Chemically Propelled Motors Navigate Chemical Patterns,Advanced Science

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Chemically Propelled Motors Navigate Chemical Patterns
Advanced Science ( IF 14.3 ) Pub Date : 2018-07-11 , DOI: 10.1002/advs.201800028
Jiang-Xing Chen ₁ , Yu-Guo Chen ₁ , Raymond Kapral ₂

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Very small synthetic motors that use chemical reactions to drive their motion are being studied widely because of their potential applications, which often involve active transport and dynamics on nanoscales. Like biological molecular machines, they must be able to perform their tasks in complex, highly fluctuating environments that can form chemical patterns with diverse structures. Motors in such systems can actively assemble into dynamic clusters and other unique nonequilibrium states. It is shown how chemical patterns with small characteristic dimensions may be utilized to suppress rotational Brownian motions of motors and guide them to move along prescribed paths, properties that can be exploited in applications. In systems with larger pattern length scales, domains can serve as catch basins for motors through chemotactic effects. The resulting collective motor dynamics in such confining domains can be used to explore new aspects of active particle collective dynamics or promote specific types of active self‐assembly. More generally, when chemically self‐propelled motors operate in far‐from‐equilibrium active chemical media the variety of possible phenomena and the scope of their potential applications are substantially increased.

中文翻译：

化学推进电机驾驭化学模式

利用化学反应来驱动运动的小型合成发动机因其潜在应用而受到广泛研究，这些应用通常涉及纳米尺度的主动运输和动力学。像生物分子机器一样，它们必须能够在复杂、高度波动的环境中执行任务，这些环境可以形成具有不同结构的化学模式。此类系统中的电机可以主动组装成动态集群和其他独特的非平衡状态。展示了如何利用具有小特征尺寸的化学图案来抑制电机的旋转布朗运动并引导它们沿着规定的路径移动，这些特性可以在应用中利用。在具有较大图案长度尺度的系统中，域可以通过趋化效应充当马达的集水池。在此类限制域中产生的集体运动动力学可用于探索活性粒子集体动力学的新方面或促进特定类型的主动自组装。更一般地说，当化学自驱动电机在远离平衡的活性化学介质中运行时，可能出现的现象及其潜在应用范围都会大大增加。

更新日期：2018-07-11

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