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Electrochemical restructuring of plasmonic metamaterials
Publikationstyp
Journal Article
Date Issued
2011-01
Sprache
English
Author(s)
Ruther, Matthias
Linden, Stefan
Wegener, Martin
Journal
Volume
98
Issue
1
Article Number
013112
Citation
Applied Physics Letters 98 (1): 013112 (2011)
Publisher DOI
Scopus ID
Publisher
American Institut of Physics
Recent electrochemical experiments on gold-based photonic metamaterials have shown reversible optical modulation as well as an irreversible reduction in the plasmonic damping. Here, we systematically study the latter aspect as a possible means of postprocessing plasmonic gold nanoantennae arrays aiming at loss reduction. We characterize the samples by optical spectroscopy, electron microscopy, and atomic-force microscopy. For sub-10 nm gold thicknesses, the measured damping decreases by factors exceeding 3; for 20-30 nm thin structures, the obtained loss reduction still amounts to about 30%. © 2011 American Institute of Physics.
DDC Class
530: Physics