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metasurface News
Laser Identifies Size, Shape of Materials for Quicker Optical Design
ST. PETERSBURG, Russia, Sept. 7, 2016 — When optical diffraction was used to analyze the structure of a photonic crystal, researchers found that it created a characteristic light pattern that corresponded exactly to the number of scattering microscopic particles in the sample. The ability to determine the precise number of scatterings in optical materials has previously been done using electron or atomic-force microscopy only. A novel method for determining the properties of optical materials, done without the use of expensive
Metamaterial Switches States in Response to Light
SOUTHAMPTON, England, Aug. 16, 2016 — A metamaterial has been designed with a switchable metasurface that allows it to either block or transmit light waves in response to light pulses. Developed by researchers at the University of Southampton, the optically switchable metamaterial uses...
Ultrathin Metalens Captures Chiral, Spectral Images Simultaneously
CAMBRIDGE, Mass., July 4, 2016 — An ultracompact planar lens has been engineered to simultaneously form two images of the same object, with opposite helicity and within a single field-of-view. The chiral and spectral properties of the object can be simultaneously probed across the...
Active Cloak Most Broadband to Date
AUSTIN, Texas, Dec. 19, 2013 — An active invisibility cloak — that is, one designed to work with an external power source — could significantly broaden the device’s operation bandwidth, moving its applications beyond camouflage. A team at the University of Texas...
Phase-Shifted Flat Lens Creates Perfect Image
CAMBRIDGE, Mass., Aug. 24, 2012 — By moving the phase shifting of light to the surface of a lens instead of creating phase delays as it propagates through a material, Harvard engineers have created an ultrathin, flat lens that could potentially replace bulk components in optical...
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