Dynamics and interactions of Quincke roller clusters: From orbits and flips to excited states.
Dynamics and interactions of Quincke roller clusters: From orbits and flips to excited states.
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Quincke辊簇的动力和相互作用：从轨道和翻转到激发状态。
DOI：
10.1126/sciadv.adf5144
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发表时间：
2023-05-19
期刊：
影响因子：
13.6
通讯作者：
Royall, C. Patrick
中科院分区：
文献类型：
--
作者：
Mauleon-Amieva, Abraham;Allen, Michael P.;Liverpool, Tanniemola B.;Royall, C. Patrick
活性物质系统的特征在于将能量转化为主动运动，例如，微生物的自我推进人工活性胶体形成的模型表现出更复杂的生物系统的基本特性，但适合实验室实验。虽然大多数实验模型由球体组成，但对不同形状的活性颗粒的了解较少。此外，这些各向异性的活性胶体之间的相互作用甚至更少探索。在这里，我们研究了活跃的胶体团簇的运动和它们之间的相互作用。我们专注于由外部直流电场供电的自组装哑铃和三聚体。对于哑铃，我们观察到一个活动依赖的行为旋转，圆形和轨道运动。此外，哑铃之间的碰撞导致四聚体和六聚体的分级自组装，两者都形成旋转激发态。另一方面，三聚体表现出翻转运动，导致轨迹让人想起蜂窝晶格。从轨道和翻转到电流体动力学耦合和活性胶体团簇中的超胶体化学。
Active matter systems may be characterized by the conversion of energy into active motion, e.g., the self-propulsion of microorganisms. Artificial active colloids form models that exhibit essential properties of more complex biological systems but are amenable to laboratory experiments. While most experimental models consist of spheres, active particles of different shapes are less understood. Furthermore, interactions between these anisotropic active colloids are even less explored. Here, we investigate the motion of active colloidal clusters and the interactions between them. We focus on self-assembled dumbbells and trimers powered by an external dc electric field. For dumbbells, we observe an activity-dependent behavior of spinning, circular, and orbital motions. Moreover, collisions between dumbbells lead to the hierarchical self-assembly of tetramers and hexamers, both of which form rotational excited states. On the other hand, trimers exhibit flipping motion that leads to trajectories reminiscent of a honeycomb lattice. From orbits and flips to electrohydrodynamical coupling and supracolloidal chemistry in active colloidal clusters.
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DOI：
10.1073/pnas.1710188114
发表时间：
2017-12-05
影响因子：
11.1
作者：
Kokot G;Das S;Winkler RG;Gompper G;Aranson IS;Snezhko A
通讯作者：
Snezhko A
影响因子：
64.8
作者：
Dreyfus, R;Baudry, J;Bibette, J
通讯作者：
Bibette, J
影响因子：
2.4
作者：
Kaiser, Andreas;Popowa, Katarina;Loewen, Hartmut
通讯作者：
Loewen, Hartmut
影响因子：
8.6
作者：
Kuemmel, Felix;ten Hagen, Borge;Bechinger, Clemens
通讯作者：
Bechinger, Clemens
影响因子：
2.4
作者：
Kraft, Daniela J.;Wittkowski, Raphael;Loewen, Hartmut
通讯作者：
Loewen, Hartmut