Morphology of Active Deformable 3D Droplets
| Autor: | Julia M. Yeomans, Liam J. Ruske |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Morphology (linguistics)
Materials science Physics QC1-999 Dynamics (mechanics) FOS: Physical sciences General Physics and Astronomy Condensed Matter - Soft Condensed Matter Disclination 01 natural sciences 010305 fluids & plasmas Shape control Biological Physics (physics.bio-ph) Chemical physics Liquid crystal Active stress 0103 physical sciences Soft Condensed Matter (cond-mat.soft) Physics - Biological Physics 010306 general physics |
| Zdroj: | Physical Review X Physical Review X, Vol 11, Iss 2, p 021001 (2021) |
| ISSN: | 2160-3308 |
| Popis: | We numerically investigate the morphology and disclination line dynamics of active nematic droplets in three dimensions. Although our model incorporates only the simplest possible form of achiral active stress, active nematic droplets display an unprecedented range of complex morphologies. For extensile activity, fingerlike protrusions grow at points where disclination lines intersect the droplet surface. For contractile activity, however, the activity field drives cup-shaped droplet invagination, run-and-tumble motion, or the formation of surface wrinkles. This diversity of behavior is explained in terms of an interplay between active anchoring, active flows, and the dynamics of the motile disclination lines. We discuss our findings in the light of biological processes such as morphogenesis, collective cancer invasion, and the shape control of biomembranes, suggesting that some biological systems may share the same underlying mechanisms as active nematic droplets. |
| Databáze: | OpenAIRE |
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