Dresden 2009 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 13: POSTERS Polymer Physics
CPP 13.8: Poster
Tuesday, March 24, 2009, 14:00–16:30, P3
Investigation of Laser Heating Effects on Polymerfilms — •Ralf St. Kappes1,2 and Jochen S. Gutmann1,2 — 1Joh.-Gutenberg University, Mainz, Germany — 2Max-Planck-Institute for Polymer Research, Mainz, Germany
With Laser heating it is possible to deposit large amounts of energy in short time scales to a small region and by that create far from equilibrium conditions. In that context, we applied a NIR-laser pulse of microsecond duration to a thin PS-Film, doped with a dye for energy conversion, observing the spectrum of the thermal radiation. Therefore we built up an optical detection system using interference filters and a microsecond-gated camera as detector. By then fitting Planck law to the spectral curve we were able to obtain the temperature and could show that the peak temperature is in the order of 1000 K, with a non-linear dependence of the dye concentration. Furthermore with this approach it was possible to obtain a temperature-time-profile and investigate the behaviour of the thin film system under such extreme conditions.