Tiny rods and paddle make new thermal sensor

a class="thickbox" href="http://images.iop.org/objects/phw/news/17/4/4/PW-2013-04-03-Dume-paddle.jpg" style="margin-left: auto; margin-right: auto;" title="(Top) The torsional-frequency-shift-based infrared detector. (Bottom) The optical-interference set-up used to detect the resonant-frequency shift of the device upon IR radiation. (Courtesy: Nano Lett.)"> a class="thickbox" href="http://images.iop.org/objects/phw/news/17/4/4/PW-2013-04-03-Dume-paddle.jpg" title="(Top) The torsional-frequency-shift-based...

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Why water prefers the single life!?

Double life of water? The idea that liquid water can exist in two different forms has been controversial since it was first raised more than 20 years ago. But now the existence of the "liquid–liquid phase transition" in water has been emphatically challenged by two researchers at the University of California at Berkeley, who say that their extensive search for it in computer simulations has revealed no such thing. Instead, they say, the earlier claims stemmed from the common problem of interpreting...

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Graphene loudspeaker could rival commercial speakers and earphones!!!

Graphene sounds Researchers in the US have made a graphene loudspeaker that has an excellent frequency response across the entire audio frequency range (20 Hz–20 kHz). While the speaker has no specific design, it is already as good as, or even better than, certain commercial speakers and earphones in terms of both frequency response and power consumption. Loudspeakers work by vibrating a thin diaphragm. These vibrations then create pressure waves in surrounding air that produce different...

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