Active modulation of surfactant driven flow instabilities by swarming bacteria
| Autor: | Varsha Singh, Shalini Harkar, Shubham Joge, Amith Z. Abdulla, K. N. Hithysini, A. K. Mishra, Harshitha S. Kotian, Manoj M. Varma |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
education.field_of_study
Bacteria Chemistry Movement Bacterial motility Population FOS: Physical sciences Pattern formation Swarming motility Models Biological 01 natural sciences 010305 fluids & plasmas Surface-Active Agents Formalism (philosophy of mathematics) Pulmonary surfactant Biological Physics (physics.bio-ph) Phase space 0103 physical sciences Fluid dynamics Physics - Biological Physics 010306 general physics education Biological system |
| Popis: | Models based on surfactant driven instabilities have been employed to describe pattern formation by swarming bacteria. However, by definition, such models cannot account for the effect of bacterial sensing and decision making. Here we present a more complete model for bacterial pattern formation which accounts for these effects by coupling active bacterial motility to the passive fluid dynamics. We experimentally identify behaviours which cannot be captured by previous models based on passive population dispersal and show that a more accurate description is provided by our model. It is seen that the coupling of bacterial motility to the fluid dynamics significantly alters the phase space of surfactant driven pattern formation. We also show that our formalism is applicable across bacterial species. |
| Databáze: | OpenAIRE |
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