Control of nanoparticle aggregation in aerogel hosts


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.

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    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.


    Item Type Articles
    CreatorsGrogan, M. D. W., Heck, S. C., Xiao, L. M., England, R., Maier, S. A. and Birks, T. A.
    DepartmentsFaculty of Science > Physics
    Publisher StatementBirks_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
    ID Code28706


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