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 |
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| Institution: | 1. Creative Research Center for Graphene Electronics, Electronics and Telecommunications Research Institute (ETRI), Daejeon 305-700, Republic of Korea;2. School of Electronics Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea;3. Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea |
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| 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. |
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| Keywords: | Flexible metamaterial Fishnet structure Negative refractive index Visible wavelength Focused ion beam |
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