Author:
Rout Sangeeta,Qi Zhen,Biener Monika M.,Courtwright Devon,Adrien Jakeem C.,Mills Ezekiel,Shahabuddin Mohammad,Noginova Natalia,Noginov Mikhail A.
Abstract
AbstractWe have studied optical properties of single-layer and multi-fold nanoporous gold leaf (NPGL) metamaterials and observed highly unusual transmission spectra composed of two well-resolved peaks. We explain this phenomenon in terms of a surface plasmon absorption band positioned on the top of a broader transmission band, the latter being characteristic of both homogeneous “solid” and inhomogeneous “diluted” Au films. The transmission spectra of NPGL metamaterials were shown to be controlled by external dielectric environments, e.g. water and applied voltage in an electrochemical cell. This paves the road to numerous functionalities of the studied tunable and active metamaterials, including control of spontaneous emission, energy transfer and many others.
Funder
U.S. Department of Energy
U.S. Department of Defense
Air Force Office of Scientific Research
NSF EiR
Publisher
Springer Science and Business Media LLC
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