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Displaying 28326 - 28350 of 143784

A precise instrument to determine the Planck constant, and the future kilogram

June 21, 2016
Author(s)
Darine El Haddad, Frank C. Seifert, Leon S. Chao, David B. Newell, Jon R. Pratt, Carl J. Williams, Stephan Schlamminger, Shisong Li
A precise instrument, called a watt balance, compares mechanical power measured in terms of the meter, the second and the kilogram to electrical power measured in terms of the volt and the ohm. A direct link between mechanical action and the Planck

Building Systems: Characterization and Impacts OVERVIEW

June 21, 2016
Author(s)
Andrew K. Persily
Characterize three building systems Building envelope, HVAC (heating, ventilating and air-conditioning) and interior surfaces Factors likely to impact the indoor microbiome Known links between systems and indoor microbiome

Near-theoretical fracture strengths in native and oxidized silicon nanowires

June 21, 2016
Author(s)
Frank W. DelRio, Ryan M. White, Sergiy Krylyuk, Albert Davydov, Lawrence H. Friedman, Robert F. Cook
In this letter, fracture strengths σf of native and oxidized silicon nanowires (SiNWs) were determined via atomic force microscopy bending experiments and nonlinear finite element analysis. In the native SiNWs, σf in the Si was comparable to the

Atomic structural evolution during the reduction of a-Fe2O3 nanowires

June 20, 2016
Author(s)
Wenhui Zhu, Jonathan P. Winterstein, Itai Maimon, Qiyue Yin, Lu Yuan, Aleksey N. Kolmogorov, Renu Sharma, Guangwen Zhou
The atomic-scale reduction mechanism of α-Fe2O3 nanowires by H2 was followed using transmission electron microscopy to reveal the evolution of atomic structures and the associated transformation pathways for different iron oxides. The reduction commences

Evolution of Dendrimer Conformational Structure with Generation Number

June 20, 2016
Author(s)
Beatriz A. Pazmino, Jack F. Douglas
We simulate the conformational structure of a coarse-grained model of dendrimer molecules in good solvent as a function of generation number G and find that they evolve through a substantially more complex structures than regular star polymer with

Kondo Effect in Magnetic Tunnel Junctions with an AIOx Tunnel Barrier

June 17, 2016
Author(s)
Chao Zheng, Robert D. Shull, Andrew P. Chen, Philip Pong
The Kondo effect in magnetic tunnel junctions (MTJs) is a result of the spin-exchange interaction between magnetic impurities and the conduction electrons. The presence of the Kondo effect can strongly influence the spin-dependent transport behavior of
Displaying 28326 - 28350 of 143784
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