ArticleProceedings of the National Academy of Sciences of the United States of America2019
Self-organized dynamics and the transition to turbulence of confined active nematics.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.
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Who cites it
40 citing papers in PubMed.
- Topological defects lead to energy transfer in active nematics.Nature communications · 2026Article
- Boundary-guided cell alignment drives mouse epiblast maturation.Nature physics · 2026Article
- Discontinuous transition to active nematic turbulence.Nature communications · 2025Article
- Active nematic pumps.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Orienting field effects on the flow of an active nematic liquid crystal in a channel.The European physical journal. E, Soft matter · 2025Article
- DNA photofluids show life-like motion.Nature materials · 2025Article
- Synthetic Active Liquid Crystals Powered by Acoustic Waves.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Vortex reversal is a precursor of confined bacterial turbulence.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Fabrication of microcompartments with controlled size and shape for encapsulating active matter.Frontiers in cell and developmental biology · 2025Article
- Yielding behaviour of active particles in bulk and in confinement.Nature physics · 2025Article
- Asymmetric fluctuations and self-folding of active interfaces.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Confinement promotes nematic alignment of spindle-shaped cells during Drosophila embryogenesis.Development (Cambridge, England) · 2024Article
- Design rules for controlling active topological defects.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Machine learning topological defects in confluent tissues.Biophysical reports · 2024Article
- Spontaneous flows and quantum analogies in heterogeneous active nematic films.Communications physics · 2024Article
- Article
- Kinesin and myosin motors compete to drive rich multiphase dynamics in programmable cytoskeletal composites.PNAS nexus · 2023Article
- Physically informed data-driven modeling of active nematics.Science advances · 2023Article
- Interplay of self-organization of microtubule asters and crosslinking protein condensates.PNAS nexus · 2023Article
- Steering self-organisation through confinement.Soft matter · 2023Review
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7 authors.
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No grant is acknowledged in the PubMed record.
Abstract
We study how confinement transforms the chaotic dynamics of bulk microtubule-based active nematics into regular spatiotemporal patterns. For weak confinements in disks, multiple continuously nucleating and annihilating topological defects self-organize into persistent circular flows of either handedness. Increasing confinement strength leads to the emergence of distinct dynamics, in which the slow periodic nucleation of topological defects at the boundary is superimposed onto a fast procession of a pair of defects. A defect pair migrates toward the confinement core over multiple rotation cycles, while the associated nematic director field evolves from a distinct double spiral toward a nearly circularly symmetric configuration. The collapse of the defect orbits is punctuated by another boundary-localized nucleation event, that sets up long-term doubly periodic dynamics. Comparing experimental data to a theoretical model of an active nematic reveals that theory captures the fast procession of a pair of [Formula: see text] defects, but not the slow spiral transformation nor the periodic nucleation of defect pairs. Theory also fails to predict the emergence of circular flows in the weak confinement regime. The developed confinement methods are generalized to more complex geometries, providing a robust microfluidic platform for rationally engineering 2D autonomous flows.
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