Maximum-entropy calculation of the end-to-end distance distribution of force-stretched chains
文献类型：期刊论文
| 作者 | Ou-Yang, ZC ; Dai, LR; Liu, F; Dai, LR , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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| 刊名 | JOURNAL OF CHEMICAL PHYSICS
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| 出版日期 | 2003 |
| 卷号 | 119期号:15页码:8124-8132 |
| 关键词 | Stranded-dna-molecules Polymer-molecules Thermodynamics Moments |
| ISSN号 | 0021-9606 |
| 英文摘要 | Using the maximum-entropy method, we calculate the end-to-end distance distribution of the force-stretched chain from the moments of the distribution, which can be obtained from the extension-force curves measured in single-molecule experiments. If one knows the force expansion of the extension through the (n-1)th power of a force, that is enough to calculate the n moments of the distribution. We examine the method with three force-stretched chain models: the Gaussian chain, free-joined chain, and self-avoiding chain on a two-dimensional lattice. The method reconstructs all distributions precisely. We also apply the method to force-stretched complex chain molecules: the hairpin and secondary structure conformations. We find that the distributions of homogeneous chains of the two conformational classes are quite different: there are two independent peaks in the hairpin distribution, while only one peak is observed in the distribution of secondary structure conformations. Our discussion shows that the end-to-end distance distribution, instead of extension-force curves, can reveal more important physical information. (C) 2003 American Institute of Physics. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000185703100057 |
| 公开日期 | 2012-08-29 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/13204]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Dai, LR , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Ou-Yang, ZC,Dai, LR,Liu, F,et al. Maximum-entropy calculation of the end-to-end distance distribution of force-stretched chains[J]. JOURNAL OF CHEMICAL PHYSICS,2003,119(15):8124-8132. |
| APA | Ou-Yang, ZC,Dai, LR,Liu, F,&Dai, LR , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2003).Maximum-entropy calculation of the end-to-end distance distribution of force-stretched chains.JOURNAL OF CHEMICAL PHYSICS,119(15),8124-8132. |
| MLA | Ou-Yang, ZC,et al."Maximum-entropy calculation of the end-to-end distance distribution of force-stretched chains".JOURNAL OF CHEMICAL PHYSICS 119.15(2003):8124-8132. |
入库方式： OAI收割
来源：理论物理研究所
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