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    题名: Mechanical Properties of an Intrinsically Curved Semiflexible Biopolymer in Two Dimensions
    作者: Lin, Fang-ting;Zhou, Zicong
    日期: 2015-12-01
    上传时间: 2016-08-23 12:50:37 (UTC+8)
    出版者: 中華民國物理學會
    摘要: We compare the mechanical properties of two elastic models for a two-dimensional intrinsically
    curved semiflexible biopolymer. Model 1 allows a signed curvature and the model 2
    allows a positive definite curvature only. We show exactly that these two models have different
    ground states. We discretize both models and use the Monte Carlo method to simulate
    the models, and find that they have also different mechanical properties at finite temperature.
    Under the same force and with the same intrinsic curvature and bending rigidity, the
    extension of model 1 is smaller than that of model 2 at low force, but becomes larger at large
    force. Moreover, the extension of model 1 undergoes a discontinuous transition when the
    intrinsic curvature is sufficient large, but the extension of model 2 is always a smooth concave
    function of force, so that there is no phase transition. The difference between the two
    models is due to the fact that under external force model 2 disfavors looped configurations
    and favors the configurations with moderate extensions.
    關聯: CHINESE JOURNAL OF PHYSICS 53(7), pp.1-15
    DOI: 10.6122/CJP.20150928
    显示于类别:[物理學系暨研究所] 期刊論文

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