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Multilayer hyperbolic metamaterial based on alternating TiO2/Cu layers
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Paper Abstract

A multilayer hyperbolic metamaterial (HMM), fabricated from alternating thin films of metal and dielectric, displays a hyperbolic, anisotropic dispersion relation due to the coupling of excited surface plasmons. The design, fabrication, and characterization of an HMM based on TiO2 / Cu alternating layers with a metal-to-dielectric fill factor of 67% is presented. The layers were deposited onto glass and silicon substrates using physical vapor deposition (PVD) with an electron beam evaporator and then characterized using ellipsometry. According to the effective medium theory, this design shows an epsilon-near-zero (ENZ) line near the Helium-Neon wavelength of 633 nm. Our experimental measurements are in good agreement with the theoretical predictions.

Paper Details

Date Published: 4 March 2019
PDF: 8 pages
Proc. SPIE 10927, Photonic and Phononic Properties of Engineered Nanostructures IX, 1092711 (4 March 2019); doi: 10.1117/12.2507999
Show Author Affiliations
James Dilts, Rose-Hulman Institute of Technology (United States)
Azad Siahmakoun, Rose-Hulman Institute of Technology (United States)
Hossein Alisafaee, Rose-Hulman Institute of Technology (United States)


Published in SPIE Proceedings Vol. 10927:
Photonic and Phononic Properties of Engineered Nanostructures IX
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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