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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 31: Poster: Polymer Dynamics

CPP 31.9: Poster

Mittwoch, 24. März 2010, 17:30–19:00, Poster C

Force-induced conformational changes in single polymer chain — •Alexander Gerstmayr, Masoud Amirkhani, and Othmar Marti — Institute of Experimental Physics, Ulm University

During the last decade, conformational properties of macromolecules and its response to an external stimulation have received many attention from various disciplines of scientists. In this work an external stimulation is applied to a single chain of polymer and in-situ atomic force microscopy (AFM) is performed to study the conformational change of the polymer's chain. We used different gas environments and an electric field to stimulate conformational change and chain rotation. The polymer's chain has an extended form in the presence of water vapor and a globule form in the presence of ethanol. We applied torque to the polymer's chain by an uniform electric field that causes an orientation of the chain.