J. Phys. II France
Volume 5, Numéro 1, January 1995
Page(s) 5 - 9
DOI: 10.1051/jp2:1995109
J. Phys. II France 5 (1995) 5-9

Diffusion Constant of a Polymer Chain in Biomembranes

Shigeyuki Komura1 and Kazuhiko Seki2

1  Department of Physics, Faculty of Science, Kyoto University, Kyoto 606, Japan
2  Theoretical Chemistry Laboratory, National Institute of Materials and Chemical Research, Tusukuba 305, Japan

(Received 19 September 1994, received in final form 15 November 1994, accepted 22 November 1994)

The diffusion constant of a polymer chain moving in a biomembrane is calculated within a two-dimensional hydrodynamical model coupled to an ambient fluid through the momentum dissipation mechanism. The obtained diffusion constant depends on the polymer size logarithmically and algebraically for the weak and strong coupling limits, respectively.

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