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New Metamaterial Can Produce More Efficient Solar Cells

A negative-index metamaterial that bends light in the 'wrong' direction could have several valuable applications

Metamaterials are manmade substances designed to do some very weird things that natural materials don’t.

The path of a beam of light through a natural material like glass is predictable, but scientists from the California Institute of Technology (Caltech) have engineered an optical material that bends light in the wrong direction.

This new negative-index metamaterial (NIM) could have several valuable uses including invisibility cloaking, superlensing (imaging nano-scale objects using visible light) and improved light collection in solar cells.

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