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Physicists cool semiconductor by laser light

Researchers at the Niels Bohr Institute have combined two worlds – quantum physics and nano physics, and this has led to the discovery of a new method for laser cooling semiconductor membranes. Semiconductors are vital components in solar cells, LEDs and many other electronics, and the efficient cooling of components is important for future quantum computers and ultrasensitive sensors. The new cooling method works quite paradoxically by heating the material

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An American Cycling in Paris: My Ode to Bike Sharing

Bike-share stands: a common sight around Paris. Credit: John Matson/Scientific American I recently spent three days in Paris on the way home from a conference , becoming just the latest in a long history of visitors to fall in love with the City of Light. It wasn’t the sights, the cafes, or the croissants that got me--although all those things helped.

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The Most Energy Efficient States In The Nation

A new report details which state governments are doing the most to be energy efficient. Hey, Alabama's not such a fuel-guzzling planet-killer anymore! Energy efficiency--it's all the rage these days. From CFL light bulbs to Energy Star fridges, it's easy to try to reduce your personal energy consumption

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Car of the Year 2011: No. 3 Porsche 911 Turbo S

Fast and EfficientClose your eyes while sitting in the passenger seat of the Porsche 911 Turbo S, and when the driver floors it, you will swear you are in the cockpit of a Bugatti Veyron. (Those with weaker stomachs should avoid this experiment.) Equipped with a tuned version of Porsche’s ...

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