THEORY OF HELICAL STRUCTURES OF TILTED CHIRAL LIPID BILAYERS

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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
发表期刊	PHYSICAL REVIEW A
关键词	Membranes Superstructures Lecithin Tubules
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.
	1991
ISSN	1050-2947
卷号	43 期号:12 页码:6826-6836
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	理论物理所科研产出_SCI论文
通讯作者	ZHONGCAN, OY , CHINESE CTR ADV SCI & TECHNOL,WORLD LAB,POB 8730,BEIJING,PEOPLES R CHINA.
推荐引用方式 GB/T 7714	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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