CalTech's new nanofocusing plasmonic waveguide is a tapered silica glass structure covered with a thin layer of gold
CalTech's new nanofocusing plasmonic waveguide
Engineers at the California Institute of Technology (CalTech) and the University of California at Berkeley have developed a nanofocusing waveguide, a tiny passive plasmonic device which is capable of concentrating light onto a spot a few nanometers in size. In so doing, they have sidestepped the diffraction-limited nature of light, which normally prevents focusing light to a spot smaller than its own wavelength. This remarkable feat may lead to new optoelectronic applications in computing, communications, and imaging.
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