In situ observation of cluster formation during nanoparticle solution casting on a colloidal film

We present a real-time study of the nanostructuring and cluster formation of gold nanoparticles deposited in aqueous solution on top of a pre-structured polystyrene colloidal thin film. Cluster formation takes place at different length scales, from the agglomerations of the gold nanoparticles to dom...

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Bibliographic Details
Published in:Journal of physics. Condensed matter 2011-06, Vol.23 (25), p.254208-9
Main Authors: Roth, S V, Herzog, G, Körstgens, V, Buffet, A, Schwartzkopf, M, Perlich, J, Abul Kashem, M M, Döhrmann, R, Gehrke, R, Rothkirch, A, Stassig, K, Wurth, W, Benecke, G, Li, C, Fratzl, P, Rawolle, M, Müller-Buschbaum, P
Format: Article
Language:English
Subjects:
Accumulation
Clusters
Colloids
Condensed matter
Gold
Nanoparticles
Nanostructure
Polystyrene resins
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Summary:We present a real-time study of the nanostructuring and cluster formation of gold nanoparticles deposited in aqueous solution on top of a pre-structured polystyrene colloidal thin film. Cluster formation takes place at different length scales, from the agglomerations of the gold nanoparticles to domains of polystyrene colloids. By combining in situ imaging ellipsometry and microbeam grazing incidence small-angle x-ray scattering, we are able to identify different stages of nanocomposite formation, namely diffusion, roughness increase, layer build-up and compaction. The findings can serve as a guideline for nanocomposite tailoring by solution casting.
ISSN:0953-8984
1361-648X
DOI:10.1088/0953-8984/23/25/254208