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Electrochemical restructuring of plasmonic metamaterials

Ruther, M.; Shao, L.H.; Linden, S.; Weissmüller, J.; Wegener, M.

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 nm thin structures, the obtained loss reduction still amounts to about 30%.

Zugehörige Institution(en) am KIT Institut für Angewandte Physik (APH)
Institut für Nanotechnologie (INT)
Publikationstyp Zeitschriftenaufsatz
Jahr 2011
Sprache Englisch
Identifikator ISSN: 0003-6951
KITopen ID: 1000027173
HGF-Programm 43.14.01; LK 01
Erschienen in Applied Physics Letters
Band 98
Heft 1
Seiten 013112/1 - 3
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