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Pulling Pinned Polymers and Unzipping DNA | | David K. Lubensky
; David R. Nelson
; | | Date: |
26 Apr 2000 | | Journal: | Phys. Rev. Lett. _85_, 1572 (2000) | | Subject: | Soft Condensed Matter; Disordered Systems and Neural Networks; Biological Physics; Biomolecules | cond-mat.soft cond-mat.dis-nn physics.bio-ph q-bio.BM | | Affiliation: | Harvard Univ. | | Abstract: | We study a class of micromanipulation experiments, exemplified by the pulling apart of the two strands of double-stranded DNA (dsDNA). When the pulling force is increased to a critical value, an ``unzipping’’ transition occurs. For random DNA sequences with short-ranged correlations, we obtain exact results for the number of monomers liberated and the specific heat, including the critical behavior at the transition. Related systems include a random heteropolymer pulled away from an adsorbing surface and a vortex line in a type II superconductor tilted away from a fragmented columnar defect. | | Source: | arXiv, cond-mat/0004423 | | Other source: | [GID 992342] pmid10970557 | | Services: | Forum | Review | PDF | Favorites | |
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