Elasticity of semiflexible polymers in two dimensions.
Phys Rev E Stat Nonlin Soft Matter Phys
; 72(4 Pt 1): 041918, 2005 Oct.
Article
en En
| MEDLINE
| ID: mdl-16383431
ABSTRACT
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.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Biopolímeros
/
Modelos Moleculares
/
Micromanipulación
/
Modelos Químicos
Tipo de estudio:
Prognostic_studies
Idioma:
En
Revista:
Phys Rev E Stat Nonlin Soft Matter Phys
Asunto de la revista:
BIOFISICA
/
FISIOLOGIA
Año:
2005
Tipo del documento:
Article
País de afiliación:
Estados Unidos