Researchers use lasers to semiconductor membranes supercool, blow your mind
Ah, the lasers. This wonderful, ultra-light beams intense, we have seen used in death ray . As, researchers at the Niels Bohr Institute, University of Copenhagen figure, we can not do anything to ‘em > laser , and found a way to use them to cool a semiconductor material little thought. This little black magic works with a membrane made of gallium arsenide and is based on the principles of quantum physics and the opto-mechanical (the interaction between light and mechanical agitation) is based.
It turned out, in a membrane is a square millimeter of gallium arsenide in parallel a mirror placed in an empty room and bombarded with a laser beam is an optical cavity between them that creates the membrane vibrates. As the distance between gallium arsenide and travel mirror, so do the vibrations of the membrane. And a certain frequency, the membrane is cooled to minus 269 degrees Celsius – despite the fact that the membrane itself is heated by the laser. Thus, both heat and laser and things to cool in At the same time, and if that confuses you as much as we do, feel free to dive into the science behind this research under the somewhat paradoxical source. In other news, from left to right, up is down, and Eli Manning is a popular folk hero all Bostonians
, Tues, January 24th, 2012 12:22:00 EDT. Please read our Terms href = “http://www.engadget.com/2011/04/10/us-navys-solid-state-laser-sets-boat-ablaze-video/”>
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