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Displaying records 441 to 450 of 542 records.
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441. Stress Response to Surface Alloying and De-Alloying During Under Potential Deposition of Pb on (111)-Textured Au
Topic: Materials Science
Published: 4/5/2010
Authors: Jae W. Shin, Ugo Bertocci, Gery R Stafford
Abstract: The stress during Pb underpotential deposition (upd) on (111)-textured Au has been examined on a cantilever beam electrode in perchloric acid supporting electrolyte. The upd peaks change from double to single going from higher to lower sweep rates, ...

442. Stresses in shape memory polymer-matrix nanocomposites for biomedical applications
Topic: Materials Science
Published: 6/1/2004
Authors: Davor Balzar, G Stefanic, Kenneth Gall, Martin Dunn, Yiping Liu
Abstract: We report on the residual stresses in amorphous shape memory polymers reinforced with SiC particles. After 50 % compression of the composite material at 25 ¿C, the SiC particles exhibit a compressive stress, which is almost completely released during ...

443. Strong Casimir force reduction by metallic surface nanostructuring
Topic: Materials Science
Published: 9/27/2013
Authors: Francesco Intravaia, Stefan T. Koev, Il Woong Jung, Albert A. Talin, Paul S Davids, Ricardo Decca, Vladimir A Aksyuk, Diego A. R. Dalvit, Daniel Lopez
Abstract: The Casimir force is a quantum-mechanical interaction arising from vacuum fluctuations of the electromagnetic (EM) field and is technologically significant in micro- and nanomechanical systems. Despite rapid progress in nanophotonics, the goal of e ...

444. Structural Changes behind the Diffuse Dielectric Response in AgNbO3
Topic: Materials Science
Published: 3/13/2009
Authors: Igor Levin, Victor Lvovich Krayzman, Joseph C Woicik, J. Karapetrova, T. Proffen, M. G. Tucker, I. M. Reaney
Abstract: Structural changes among the so-called M-polymorphs of AgNbO3 were analyzed using combined high-resolution X-ray diffraction, neutron total scattering, electron diffraction, and X-ray absorption fine structure measurements. These polymorphs crystall ...

445. Structural Study of Ba^d11^Fe^d8^Ti^d9^O^d41^ by X-Ray Diffraction
Topic: Materials Science
Published: 9/1/2000
Authors: T Siegrist, C Svensson, Terrell A Vanderah, Robert S. Roth
Abstract: The crystal structure of Ba^d11^Fe^d8^Ti^d9^O^d41^ was determined using single-crystal and powder X-ray diffraction nethods. This new phase crystallizes in the hexagonal space group P6^d3^/mmc (No 194) (a=5.7506(3) , c=61.413(2) ; Z=2; Pcalc=5.75 g/ ...

446. Structural changes during the formation of gold single atom chains: stability criteria and electronic structure
Topic: Materials Science
Published: 6/17/2010
Authors: Francesca M Tavazza, Lyle E Levine, Anne Marie Chaka
Abstract: Under tensile deformation, Au nanowires (NWs) elongate to form single atom chains via a series of intermediate structural transformations. These intermediate structures are investigated using semistatic density functional theory (DFT), with particu ...

447. Structural investigation of (Sr^d4-{delta}^Ca^d{delta}^)PtO^d6^ Using X-Ray Rietveld Refinement
Topic: Materials Science
Published: 8/16/1999
Authors: Winnie K Wong-Ng, James A Kaduk, R A Young, F Jiang
Abstract: The structures of the solid solution series (Sr^d4-{delta}^Ca^d{delta}^)PtO^d6^, with {delta} = 0, 0.85(1), 2, and 3, have been investigated using the Rietveld refinement technique with laboratory x-ray powder data. A complete solid solution between ...

448. Structure and Dynamics Studies of Concentrated Micrometer-Sized Colloidal Suspensions
Topic: Materials Science
Published: 1/7/2013
Authors: Fan Zhang, Andrew John Allen, Lyle E Levine, Jan Ilavsky, Gabrielle Gibbs Long
Abstract: We present an experimental study of the structural and dynamical properties of concentrated suspensions of a series of different sized polystyrene microspheres dispersed in glycerol for volume fraction concentrations between 10 % and 20 %. The static ...

449. Structure and Microwave Dielectric Properties in the x Ca^d2^AlNbO^d6^: (1-x) Ca^d3^Nb^d2^O^d8^ System
Topic: Materials Science
Published: 2/1/2000
Authors: Julia Y. Chan, Terrell A Vanderah, Robert S. Roth, Winnie K Wong-Ng, B A Reisner, Richard G. Geyer
Abstract: The structure and dielectric properties of bulk ceramics in the xCa2AlNbO6: (1-x)Ca3Nb2O8 system were studied. Ca2AlNbO6 (P21/n, a = 5.3785(1) , b = 5.4158(1) , c = 7.6259(1) , b = 89.93(1)o) is a double perovskite with structure similar to CaTiO3 ...

450. Structure and Properties of Small Molecule-Polymer Blend Semiconductors for Organic Thin Film Transistors
Topic: Materials Science
Published: 6/4/2008
Authors: Vivek M Prabhu, Jihoon Kang, Nayool Shin, Do Y. Yoon, Do Young Jang
Abstract: A comprehensive structural and electrical characterization of solution-processed blend films of 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS-pentacene) and poly(alpha-methylstyrene) (PaMS) was performed to understand and optimize the blend semic ...

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