Metal-based photonic coatings from electrochemical deposition

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Journal / PublicationJournal of the Electrochemical Society
Volume156
Issue number11
Publication statusPublished - 2009

Abstract

Plasmonic materials offer the remarkable ability to manipulate light by metal-dielectric features significantly smaller than the wavelengths of free space photons. The fabrication of such minuscule features for the desired plasmonic properties, however, remains challenging. Here, we report an economical and versatile bottom-up approach that combines electrodeposition and de-alloying techniques for fabricating elaborate metal-based structures, achieving structural resolutions comparable to the present lithography techniques. We present our studies on the metal-based counterpart of the rugate filter. These metal-based photonic films are porous, magnetic, and feature strong optical responses in visible wavelengths, while their structural periodicities are an order of magnitude smaller than the light's free space wavelength. © 2009 The Electrochemical Society.