
This is an artist’s representation of a conceptual design for the color detector, which uses thermoelectric structures with arrays of nanoscale wires that absorb different wavelengths of light based on their width. Credit: Harry Atwater and Kelly Mauser/Caltech
Engineers at Caltech have for the first time developed a light detector that combines 2 disparate technologies – nanophotonics, which manipulates light at the nanoscale, and thermoelectrics, which translates temperature differences directly into electron voltage – to distinguish different wavelengths (colors) of light, including both visible and infrared wavelengths, at high resolution...
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