Regensburg 2013 – wissenschaftliches Programm

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BP: Fachverband Biologische Physik

BP 11: Posters: Statistical Physics in Biological Systems (joint with DY)

BP 11.4: Poster

Montag, 11. März 2013, 17:30–19:30, Poster B2

Interaction between Looped-Star Polymers — •Dieter Heermann and Benoit Knecht — Institut für Theoretische Physik, Universität Heidelberg, Philosophenweg 19, 69120 Heidelberg

We study the properties of looped star polymers, in which each arm is a ring that can be over- or underwound and compare them to the classic linear-arm star polymer. Looped star polymers are more compact and overwounding increases their density. The effective repulsion between looped stars is similar to that of linear star polymers with twice as many arms half the length, following a logarithmic--Gaussian potential. The force pushing the arms outwards is more than twice as strong for looped star polymers than it is for linear star polymers for a number of arms f>2.