Negative Index and Electromagnetically Tunable Composites

Recent advances in electromagnetics have enabled methods of changing the dielectric constant as well as the index of refraction from negative through positive values. Such properties are the result of embedding periodic metal scattering elements into the material to create an effective medium response over desired frequency ranges. These functions have been integrated into a variety of polymer composites through various techniques. Current research has focused on the incorporation of a wire coil array into a host polymer.

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