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FlickrSemiconductor nanowire lasers have attracted intense interest as promising compact, low-power coherent light sources for on-chip applications, many of which (e.g., imaging, multiplex communication, data storage) desire high beam quality and spectral purity—conditions that can be satisfied by single-mode operation in nanowire lasers. However, due to the lack of mode-selection mechanisms, most reported nanowire lasers exhibit [...]
In response to increased interest in wide-bandgap (WBG) semiconductor projects by DOE, on October 30, 2012, Sandia hosted a one-day brainstorming workshop aimed at identifying the value, scope, structure, and partnership opportunities of a potential National Center for Wide Bandgap Semiconductors. Participants from DOE, industry, academia, and other labs participated in a series of breakout [...]
June 22, 2011 In a paper titled “Nanoscale Effects on Heterojunction Electron Gases in GaN/AlGaN Core/Shell Nanowires” published in Nano Letters, Sandia scientist Bryan M. Wong, and EFRC scientists François Léonard, Qiming Li, and George T. Wang, present a theoretical and computational study of the electronic properties of core/shell nanowires. They find that the nanometer size [...]
June 27-28, 2011 The rebound (or take-back) effect) is the term in energy economics used to describe the effectin which increases in energy efficiency do not necessarily lead to simple 1:1 decreases in energy consumption, but instead are “taken back” in the form of higher consumption of the goods and services that the energy is [...]
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