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Mid-infrared Hyperbolic Metamaterial Based on Graphene-dielectric Multilayers

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Abstract

We have designed and fabricated a mid-infrared hyperbolic metamaterial composed of alternating Al2O3 and chemical-vapor-deposited graphene. Infrared ellipsometry shows a topological transition from elliptical to hyperbolic dispersion at the wavelength of 7.4 μm.

© 2015 Optical Society of America

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