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arXiv 1102.4508physics.bio-phcond-mat.softcond-mat.stat-mech
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红细胞膜波动的有效温度

Effective Temperature of Red Blood Cell Membrane Fluctuations

Eyal Ben-Isaac, YongKeun Park, Gabriel Popescu, Frank L. H. Brown, Nir S. Gov, Yair Shokef

摘要:

生物驱动的非平衡波动通常以其非高斯性或“有效温度”为特征,有效温度取决于频率并高于环境温度。我们解决这两个措施理论上通过检查一个随机踢“粒子”,与可变数量的踢“马达”,并显示这两个指标的非平衡行为可以矛盾。我们的研究结果进行了比较,与新的实验红细胞膜的形状波动,并展示了如何在这个系统中的电机的物理性质,可以揭示使用这些全球性的措施的非平衡。

英文摘要:

Biologically driven non-equilibrium fluctuations are often characterized by their non-Gaussianity or by an "effective temperature", which is frequency dependent and higher than the ambient temperature. We address these two measures theoretically by examining a randomly kicked "particle", with a variable number of kicking "motors", and show how these two indicators of non-equilibrium behavior can contradict. Our results are compared with new experiments on shape fluctuations of red-blood cell membranes, and demonstrate how the physical nature of the motors in this system can be revealed using these global measures of non-equilibrium.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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