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Nanoantennas Create Tunable Color Filter

Metal nanoparticles shine with customizable color

Kenneth Crozier, Associate Professor of Electrical Engineering at the Harvard School of Engineering and Applied Sciences (SEAS), and colleagues have engineered the size and shape of metal nanoparticles so that the color they appear strongly depends on the polarization of the light illuminating them. The nanoparticles can be regarded as antennas—similar to antennas used for wireless communications—but much smaller in scale and operating at visible frequencies.

Posted in Nanotech, SciTech.