ArticleProceedings of the National Academy of Sciences of the United States of America2024
Design rules for controlling active topological defects.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.
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Who cites it
10 citing papers in PubMed.
- Spatial Activity Patterning and Topological Defect Transport in Acoustically Energized Active Liquid Crystals.Small (Weinheim an der Bergstrasse, Germany) · 2026Article
- Boundary geometry controls a topological defect transition that determines lumen nucleation in embryonic development.Nature materials · 2026Article
- Article
- Light-induced assembly and repeatable actuation in CaNature communications · 2026Article
- Topological signatures of collective dynamics and turbulent-like energy cascades in apolar active granular matter.Proceedings of the National Academy of Sciences of the United States of America · 2026Article
- Active nematic pumps.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Synthetic Active Liquid Crystals Powered by Acoustic Waves.Advanced materials (Deerfield Beach, Fla.) · 2025Article
- Learning protocols for the fast and efficient control of active matter.Nature communications · 2024Article
- Spontaneous flows and quantum analogies in heterogeneous active nematic films.Communications physics · 2024Article
- Defect self-propulsion in active nematic films with spatially varying activity.Royal Society open science · 2023Article
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Authors and funding
4 authors.
Funding
Abstract
Topological defects play a central role in the physics of many materials, including magnets, superconductors, and liquid crystals. In active fluids, defects become autonomous particles that spontaneously propel from internal active stresses and drive chaotic flows stirring the fluid. The intimate connection between defect textures and active flow suggests that properties of active materials can be engineered by controlling defects, but design principles for their spatiotemporal control remain elusive. Here, we propose a symmetry-based additive strategy for using elementary activity patterns, as active topological tweezers, to create, move, and braid such defects. By combining theory and simulations, we demonstrate how, at the collective level, spatial activity gradients act like electric fields which, when strong enough, induce an inverted topological polarization of defects, akin to a negative susceptibility dielectric. We harness this feature in a dynamic setting to collectively pattern and transport interacting active defects. Our work establishes an additive framework to sculpt flows and manipulate active defects in both space and time, paving the way to design programmable active and living materials for transport, memory, and logic.
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