Photonic crystals fabricated from gold-silica core-shell nanoparticles

Yu Lu; Yadong Yin; Younan Xia

doi:10.1117/12.451654

4 November 2002 Photonic crystals fabricated from gold-silica core-shell nanoparticles

Yu Lu, Yadong Yin, Younan Xia

Proceedings Volume 4809, Nanoscale Optics and Applications; (2002) https://doi.org/10.1117/12.451654
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

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.

Citation Download Citation

Yu Lu, Yadong Yin, and Younan Xia "Photonic crystals fabricated from gold-silica core-shell nanoparticles", Proc. SPIE 4809, Nanoscale Optics and Applications, (4 November 2002); https://doi.org/10.1117/12.451654

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