Entropic force between biomembranes
文献类型：期刊论文
| 作者 | Li L(李龙) ; Song F(宋凡)
|
| 刊名 | ACTA MECHANICA SINICA
 |
| 出版日期 | 2016 |
| 卷号 | 32期号:5页码:970-975 |
| 通讯作者邮箱 | songf@lnm.imech.ac.cn |
| 关键词 | Undulation force Flexible membrane Entropic force Confined fluctuations |
| ISSN号 | 0567-7718 |
| 产权排序 | [Li, Long; Song, Fan] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China; [Li, Long; Song, Fan] Chinese Acad Sci, Inst Mech, Beijing Key Lab Engn Construct & Mechanobiol, Beijing 100190, Peoples R China; [Li, Long; Song, Fan] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| 通讯作者 | Song, F (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China. ; Song, F (reprint author), Chinese Acad Sci, Inst Mech, Beijing Key Lab Engn Construct & Mechanobiol, Beijing 100190, Peoples R China. ; Song, F (reprint author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China. |
| 中文摘要 | Undulation force, an entropic force, stems from thermally excited fluctuations, and plays a key role in the essential interactions between neighboring surfaces of objects. Although the characteristics of the undulation force have been widely studied theoretically and experimentally, the distance dependence of the force, which constitutes its most fundamental characteristic, remains poorly understood. In this paper, first, we obtain a novel expression for the undulation force by employing elasticity and statistical mechanics and prove it to be in good agreement with existing experimental results. Second, we clearly demonstrate that the two representative forms of the undulation force proposed by Helfrich and Freund were respectively the upper and lower bounds of the present expression when the separation between membranes is sufficiently small, which was intrinsically different from the existing results where Helfrich's and Freund's forms of the undulation force were only suitable for the intermediate and small separations. The investigations show that only in a sufficiently small separation does Helfrich's result stand for the undulation force with a large wave number and Freund's result express the force with a small wave number. Finally, a critical acting distance of the undulation force, beyond which the entropic force will rapidly decay approaching zero, is presented. |
| 分类号 | 二类 |
| 类目[WOS] | Engineering, Mechanical ; Mechanics |
| 研究领域[WOS] | Engineering ; Mechanics |
| 关键词[WOS] | Undulation force ; Flexible membrane ; Entropic force ; Confined fluctuations |
| 收录类别 | SCI ; EI ; CSCD |
| 原文出处 | http://dx.doi.org/10.1007/s10409-016-0588-9 |
| 语种 | 英语 |
| WOS记录号 | WOS:000386498900017 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/59694]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Li L,Song F. Entropic force between biomembranes[J]. ACTA MECHANICA SINICA,2016,32(5):970-975. |
| APA | 李龙,&宋凡.(2016).Entropic force between biomembranes.ACTA MECHANICA SINICA,32(5),970-975. |
| MLA | 李龙,et al."Entropic force between biomembranes".ACTA MECHANICA SINICA 32.5(2016):970-975. |
入库方式： OAI收割
来源：力学研究所
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