Anomalous dynamics of an elastic membrane in an active fluid

Abstract

Using numerical simulations, we characterized the behavior of an elastic membrane immersed in an active fluid. Our findings reveal a nontrivial folding and re-expansion of the membrane that is controlled by the interplay of its resistance to bending and the self-propulsion strength of the active components in solution. We show how flexible membranes tend to collapse into multi-folded states, whereas stiff membranes oscillates between an extended configuration and a singly folded state. This study provides a simple example of how to exploit the random motion of active particles to perform mechanical work at the micro-scale.

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Cited by in corpus (18)

• Active Particles in Complex and Crowded Environments
• Active particles with soft and curved walls: Equation of state, ratchets, and instabilities
• An active approach to colloidal self-assembly
• Time-(ir)reversibility in active matter: from micro to macro
• Active Brownian particles near straight or curved walls: Pressure and boundary layers
• Collective forces in scalar active matter
• Elasticity-based polymer sorting in active fluids: A Brownian dynamics study
• Buckling, Crumpling, and Tumbling of Semiflexible Sheets in Simple Shear Flow
• Activity-assisted self-assembly of colloidal particles
• Self-propelled particle in a nonconvex external potential: Persistent limit in one dimension
• Scaling behavior of non-equilibrium measures in internally driven elastic assemblies
• Kinetic temperature and pressure of an active Tonks gas
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• Crystallization and flow in active patch systems
• Dynamic Overlap Concentration Scale of Active Colloids
• Experimental evidence of the failure of Jarzynski equality in active baths
• Spontaneous crumpling of active spherical shells
• Coupling an elastic string to an active bath: the emergence of inverse damping