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Dynamics of the lipid-bilayer membrane taking a vesicle shape

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  • Youhei, Fujitani

Abstract

The lipid-bilayer membrane is treated as a two-dimensional viscous fluid with a restoring force against bending. We present a general theory of the dynamics of such a fluid, and as an application we calculate the damping coefficient of slow overdamped motion of the membrane which takes a spherical-vesicle shape in equilibrium. Discussions of the in-plane compression modulus and the membrane continuity in some recent theories are inappropriate for the lipid-bilayer membrane. We also find that membrane viscosity μ is important as compared to viscosities, μ̄ and μ̧, of the inner fluid and the outer fluid unless μ is much smaller than Fr and μ̧r0 (r0 being the vesicle radius).

Suggested Citation

  • Youhei, Fujitani, 1994. "Dynamics of the lipid-bilayer membrane taking a vesicle shape," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 203(2), pages 214-242.
    • Handle: RePEc:eee:phsmap:v:203:y:1994:i:2:p:214-242
    DOI: 10.1016/0378-4371(94)90153-8
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    References listed on IDEAS

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    1. Van Der Linden, E. & Bedeaux, D. & Borkovec, M., 1989. "Dynamics of microemulsion droplets," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 162(1), pages 99-110.
    2. Lipowsky, Reinhard, 1991. "Critical behavior of interacting manifolds," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 177(1), pages 182-188.
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