Active Colloids as Models, Materials, and Machines.

IF 7.6 2区 工程技术 Q1 CHEMISTRY, APPLIED Annual review of chemical and biomolecular engineering Pub Date : 2023-06-08 Epub Date: 2023-03-17 DOI:10.1146/annurev-chembioeng-101121-084939
Kyle J M Bishop, Sibani Lisa Biswal, Bhuvnesh Bharti
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Abstract

Active colloids use energy input at the particle level to propel persistent motion and direct dynamic assemblies. We consider three types of colloids animated by chemical reactions, time-varying magnetic fields, and electric currents. For each type, we review the basic propulsion mechanisms at the particle level and discuss their consequences for collective behaviors in particle ensembles. These microscopic systems provide useful experimental models of nonequilibrium many-body physics in which dissipative currents break time-reversal symmetry. Freed from the constraints of thermodynamic equilibrium, active colloids assemble to form materials that move, reconfigure, heal, and adapt. Colloidal machines based on engineered particles and their assemblies provide a basis for mobile robots with increasing levels of autonomy. This review provides a conceptual framework for understanding and applying active colloids to create material systems that mimic the functions of living matter. We highlight opportunities for chemical engineers to contribute to this growing field.

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作为模型、材料和机器的活性胶体。
活性胶体利用粒子级的能量输入来推动持续运动并引导动态组合。我们考虑了由化学反应、时变磁场和电流驱动的三种胶体。对于每种类型,我们都回顾了粒子层面的基本推进机制,并讨论了它们对粒子集合体集体行为的影响。这些微观系统为非平衡多体物理学提供了有用的实验模型,其中耗散电流打破了时间逆对称性。摆脱了热力学平衡的限制,活性胶体组装成可以移动、重组、愈合和适应的材料。基于工程粒子及其组装的胶体机器为自主水平不断提高的移动机器人提供了基础。本综述提供了一个概念框架,用于理解和应用活性胶体,以创建模仿生命物质功能的材料系统。我们强调了化学工程师为这一不断发展的领域做出贡献的机会。
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来源期刊
Annual review of chemical and biomolecular engineering
Annual review of chemical and biomolecular engineering CHEMISTRY, APPLIED-ENGINEERING, CHEMICAL
CiteScore
16.00
自引率
0.00%
发文量
25
期刊介绍: The Annual Review of Chemical and Biomolecular Engineering aims to provide a perspective on the broad field of chemical (and related) engineering. The journal draws from disciplines as diverse as biology, physics, and engineering, with development of chemical products and processes as the unifying theme.
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