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Group designs new nanoscale holographic interface

In our recent paper, we report the discovery of a new type of holographic interface, which after being designed for a given wavelength, is able …

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Unusual thermal emissivity of vanadium oxide structure

Members of the group have discovered some unusual thermal emissivity properties of a vanadium oxide/sapphire structure which may have application in thermal camouflage, thermal tagging …

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Coupling to flatland

What happens when three-dimensional matter interacts with two-dimensional light? The answers are not quite intuitive – and offer some fascinating new perspectives for the development …

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Group publishes proposal for emissive renewable energy harvesters

Energy can be harvested any time heat flows spontaneously from a hotter to a cooler body. Solar cells, for example, avail of the large …

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Work on Ultrathin Color Coatings Profiled by SEAS

Former graduate student and post-doc Mikhail Kat’s work on nanometer-thin metallic optical coatings done in the CNS facility at Harvard has been profiled by Harvard …

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Surface plasmon analogue to Cherenkov radiation subject of Nature...

Researchers in the group have created a 2-dimensional, surface plasmon analogue of Cherenkov radiation. By exciting a row of slits in a metal film …

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Exotic chirality-sorting optical force proposed

Transverse spin momentum of an evanescent field (such as one generated by a totally internally reflecting beam of light) can be converted to linear momentum …

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Broadband chiral metasurface holograms

By revisiting a historical method of holography and combining it with metasurfaces, Khorasaninejad, Ambrosio, and colleagues in our group have demonstrated broadband chiral meta-holograms with …

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Measuring light forces in the sub-femtonewton regime

One femtonewton is the force a dust particle about the size of a human cell would feel, illuminated by a ray of sunlight. It is …

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Flat Lens for Visible Wavelengths

Despite tremendous interest in planar lenses in the visible spectrum, there has been no solution that simultaneously satisfies the demands for high numerical aperture (NA) …

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