Control of nanoparticle aggregation in aerogel hosts

Reference:

Grogan, M. D. W., Heck, S. C., Xiao, L. M., England, R., Maier, S. A. and Birks, T. A., 2012. Control of nanoparticle aggregation in aerogel hosts. Journal of Non-Crystalline Solids, 358 (2), pp. 241-245.

Official URL:

http://dx.doi.org/10.1016/j.jnoncrysol.2011.09.018

Abstract

Plasmonic aerogel containing 50 nm gold nanoparticles is made using a modified 2-step method that maintains control over the gel time while preventing nanoparticle aggregation. Strong narrow surface plasmon resonances verify that the nanoparticles are well dispersed within the silica matrix, and enable applications in sensing. SERS, nonlinear optics or plasmonic gain. Discrepancies between measured and simulated resonance wavelengths are attributed to the breakdown of the effective index approximation, due to the short-scale penetration of the resonance electric field into the host medium.

Details

Item Type	Articles
Creators	Grogan, M. D. W., Heck, S. C., Xiao, L. M., England, R., Maier, S. A. and Birks, T. A.
DOI	10.1016/j.jnoncrysol.2011.09.018
Departments	Faculty of Science > Physics
Publisher Statement	Birks_JNCS_2012_358_2_241.pdf: NOTICE: this is the author’s version of a work that was accepted for publication in Journal of Non-Crystalline Solids. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Journal of Non-Crystalline Solids, vol 358, issue 2, 2012, DOI 10.1016/j.jnoncrysol.2011.09.018
Refereed	Yes
Status	Published
ID Code	28706

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