Tunable optical properties of nanoporous gold leaf metamaterials

S. Rout; Z. Qi; M. Biener; D. Courtwright; J. Adrien; M. Shahabuddin; C. E. Bonner Jr.; N. Noginova; M. A. Noginov

doi:10.1117/12.2571003

20 August 2020 Tunable optical properties of nanoporous gold leaf metamaterials

S. Rout, Z. Qi, M. Biener, D. Courtwright, J. Adrien, M. Shahabuddin, C. E. Bonner Jr., N. Noginova, M. A. Noginov

Proceedings Volume 11460, Metamaterials, Metadevices, and Metasystems 2020; 1146023 (2020) https://doi.org/10.1117/12.2571003
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Conference Poster

Abstract

We report on the optical properties of nanoporous gold leaf (NPGL) metamaterials consisting of single and multiple-fold layers, and having different pore and ligament sizes. Due to their complex structure, such metamaterials have a unique optical property, which distinguishes them from homogeneous gold films. Thus, the transmission spectra of NPGLs feature two characteristic peaks positioned at ~ 490 nm and ~560 nm to 605 nm. The most notable result of this study is that the optical properties of NPGLs can be tuned by changing the dielectric environment and by applying voltage in an electrochemical cell.

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Citation Download Citation

S. Rout, Z. Qi, M. Biener, D. Courtwright, J. Adrien, M. Shahabuddin, C. E. Bonner Jr., N. Noginova, and M. A. Noginov "Tunable optical properties of nanoporous gold leaf metamaterials", Proc. SPIE 11460, Metamaterials, Metadevices, and Metasystems 2020, 1146023 (20 August 2020); https://doi.org/10.1117/12.2571003

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