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arXiv 0810.1168cond-mat.stat-mechq-bio.SC
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分子马达的效率

The efficiency of the molecular motors

Yunxin Zhang

摘要:

分子马达在布朗运动主导的环境中工作时将化学能转化为机械功。本文的目的是探讨分子马达与其周围环境之间的能量流动,特别是其效率。从Fokker-Planck方程出发,无论是考虑$N$还是考虑无限化学态,我们都发现分子马达的能量效率,无论是Stokes效率还是通常的热力学效率,都严格限制在1以内,这是因为在过阻尼环境中以及在化学反应过程中能量都在耗散。

英文摘要:

Molecular motors convert chemical energy into mechanical work while operating in an environment dominated by Brownian motion. The aim of this paper is to explore the flow of energy between the molecular motors and its surroundings, in particular, its efficiency. Based on the Fokker-Planck equation with either $N$ or infinite chemical states, we find that the energy efficiency of the molecular motors, whether the Stokes efficiency or the usual thermodynamic efficiency, is strictly bounded by 1, because of the dissipation of the energy in both the overdamped surroundings and in the process of the chemical reaction.

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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