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- W3103793604 abstract "ATP-driven microtubule-kinesin bundles can self-assemble into two-dimensional active liquid crystals (ALCs) that exhibit a rich creation and annihilation dynamics of topological defects, reminiscent of particle-pair production processes in quantum systems. This recent discovery has sparked considerable interest but a quantitative theoretical description is still lacking. We present and validate a minimal continuum theory for this new class of active matter systems by generalizing the classical Landau-de Gennes free-energy to account for the experimentally observed spontaneous buckling of motor-driven extensile microtubule bundles. The resulting model agrees with recently published data and predicts a regime of antipolar order. Our analysis implies that ALCs are governed by the same generic ordering principles that determine the non-equilibrium dynamics of dense bacterial suspensions and elastic bilayer materials. Moreover, the theory manifests an energetic analogy with strongly interacting quantum gases. Generally, our results suggest that complex non-equilibrium pattern-formation phenomena might be predictable from a few fundamental symmetry-breaking and scale-selection principles." @default.
- W3103793604 created "2020-11-23" @default.
- W3103793604 creator A5067537144 @default.
- W3103793604 creator A5086396945 @default.
- W3103793604 date "2016-09-09" @default.
- W3103793604 modified "2023-10-15" @default.
- W3103793604 title "Antipolar ordering of topological defects in active liquid crystals" @default.
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- W3103793604 doi "https://doi.org/10.1088/1367-2630/18/9/093006" @default.
- W3103793604 hasPublicationYear "2016" @default.
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