ArticleScience advances2022
Arrested-motility states in populations of shape-anisotropic active Janus particles.
Article in Science advances, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed.
- Cooperation in binary mixtures of active colloids.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Anisotropy-Stabilized Propulsion and Cycloidal Cargo Transport in Driven Magnetic Platelets.Nano letters · 2026Article
- Article
- Swarm Autonomy: From Agent Functionalization to Machine Intelligence.Advanced materials (Deerfield Beach, Fla.) · 2025Review
- Microrobotic Swarms for Cancer Therapy.Research (Washington, D.C.) · 2025Review
- Designing highly efficient interlocking interactions in anisotropic active particles.Nature communications · 2024Article
- Chiral active particles are sensitive reporters to environmental geometry.Nature communications · 2024Article
- Dynamics and interactions of Quincke roller clusters: From orbits and flips to excited states.Science advances · 2023Article
- Electrokinetic Active Particles for Motion-Based Biomolecule Detection.Nano letters · 2023Article
Corrections and comments
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Authors and funding
5 authors.
Funding
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Abstract
The emergence of large-scale collective phenomena from simple interactions between individual units is a hallmark of active matter systems. Active colloids with alignment-dominated interparticle interactions tend to develop orientational order and form motile coherent states, such as flocks and swarms. Alternatively, a combination of self-propulsion and excluded-volume interactions results in self-trapping and active phase separation into dense clusters. Here, we reveal unconventional arrested-motility states in ensembles of active discoidal particles powered by induced-charge electrophoresis. Combining experiments and computational modeling, we demonstrate that the shape asymmetry of the particles promotes the hydrodynamically assisted formation of active particles' bound states in a certain range of excitation parameters, ultimately leading to a spontaneous collective state with arrested motility. Unlike the jammed clusters obtained through self-trapping, the arrested-motility phase remains sparse, dynamic, and reconfigurable. The demonstrated mechanism of phase separation seeded by bound state formation in ensembles of oblate active particles is generic and should be applicable to other active colloidal systems.
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