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Graphene used to make world's smallest FM radio transmitter

A team of Columbia Engineering researchers has taken advantage of graphene's special properties - its mechanical strength and electrical conduction - and created a nano-mechanical system that can create FM signals, in effect the world's smallest FM radio transmitter.

Posted: Nov 18th, 2013

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2 for 1 in solar power

A process that could revolutionize solar energy harvesting has been efficiently demonstrated in solution for the first time.

Posted: Nov 17th, 2013

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The first battery electrode that heals itself

Researchers have made the first battery electrode that heals itself, opening a new and potentially commercially viable path for making the next generation of lithium ion batteries for electric cars, cell phones and other devices. The secret is a stretchy polymer that coats the electrode, binds it together and spontaneously heals tiny cracks that develop during battery operation.

Posted: Nov 17th, 2013

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Overcoming brittleness: New insights into bulk metallic glass

Bulk metallic glasses can be as strong or even stronger than steel, as malleable as plastics, conduct electricity and resist corrosion. These materials would seem to have it all save for one problem: they are often brittle, with a poor and uneven resistance to fatigue that makes their reliability questionable. The creation of multicomponent bulk-metallic glass composites is addressing this issue but the problem remains for monolithic metallic glasses, which are major components of bulk metallic composites.

Posted: Nov 17th, 2013

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New hologram technology created with nanoantennas

Researchers have created tiny holograms using a 'metasurface' capable of the ultra-efficient control of light, representing a potential new technology for advanced sensors, high-resolution displays and information processing.

Posted: Nov 15th, 2013

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