Berlin 2008 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 34: POSTERS Polymerphysics

CPP 34.10: Poster

Donnerstag, 28. Februar 2008, 17:00–19:30, Poster A

Surface-pattern recognition by molecular fluids — •Timo Poppmann and Martin Schoen — Stranski-Laboratorium für Physikalische und Theoretische Chemie, Technische Universität Berlin, Germany

We investigate the phase behavior of molecular, rodlike fluids confined between nonplanar substrates by means of canonical ensemble Monte Carlo(CEMC) simulations. Substrates are infinitely long in the y-direction and consist of a periodic sequence of wedge-shaped furrows of depth D and periodicity s_x in the x-direction. Moreover, the substrates stay in register in the x-direction. The interaction potentials are of the Lennard-Jones type with an anchoring orientation function g(û). We find a clear correlation between the preferred orientation of molecules and the fluid density in the vicinity of the substrates.