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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); doi: 10.1117/12.451654
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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