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题名: Polygonal shape transformation of a circular biconcave vesicle induced by osmotic pressure
作者: Naito, H ;  Okuda, M ;  Zhongcan, OY
刊名: PHYSICAL REVIEW E
出版日期: 1996
卷号: 54, 期号:3, 页码:2816-2826
关键词: RED BLOOD-CELL ;  AXISYMMETRICAL VESICLES ;  PHOSPHOLIPID-VESICLES ;  CURVATURE ELASTICITY ;  BILAYER VESICLES ;  FLUID MEMBRANES ;  BENDING ENERGY ;  ERYTHROCYTE ;  TRANSITIONS ;  INSTABILITY
学科分类: Physics
通讯作者: Naito, H , UNIV OSAKA PREFECTURE,DEPT PHYS & ELECT,GAKUEN CHO,SAKAI,OSAKA 593,JAPAN.
部门归属: ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
英文摘要: Polygonal shape transformation processes observed in liposomes [H. Hotani, J. Mol. Biol. 178, 113 (1984)] have been analyzed on the basis of the HeLfrich spontaneous curvature model. First. a mathematical solution for the biconcave axisymmetric vesicles [H. Naito, M. Okuda, and Z. Ou-Yang, Phys. Rev. E 47, 2304 (1993)] is derived, and then the second variation of the shape energy of the slightly deformed vesicles from the biconcave shape is calculated. After the minimization of the shape energy, it is found that the biconcave vesicle is transformed into elliptical, triangular, square, pentagonal, or other polygonal shapes above the threshold osmotic pressure difference, At a constant value of Delta V/V-0, the osmotic pressure is found to be a monotonic increasing function of lit, except for m=2, where V-0 is the initial volume of the biconcave vesicle, Delta V is the change in the volume of the deformed vesicle, and nr denotes mth polygonal deformation. It is shown that the experimental results of the polygonal shape transformation in liposomes can be well explained by the present theoretical predictions.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:A1996VK26500087
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12591
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Naito, H,Okuda, M,Zhongcan, OY. Polygonal shape transformation of a circular biconcave vesicle induced by osmotic pressure[J]. PHYSICAL REVIEW E,1996,54(3):2816-2826.
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