合成机械化学分子游泳剂
Synthetic Mechanochemical Molecular Swimmer
摘要：
提出了一种基于机械化学推进机制的分子游泳器的最小设计。当分子的特定部分通过涉及离子组分的催化化学反应暂时获得净电荷时，静电致动诱导构象变化。机械化学循环被设计成使得所产生的构象变化足以实现低雷诺数推进。最近开发的框架内的随机游泳者考虑到在分子尺度上的嘈杂环境中的系统进行了分析。根据酶促反应中的Michaelis-Menten规则，发现该装置的游泳速度取决于燃料分子的浓度。
英文摘要：
A minimal design for a molecular swimmer is proposed that is a based on a mechanochemical propulsion mechanism. Conformational changes are induced by electrostatic actuation when specific parts of the molecule temporarily acquire net charges through catalyzed chemical reactions involving ionic components. The mechanochemical cycle is designed such that the resulting conformational changes would be sufficient for achieving low Reynolds number propulsion. The system is analyzed within the recently developed framework of stochastic swimmers to take account of the noisy environment at the molecular scale. The swimming velocity of the device is found to depend on the concentration of the fuel molecule according to the Michaelis-Menten rule in enzymatic reactions.
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