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A Flexible Metamaterial with Negative Refractive Index at Visible Wavelength
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- Authors
- Muhan Choi, Jong-Ho Choe, Byungsoo Kang, Choon-Gi Choi
- Issue Date
- 2013-10
- Citation
- Current Applied Physics, v.13, no.8, pp.1723-1727
- ISSN
- 1567-1739
- Publisher
- Elsevier
- Language
- English
- Type
- Journal Article
- Abstract
- In this paper, we demonstrated a realization of a flexible metamaterial with negative refractive index operating at visible wavelength. With the help of Finite-Difference Time-Domain (FDTD) method, we could establish design rules for the metamaterial and analyze the characteristics of it. To this end, the fishnet structure with the unit cell size 185 nm by 240 nm was fabricated. Due to the polymer dielectric spacer between the metal-layers, the metamaterial is freestanding without base substrate and additional backside etching process. Crown Copyright © 2013 Published by Elsevier B.V. All rights reserved.
- KSP Keywords
- 185 nm, 40 nm, Design rule, Etching process, Finite-difference time-domain (FDTD) method, Flexible metamaterial, Polymer dielectric, Unit cell size, Visible wavelength, dielectric spacer, fishnet structure