期刊
NANO LETTERS
卷 10, 期 4, 页码 1445-1449出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl1003575
关键词
DNA; confinement; excluded volume; semiflexible polymers; polymer rings
类别
资金
- DFG [SFB 486]
- LMUinnovativ project Functional Nanosystems (FuNS)
- Studienstiftung des deutschen Volkes
- Swiss National Science Foundation [200020-116515, 200020-25159]
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.
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