ArticleProceedings of the National Academy of Sciences of the United States of America2021
Activity waves and freestanding vortices in populations of subcritical Quincke rollers.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed, 59 citations in OpenAlex.
- Observation of a backward sliding motion for rollers on surfaces in viscoelastic fluid.Nature communications · 2026Article
- Interactions Between Active Matters and Endogenous Fields.Advanced materials (Deerfield Beach, Fla.) · 2025Review
- Relevant, Hidden, and Frustrated Information in High-Dimensional Analyses of Complex Dynamical Systems with Internal Noise.Journal of chemical theory and computation · 2025Article
- Integer topological defects offer a methodology to quantify and classify active cell monolayers.Nature communications · 2025Article
- Transient colloidal crystals fueled by electrochemical reaction products.Nature communications · 2025Article
- The 2025 motile active matter roadmap.Journal of physics. Condensed matter : an Institute of Physics journal · 2025Review
- Classification and spatiotemporal correlation of dominant fluctuations in complex dynamical systems.PNAS nexus · 2025Article
- Microrobotic Swarms for Cancer Therapy.Research (Washington, D.C.) · 2025Review
- Swarm Autonomy: From Agent Functionalization to Machine Intelligence.Advanced materials (Deerfield Beach, Fla.) · 2025Review
- Layer-by-layer unsupervised clustering of statistically relevant fluctuations in noisy time-series data of complex dynamical systems.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Anisotropic run-and-tumble-turn dynamics.Soft matter · 2024Article
- Spontaneous shock waves in pulse-stimulated flocks of Quincke rollers.Nature communications · 2023Article
- Multi-scale organization in communicating active matter.Nature communications · 2022Article
- Unraveling the physiochemical nature of colloidal motion waves among silver colloids.Science advances · 2022Article
Corrections and comments
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Authors and funding
6 authors at 3 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Virtually all of the many active matter systems studied so far are made of units (biofilaments, cells, colloidal particles, robots, animals, etc.) that move even when they are alone or isolated. Their collective properties continue to fascinate, and we now understand better how they are unique to the bulk transduction of energy into work. Here we demonstrate that systems in which isolated but potentially active particles do not move can exhibit specific and remarkable collective properties. Combining experiments, theory, and numerical simulations, we show that such subcritical active matter can be realized with Quincke rollers, that is, dielectric colloidal particles immersed in a conducting fluid subjected to a vertical DC electric field. Working below the threshold field value marking the onset of motion for a single colloid, we find fast activity waves, reminiscent of excitable systems, and stable, arbitrarily large self-standing vortices made of thousands of particles moving at the same speed. Our theoretical model accounts for these phenomena and shows how they can arise in the absence of confining boundaries and individual chirality. We argue that our findings imply that a faithful description of the collective properties of Quincke rollers need to consider the fluid surrounding particles.
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