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...]
Solar-Powered Lasers Use Heat Sink for Cooling
A researcher in Uzbekistan has proposed a plan for solar-powered lasers using small parabolic mirrors about 3 feet in diameter, combined with new two-layer ceramic disks to produce laser light. When sunlight hits the ceramic material, it excites the electrons and causes them to emit laser light of a specific wavelength. To control the heat, the ceramic disk would be mounted … [Read more...]
