News

November 17, 2015

Tomer's recent publication, Widely Tunable Infrared Antennas Using Free Carrier Refraction, was just published in Nano Letters. In this work we fabricate spherical Si and Ge nanoparticles and measure their associated infrared Mie resonances. We show that single nanoparticles can exhibit wavelength shifts arising from continuous doping-dependent tuning of the permittivity between dielectric (epsilon ~ 14) and metallic (epsilon ~ -20) regimes.

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November 16, 2015

Nikita's paper, Hybrid Optical Antennas with Photonic Resistors, was just published in Optics Express. In this work, we simulate the infrared scattering properties of metal-semiconductor-metal split dipole antennas. We examine the change in scattering as the semicondcutor carrier concentration is varied between capacitive (low carrier density) and inductive/conductive (high carrier density) regimes. The most profound effects are seen at intermediate carrier densities where the semiconductor "load" acts as an efficient "photonic resistor", completely suppressing the scattering response.

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June 17, 2015

Our work on "Reconfigurable Semiconductor Phased Array Metasurfaces" was recently published in ACS Photonics. The article was chosen as an "ACS Editors' Selection". The American Chemical Society selects one paper a day across all their journals to highlight as being of particular interest to a broader audience. Given that they publish over 40,000 articles a year, this is quite an honor!

http://pubs.acs.org/doi/abs/10.1021/acsphotonics.5b00132

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January 01, 2015

Thanks to the University of California for our Multicampus Research Program and Initiative grant on Quantum Tunable Materials

May 01, 2014

Congrats to Tanya Das on winning an award for her poster presented at the Spring MRS. Congrats to Steven for winning an award for his talk presented at the Spring MRS.

April 30, 2014

Congratulations to Nikita Butakov for getting an NDSEG fellowship! Many thanks to the DOD!

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