Quincke Roller团簇的动力学和相互作用：从轨道和翻转到激发态
Dynamics and Interactions of Quincke Roller Clusters: from Orbits and Flips to Excited States
摘要：
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，但适合于实验室实验。虽然大多数实验模型由球体组成，如Janus粒子，但对不同形状的活性粒子的了解较少。特别是，这种活跃的胶体“分子”之间的相互作用在很大程度上是未知的。在这里，我们研究了活跃的胶体分子的运动和它们之间的相互作用。我们专注于由外部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，圆周和轨道运动。此外，哑铃之间的碰撞导致四聚体和六聚体的分级自组装，它们都形成旋转激发态。另一方面，三聚体表现出一种新型的翻转运动，导致轨迹让人想起蜂窝晶格。
英文摘要：
Active matter systems may be characterised by the conversion of energy into active motion, e.g. the self-propulsion of microorganisms. Artificial active colloids form models which exhibit essential properties of more complex biological systems but are amenable to laboratory experiments. While most experimental models consist of spheres, such as Janus particles, active particles of different shapes are less understood. In particular, interactions between such active colloidal "molecules" are largely unexplored. Here, we investigate the motion of active colloidal molecules and the interactions between them. We focus on self-assembled dumbbells and trimers powered by an external electric field. For dumbbells, we observe an activity-dependent behaviour of spinning, circular and orbital motion. 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 a novel type of flipping motion that leads to trajectories reminiscent of a honeycomb lattice.
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。
