland Zip: CH-6340 Sector: Renewable Energy Product: Swiss developer of renewable energy...

  16. Meyer Burger AG | Open Energy Information

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    Meyer Burger AG Jump to: navigation, search Name: Meyer Burger AG Place: Steffisburg, Switzerland Zip: 3613 Sector: Solar Product: Manufactures wire saws for cutting and processing...

  17. ENRO Geothermie AG | Open Energy Information

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    ENRO Geothermie AG Jump to: navigation, search Name: ENRO Geothermie AG Place: Essen, North Rhine-Westphalia, Germany Zip: 45128 Sector: Geothermal energy Product: Geothermal...

  18. Centrotec Sustainable AG | Open Energy Information

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    Sustainable AG Jump to: navigation, search Name: Centrotec Sustainable AG Place: Brilon, Germany Zip: D - 59929 Sector: Solar Product: Provides gas flue and climate systems for...

  19. Energie AG Oberoesterreich | Open Energy Information

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    Energie AG Oberoesterreich Jump to: navigation, search Name: Energie AG Oberoesterreich Place: Linz, Austria Zip: 4021 Product: Utility focused on Upper Austria. Coordinates:...

  20. AGO AG Energie Anlagen | Open Energy Information

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    AGO AG Energie Anlagen Jump to: navigation, search Name: AGO AG Energie + Anlagen Place: Kulmbach, Baden-Wrttemberg, Germany Zip: 95326 Sector: Biomass Product: Project...

  1. ABO Wind AG | Open Energy Information

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    AG Jump to: navigation, search Name: ABO Wind AG Place: Hessen, Germany Zip: 65193 Sector: Bioenergy, Wind energy Product: German developer of wind and bioenergy generation assets....

  2. Seeger Engineering AG | Open Energy Information

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    AG Jump to: navigation, search Name: Seeger Engineering AG Place: Hessisch Lichtenau, Hessen, Germany Zip: 37235 Sector: Biomass, Services Product: Services range from project...

  3. SITIZN Group Holding AG | Open Energy Information

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    SITIZN Group Holding AG Jump to: navigation, search Name: SITIZN Group Holding AG Place: Riederich, Germany Zip: 72585 Sector: Solar Product: Germany-based solar technology and...

  4. AG Solutions Inc | Open Energy Information

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    navigation, search Name: AG Solutions Inc. Place: Gladstone, Michigan Product: 10Mgpy biodiesel producer in Gladstone, Michigan. References: AG Solutions Inc.1 This article is a...

  5. EOP Biodiesel AG | Open Energy Information

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    EOP Biodiesel AG Jump to: navigation, search Name: EOP Biodiesel AG Place: Falkenhagen, Germany Zip: 16928 Product: German producer of biodiesel from rapeseed. References: EOP...

  6. Clean Mobile AG | Open Energy Information

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    AG Place: Munich, Bavaria, Germany Sector: Vehicles Product: Manufacturer of fuel cell-powered drives for small vehicles. References: Clean Mobile AG1 This article is a...

  7. Offshore Ostsee Wind AG | Open Energy Information

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    Ostsee Wind AG Jump to: navigation, search Name: Offshore Ostsee Wind AG Place: Brgerende, Mecklenburg-Western Pomerania, Germany Zip: 18211 Sector: Wind energy Product: Joint...

  8. Edisun Power AG | Open Energy Information

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    AG Place: Zurich, Switzerland Zip: 8006 Sector: Solar Product: Edisun Power Europe AG finances, acquires and operates solar power installations, and markets solar power....

  9. Sonne Wind Beteiligungen AG | Open Energy Information

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    AG Jump to: navigation, search Name: Sonne+Wind Beteiligungen AG Place: Berlin, Germany Zip: 10715 Sector: Efficiency, Solar, Wind energy Product: Berlin-based VC firm...

  10. Power PLUS Communications AG | Open Energy Information

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    PLUS Communications AG Jump to: navigation, search Name: Power PLUS Communications AG Place: Mannheim, Germany Zip: 68167 Product: String representation "Power Plus Comm ... nergy...

  11. ADM Hamburg AG | Open Energy Information

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    ADM Hamburg AG Jump to: navigation, search Name: ADM Hamburg AG Place: Hamburg, Hamburg, Germany Zip: 21107 Product: Biodiesel producer with a capacity of 595m litresyear....

  12. Norddeutsche Affinerie AG | Open Energy Information

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    Affinerie AG Jump to: navigation, search Name: Norddeutsche Affinerie AG Place: Hamburg, Germany Zip: 20539 Product: Producer and recycler of copper. Coordinates: 53.553345,...

  13. Centrosolar Group AG | Open Energy Information

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    Group AG Jump to: navigation, search Name: Centrosolar Group AG Place: Munich, Germany Zip: 80807 Product: German holding company of various PV-related subsidiaries....

  14. ASSET LOGISTIC AG | Open Energy Information

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    LOGISTIC AG Jump to: navigation, search Name: ASSET@LOGISTIC AG Place: Hamburg, Hamburg, Germany Zip: 20148 Sector: Wind energy Product: Developer of 3 wind farms in Almeria,...

  15. Swiss Wafers AG | Open Energy Information

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    Wafers AG Jump to: navigation, search Name: Swiss Wafers AG Place: Weinfelden, Switzerland Zip: 8570 Sector: Services Product: Swiss-based manufacturer of mono and multicrystalline...

  16. Module Solar AG | Open Energy Information

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    Module Solar AG Jump to: navigation, search Name: Module Solar AG Place: Baar, Switzerland Product: A Swiss PV module and materials supplier and developer Coordinates: 40.808083,...

  17. Huber and Suhner AG | Open Energy Information

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    Suhner AG Jump to: navigation, search Name: Huber and Suhner AG Place: Pfaeffikon, Switzerland Zip: 8330 Sector: Solar Product: Huber and Suhner specialises in electrical and...

  18. Novel Approaches to Wide Bandgap CuInSe2 Based Absorbers

    SciTech Connect (OSTI)

    William N. Shafarman

    2011-04-28

    This project targeted the development of high performance wide bandgap solar cells based on thin film alloys of CuInSe2 to relax constraints on module design and enable tandem solar cell structures. This addressed goals of the Solar Energy Technologies Program for Next Generation PV to develop technology needed for higher thin film module efficiency as a means to reduce costs. Specific objectives of the research project were: 1) to develop the processes and materials required to improve the performance of wide bandgap thin film solar cells based on alloys of CuInSe2, and 2) to provide the fundamental science and engineering basis for the material, electronic, and device properties required to effectively apply these processes and materials to commercial manufacture. CuInSe2-based photovoltaics have established the highest efficiencies of the thin film materials at both the cell and module scales and are actively being scaled up to commercialization. In the highest efficiency cells and modules, the optical bandgap, a function of the CuInSe2-based alloy composition, is relatively low compared to the optimum match to the solar spectrum. Wider bandgap alloys of CuInSe2 produce higher cell voltages which can improve module performance and enable the development of tandem solar cells to boost the overall efficiency. A focus for the project was alloying with silver to form (AgCu)(InGa)Se2 pentenary thin films deposited by elemental co-evaporation which gives the broadest range of control of composition and material properties. This alloy has a lower melting temperature than Ag-free, Cu-based chalcopyrite compounds, which may enable films to be formed with lower defect densities and the (AgCu)(InGa)Se2 films give improved material properties and better device performance with increasing bandgap. A comprehensive characterization of optical, structural, and electronic properties of (AgCu)(InGa)Se2 was completed over the complete compositional range 0 ≤ Ga/(In+Ga) ≤ 1 and

  19. Novel visible-light AgBr/Ag?PO? hybrids photocatalysts with surface plasma resonance effects

    SciTech Connect (OSTI)

    Wang, Yunfang Li, Xiuli; Wang, Yawen; Fan, Caimei

    2013-06-01

    Three kinds of AgBr/Ag?PO? hybrids were synthesised via an anion-exchange precipitation method and characterised by XRD, XPS, SEM, EDS, and UVvis. The results showed that AgBr/Ag?PO? hybrids displayed much higher photocatalytic activities than single Ag?PO? or AgBr under visible light (?>420 nm), and OH and h? were the major active species during the degradation process. Considering interstitial ions Ag?? on lattice gap of AgBr are easy to become sliver particle, we deduced the possible photocatalytic mechanism could be ascribed to the synergistic effects of the appropriate valence band position of Ag?PO? and AgBr, surface plasmon resonance effect of Ag?, reactive radical species Br?, and the Ag vacancy on the surface of catalysts. - Graphical abstract: The optical absorption and structural morphology of the as-prepared AgBr@Ag?PO? photocatalyst using an anion-exchange precipitation method are conductive to the photocatalytic degradation of organics in water. Highlights: Novel AgBr/Ag?PO? hybrids are synthesised by a facile method. AgBr/Ag?PO? hybrids show excellent photocatalytic activities under visible light. Interstitial ions are in favour of the formation of Ag particle. Surface plasmon resonance effect plays a key factor for light absorption. The photocatalytic mechanism for AgBr/Ag?PO? hybrids is studied.

  20. Structural and optical properties of Ag-doped copper oxide thin films on polyethylene napthalate substrate prepared by low temperature microwave annealing

    SciTech Connect (OSTI)

    Das, Sayantan; Alford, T. L.

    2013-06-28

    Silver doped cupric oxide thin films are prepared on polyethylene naphthalate (flexible polymer) substrates. Thin films Ag-doped CuO are deposited on the substrate by co-sputtering followed by microwave assisted oxidation of the metal films. The low temperature tolerance of the polymer substrates led to the search for innovative low temperature processing techniques. Cupric oxide is a p-type semiconductor with an indirect band gap and is used as selective absorption layer solar cells. X-ray diffraction identifies the CuO phases. Rutherford backscattering spectrometry measurements confirm the stoichiometry of each copper oxide formed. The surface morphology is determined by atomic force microscopy. The microstructural properties such as crystallite size and the microstrain for (-111) and (111) planes are calculated and discussed. Incorporation of Ag led to the lowering of band gap in CuO. Consequently, it is determined that Ag addition has a strong effect on the structural, morphological, surface, and optical properties of CuO grown on flexible substrates by microwave annealing. Tauc's plot is used to determine the optical band gap of CuO and Ag doped CuO films. The values of the indirect and direct band gap for CuO are found to be 2.02 eV and 3.19 eV, respectively.

  1. Systaic AG | Open Energy Information

    Open Energy Info (EERE)

    AG Place: Duesseldorf, North Rhine-Westphalia, Germany Zip: D-40213 Sector: Solar Product: Has developed and is installing a building-integrated PV roof, which can be used as...

  2. Sinosol AG | Open Energy Information

    Open Energy Info (EERE)

    Solar Product: Buys PV modules and solar passive systems in China and sells them in Europe. References: Sinosol AG1 This article is a stub. You can help OpenEI by expanding...

  3. Lake County Ag Park Greenhouse Low Temperature Geothermal Facility...

    Open Energy Info (EERE)

    Ag Park Greenhouse Low Temperature Geothermal Facility Jump to: navigation, search Name Lake County Ag Park Greenhouse Low Temperature Geothermal Facility Facility Lake County Ag...

  4. Kondo-lattice formation in cubic-phase YbCu{sub 5}

    SciTech Connect (OSTI)

    Tsujii, N.; He, J.; Amita, F.; Yoshimura, K.; Kosuge, K.; Michor, H.; Hilscher, G.; Goto, T.

    1997-10-01

    The YbCu{sub 5} phase with C15b structure has been prepared by a high-pressure technique, and its physical properties have been investigated. The temperature dependence of magnetic susceptibility, electrical resistivity, and specific heat show Kondo-lattice formation. Furthermore, a heavy Fermi-liquid state without magnetic ordering down to 2.0 K is found to evolve below about 6 K. The electronic specific heat coefficient {gamma} is enhanced to values as large as to 550 mJ/molthinspK{sup 2}. The magnetization measured up to 40 T at 1.6 K has a field dependence which is expected for a Kondo system when the total angular momentum is J{gt}1. All results are in good agreement with the extrapolation of the previous results of YbCu{sub 5{minus}x}Ag{sub x} (0.125{le}x{le}1.0) for x{r_arrow}0. The concentration dependence of characteristic temperatures of YbCu{sub 5{minus}x}Ag{sub x} can be quantitatively explained by the chemical pressure effect within the compressible Kondo model for the full range of Ag concentration ( 0.0{le}x{le}1.0). The origins of Kondo-lattice formation in YbCu{sub 4}Ag and the valence transition in YbCu{sub 4}In are discussed. {copyright} {ital 1997} {ital The American Physical Society}

  5. Development and Fabrication of Nb3Sn Rutherford Cable for the 11 T DS Dipole Demonstration Model

    SciTech Connect (OSTI)

    Barzi, E.; Lombardo, V.; Nobrega, F.; Turrioni, D.; Yamada, R.; Zlobin, A.V.; Karppinen, M.; /CERN

    2011-11-30

    Fermilab and CERN started the development of 11 T 11-m long Nb{sub 3}Sn dipoles to replace few regular LHC NbTi dipoles and free space for cold collimators in LHC DS areas. An important step in the design of these magnets is the development of the high aspect ratio Nb{sub 3}Sn cable to achieve the nominal field of 11 T at the nominal LHC operating current of 11.85 kA with 20% margin. The keystoned cables 14.7 mm wide with and without a stainless steel core were made out of hard Cu wires and Nb{sub 3}Sn RRP strand 0.7 mm nominal diameter. The cable optimization process was aimed at achieving both mechanical stability and minimal damage to the delicate internal architecture of the Restacked-Rod-Process (RRP) Nb{sub 3}Sn strands with 127 restack design to be used in the magnet short models. Each cable was characterized electrically for transport properties degradation at high field and for low field stability, and metallographically for internal damage.

  6. Payom Solar AG | Open Energy Information

    Open Energy Info (EERE)

    Payom Solar AG Jump to: navigation, search Name: Payom Solar AG Place: Merkendorf, Germany Zip: 91732 Product: Germany-based installer of roof-mounted PV plants, which also trades...

  7. Sol e Suisse AG | Open Energy Information

    Open Energy Info (EERE)

    Suisse AG Jump to: navigation, search Name: Sol-e Suisse AG Place: Berne, Switzerland Zip: 25 Sector: Renewable Energy Product: Renewable energy division of BKW FMB Energy Ltd....

  8. Ag Fuels Ltd | Open Energy Information

    Open Energy Info (EERE)

    to: navigation, search Name: Ag Fuels Ltd Place: Sealy, Texas Product: 3.6Mgpl (13.6Mlpy) biodiesel producer in Sealy, Texas. References: Ag Fuels Ltd1 This article is a stub....

  9. SGL Carbon AG | Open Energy Information

    Open Energy Info (EERE)

    Carbon AG Jump to: navigation, search Name: SGL Carbon AG Place: Wiesbaden, Hessen, Germany Zip: 65203 Sector: Carbon Product: A Germany-based manufacturer of carbon-based products...

  10. AgPro | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: AgPro Place: Massena, New York Product: Operator of biodiesel plant based on soy. References: AgPro1 This article is a stub. You can help OpenEI...

  11. MAN Ferrostaal AG | Open Energy Information

    Open Energy Info (EERE)

    AG Jump to: navigation, search Name: MAN Ferrostaal AG Place: Essen, Germany Zip: 45128 Sector: Solar Product: Germany-based firm that focuses on the development and realisation of...

  12. AGS 20th anniversary celebration

    SciTech Connect (OSTI)

    Baggett, N.V.

    1980-05-22

    On May 22, 1980, a symposium was held at Brookhaven to celebrate the 20th birthday of the AGS, to recall its beginnings, and to review major discoveries that have been made with its beams. The talks at the symposium are recorded in this volume.

  13. Thermochemical process for recovering Cu from CuO or CuO.sub.2

    DOE Patents [OSTI]

    Richardson, deceased, Donald M.; Bamberger, Carlos E.

    1981-01-01

    A process for producing hydrogen comprises the step of reacting metallic Cu with Ba(OH).sub.2 in the presence of steam to produce hydrogen and BaCu.sub.2 O.sub.2. The BaCu.sub.2 O.sub.2 is reacted with H.sub.2 O to form Cu.sub.2 O and a Ba(OH).sub.2 product for recycle to the initial reaction step. Cu can be obtained from the Cu.sub.2 O product by several methods. In one embodiment the Cu.sub.2 O is reacted with HF solution to provide CuF.sub.2 and Cu. The CuF.sub.2 is reacted with H.sub.2 O to provide CuO and HF. CuO is decomposed to Cu.sub.2 O and O.sub.2. The HF, Cu and Cu.sub.2 O are recycled. In another embodiment the Cu.sub.2 O is reacted with aqueous H.sub.2 SO.sub.4 solution to provide CuSO.sub.4 solution and Cu. The CuSO.sub.4 is decomposed to CuO and SO.sub.3. The CuO is decomposed to form Cu.sub.2 O and O.sub.2. The SO.sub.3 is dissolved to form H.sub.2 SO.sub.4. H.sub.2 SO.sub.4, Cu and Cu.sub.2 O are recycled. In another embodiment Cu.sub.2 O is decomposed electrolytically to Cu and O.sub.2. In another aspect of the invention, Cu is recovered from CuO by the steps of decomposing CuO to Cu.sub.2 O and O.sub.2, reacting the Cu.sub.2 O with aqueous HF solution to produce Cu and CuF.sub.2, reacting the CuF.sub.2 with H.sub.2 O to form CuO and HF, and recycling the CuO and HF to previous reaction steps.

  14. DB-Netz AG Offices

    High Performance Buildings Database

    Hamm, Germany The new office building for DB Netz AG was designed by the collaborative team of Architrav Architects and the Buildings Physics and Technical Building Services group of the University of Karlsruhe. The team developed an energy efficient building concept for the 64,304 sqft office building, located in Hamm, Germany. The design concept of the building is dominated by architectural solutions for ventilation, cooling and lighting. Use of HVAC and electric lighting is minimized as much as possible.

  15. Review of dWindDS Model Initial Results; NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    Baring-Gould, Ian; Gleason, Michael; Preus, Robert; Sigrin, Ben

    2015-06-17

    The dWindDS model analyses the market diffusion of distributed wind generation for behind the meter applications. It is consumer decision based and uses a variety of data sets including a high resolution wind data set. It projects market development through 2050 based on input on specified by the user. This presentation covers some initial runs with draft base case assumptions.

  16. Solar Deployment System (SolarDS) Model: Documentation and Sample Results

    SciTech Connect (OSTI)

    Denholm, P.; Drury, E.; Margolis, R.

    2009-09-01

    The Solar Deployment System (SolarDS) model is a bottom-up, market penetration model that simulates the potential adoption of photovoltaics (PV) on residential and commercial rooftops in the continental United States through 2030. NREL developed SolarDS to examine the market competitiveness of PV based on regional solar resources, capital costs, electricity prices, utility rate structures, and federal and local incentives. The model uses the projected financial performance of PV systems to simulate PV adoption for building types and regions then aggregates adoption to state and national levels. The main components of SolarDS include a PV performance simulator, a PV annual revenue calculator, a PV financial performance calculator, a PV market share calculator, and a regional aggregator. The model simulates a variety of installed PV capacity for a range of user-specified input parameters. PV market penetration levels from 15 to 193 GW by 2030 were simulated in preliminary model runs. SolarDS results are primarily driven by three model assumptions: (1) future PV cost reductions, (2) the maximum PV market share assumed for systems with given financial performance, and (3) PV financing parameters and policy-driven assumptions, such as the possible future cost of carbon emissions.

  17. Determining System Parameters for Optimal Performance of Hybrid DS/FFH Spread-Spectrum

    SciTech Connect (OSTI)

    Ma, Xiao [ORNL; Olama, Mohammed M [ORNL; Kuruganti, Phani Teja [ORNL; Smith, Stephen Fulton [ORNL; Djouadi, Seddik M [ORNL

    2012-01-01

    In recent years there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their use in military communications because they accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct sequence (DS) modulation with "fast" frequency hopping (FFH), denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper, an optimization problem is formulated that maximizes the DS/FFH communication system performance in terms of probability of bit error and solves for the system design parameters. The objective function is non-convex and can be solved by applying the Karush-Kuhn-Tucker conditions. System design parameters of interest are the length of the DS code sequence, number of frequency hopping channels, number of channels corrupted by wide-band jamming, and number of hops per bit. The proposed formulation takes into account the effects from wide-band and partial-band jamming, multi-user interference and/or varying degrees of Rayleigh and Rician multipath fading. Numerical results are presented to demonstrate the method s viability.

  18. Using Tensor Momentum Dependent Deuteron Potential to Extract the Asymptotic D/S Ratio

    SciTech Connect (OSTI)

    Emad El-Deen, A. Sultan; Mustafa, Mustafa M.; Zahran, Elbadry S.

    2010-09-30

    A new value for the deuteron asymptotic D/S ratio {eta} = 0.02640{+-}0.00024 is extracted from an empirical linear {eta}-Q relation found for a class of deuteron momentum dependent potentials with tensor momentum dependent part. These potentials fit a recently published phase shift analysis and the binding energy of the deuteron.

  19. Facile synthesis of Ag–Cu{sub 2}O composites with enhanced photocatalytic activity

    SciTech Connect (OSTI)

    Yang, Jianbo; Li, Zhen; Zhao, Caixin; Wang, Yang; Liu, Xueqin

    2014-12-15

    Highlights: • Ag–Cu{sub 2}O nanocomposites were synthesized via awet-chemical precipitation route. • The growth temperature does not exceed 50 °C in any step of the synthesis. • Enhanced photocurrent of Ag–Cu{sub 2}O composites, compared to pure Cu{sub 2}O particles. • The photocatalytic property was studied upon simulated sunlight. • Enhanced photocatalytic property of Ag–Cu{sub 2}O composites, compared to pure Cu{sub 2}O particles. - Abstract: Silver–cuprous oxide (Ag–Cu{sub 2}O) microcomposites are successfully prepared by a facile low-cost solution method. The obtained materials were characterized by X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDX), field emission scanning electron microscopy (FESEM), ultraviolet–visible (UV–vis) spectroscopy, X-ray photoelectron spectroscopy (XPS). Experiments demonstrated that the formation of Ag–Cu{sub 2}O microcomposites was significantly influenced by the concentration of AgNO{sub 3}, and with increasing the concentration of AgNO{sub 3}, the optical absorption of the composites becomes strong. The photocatalytic activity of the prepared Ag–Cu{sub 2}O composites was determined by measuring the degradation of methyl orange solution under visible light, to find out its potential application in waste water treatment. The results reveal that the photocurrent of the composite is about 4 times higher than that of pure Cu{sub 2}O and the visible light photocatalytic activity of the composite is enhanced greatly on degradation of methyl orange. The reason for improvement in photocatalytic activity of the Ag–Cu{sub 2}O composites was also discussed.

  20. 3S Industries AG Formerly 3S Swiss Solar Systems AG | Open Energy...

    Open Energy Info (EERE)

    search Name: 3S Industries AG (Formerly 3S Swiss Solar Systems AG) Place: Bern, Switzerland Zip: CH-3006 Product: Swiss-based manufacturer of manual and semi-automatic PV...

  1. Inventux Technologies AG | Open Energy Information

    Open Energy Info (EERE)

    AG Place: Steinhagen, Germany Zip: D-33803 Product: German manufacturer of micromorph tandem thin-film modules. Coordinates: 52.004606, 8.414257 Show Map Loading map......

  2. Unit Energy Europe AG | Open Energy Information

    Open Energy Info (EERE)

    Wind energy Product: Unit Energy develops and operates wind parks and hydroelectric power plants all across Europe. References: Unit Energy Europe AG1 This article is a stub....

  3. BGZ Beteiligungsgesellschaft Zukunftsenergien AG | Open Energy...

    Open Energy Info (EERE)

    Zukunftsenergien AG Place: Husum, Germany Zip: 25813 Sector: Solar, Wind energy Product: Finance and management holding, esp. for wind and solar projects....

  4. Ag Processing Inc AGP | Open Energy Information

    Open Energy Info (EERE)

    Nebraska Zip: 68103-2047 Product: Cooperative engaged in the procurement, processing, marketing, and transportation of grains and grain products. References: Ag Processing Inc....

  5. Husker Ag LLC | Open Energy Information

    Open Energy Info (EERE)

    search Name: Husker Ag LLC Place: Plainview, Nebraska Zip: 68769 Product: Bioethanol producer using corn as feedstock. Coordinates: 34.197675, -101.698139 Show Map...

  6. Enginion AG insolvent | Open Energy Information

    Open Energy Info (EERE)

    (CHP) systems. The company's SteamCell product is targeted at the residential, automotive and portable power markets. References: Enginion AG (insolvent )1 This article is...

  7. MAMA Sustainable Incubation AG | Open Energy Information

    Open Energy Info (EERE)

    for emerging green-markets such as renewable energy, sustainable architecture and water treatment. References: MAMA Sustainable Incubation AG1 This article is a stub. You...

  8. Centrotherm Photovoltaics AG | Open Energy Information

    Open Energy Info (EERE)

    AG Place: Blaubeuren, Germany Zip: 89143 Sector: Services Product: Provides turnkey manufacturing equipment for crystalline silicon PV cells, and Siemens reactors and engineering...

  9. LEONI Studer AG | Open Energy Information

    Open Energy Info (EERE)

    Studer AG Place: Daniken, Switzerland Zip: 4658 Product: Switzerland-based cable manufacturing firm. The firm also produces PV junction boxes. Coordinates: 50.966671, 5.85...

  10. SolarMarkt AG | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Name: SolarMarkt AG Place: Freiburg, Germany Zip: 79114 Product: A German PV installation company for small to mid-sized projects and BIPV. References:...

  11. Bullith Batteries AG | Open Energy Information

    Open Energy Info (EERE)

    Batteries AG Place: Ismaning, Germany Zip: 85737 Product: Batteries producer using the lithium-polymer technology. Coordinates: 48.22727, 11.676305 Show Map Loading map......

  12. Solar Fabrik AG | Open Energy Information

    Open Energy Info (EERE)

    Zip: 79111 Product: Freiburg-based manufacturer of wafers, PV cells, modules and inverters, largely through acquisitions. References: Solar Fabrik AG1 This article is a...

  13. EnerVest AG | Open Energy Information

    Open Energy Info (EERE)

    search Name: EnerVest AG Place: Mnchen, Germany Zip: 80538 Sector: Renewable Energy, Wind energy Product: EnerVest develops and manages renewable energy projects,...

  14. Denker Wulf AG | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Name: Denker & Wulf AG Place: Sehestedt, Germany Zip: 24814 Sector: Wind energy Product: Wind project developer, also provides innovative wind energy financing....

  15. EnergieKontor AG | Open Energy Information

    Open Energy Info (EERE)

    search Name: EnergieKontor AG Place: Bremen, Bremen, Germany Zip: 28359 Sector: Wind energy Product: Bremen-based european wind project developer and wind farm operator....

  16. AG Plus Co operative | Open Energy Information

    Open Energy Info (EERE)

    Plus Co operative Jump to: navigation, search Name: AG Plus Co-operative Place: SE Kindred, North Dakota Zip: 58051 Product: Cooperative offering membership stock to agricultural...

  17. Getec AG Contracting | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Getec AG Contracting Place: Magdeburg, Saxony-Anhalt, Germany Zip: 39108 Sector: Efficiency Product: German Efficiency Service Company....

  18. 3C Holding AG | Open Energy Information

    Open Energy Info (EERE)

    am Main, Germany Zip: 61118 Sector: Services Product: 3C Holding AG develops trading strategies for EU allowances, JICDM Projects and climate neutral events, products...

  19. Energiecontracting Heidelberg AG ECH | Open Energy Information

    Open Energy Info (EERE)

    Baden-Wrttemberg, Germany Zip: 69126 Product: Consultancy specialised in local energy supply. References: Energiecontracting Heidelberg AG (ECH)1 This article is a...

  20. TriWo AG | Open Energy Information

    Open Energy Info (EERE)

    TriWo AG Place: Trier, Denmark Zip: 54290 Sector: Solar Product: Developer of solar photovoltaic electricity generation project in Germany. Coordinates: 49.757256, 6.636521...

  1. ASP Aton Sunpower AG | Open Energy Information

    Open Energy Info (EERE)

    Zug, Switzerland Product: Zug-based project developer focused on the installaion of photovoltaic facilities. References: ASP Aton Sunpower AG1 This article is a stub. You can...

  2. Energiedienst Holding AG EDH | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Energiedienst Holding AG (EDH) Place: Laufenburg, Switzerland Zip: 5080 Product: Utility active in Switzerland and Germany. Coordinates:...

  3. Sunseeker Energy Holding AG | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Sunseeker Energy Holding AG Place: Schindellegi, Switzerland Zip: 8834 Sector: Solar Product: Switzerland-based company seeking to developing...

  4. Pegasus Energietechnik AG | Open Energy Information

    Open Energy Info (EERE)

    AG Place: Mhldorf am Inn, Germany Zip: 84453 Sector: Renewable Energy Product: Germany-based renewable energy developer assisting with projects in Europe. References:...

  5. Stangl Semiconductor Equipment AG | Open Energy Information

    Open Energy Info (EERE)

    German manufacturer of wet chemistry systems for processing silicon and thin-film solar cells. References: Stangl Semiconductor Equipment AG1 This article is a stub. You...

  6. Ag

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

    or concentration of uranium or thorium from any ore processed primarily for its ... ''source material'' means (1) uranium, thorium, or any other material which is ...

  7. EA-263 UBS AG, London Branch | Department of Energy

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

    EA-263 UBS AG, London Branch Order authorizing UBS AG, London Branch to export electric energy to Mexico. PDF icon EA-263 UBS AG, London Branch More Documents & Publications EA-232 ...

  8. Effect of mechanical deformation on the evolution of c-axis texture of Bi{sub 1.6}Pb{sub 0.4}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub z} superconductor HIP cladded on Ag substrate

    SciTech Connect (OSTI)

    Yoo, J.M.; Mukherjee, K.

    1994-12-31

    The c-axis texture evolution of 2223 BSCCO superconductor has been studied by x-ray polefigure method, using ``popLA`` software package, which can elucidate the evolution of texture associated with mechanical processing of BSCCO compound. The specimens were fabricated on Ag substrate by a HIP cladding technique to induce randomly oriented state as the starting material, and to investigate the role of non (001) grain during deformation. As the amount of cold rolling reduction (%) increased, a tighter clustering of the (00{und 14}) poles around the surface normal, indicated that randomly oriented c-axes` grains from initial HIP cladded surface rotated towards the normal direction. In addition (105), (109), and (110) experimental polefigure studies indicated that under deformation, those plane normals tend to form a fiber texture around the compression direction of rolling (normal direction). After achieving certain degrees of texturing, saturation due to textural hardening was also observed. Detailed texture analysis, along with inverse polefigure, and microstructure analysis are reported.

  9. Visible light driven photocatalysis and antibacterial activity of AgVO{sub 3} and Ag/AgVO{sub 3} nanowires

    SciTech Connect (OSTI)

    Singh, Anamika; Dutta, Dimple P.; Ballal, A.; Tyagi, A.K.; Fulekar, M.H.

    2014-03-01

    Graphical abstract: - Highlights: Ag/AgVO{sub 3} and pure AgVO{sub 3} nanowires synthesized by sonochemical process. Characterization done using XRD, SEM, TEM, EDX and BET analysis. Visible light degradation of RhB by Ag/AgVO{sub 3} within 45 min. Antibacterial activity of Ag/AgVO{sub 3} demonstrated. - Abstract: Ag/AgVO{sub 3} nanowires and AgVO{sub 3} nanorods were synthesized in aqueous media via a facile sonochemical route. The as-synthesized products were characterized by X-ray diffraction, BrunauerEmmettTeller surface area analysis, scanning electron microscopy together with an energy dispersion X-ray spectrum analysis, transmission electron microscopy and UVvis diffuse reflectance spectroscopy. The results revealed that inert atmosphere promotes the formation of Ag/AgVO{sub 3} nanowires. The photocatalytic studies revealed that the Ag/AgVO{sub 3} nanowires exhibited complete photocatalytic degradation of Rhodamine B within 45 min under visible light irradiation. The antibacterial activity of Ag/AgVO{sub 3} nanowires was tested against Escherechia coli and Bacillus subtilis. The minimum growth inhibitory concentration value was found to be 50 and 10 folds lower than for the antibiotic ciprofloxacin for E. coli and B. subtilis, respectively. The antibacterial properties of the ?-AgVO{sub 3} nanorods prove that in case of the Ag dispersed Ag/AgVO{sub 3} nanowires, the enhanced antibacterial action is also due to contribution from the AgVO{sub 3} support.

  10. Alpen Adria Energie AG AAE | Open Energy Information

    Open Energy Info (EERE)

    Alpen Adria Energie AG AAE Jump to: navigation, search Name: Alpen Adria Energie AG (AAE) Place: Ktschach Mauthen, Austria Zip: 9640 Sector: Renewable Energy Product: Utility...

  11. RENERCO Renewable Energy Concepts AG | Open Energy Information

    Open Energy Info (EERE)

    RENERCO Renewable Energy Concepts AG Jump to: navigation, search Name: RENERCO Renewable Energy Concepts AG Place: Munich, Germany Zip: D-80336 Sector: Renewable Energy Product:...

  12. Gamesa Energie Deutschland formerly EBV Management Holding AG...

    Open Energy Info (EERE)

    Energie Deutschland formerly EBV Management Holding AG Jump to: navigation, search Name: Gamesa Energie Deutschland (formerly EBV Management Holding AG) Place: Oldenburg, Germany...

  13. European Energy Exchange AG EEX | Open Energy Information

    Open Energy Info (EERE)

    Energy Exchange AG EEX Jump to: navigation, search Name: European Energy Exchange AG (EEX) Place: Leipzig, Germany Zip: D-04109 Product: Germany's energy exchange, which aims to...

  14. Mepsolar AG aka Munich Energy Partners | Open Energy Information

    Open Energy Info (EERE)

    AG aka Munich Energy Partners Jump to: navigation, search Name: Mepsolar AG (aka Munich Energy Partners) Place: Munich, Germany Zip: 81829 Product: Develops utility scale PV...

  15. GATE Global Alternative Energy Holding AG | Open Energy Information

    Open Energy Info (EERE)

    Energy Holding AG Place: Wrzburg, Bavaria, Germany Zip: 97080 Product: Germany-based biodiesel producer. References: GATE Global Alternative Energy Holding AG1 This article...

  16. Design, Implementation, and Evaluation of a Hybrid DS/FFH Spread-Spectrum Radio Transceiver

    SciTech Connect (OSTI)

    Olama, Mohammed M.; Killough, Stephen M.; Kuruganti, Teja; Carroll, Thomas E.

    2014-10-06

    In recent years there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their inherent uses in military communications. This is because HSS can accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct-sequence modulation with "fast" frequency-hopping, denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper, we present the efforts carried out at Oak Ridge National Laboratory toward exploring the design, implementation, and evaluation of a hardware prototypic hybrid DS/FFH spread-spectrum radio transceiver using a single Field Programmable Gate Array (FPGA). The high integration within a single FPGA allows the various subsystems to easily communicate with each other and thereby maintain tight synchronization. We investigate various hopping sequences against robustness to interference and jamming. Experimental results are presented to show the receiver sensitivity, radio data rate evaluation, and jamming-rejection capability of the implemented hybrid DS/FFH spread-spectrum system under widely varying design parameters.

  17. Design, Implementation, and Evaluation of a Hybrid DS/FFH Spread-Spectrum Radio Transceiver

    SciTech Connect (OSTI)

    Olama, Mohammed M; Killough, Stephen M; Kuruganti, Teja; Carroll, Thomas E.

    2014-01-01

    In recent years there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their inherent uses in military communications. This is because HSS can accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct-sequence modulation with "fast" frequency-hopping, denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper, we present the efforts carried out at Oak Ridge National Laboratory toward exploring the design, implementation, and evaluation of a hybrid DS/FFH spread-spectrum radio transceiver using a single Field Programmable Gate Array (FPGA). The FPGA allows the various subsystems to quickly communicate with each other and thereby maintain tight synchronization. We also investigate various hopping sequences against robustness to interference and jamming. Experimental results are presented that show the receiver sensitivity, radio data-rate/bit-error evaluations, and jamming and interference rejection capabilities of the implemented hybrid DS/FFH spread-spectrum system under widely varying design parameters.

  18. City Solar AG | Open Energy Information

    Open Energy Info (EERE)

    services for large-scale PV power plants, also has a division called City Solar Invest to develop its own plants. References: City Solar AG1 This article is a stub. You...

  19. SolarTec AG | Open Energy Information

    Open Energy Info (EERE)

    SolarTec AG Place: Munich, Bavaria, Germany Product: Developing a technology it calls Sol*Con- 700x Fresnel concentrators for use with gallium arsenide or germanium cells, also...

  20. Bos ten AG | Open Energy Information

    Open Energy Info (EERE)

    Place: Regensburg-Westenviertel, Germany Zip: 93049 Sector: Solar Product: Partner of Beck Energy in development of a 3.2MW solar PV plant. References: Bos.ten AG1 This article...

  1. AG Land 1 | Open Energy Information

    Open Energy Info (EERE)

    LLC Developer AG Land Energy LLC Energy Purchaser Alliant Energy Location Story County IA Coordinates 42.145531, -93.432161 Show Map Loading map... "minzoom":false,"mappings...

  2. AG Land 4 | Open Energy Information

    Open Energy Info (EERE)

    LLC Developer AG Land Energy LLC Energy Purchaser Alliant Energy Location Story County IA Coordinates 42.206397, -93.325714 Show Map Loading map... "minzoom":false,"mappings...

  3. AG Land 2 | Open Energy Information

    Open Energy Info (EERE)

    LLC Developer AG Land Energy LLC Energy Purchaser Alliant Energy Location Story County IA Coordinates 41.904231, -93.354864 Show Map Loading map... "minzoom":false,"mappings...

  4. AG Land 3 | Open Energy Information

    Open Energy Info (EERE)

    LLC Developer AG Land Energy LLC Energy Purchaser Alliant Energy Location Story County IA Coordinates 42.146061, -93.428028 Show Map Loading map... "minzoom":false,"mappings...

  5. Multi Contact AG | Open Energy Information

    Open Energy Info (EERE)

    firm in the field of renewable energy, produces Solarline - connector systems for photovoltaics. References: Multi-Contact AG1 This article is a stub. You can help OpenEI by...

  6. Sputnik Engineering AG | Open Energy Information

    Open Energy Info (EERE)

    Zip: CH-2502 Sector: Solar Product: Manufacturer of SolarMax grid tie inverters for photovoltaic applications. References: Sputnik Engineering AG1 This article is a stub. You can...

  7. SES 21 AG | Open Energy Information

    Open Energy Info (EERE)

    Place: OderdingPolling, Germany Zip: 82398 Sector: Solar Product: A distributor of photovoltaic and solar thermal systems in Germany. References: SES 21 AG1 This article is a...

  8. Solar Power Partners AG | Open Energy Information

    Open Energy Info (EERE)

    Solar Product: Small Solar project developer with projects located in South Africa and France. References: Solar Power Partners AG1 This article is a stub. You can help OpenEI by...

  9. E ON AG | Open Energy Information

    Open Energy Info (EERE)

    E.ON AG Place: Dusseldorf, North Rhine-Westphalia, Germany Zip: 40479 Sector: Renewable Energy Product: Dusseldorf-based company that operates as a public utility in the...

  10. How important is self-consistency for the dDsC density dependent dispersion correction?

    SciTech Connect (OSTI)

    Brémond, Éric; Corminboeuf, Clémence; Golubev, Nikolay; Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow 119991 ; Steinmann, Stephan N.

    2014-05-14

    The treatment of dispersion interactions is ubiquitous but computationally demanding for seamless ab initio approaches. A highly popular and simple remedy consists in correcting for the missing interactions a posteriori by adding an attractive energy term summed over all atom pairs to standard density functional approximations. These corrections were originally based on atom pairwise parameters and, hence, had a strong touch of empiricism. To overcome such limitations, we recently proposed a robust system-dependent dispersion correction, dDsC, that is computed from the electron density and that provides a balanced description of both weak inter- and intramolecular interactions. From the theoretical point of view and for the sake of increasing reliability, we here verify if the self-consistent implementation of dDsC impacts ground-state properties such as interaction energies, electron density, dipole moments, geometries, and harmonic frequencies. In addition, we investigate the suitability of the a posteriori scheme for molecular dynamics simulations, for which the analysis of the energy conservation constitutes a challenging tests. Our study demonstrates that the post-SCF approach in an excellent approximation.

  11. Modeling Sensitivities to the 20% Wind Scenario Report with the WinDS Model

    SciTech Connect (OSTI)

    Blair, N.; Hand, M.; Short, W.; Sullivan, P.

    2008-06-01

    In May 2008, DOE published '20% Wind Energy by 2030', a report which describes the costs and benefits of producing 20% of the nation's projected electricity demand in 2030 from wind technology. The total electricity system cost resulting from this scenario was modestly higher than a scenario in which no additional wind was installed after 2006. NREL's Wind Deployment System (WinDS) model was used to support this analysis. With its 358 regions, explicit treatment of transmission expansion, onshore siting considerations, shallow- and deep-water wind resources, 2030 outlook, explicit financing assumptions, endogenous learning, and stochastic treatment of wind resource variability, WinDS is unique in the level of detail it can bring to this analysis. For the 20% Wind Energy by 2030 analysis, the group chose various model structures (such as the ability to wheel power within an interconnect), and the wind industry agreed on a variety of model inputs (such as the cost of transmission or new wind turbines). For this paper, the analysis examined the sensitivity of the results to variations in those input values and model structure choices. These included wind cost and performance improvements over time, seasonal/diurnal wind resource variations, transmission access and costs, siting costs, conventional fuel cost trajectories, and conventional capital costs.

  12. Ag on Si(111) from basic science to application

    SciTech Connect (OSTI)

    Belianinov, Aleksey

    2012-04-04

    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.

  13. Template synthesis of Ag/AgCl microrods and their efficient visible light-driven photocatalytic performance

    SciTech Connect (OSTI)

    Chen, Hua; Xiao, Liang; Huang, Jianhua

    2014-09-15

    Highlights: Preparation ofAg/AgCl microrods by reaction of Ag{sub 2}WO{sub 4} microrods with NaCl solution. Generation of metallic Ag is induced by the ambient light in the synthesis process. Ag/AgCl shows excellent visible light-driven photodegradation of organic dyes. - Abstract: Ag/AgCl microrods, aggregated by nanoparticles with a diameter ranging from 100 nm to 2 ?m, were prepared by an ion-exchange reaction at 80 C between Ag{sub 2}WO{sub 4} template and NaCl solution. The existence of metallic Ag species was confirmed by XRD, DRS and XPS measurements. Ag/AgCl microrods showed excellent photocatalytic activity for the degradation of rhodamine B and methylene blue under visible light irradiation. The degradation rate constants of rhodamine B and methylene blue are 0.176 and 0.114 min{sup ?1}, respectively. The cycling photodegradation experiments suggest that Ag/AgCl microds could be employed as stable plasmonic photocatalysts for the degradation of organic dyes under visible light irradiation.

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

    SciTech Connect (OSTI)

    Schenke, Bjoern; Jeon, Sangyong; Gale, Charles

    2011-04-15

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

  15. Cu 2 S 3 complex on Cu(111) as a candidate for mass transport...

    Office of Scientific and Technical Information (OSTI)

    Cu 2 S 3 complex on Cu(111) as a candidate for mass transport enhancement Citation Details In-Document Search Title: Cu 2 S 3 complex on Cu(111) as a candidate for mass transport ...

  16. Melt-processing of Y-Ba-Cu-O superconductors for improved levitation

    SciTech Connect (OSTI)

    Balachandran, U.; Zhong, W.; Emerson, J.E.; McDaniel, R.L.

    1994-04-01

    Melt processed bulk YBa{sub 2}Cu{sub 3}O{sub 7{minus}{delta}} (YBCO) superconductors are of considerable interest in the application of low-friction, superconducting permanent magnet bearings and flywheel-energy-storage devices. The mechanisms of enhanced flux pinning in the melt processed samples has been the subject of many investigations. Fine precipitates of Y{sub 2}BaCuO{sub 5} (211) are considered potential flux-pinning sites by many investigators. Several groups have reported the refinement of 211 precipitates through Pt additions. In this paper, the authors describe the melt processing of YBCO with additives such as 211, Pt, and Ag. Large single domain regions are obtained using small SmBa2Cu3O{sub 7{minus}{delta}} (Sm-123) single crystal seeds. The microstructure and levitation forces are measured and reported here.

  17. cu | OpenEI Community

    Open Energy Info (EERE)

    ancient building system architect biomimicry building technology cooling cu daylight design problem energy use engineer fred andreas geothermal green building heat transfer...

  18. S R Biogas Energiesysteme AG | Open Energy Information

    Open Energy Info (EERE)

    Energiesysteme AG Jump to: navigation, search Name: S&R Biogas Energiesysteme AG Place: Frankfurt am Main, Hessen, Germany Zip: 60598 Product: S&R Biogas Energiesysteme is a biogas...

  19. E ON Energy from Waste AG | Open Energy Information

    Open Energy Info (EERE)

    from Waste AG Jump to: navigation, search Name: E.ON Energy from Waste AG Place: Helmstedt, Lower Saxony, Germany Zip: 38350 Product: Lower Saxony-based E.ON subsidiary is the...

  20. Organic pollutant photodecomposition by Ag/KNbO3 nanocomposites...

    Office of Scientific and Technical Information (OSTI)

    In this study, Ag nanoparticles supported on well-defined perovskite orthorhombic KNbO3 ... slab models of KNbO3 (101) are employed to mimic large supportedmore Ag nanoparticles. ...

  1. AgFe Management Ltd | Open Energy Information

    Open Energy Info (EERE)

    AgFe Management Ltd Jump to: navigation, search Name: AgFe Management Ltd Place: London, England, United Kingdom Zip: W11 1QF Product: London-based, Financial Asset Management and...

  2. SiC Processing AG | Open Energy Information

    Open Energy Info (EERE)

    SiC Processing AG Jump to: navigation, search Name: SiC Processing AG Place: Hirschau, Germany Zip: 92242 Sector: Solar Product: Offers management and recycling of slurry for solar...

  3. Ag@AgHPW as a plasmonic catalyst for visible-light photocatalytic degradation of environmentally harmful organic pollutants

    SciTech Connect (OSTI)

    Zhou, Wenhui; Cao, Minhua Li, Na; Su, Shuangyue; Zhao, Xinyu; Wang, Jiangqiang; Li, Xianghua; Hu, Changwen

    2013-06-01

    Graphical abstract: Ag@Ag{sub x}H{sub 3?x}PW12O40 (Ag@AgHPW) nanoparticles (NPs), a new visible-light driven plasmonic photocatalyst, are prepared by a green photoreduction strategy without the addition of any surfactant, which show a high activity and stability for the degradation of methyl blue (MB) under visible light irradiation. - Highlights: A new visible-light driven photocatalyst Ag@Ag{sub x}H{sub 3?x}PW{sub 12}O{sub 40} was designed. The photocatalyst shows a high activity for the degradation of methyl blue. The high activity can be ascribed to the synergy of photoexcited AgHPW and Ag. - Abstract: Ag@Ag{sub x}H{sub 3?x}PW{sub 12}O{sub 40} (Ag@AgHPW) nanoparticles (NPs), a new visible-light driven plasmonic photocatalyst, are prepared by a green photoreduction strategy without the addition of any surfactant. They show strong absorption in the visible region because of the localized surface plasmon resonance (LSPR) of Ag NPs. This plasmonic photocatalyst shows a high activity and stability for the degradation of methyl blue (MB) under visible light irradiation, which could be attributed to the highly synergy of photoexcited Ag{sub x}H{sub 3?x}PW{sub 12}O{sub 40} (AgHPW) and plasmon-excited Ag NPs and the confinement effects at interfaces between polyoxometalates (POMs) and silver. POM anions have redox ability and high photocatalytic activity, whereas Ag NPs could effectively accelerate the separation of electrons and holes, both of which contribute to their high activity.

  4. Characterization of Ag/Bi{sub 2}Sr{sub 2}Ca{sub n-1}O{sub 2n+4} interfacial resistivity.

    SciTech Connect (OSTI)

    Fang, Y.; Danyluk, S.; Lanagan, M. T.; Youngdahl, C. A.; Xu, X.; Numata, K.; Energy Technology; Georgia Inst. of Tech.; Mitsui Mining and Smelting Co. Ltd.

    1995-10-10

    Silver contacts to single-crystal Bi{sub 2}Sr{sub 2}CaCu{sub 2}O{sub x} (Bi-2212) and polycrystalline (Bi,Pb){sub 2}Sr{sub 2}Ca{sub 2}Cu{sub 3}O{sub x} (B-2223) were prepared by sputtering or sinter-forging techniques. The interfacial resistivity of Ag/Bi-2212, defined as interfacial resistance times contact area, decreased from 10{sup -4} to 10{sup -10} {Omega} cm{sup 2} at 77 K when the thermal annealing time increased from 1 to 14 h at 600 C; it was also a function of the annealing temperature. The lowest interfacial resistivity of Ag/Bi-2223 that was sinter-forged at 840-845 C for 1 h was 10{sup -9} {Omega} cm{sup 2} at 77 K. Experimental data are compared with intrinsic interfacial resistivity and resistivity values found in the literature.

  5. The BNL AGS accelerator complex status and future plans

    SciTech Connect (OSTI)

    Tanaka, Mitsuyoshi

    1997-05-01

    This paper describes the present performance and capability of the BNL AGS accelerator complex and possible future intensity upgrade plans. In 1995, the AGS reached its design upgrade goal of 6.0 x 10(exp 13) ppp with the Booster. The AGS with a new fast extracted beam (FEB) system is able to perform single bunch multiple extraction at 30 Hz per AGS cycle for the g-2 experiment and for RHIC injection.

  6. EA-261 UBS AG, London Branch | Department of Energy

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

    1 UBS AG, London Branch EA-261 UBS AG, London Branch Order authorizing UBS AG, London Branch to export electric energy to Mexico. EA-261 UBS AG, London Branch (24.57 KB) More Documents & Publications EA-184 Morgan Stanley Capital Group Inc. EA-166 Duke Energy Trading and Marketing, L.L.C EA-167 PG&E Energy Trading-Power, L.P

  7. Analysis, optimization, and implementation of a hybrid DS/FFH spread-spectrum technique for smart grid communications

    SciTech Connect (OSTI)

    Olama, Mohammed M.; Ma, Xiao; Killough, Stephen M.; Kuruganti, Teja; Smith, Stephen F.; Djouadi, Seddik M.

    2015-03-12

    In recent years, there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their inherent uses in military communications. This is because HSS can accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct sequence modulation with fast frequency hopping, denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper, error-probability analyses are performed for a hybrid DS/FFH system over standard Gaussian and fading-type channels, progressively including the effects from wide- and partial-band jamming, multi-user interference, and varying degrees of Rayleigh and Rician fading. In addition, an optimization approach is formulated that minimizes the bit-error performance of a hybrid DS/FFH communication system and solves for the resulting system design parameters. The optimization objective function is non-convex and can be solved by applying the Karush-Kuhn-Tucker conditions. We also present our efforts toward exploring the design, implementation, and evaluation of a hybrid DS/FFH radio transceiver using a single FPGA. Numerical and experimental results are presented under widely varying design parameters to demonstrate the adaptability of the waveform for varied harsh smart grid RF signal environments.

  8. Million Cu. Feet Percent of National Total

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

    0 New Hampshire - Natural Gas 2014 Million Cu. Feet Percent of National Total Million Cu. Feet Percent of National Total Total Net Movements: - Industrial: Dry Production: Vehicle ...

  9. Science DMZ Implemented at CU Boulder

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

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

  10. High intensity proton operation at the Brookhaven AGS accelerator complex

    SciTech Connect (OSTI)

    Ahrens, L.A.; Blaskiewicz, M.; Bleser, E.; Brennan, J.M.; Gardner, C.; Glenn, J.W.; Onillon, E.; Reece, R.K.; Roser, T.; Soukas, A.

    1994-08-01

    With the completion of the AGS rf upgrade, and the implementation of a transition {open_quotes}jump{close_quotes}, all of accelerator systems were in place in 1994 to allow acceleration of the proton intensity available from the AGS Booster injector to AGS extraction energy and delivery to the high energy users. Beam commissioning results with these new systems are presented. Progress in identifying and overcoming other obstacles to higher intensity are given. These include a careful exploration of the stopband strengths present on the AGS injection magnetic porch, and implementation of the AGS single bunch transverse dampers throughout the acceleration cycle.

  11. Enhanced thermal stability of Ag nanorods through capping

    SciTech Connect (OSTI)

    Bachenheimer, Lou; Elliott, Paul; Stagon, Stephen; Huang, Hanchen

    2014-11-24

    Ag nanorods may serve as sensors in the detection of trace amounts of chemical agents, even single molecules, through surface enhanced Raman spectroscopy (SERS). However, thermal coarsening of Ag nanorods near room temperature limits their applications. This letter proposes the use of a thin oxide capping layer to enhance the thermal stability of Ag nanorods beyond 100?C. Using electron microscopy characterization and SERS tests, the authors show that the proposed method is effective in stabilizing both morphology and sensitivity of Ag nanorods. The results of this work extend the applicability of Ag nanorods as chemical sensors to higher temperatures.

  12. Materials Data on Cu2Ag2O3 (SG:141) by Materials Project

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Kristin Persson

    2015-02-09

    Computed materials data using density functional theory calculations. These calculations determine the electronic structure of bulk materials by solving approximations to the Schrodinger equation. For more information, see https://materialsproject.org/docs/calculations

  13. Structural and magnetic phase transitions in CeCu6-xTx (T = Ag...

    Office of Scientific and Technical Information (OSTI)

    ... Type: Accepted Manuscript Journal Name: Physical Review. B, Condensed Matter and Materials ... Export Metadata Endnote Excel CSV XML Save to My Library Send to Email Send to Email ...

  14. Inkjet Printed Metallizations for Cu(In1-xGax)Se2 Photovoltaic Cells

    SciTech Connect (OSTI)

    Hersh, P. A.; Curtis, C. J.; van Hest, M. F. A. M.; Kreuder, J. J.; Pasquarelli, R.; Miednaer, A.; Ginley, D. S.

    2011-12-01

    This study reports the inkjet printing of Ag front contacts on Aluminum doped Zinc Oxide (AZO)/intrinsic Zinc Oxide (i-ZnO)/CdS/Cu(In{sub 1-x}Ga{sub x})Se{sub 2} (CIGS)/Mo thin film photovoltaic cells. The printed Ag contacts are being developed to replace the currently employed evaporated Ni/Al bi-layer contacts. Inkjet deposition conditions were optimized to reduce line resistivity and reduce contact resistance to the Al:ZnO layer. Ag lines printed at a substrate temperature of 200 C showed a line resistivity of 2.06 {mu}{Omega} {center_dot} cm and a contact resistance to Al:ZnO of 8.2 {+-} 0.2 m{Omega} {center_dot} cm{sup 2} compared to 6.93 {+-} 0.3 m{Omega} {center_dot} cm{sup 2} for thermally evaporated contacts. These deposition conditions were used to deposit front contacts onto high quality CIGS thin film photovoltaic cells. The heating required to print the Ag contacts caused the performance to degrade compared to similar devices with evaporated Ni/Al contacts that were not heated. Devices with inkjet printed contacts showed 11.4% conversion efficiency compared to 14.8% with evaporated contacts. Strategies to minimize heating, which is detrimental for efficiency, during inkjet printing are proposed.

  15. Atomic oxygen flux determined by mixed-phase Ag/Ag2O deposition

    SciTech Connect (OSTI)

    Kaspar, Tiffany C.; Droubay, Timothy C.; Chambers, Scott A.

    2010-11-01

    The flux of atomic oxygen generated in a electron cyclotron resonance (ECR) microwave plasma source was quantified by two different methods. The commonly applied approach of monitoring the frequency change of a silver-coated quartz crystal microbalance (QCM) deposition rate monitor as the silver is oxidized was found to underestimate the atomic oxygen flux by an order of magnitude compared to a more direct deposition approach. In the mixed-phase Ag/Ag2O deposition method, silver films were deposited in the presence of the plasma such that the films were partially oxidized to Ag2O; x-ray photoelectron spectroscopy (XPS) was utilized for quantification of the oxidized fraction. The inaccuracy of the QCM oxidation method was tentatively attributed to efficient catalytic recombination of O atoms on the silver surface.

  16. Analysis, optimization, and implementation of a hybrid DS/FFH spread-spectrum technique for smart grid communications

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

    Olama, Mohammed M.; Ma, Xiao; Killough, Stephen M.; Kuruganti, Teja; Smith, Stephen F.; Djouadi, Seddik M.

    2015-03-12

    In recent years, there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their inherent uses in military communications. This is because HSS can accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct sequence modulation with fast frequency hopping, denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. Inmore » this paper, error-probability analyses are performed for a hybrid DS/FFH system over standard Gaussian and fading-type channels, progressively including the effects from wide- and partial-band jamming, multi-user interference, and varying degrees of Rayleigh and Rician fading. In addition, an optimization approach is formulated that minimizes the bit-error performance of a hybrid DS/FFH communication system and solves for the resulting system design parameters. The optimization objective function is non-convex and can be solved by applying the Karush-Kuhn-Tucker conditions. We also present our efforts toward exploring the design, implementation, and evaluation of a hybrid DS/FFH radio transceiver using a single FPGA. Numerical and experimental results are presented under widely varying design parameters to demonstrate the adaptability of the waveform for varied harsh smart grid RF signal environments.« less

  17. Movable Genetic Elements: Detection of Changes in Maize DNA at the Shrunken Locus Due to the Intervention of Ds Elements

    DOE R&D Accomplishments [OSTI]

    Burr, B.; Burr, F.A.

    1980-05-28

    This report describes our initial attempts at the molecular characterization of a maize controlling element. We have prepared a cDNA probe and used it to detect changes at a locus where Ds elements are found. Evidence of their presence are indicated by changes in the restriction patterns, but there is as yet no information on the physical nature of the controlling elements nor on the kinds of rearrangements they cause.

  18. Analysis, Optimization, and Implementation of a Hybrid DS/FFH Spread-Spectrum Technique for Smart Grid Communications

    SciTech Connect (OSTI)

    Olama, Mohammed M; Ma, Xiao; Killough, Stephen M; Kuruganti, Teja; Smith, Stephen Fulton; Djouadi, Seddik M

    2015-01-01

    In recent years, there has been great interest in using hybrid spread-spectrum (HSS) techniques for commercial applications, particularly in the Smart Grid, in addition to their inherent uses in military communications. This is because HSS can accommodate high data rates with high link integrity, even in the presence of significant multipath effects and interfering signals. A highly useful form of this transmission technique for many types of command, control, and sensing applications is the specific code-related combination of standard direct sequence modulation with fast frequency hopping, denoted hybrid DS/FFH, wherein multiple frequency hops occur within a single data-bit time. In this paper, error-probability analyses are performed for a hybrid DS/FFH system over standard Gaussian and fading-type channels, progressively including the effects from wide- and partial-band jamming, multi-user interference, and varying degrees of Rayleigh and Rician fading. In addition, an optimization approach is formulated that minimizes the bit-error performance of a hybrid DS/FFH communication system and solves for the resulting system design parameters. The optimization objective function is non-convex and can be solved by applying the Karush-Kuhn-Tucker conditions. We also present our efforts toward exploring the design, implementation, and evaluation of a hybrid DS/FFH radio transceiver using a single field-programmable gate array (FPGA). Numerical and experimental results are presented under widely varying design parameters to demonstrate the adaptability of the waveform for varied harsh smart grid RF signal environments.

  19. Thermal-mechanical Properties of Epoxy-impregnated Bi-2212/Ag Composite

    SciTech Connect (OSTI)

    Li, Pei [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Wang, Yang [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Godeke, Arno [Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States); Ye, Liyang [North Carolina State Univ., Raleigh, NC (United States); Flanagan, Gene [Muons Inc., Batavia, IL (United States); Shen, Tengming [Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)

    2014-11-26

    Knowledge of the thermal-mechanical properties of epoxy/superconductor/insulation composite is important for designing, fabricating, and operating epoxy impregnated high field superconducting magnets near their ultimate potentials. We report measurements of the modulus of elasticity, Poissons ratio, and the coefficient of thermal contraction of epoxy-impregnated composite made from the state-of-the-art powder-in-tube multifilamentary Ag/Bi2Sr2CaCu2Ox round wire at room temperature and cryogenic temperatures. Stress-strain curves of samples made from single-strand and Rutherford cables were tested under both monotonic and cyclic compressive loads, with single strands insulated using a thin TiO2 insulation coating and the Rutherford cable insulated with a braided ceramic sleeve.

  20. Thermal-mechanical properties of epoxy-impregnated Bi-2212/Ag composite

    SciTech Connect (OSTI)

    Li, Pei; Wang, Yang; Godeke, Arno; Ye, Liyang; Flanagan, Gene; Shen, Tengming

    2014-11-26

    In this study, knowledge of the thermal-mechanical properties of epoxy/superconductor/insulation composite is important for designing, fabricating, and operating epoxy impregnated high field superconducting magnets near their ultimate potentials. We report measurements of the modulus of elasticity, Poisson's ratio, and the coefficient of thermal contraction of epoxy-impregnated composite made from the state-of-the-art powder-in-tube multifilamentary Ag/Bi2Sr2CaCu2Ox round wire at room temperature and cryogenic temperatures. Stress-strain curves of samples made from single-strand and Rutherford cables were tested under both monotonic and cyclic compressive loads, with single strands insulated using a thin TiO2 insulation coating and the Rutherford cable insulated with a braided ceramic sleeve.

  1. Thermal-mechanical properties of epoxy-impregnated Bi-2212/Ag composite

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

    Li, Pei; Wang, Yang; Fermi National Accelerator Lab.; Godeke, Arno; National High Magnetic Field Lab., Tallahassee, FL; Ye, Liyang; Fermi National Accelerator Lab.; Flanagan, Gene; Shen, Tengming

    2014-11-26

    In this study, knowledge of the thermal-mechanical properties of epoxy/superconductor/insulation composite is important for designing, fabricating, and operating epoxy impregnated high field superconducting magnets near their ultimate potentials. We report measurements of the modulus of elasticity, Poisson's ratio, and the coefficient of thermal contraction of epoxy-impregnated composite made from the state-of-the-art powder-in-tube multifilamentary Ag/Bi2Sr2CaCu2Ox round wire at room temperature and cryogenic temperatures. Stress-strain curves of samples made from single-strand and Rutherford cables were tested under both monotonic and cyclic compressive loads, with single strands insulated using a thin TiO2 insulation coating and the Rutherford cable insulated with a braided ceramicmore » sleeve.« less

  2. Double dumbbell shaped AgNi alloy by pulsed electrodeposition

    SciTech Connect (OSTI)

    Dhanapal, K.; Vasumathi, M.; Santhi, Kalavathy; Narayanan, V. Stephen, A.

    2014-01-28

    Silver-Nickel is the well-known thermally immiscible system that makes them quite complex for the formation of alloy. This kind of alloy can be attained from electrodeposition method. In the present work, AgNi alloy was synthesized by pulsed electrodeposition in a single bath two electrode system with the use of anodic alumina membrane. The prepared AgNi alloy and pure Ag were characterized with X-ray Diffraction (XRD) for structural confirmation, Scanning Electron Microscopy (SEM) for morphological, and magnetic properties by Vibrating Sample Magnetometer, respectively. The X-ray Diffraction study shows the formation of cubic structure for pure Ag. SEM analysis reveals the double dumbbell morphology for AgNi alloy and spherically agglomeration for pure silver. Hysteresis behaviour from VSM measurement indicates that the AgNi alloy have good ferro-magnetic properties.

  3. Thermodynamic estimation of minor element distribution between immiscible liquids in Fe-Cu-based metal phase generated in melting treatment of municipal solid wastes

    SciTech Connect (OSTI)

    Lu, X.; Nakajima, K.; Sakanakura, H.; Matsubae, K.; Bai, H.; Nagasaka, T.

    2012-06-15

    Graphical abstract: Display Omitted Highlights: Black-Right-Pointing-Pointer Two liquids separation of metal occurs in the melting of municipal solid waste. Black-Right-Pointing-Pointer The distribution of PGMs etc. between two liquid metal phases is studied. Black-Right-Pointing-Pointer Quite simple thermodynamic model is applied to predict the distribution ratio. Black-Right-Pointing-Pointer Au and Ag originated from WEEE are found to be concentrated into Cu-rich phase. - Abstract: Waste electrical and electronic equipment (WEEE) has become an important target in managing material cycles from the viewpoint of not only waste management and control of environmental pollution but also resource conservation. This study investigated the distribution tendency of trace elements in municipal solid waste (MSW) or incinerator ash, including valuable non-ferrous metals (Ni, Co, Cr, Mn, Mo, Ti, V, W, Zr), precious group metals (PGMs) originated from WEEE (Ag, Au, Pd, Pt), and others (Al, B, Pb, Si), between Fe-rich and Cu-rich metal phases by means of simple thermodynamic calculations. Most of the typical alloying elements for steel (Co, Cr, Mo, Nb, Ni, Si, Ti, V, and W) and Rh were preferentially distributed into the Fe-rich phase. PGMs, such as Au, Ag, and Pd, were enriched in the Cu-rich phase, whereas Pt was almost equally distributed into both phases. Since the primary metallurgical processing of Cu is followed by an electrolysis for refining, and since PGMs in crude copper have been industrially recovered from the resulting anode slime, our results indicated that Ag, Au, and Pd could be effectively recovered from MSW if the Cu-rich phase could be selectively collected.

  4. Solaxis GmbH Regetec Handels AG | Open Energy Information

    Open Energy Info (EERE)

    Zip: 47475 Sector: Solar Product: Distributor and installer of photovoltaic modules and solar heating systems. References: Solaxis GmbH (Regetec Handels AG)1 This article is a...

  5. Schnell Z ndstrahlmotoren AG Co KG | Open Energy Information

    Open Energy Info (EERE)

    Zndstrahlmotoren is specialized on the production of dual fuel engines (CHPs) for biogas, dump and sewage gas. References: Schnell Zndstrahlmotoren AG & Co. KG1 This...

  6. EnviTec Biogas AG | Open Energy Information

    Open Energy Info (EERE)

    EnviTec Biogas AG Place: Saerbeck, North Rhine-Westphalia, Germany Zip: 48369 Product: Plans, finances, installs and commissions biogas systems including technical and biological...

  7. EPURON GmbH formerly Voltwerk AG | Open Energy Information

    Open Energy Info (EERE)

    EPURON GmbH (formerly Voltwerk AG) Place: Hamburg, Germany Zip: 20537 Sector: Solar, Wind energy Product: Develops, finances, implements and operates solar, wind and biogas...

  8. Monitoring Galvanic Replacement of Ag Nanoparticles by Pd using...

    Office of Scientific and Technical Information (OSTI)

    Conference: Monitoring Galvanic Replacement of Ag Nanoparticles by Pd using Low Dose In Situ Liquid STEM. Citation Details In-Document Search Title: Monitoring Galvanic ...

  9. High intensity performance and upgrades at the Brookhaven AGS...

    Office of Scientific and Technical Information (OSTI)

    Country of Publication: United States Language: English Subject: 43 PARTICLE ACCELERATORS; BEAM EMITTANCE; BEAM OPTICS; BROOKHAVEN AGS; GEV RANGE; LINEAR ACCELERATORS; MEV RANGE; ...

  10. METAL MEDIA FILTERS, AG-1 SECTION FI

    SciTech Connect (OSTI)

    Adamson, D.

    2012-05-23

    One application of metal media filters is in various nuclear air cleaning processes including applications for protecting workers, the public and the environment from hazardous and radioactive particles. To support this application the development of the ASME AG-1 FI Standard on Metal Media has been under way for more than ten years. Development of the proposed section has required resolving several difficult issues associated with operating conditions (media velocity, pressure drop, etc.), qualification testing, and quality acceptance testing. Performance characteristics of metal media are dramatically different than the glass fiber media with respect to parameters like differential pressures, operating temperatures, media strength, etc. These differences make existing data for a glass fiber media inadequate for qualifying a metal media filter for AG-1. In the past much work has been conducted on metal media filters at facilities such as Lawrence Livermore National Laboratory (LLNL) and Savannah River National Laboratory (SRNL) to qualify the media as High Efficiency Particulate Air (HEPA) Filters. Particle retention testing has been conducted at Oak Ridge Filter Test Facility and at Air Techniques International (ATI) to prove that the metal media meets or exceeds the 99.97% particle retention required for a HEPA Filter. Even with his testing, data was lacking to complete an AG-1 FI Standard on metal media. With funding secured by Mississippi State University (MSU) from National Nuclear Security Administration (NNSA), a research test stand is being designed and fabricated at MSU's Institute for Clean Energy Technology (ICET) Facility to obtain qualification data on metal media. This in turn will support required data needed for the FI Standard. The paper will discuss in detail how the test stand at MSU will obtain the necessary data to complete the FI Standard.