Theoretical and numerical investigations on shapes of planar lipid monolayer domains

Details Theoretical and numerical investigations on shapes of planar lipid monolayer domains Theoretical and numerical investigations on shapes of planar lipid monolayer domains

2008-10-11

arxiv.org/abs/0810.2000v2

J. Chem. Phys. 130, 045103 (2009)

Physics

Condensed Matter

Soft Condensed Matter

16 pages with 14 figures, revised version accepted by J. Chem. Phys

Scientific paper

10.1063/1.3063119

Shapes of planar lipid monolayer domains at the air-water interface are theoretically and numerically investigated by minimizing the formation energy of the domains which consist of the surface energy, line tension energy, and dipole electrostatic energy. The shape equation which describes boundary curves of the domains at equilibrium state is derived from the first order variation of the formation energy. A relaxation method is proposed to find the numerical solutions of the shape equation. The theoretical and numerical results are in good agreement with previous experimental observation. Some new shapes not observed in previous experiments are also obtained, which awaits experimental confirmation in the future.

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