Energy, Climate, & Infrastructure Security (ECIS)

Office of Science

Alaskan North Slope Climate: Hard Data from a Hard Place

Mark Ivey—manager for Sandia of the Department of Energy’s Atmospheric Radiation Measurement (ARM) climate research facility at Barrow—is waiting for the automated release of a weather balloon … [which] measures the Arctic atmosphere’s temperature, humidity, and wind speeds at a rapid succession of altitudes as it rises. The data gathering is part of an ongoing [...]

News / Highlights

On February 15, 2012, in

2013 SSLS Scientist Jeff Tsao Wins the Asian American Engineer of the Year Award! March 2, 2013 Congratulations to our very own Jeff Tsao, who was awarded the 2013 Asian American Engineer of the Year Award! Jeff is the 13th Sandian to be honored with this prestigious award. In recognition of this exceptional accomplishment, Jeff [...]

Nanoscale Effects on Heterojunction Electron Gases in GaN/AlGaN Core/Shell Nanowires

On August 15, 2011, in News, Solid-State Lighting

June 22, 2011 [singlepic id=978 w=320 h=240 float=right] 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 [...]

Jeff Tsao participates in “Energy Efficiency and the Rebound Effect” Workshop

On August 15, 2011, in News, Solid-State Lighting

June 27-28, 2011 [singlepic id=979 w=320 h=240 float=right] 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 [...]

Four-color laser white illuminant demonstrating high color-rendering quality

On August 15, 2011, in News, Solid-State Lighting

July 4, 2011 [singlepic id=980 w=320 h=240 float=right]Solid-state lighting is currently based on light-emitting diodes (LEDs) and phosphors.  Solid-state lighting based on lasers would offer significant advantages including high potential efficiencies at high current densities. Light emitted from lasers, however, has a much narrower spectral linewidth than light emitted from LEDs or phosphors.  Therefore it [...]

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