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A high-performance, metal-free metamaterial in the near-IR

A high-performance, metal-free metamaterial in the near-IR. Theodore B. Norris, University of Michigan Ann Arbor, DMR 1120923. Layered stack of alternating layers of Al:ZnO (metal) and ZnO (dielectric) with sub-wavelength thick layers.

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A high-performance, metal-free metamaterial in the near-IR

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  1. A high-performance, metal-free metamaterial in the near-IR Theodore B. Norris, University of Michigan Ann Arbor, DMR 1120923 Layered stack of alternating layers of Al:ZnO (metal) and ZnO (dielectric) with sub-wavelength thick layers • Metals have many disadvantages as components of optical metamaterials. Semiconductor-based materials overcome these problems. We build a high performance, all-semiconductor-based metamaterial by replacing metal with heavily-doped zinc oxide and demonstrate negative refraction in this near-infrared metamaterial. This demonstration could lead to real-world metamaterial devices and unravel many new physical phenomena. Light beam incident on a metamaterial made by stacking alternating layers of Al:ZnO and ZnO undergoes negative refraction by bending the wrong way. Sponsored by NSF-MRSEC through contract DMR-1120923

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