Abstract
Metasurfaces have been established as a viable platform for flat optical devices [1]. However, the optical meta-surfaces realized so far were situated on a substrate having macroscale thickness. Naturally, substrates can alter the properties of the metasurfaces undesirably. They do not only degrade the ultra-thin nature of metasurfaces but can also create additional loss channels such as reflections. Consequently, a variety of platforms were suggested in order to create substrate-free metasurfaces [3]. However, none of the approaches demonstrated so far allows for the realization of optical metasurfaces with nanoscale thickness. Here, we experimentally demonstrate ultra-thin plasmonic metasurfaces consisting of square arrays of U-shaped gold nano-resonators [2] situated on Carbon Nanomembranes (CNMs) with a thickness of only 1.2 nm. Carbon nanomenbranes belong to the family of two-dimensional materials and they have insulating properties. Their thickness can be adjusted (0.5 to 3 nm) by the choice of employed precursor molecules [4].
© 2019 IEEE
PDF ArticleMore Like This
Xingjie Ni, Alexander V. Kildishev, Satoshi Ishii, and Vladimir M. Shalaev
QM4A.4 CLEO: QELS_Fundamental Science (CLEO:FS) 2013
A. Kuchmizhak, D. Pavlov, A. Porfirev, and M. Lapine
eh_5_2 European Quantum Electronics Conference (EQEC) 2019
Hongwei Zhao, Ran Zhang, Hamid T. Chorsi, Wesley Britton, Yuyao Chen, Prasad P. Iyer, Jon A. Schuller, Luca Dal Negro, and Jonathan Klamkin
NoTh3B.6 Novel Optical Materials and Applications (NOMA) 2019