Control of nanoparticle aggregation in aerogel hosts

Michael D W Grogan, S C Heck, L M Xiao, R England, S A Maier, Timothy A Birks

Research output: Contribution to journalArticle

7 Citations (Scopus)
67 Downloads (Pure)

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.
Original languageEnglish
Pages (from-to)241-245
Number of pages5
JournalJournal of Non-Crystalline Solids
Volume358
Issue number2
DOIs
Publication statusPublished - 15 Jan 2012

Fingerprint

Aerogels
aerogels
Agglomeration
Nanoparticles
nanoparticles
Nonlinear optics
nonlinear optics
Surface plasmon resonance
surface plasmon resonance
Silicon Dioxide
Gold
Gels
penetration
breakdown
Silica
Electric fields
gels
gold
silicon dioxide
Wavelength

Cite this

Control of nanoparticle aggregation in aerogel hosts. / Grogan, Michael D W; Heck, S C; Xiao, L M; England, R; Maier, S A; Birks, Timothy A.

In: Journal of Non-Crystalline Solids, Vol. 358, No. 2, 15.01.2012, p. 241-245.

Research output: Contribution to journalArticle

Grogan, MDW, Heck, SC, Xiao, LM, England, R, Maier, SA & Birks, TA 2012, 'Control of nanoparticle aggregation in aerogel hosts', Journal of Non-Crystalline Solids, vol. 358, no. 2, pp. 241-245. https://doi.org/10.1016/j.jnoncrysol.2011.09.018
Grogan, Michael D W ; Heck, S C ; Xiao, L M ; England, R ; Maier, S A ; Birks, Timothy A. / Control of nanoparticle aggregation in aerogel hosts. In: Journal of Non-Crystalline Solids. 2012 ; Vol. 358, No. 2. pp. 241-245.
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