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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 35: Poster: Micro- and Nanofluidics

CPP 35.22: Poster

Mittwoch, 16. März 2011, 17:00–19:00, P2

Gold Nanoparticle Deposition onto a Microstructured Polymer-coated Substrate Using a Flow-Stream Technique — •Gerd Herzog^1,2, Adeline Buffet¹, Jan Perlich¹, Mottakin M. Abul Kashem¹, Matthias Schwartzkopf¹, Gunthard Benecke¹, Volker Körstgens³, Peter Müller-Buschbaum³, Rainer Gehrke¹, Wilfried Wurth², and Stephan V. Roth¹ — ¹HASYLAB at DESY, Notkestr. 85, D-22607 Hamburg, Germany — ²Universität Hamburg, Institut für Experimentalphysik, Luruper Chaussee 149, D-22761 Hamburg, Germany — ³TU München, Physik Department, LS Funkt. Mat., James-Franck-Str. 1, 85748 Garching, Germany

Metal nanostructures are widely used in electronic components. Production of nanowires by deposition of gold nanoparticles out of a suspension via flow-stream technique onto a nanostructured polymer-coated substrate might offer an easy, cheap and fast solution for industrial application [1].

Here, we present an experiment in which a colloidal suspension of polystyrene nanoparticles in water is spin-coated onto a glass substrate which is subsequently rubbed with velvet to create micrometer-sized channels. A microfluidic device is used to let an aqueous suspension of gold nanoparticles flow across the coated substrate [2]. In situ GISAXS shows the progressive deposition of gold nanoparticles onto the substrate.

[1] E. Metwalli et al., Langmuir 2009, 25(19), 11815

[2] J.-F. Moulin et al., Rev. Sci. Instrum. 79, 015109 (2008)