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New Device Hides, on Cue, from Infrared Cameras

Published: November 26, 2012.
By Harvard University
http://www.harvard.edu

Cambridge, Mass. - November 26, 2012 - Now you see it, now you don't. A new device invented at the Harvard School of Engineering and Applied Sciences (SEAS) can absorb 99.75% of infrared light that shines on it. When activated, it appears black to infrared cameras. Composed of just a 180-nanometer-thick layer of vanadium dioxide (VO2) on top of a sheet of sapphire, the device reacts to temperature changes by reflecting dramatically more or less infrared light.


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Keywords

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Cluster Centroids (Superclass Keywords)

Instrument, Capasso, Absorption, Kats, Pgaa, Colors, Thickness, Fraikin, Seas, Ramanathan, Analysis, Semiconductors, Film, Neutrons, Barbara, Light, Harvard, Javey, Ucsb, Sanford-Burnham, Germanium, Color, Optoelectronic, Santa, Milligram, Meteorite, Background, Lab, Optical, Berkeley, Arsenide, Indium, Reflect, Membranes, Samples, Reflective, Ultrathin, Thin-Film, Band, Incident, Absorber, Materials, Vinton, Transparent, Revay, …

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