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Dispersion Engineering in Electromagnetic Meta-materials

Wednesday, April 18, 3:30PM – 5PM
POB 6.304

Robert Lipton

We present an approach for designing meta-material crystals with novel electromagnetic properties. We focus on the computational design of double negative meta-materials that offer negative index behavior useful for novel applications ranging from cloaking to super lensing. The class of meta-material crystals discussed here are envisioned for optical applications and consist of high dielectric inclusions covered with metallic coatings.

In this presentation we introduce a new type of convergent power series expansion for electromagnetic fields inside meta-material crystals. The leading order theory provides a theoretical basis for engineering frequency ranges across which the phase velocity of propagating waves oppose the direction of electromagnetic power flow. Several examples are provided that illustrate the method.

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