Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 8: Poster: Nanoparticles and Composite Materials
CPP 8.24: Poster
Montag, 26. März 2012, 17:30–20:00, Poster A
Ellipsometry on GLAD samples: Applications and model calculation — •Johannes F. H. Risch1, Matthias Schwartzkopf1, Mottakin M. Abul Kashem1, Gunthard Benecke1,2, Adeline Buffet1, Denise Erb1, Berit Heidmann1, Gerd Herzog1, Volker Körstgens3, Ezzeldin Metwalli3, Roman Mannweiler1, Jan Perlich1, André Rothkirch1, Kai Schlage1, Peter Müller-Buschbaum3, Ralf Röhlsberger1, Rainer Gehrke1, and Stephan V. Roth1 — 1DESY, Notkestr. 85, D-22607 Hamburg — 2MPIKG, Dep. Biomat, Am Mühlenberg 1, D-14424 Potsdam-Golm — 3TU München, Physik Department E13, James-Franck-Str. 1, D-85748 Garching
Polymers combined with metals have a wide field of application in technology and industry. For the installation of tunable optical properties in nanocomposites, glancing angle deposition (GLAD) [1] has been proven to be a reliable method due to the high acceptance of vacuum sputter deposition in industrial processes. We investigated glancing angle deposition of gold on top of a colloidal array (polystyrene nanospheres), which serves as nucleation points for gold clusters. Using Imaging ellipsometry, we investigated the change of optical properties caused by structural deposition of polystyrene-nanospheres and gold layers. On the basis of gold pins, being inclined with respect to the surface normal, on polystyrene spheres we obtain a change of the refraction indices and a varying apparent layer thickness as function of the orientation of the GLAD sample.
[1] Gonzalez-Garcia et al., ChemPhysChem 11, 2005 (2010)