Elasticity of semiflexible polymers in two dimensions
We study theoretically the entropic elasticity of a semiflexible polymer, such as DNA, confined to two dimensions. Using the worm-like-chain model we obtain an exact analytical expression for the partition function of the polymer pulled at one end with a constant force. The force-extension relation...
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| Veröffentlicht in: | Physical review. E, Statistical, nonlinear, and soft matter physics Statistical, nonlinear, and soft matter physics, 2005-10, Vol.72 (4 Pt 1), p.041918-041918, Article 041918 |
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| container_end_page | 041918 |
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| container_issue | 4 Pt 1 |
| container_start_page | 041918 |
| container_title | Physical review. E, Statistical, nonlinear, and soft matter physics |
| container_volume | 72 |
| creator | Prasad, Ashok Hori, Yuko Kondev, Jané |
| description | We study theoretically the entropic elasticity of a semiflexible polymer, such as DNA, confined to two dimensions. Using the worm-like-chain model we obtain an exact analytical expression for the partition function of the polymer pulled at one end with a constant force. The force-extension relation for the polymer is computed in the long chain limit in terms of Mathieu characteristic functions. We also present applications to the interaction between a semiflexible polymer and a nematic field, and derive the nematic order parameter and average extension of the polymer in a strong field. |
| doi_str_mv | 10.1103/physreve.72.041918 |
| format | Article |
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| fulltext | fulltext |
| identifier | ISSN: 1539-3755 |
| ispartof | Physical review. E, Statistical, nonlinear, and soft matter physics, 2005-10, Vol.72 (4 Pt 1), p.041918-041918, Article 041918 |
| issn | 1539-3755 1550-2376 |
| language | eng |
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| source | MEDLINE; American Physical Society Journals |
| subjects | Anisotropy Biopolymers - chemistry Computer Simulation Elasticity Micromanipulation - methods Models, Chemical Models, Molecular Molecular Conformation Motion Stress, Mechanical |
| title | Elasticity of semiflexible polymers in two dimensions |
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