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    題名: Excluded volume reduced mechanical stability for an intrinsically curved biopolymer
    作者: Zhou(周子聰), Zicong;Joós, Béla
    關鍵詞: Excluded volume interaction;Intrinsic curvature;Phase transition;Semiflexible;biopolymer;Mechanical property
    日期: 2020-04
    上傳時間: 2020-06-01 12:12:53 (UTC+8)
    出版者: Elsevier B.V.
    摘要: We find that the excluded volume interaction (EVI) can accelerate an abrupt transition in extension for an intrinsically curved two-dimensional semiflexible biopolymer. It makes the transition much sharper, reduces the critical force remarkably, and the larger the persistent length or the intrinsic curvature, the larger the reduction in critical force. The transition is caused by a collective change in bending angles associated with removing cusps owing to thermal fluctuation. Our results reveal that EVI can excite a cooperative behavior, straighten more bonds simultaneously so cause a sharper transition. The transition is dominated by the mechanical force because the specific heat does not divergence. Our findings suggest that an intrinsically curved biopolymer can act as a switch or sensor in some biological processes.
    關聯: Chinese Journal of Physics 64, p.219–226
    DOI: 10.1016/j.cjph.2019.12.007
    顯示於類別:[物理學系暨研究所] 期刊論文

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