Thursday, March 1, 2018 - 11:30am - 12:20pm
Robert Lipton (Louisiana State University)
We examine electric and magnetic fields inside metamaterials made from sub wavelength high contrast media. We introduce an analytic representation theory for fields inside optical metamaterials based on the spectra of Neumann Poincare operators. We apply this framework to construct microstructured media for controlling the direction of information propagation across different frequency bands.
Monday, December 12, 2016 - 1:30pm - 2:30pm
Owen Miller (Yale University)
How strongly can electromagnetic radiation interact with a linear, passive scattering body? Here I show that passivity—the condition the polarization currents do no work—in conjunction with the optical theorem imposes convex constraints on the currents (real or effective) that can be excited in any scatterer, leading to general shape- and/or material-independent bounds. One ramification is the prospect of hybrid dielectric–metal plasmonic structures that outperform even the theoretical limits for all-metal approaches.
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