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THEORY OF HELICAL STRUCTURES OF TILTED CHIRAL LIPID BILAYERS
ZHONGCAN, OY; LIU, JX; ZHONGCAN, OY , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING,PEOPLES R CHINA.
1991
发表期刊PHYSICAL REVIEW A
ISSN1050-2947
卷号43期号:12页码:6826-6836
摘要Analogous to the theory of cholesteric liquid crystal, a theory for tilted chiral lipid bilayers (TCLB) [briefly reported in Phys. Rev. Lett. 65, 1679 (1990)] is developed. The tilt equation and the surface-shape-equilibrium equation have been derived. Application of the theory shows that on a cylindrical surface, the field of tilt directions of TCLB molecules forms a right-handed helix with a 45-degrees gradient angle for k2 > 0 or a left-handed helix with -45-degrees gradient angle for k2 < 0, where k2 is the chiral curvature modulus of the cholesteric liquid crystal. In addition, there exists another type of helical structure that looks like twisted strips or helicoids. It is also shown that on a spherical surface, the tilt field has at least two singular points. Based on these results, the succession of transitions from a vesicular dispersion to a phase involving helical structures and then to tubes observed in several laboratories can be reasonably explained. The general formula that explains the aggregation of narrow and prolate ribbon structures is derived. By including more terms of elasticity free energy into the theory, the size of the helical structure is obtained and is shown to agree with experimental observations.
部门归属ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA; ACAD SINICA,INST THEORET PHYS,BEIJING 100080,PEOPLES R CHINA
关键词Membranes Superstructures Lecithin Tubules
学科领域Physics
收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/11303
专题理论物理所1978-2010年知识产出
通讯作者ZHONGCAN, OY , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING,PEOPLES R CHINA.
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ZHONGCAN, OY,LIU, JX,ZHONGCAN, OY , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING,PEOPLES R CHINA.. THEORY OF HELICAL STRUCTURES OF TILTED CHIRAL LIPID BILAYERS[J]. PHYSICAL REVIEW A,1991,43(12):6826-6836.
APA ZHONGCAN, OY,LIU, JX,&ZHONGCAN, OY , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING,PEOPLES R CHINA..(1991).THEORY OF HELICAL STRUCTURES OF TILTED CHIRAL LIPID BILAYERS.PHYSICAL REVIEW A,43(12),6826-6836.
MLA ZHONGCAN, OY,et al."THEORY OF HELICAL STRUCTURES OF TILTED CHIRAL LIPID BILAYERS".PHYSICAL REVIEW A 43.12(1991):6826-6836.
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