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arXiv 1104.5607cond-mat.stat-mech
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涨落定理对自推进粒子的适用性

Validity of Fluctuation Theorem on Self-Propelling Particles

R. Suzuki, H. R. Jiang, M. Sano

摘要:

涨落理论在纳米到亚微米尺度系统中的实验应用在过去几年中受到了广泛的关注。尽管如此,由于实验困难,很少在自推进物体上使用FT。在本文中,我们应用FT的双峰,这是由不对称的涂层自推进胶体颗粒(Janus粒子),它经历了一个连续的旋转,通过施加AC电场。我们发现,FT是有效的旋转自推进胶体通过评估估计的旋转扭矩,以符合另一种形式的扭矩估计,它认为是旋转速度的偶极子和一个简单的斯托克斯方程。

英文摘要:

The experimental application of fluctuation theorem (FT) on nanometer to submicrometer sized systems has received thorough attention in the past several years. Nonetheless, the employment of FT on self-propelling objects has seldom been performed due to experimental difficulties. In this paper, we applied FT on a doublet that is comprised of asymmetrically coated self-propelling colloidal particles (Janus particles), which experiences a continuous rotation by applying AC electric field. We found that FT is valid for rotating self-propelling colloids by evaluating the estimated rotary torque to coincide with another form of torque estimation, which considers the rotation speed of the doublet and a simple Stokes equation.

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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