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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 40: Nanoparticles and Composite Materials I

CPP 40.2: Vortrag

Donnerstag, 25. März 2010, 09:45–10:00, H48

Fibre-like polymer-metal nanocomposites - the morphology of a gold layer on curved polymer surfaces — •Stephan V. Roth¹, Rainer Gehrke¹, Ulla Vainio¹, Kai Schlage¹, Ralf Röhlsberger¹, Manfred Burghammer², Christian Riekel², Volker Körstgens³, Ezzeldin Metwalli³, and Peter Müller-Buschbaum³ — ¹HASLYAB at DESY, Notkestr. 85, D-22607 Hamburg, Germany — ²ESRF, 6rue Jules Horowitz, F-38043 Grenoble, France — ³Physik-Department E13, TU München, James-Franck-Str. 1, D-85748 Garching, Germany

Polymer-metal nanocomposites are used in many areas of sensor techniques, information technology and biotechnology [1].These devices exploit the plasmon resonances of the confined electron gas in the metal nanostructures and typically exhibit a flat geometry. However, using aligned cylindrical, wire- or stripe-like arrays of nanoparticles enables to install plasmon waveguide devices which allow for guiding electromagnetic energy below the diffraction limit of light [2]. In our approach we use a two step technique to produce a scalable stripe-like flexible geometry. We indent a scalable biofibre in a polymer film - creating a polymeric channel - and subsequently deposit metal via sputter-deposition [3]. We follow the topography of the metal layer through the cross-section of the polymeric channel. Our findings show a strong correlation of nanoparticle morphology and cross-sectional position.

[1] Wolkenhauer et al., Appl. Phys. Lett. 89 (2006) 054101 [2] Maier et al., Nature Mat. 2, 229 (2003) [3] Metwalli et al., Langmuir 24, 4265 (2008)