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Entropic pressure between fluctuating membranes in multilayer systems
Li L(李龙); Wang XH(王小环); Shao YF(邵颖峰); Li W(李伟); Song F(宋凡)
Source PublicationSCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
2018-12-01
Volume61Issue:12Pages:128711
ISSN1674-7348
Abstract

Gaining insights into the fluctuation-induced entropic pressure between membranes that mediates cell adhesion and signal transduction is of great significance for understanding numerous physiological processes driven by intercellular communication. Although much effort has been directed toward investigating this entropic pressure, there still exists tremendous controversy regarding its quantitative nature, which is of primary interest in biophysics, since Freund challenged the Helfrich's well-accepted results on the distance dependence. In this paper, we have investigated the entropic pressure between fluctuating membranes in multilayer systems under pressure and tension through theoretical analysis and Monte Carlo simulations. We find that the scaling relations associated with entropic pressure depend strongly on the magnitude of the external pressures in both bending rigidityand surface tension-dominated regimes. In particular, both theoretical and computational results consistently demonstrate that, in agreement with Helfrich, the entropic pressure p decays with inter-membrane separations c as p similar to c (-3) for the tensionless multilayer systems confined by small external pressures. However, our results suggest that the entropic pressure law follows to be p similar to c (-1) and p similar to c (-3), respectively, in the limit of large and small thermal wavelengths for bending fluctuations of the membranes in a tension-independent manner for the case of large external pressures.

Keywordentropic pressure fluctuating membranes statistical mechanics theory Monte Carlo simulation cell adhesion
DOI10.1007/s11433-018-9264-x
URL查看原文
Indexed BySCI ; EI ; CSCD
Language英语
WOS IDWOS:000441828400001
WOS KeywordFLUID MEMBRANES ; ANCHORED RECEPTORS ; STERIC INTERACTION ; FORCES ; BINDING ; ADHESION ; LIGANDS
WOS Research AreaPhysics, Multidisciplinary
WOS SubjectPhysics
Funding OrganizationNational Natural Science Foundation of China [11472285, 11572326] ; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040102] ; National Key Research and Development Program of China [2016YFA0501601]
CSCD IDCSCD:6384410
Classification二类/Q1
Ranking1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77867
Collection非线性力学国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China
2.Chinese Acad Sci, Inst Mech, Beijing Key Lab Engn Construct & Mechanobiol, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
4.North China Inst Aerosp Engn, Sch Mech & Elect Engn, Langfang 065000, Peoples R China
Recommended Citation
GB/T 7714
Li L,Wang XH,Shao YF,et al. Entropic pressure between fluctuating membranes in multilayer systems[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2018,61(12):128711.
APA Li L,Wang XH,Shao YF,Li W,&Song F.(2018).Entropic pressure between fluctuating membranes in multilayer systems.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,61(12),128711.
MLA Li L,et al."Entropic pressure between fluctuating membranes in multilayer systems".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 61.12(2018):128711.
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