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Researchers Create Laser-Based Cooling

Scientists from Nanyang Technological University developed a method for laser cooling of semiconductors. They investigated using a pump laser and its effect on cadmium sulfide nanoribbon. The researchers cooled the semiconductor from 62 degrees Fahrenheit to -9 degrees by focusing a green laser on it and making it fluoresce. It lost energy as light. The technology might eventually be used in infrared cameras on satellites and night vision goggles. They are investigating whether the laser-cooling method can reach much lower temperatures on a par with liquid helium. The researchers published their work in the journal Nature. (SlashDot)(Txchnologist)(Nature)

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