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Proceedings Paper

Biaxial hyperbolic metamaterials
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Paper Abstract

We have fabricated biaxial hyperbolic metamaterials (BHMMs) using layered structures consisting of titanium dioxide (TiO2) and copper (Cu). In order to enable the biaxial property, an oblique angle deposition (OAD) technique is applied to deposit the dielectric layer. We have characterized the biaxial hyperbolic dispersion using variable angle spectroscopic ellipsometry (VASE) measurements in the wavelength range 400 nm to 900 nm. A noticeable difference be- tween in-plane permittivity components of the fabricated BHMM is observed to be 0.13 at 633 nm. The experimental characterization results have been in good agreement with the predictions of effective medium approximation (EMA) with an MSE of 18.

Paper Details

Date Published: 26 February 2020
PDF: 7 pages
Proc. SPIE 11289, Photonic and Phononic Properties of Engineered Nanostructures X, 1128929 (26 February 2020); doi: 10.1117/12.2546919
Show Author Affiliations
Changkee Hong, 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. 11289:
Photonic and Phononic Properties of Engineered Nanostructures X
Ali Adibi; Shawn-Yu Lin; Axel Scherer, Editor(s)

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