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Explainer: What is a superconductor?

Materials can be divided into two categories based on their ability to conduct electricity. Metals, such as copper and silver, allow electrons to move freely and carry with them electrical charge. Insulators, ...

dateMar 05, 2015 in Superconductivity
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Graphene multiplies the power of light

Could graphene turn light to electricity? Scientists have shown that graphene can convert a single photon into multiple electrons, showing much promise for future photovoltaic devices.

dateJan 19, 2015 in Nanophysics
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