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    题名: Effect of a force-free end on the mechanical property of a biopolymer —A path integral approach
    作者: Zhou, Zicong;Joós, Béla
    关键词: statistical physics, path integral, biopolymers, mechanical property
    日期: 2016-06-25
    上传时间: 2018-03-13 12:10:18 (UTC+8)
    出版者: Chinese Physical Society and IOP Publishing Ltd
    摘要: We study the effect of a force-free end on the mechanical property of a stretched biopolymer. The system can be divided into two parts. The first part consists of the segment counted from the fixed point (i.e., the origin) to the forced point in the biopolymer, with arclength Lf . The second part consists of the segment counted from the forced point to the
    force-free end with arclength DL. We apply the path integral technique to find the relationship between these two parts. At finite temperature and without any constraint at the end, we show exactly that if we focus on the quantities related to the first part, then we can ignore the second part completely. Monte Carlo simulation confirms this conclusion. In contrast,
    the effect for the quantities related to the second part is dependent on what we want to observe. A force-free end has little effect on the relative extension, but it affects seriously the value of the end-to-end distance if DL is comparable to Lf .
    關聯: Chinese Physics B 25(8), 088701(6 pages)
    DOI: 10.1088/1674-1056/25/8/088701
    显示于类别:[物理學系暨研究所] 期刊論文

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