Excluded volume effects on semiflexible ring polymers.
Two-dimensional semiflexible polymer rings are studied both by imaging circular DNA adsorbed on a mica surface and by Monte Carlo simulations of phantom polymers as well as of polymers with finite thickness. Comparison of size and shape of the different models over the full range of flexibilities shows that excluded volume caused by finite thickness induces an anisotropic increase of the main axes of the conformations, a change of shape, accomplished by an enhanced correlation along the contour.
Arnold Sommerfeld Center for Theoretical Physics and Center for NanoScience, Department of Physics, Ludwig-Maximilians-Universität München, München, Germany.
Fabian
F
Drube
Karen
K
Alim
Guillaume
G
Witz
Giovanni
G
Dietler
Erwin
E
Frey
D000327:Adsorption; D000538:Aluminum Silicates / Q000737:chemistry*; D003198:Computer Simulation; D004270:DNA, Circular / Q000737:chemistry*; D009010:Monte Carlo Method; D036103:Nanotechnology / Q000379:methods; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D013499:Surface Properties
D000538:Aluminum Silicates; D004270:DNA, Circular; D011108:Polymers; C011934:mica