摘要翻译:
细胞的力学受到在细胞骨架中产生作用力的分子马达的强烈影响。我们建立了一个由分子马达施加瞬态收缩应力驱动的细胞骨架网络脱离平衡的模型。利用这个模型,我们展示了运动活动是如何显著增加网络的体积弹性模量的。我们还展示了运动结合动力学如何自然地导致增强的低频应力波动,从而导致弹性网络中的非平衡扩散运动,如最近的\emph{体外}和\emph{体内}实验所见。
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英文标题:
《Non-equilibrium mechanics and dynamics of motor activated gels》
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作者:
Fred C. MacKintosh and Alex J. Levine
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最新提交年份:
2007
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分类信息:
一级分类:Physics        物理学
二级分类:Soft Condensed Matter        软凝聚态物质
分类描述:Membranes, polymers, liquid crystals, glasses, colloids, granular matter
膜,聚合物,液晶,玻璃,胶体,颗粒物质
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一级分类:Physics        物理学
二级分类:Statistical Mechanics        统计力学
分类描述:Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变,热力学,场论,非平衡现象,重整化群和标度,可积模型,湍流
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英文摘要:
  The mechanics of cells is strongly affected by molecular motors that generate forces in the cellular cytoskeleton. We develop a model for cytoskeletal networks driven out of equilibrium by molecular motors exerting transient contractile stresses. Using this model we show how motor activity can dramatically increase the network's bulk elastic moduli. We also show how motor binding kinetics naturally leads to enhanced low-frequency stress fluctuations that result in non-equilibrium diffusive motion within an elastic network, as seen in recent \emph{in vitro} and \emph{in vivo} experiments. 
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PDF链接:
https://arxiv.org/pdf/704.3794