Regensburg 2010 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

BP 5: Posters: Biopolymers and Biomaterials

BP 5.15: Poster

Montag, 22. März 2010, 17:15–20:00, Poster B1

Dynamical stretching response of a biopolymer held by an optical trap — •Sebastian Sturm and Klaus Kroy — Institut für theoretische Physik, Universität Leipzig, Vor dem Hospitaltore 1, 04103 Leipzig

The dynamical nonequilibrium response of stiff and semiflexible polymers to external stimuli has been a subject of intense theoretical research during the last decade. Whereas pioneering works on the subject catered to very specific experimental scenarios, a subsequently developed multiple-scale (MSPT) analysis unified the previous approaches under a systematic and rigorous mathematical framework. Building on this MSPT theory, a large number of different external perturbations have found theoretical treatment, with BD simulation data corroborating the analytical results [1]. To allow for direct experimental verification of the abovementioned MSPT theory, we extend it to the practically relevant case of a semiflexible polymer held by means of an optical trap.

[1] B. Obermayer, W. Möbius, O. Hallatschek, E. Frey and K. Kroy, Freely relaxing polymers remember how they were straightened, Phys. Rev. E (2009)