Nanotechnology

INSIDER : Energy
"Green" Device Generates Electricity from Motion

A wireless triboelectric nanogenerator (W-TENG) generates electricity from motion and vibrations. It consists of a biodegradeable polymer and graphene. When the two materials are brought...

INSIDER : Nanotechnology
Scientists Develop Extreme Light Trapping Technology

A silicon solar cell harvests the energy of the sun as light travels down through light-absorbent silicon. To reduce weight and cost, solar cells are thin, and while silicon absorbs...

INSIDER : Photonics/Optics
Engineers Invent Method to Control Light Propagation in Waveguides

A team of Columbia Engineering researchers, led by Applied Physics Assistant Professor Nanfang Yu, has invented a method to control light propagating in confined pathways, or waveguides, with high efficiency by using nano-antennas. To demonstrate this technique, they built...

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