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Displaying 20276 - 20300 of 73751

Mapping the Local Photo-Electronic Properties of Polycrystalline Solar Cells through High Resolution Laser-Beam-Induced Current Microscopy

January 1, 2014
Author(s)
Marina S. Leite, Maxim Abashin, Henri J. Lezec, Anthony G. Gianfrancesco, Albert A. Talin, Nikolai B. Zhitenev
To boost the efficiency of thin film polycrystalline solar cells that are microscopically inhomogeneous, it is imperative to understand how the grain cores (GCs) and grain boundaries (GBs) within these materials affect its overall electronic properties. By

Materials Genome III: Building CALPHAD File and Data Repositories

January 1, 2014
Author(s)
Carelyn E. Campbell, Ursula R. Kattner, Zi-Kui Liu
The future development of the CALPHAD method requires establishing file and data repositories and tools to automate the modeling process and to enable efficient implementation of new models and development of multicomponent descriptions. To advance these

Measurement Traceability in Medical Physics

January 1, 2014
Author(s)
Lisa R. Karam
Medical physics, the joining of physics with healthcare, requires a level of quality assurance beyond many applications of the physical sciences. Always the health, and often the life, of the patient depends on the precise and accurate implementation of

Non-imaging Winston Cone Concentrators for Submillimeter-wave, Overmoded Waveguide

January 1, 2014
Author(s)
Erich N. Grossman, Oscar D. Friedman, Andrew O. Nelson
We describe the design, simulation, and measured performance of concentrators designed to couple submillimeter wavelength radiation from free space into highly overmoded, rectangular, WR-10 waveguide. They consist of a combination of a Winston cone, (also

R Implementation of a Polyhedral Approximation to a 3D Set of Points Using the Alpha-Shape

January 1, 2014
Author(s)
Thomas V. Lafarge, Beatriz Pateiro Lopez, Antonio M. Possolo, Joy P. Dunkers
This work describes the implementation in R of the alpha-shape of a finite set of points in three-dimensional space. This geometric construct generalizes the convex hull and estimates the shape of non-convex and even non-connected sets in 3D, given random

Reducing the Risk of Fire in Buildings and Communities

January 1, 2014
Author(s)
Anthony Hamins, Jason D. Averill, Nelson P. Bryner, David Butry, Richard Gann, Rick D. Davis, Daniel M. Madrzykowski, Alexander Maranghides, Jiann C. Yang, Matthew Bundy, Samuel Manzello, Jeffrey W. Gilman, Francine K. Amon, William E. Mell
Fire costs and losses are a significant life safety and economic burden on society comprising about two percent of the United States gross domestic product. This paper presents the results of a roadmap developed by the National Institute of Standards and

The Mott Transition in a Bose Gas Measured Through Time of Flight

January 1, 2014
Author(s)
Ian B. Spielman, Karina Jimenez-Garcia
Ultracold atoms in optical lattices can realize nearly perfect analogs to condensed matter model systems without the complexity present in materials. In this chapter, we thoroughly describe our experimental characterization of the transition from
Displaying 20276 - 20300 of 73751
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