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- Title
Equilibrium Shape Equation and Geometrically Permissible Condition for Two-Component Lipid Bilayer Vesicles.
- Authors
Ni Dong; Yin Yajun; Shi Huiji
- Abstract
Equilibrium shapes of vesicles composed of a mixture of partially miscible amphiphiles are investigated. To take into account the influences of the composition, a simple phenomenological coupling between the co mposition and the curvatures, including the mean curvature and the Gauss curvature of the membrane surface, is suggested. By minimizing the potential functional, the general shape equation is obtained and solved analytically for vesicles with simple shapes. Besides, the geometrical constraint equation and geometrically permissible condition for the two-component lipid vesicles are put forward. The influences of physical parameters on the geometrically permissible phase diagrams are predicted. The close relations between the predictions and existing experimental phenomena published recently are shown.
- Subjects
EQUILIBRIUM; COATED vesicles; CURVATURE; LIPIDS; PHENOMENOLOGICAL theory (Physics)
- Publication
Journal of Biological Physics, 2005, Vol 31, Issue 2, p135
- ISSN
0092-0606
- Publication type
Article
- DOI
10.1007/s10867-005-4307-1