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Proceedings Paper

Photonic crystals fabricated from gold-silica core-shell nanoparticles
Author(s): Yu Lu; Yadong Yin; Younan Xia
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Paper Abstract

An approach to metallic photonic crystals is demonstrated by using gold-silica core-shell colloids as the building blocks. The formation of gold-silica core-shell nanoparticles involved a base-catalyzed hydrolysis of precursor TEOS and subsequent condensation of silica onto the surfaces of gold cores. The obtained core-shell colloids were monodispersed in size and their shell thickness could be controlled in the range of a few nanometers to about 500 nm. The core diameter could also be varied from ~5 nm to ~100 nm. The core-shell colloids were then employed as building blocks to self-assemble highly ordered three-dimensional photonic crystals using a non-lithographic method. The photonic band-gap properties were characterized by taking the transmittance and reflectance spectra.

Paper Details

Date Published: 4 November 2002
PDF: 5 pages
Proc. SPIE 4809, Nanoscale Optics and Applications, (4 November 2002);
Show Author Affiliations
Yu Lu, Univ. of Washington (United States)
Yadong Yin, Univ. of Washington (United States)
Younan Xia, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 4809:
Nanoscale Optics and Applications
Guozhong Cao; Wiley P. Kirk, Editor(s)

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