Spray cooling processes yield high heat transfer coefficients due to heat absorption associated with latent heat absorption during liquid-vapor phase transition [1-5]. Spray cooling advantages lie in potentially eliminating TIM1 and TIM 2 thermal resistances, yielding significant reduction in overall thermal resistance. Due to the complexity and chaotic nature of millions of … [Read more...]
U.S. Navy Incorporates New Test Equipment Products
National Instruments announced that Lockheed Martin will integrate NI PXI modular instrumentation and platform products into the U.S. Navy’s electronic Consolidated Automated Support System (eCASS) automated test equipment family. The eCASS test stations replace the existing CASS program as the U.S. Navy’s core test system for on-ship and onshore electronic subassembly … [Read more...]
Stanford Physicists Create Ultracold Quantum Fermionic Gas
A Stanford team announced that it has created the world's first dipolar quantum fermionic gas from the metal dysprosium. The team heated particles in a crucible to around 1,300 degrees Celsius and shot them into a powerful vacuum. Using a continuous-wave blue laser, the particles were then cooled to within a thousandth of a degree of absolute zero. Subsequent lasers and an … [Read more...]
Researchers Improve Infrared Detectors
A team of researchers from Peking University, the Chinese Academy of Sciences, and Duke University is harnessing the remarkable properties of single-walled carbon nanotubes (SWNTs) to create highly sensitive, “uncooled” photovoltaic infrared detectors. This new type of detector may prove useful for industrial, military, manufacturing, optical communications, and scientific … [Read more...]
Small Bumps in “Semiconductor Billiards” Have Unexpectedly Large Effect
There’s nothing worse than a pool table with an unseen groove or bump that sends your shot off course: a new study has found that the same goes at the nano-scale, where the “billiard balls” are tiny electrons moving across a “table” made of the semiconductor gallium arsenide. In a research paper titled “The Impact of Small-Angle Scattering on Ballistic Transport in Quantum … [Read more...]
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