Orientational correlations in confined DNA

Details Orientational correlations in confined DNA Orientational correlations in confined DNA

2012-01-13

arxiv.org/abs/1201.2961v2

Physics

Condensed Matter

Soft Condensed Matter

4 pages, 4 figures

Scientific paper

We study how the orientational correlations of DNA confined to a channel depend on the channel diameter D by means of Monte-Carlo simulations and a mean-field theory. We show how local correlations influence global properties of the DNA. The correlations determine, for example, the dependence of the end-to-end distance r_z of the DNA molecule upon D. We find that this dependence is in general not of power-law form. We have experimentally measured the extension of DNA in nanochannels. Tapered channels provide the necessary resolution to study the dependence of the extension upon D. Experimental and theoretical results are in qualitative agreement.

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