Abstract.
We study collections of rotatory motors confined to 2-dimensional manifolds. The rotational motion induces a repulsive hydrodynamic interaction between motors leading to a non-trivial collective behavior. For high rotation speed, motors should arrange on a triangular lattice exhibiting crystalline order. At low speed, they form a disordered phase where diffusion is enhanced by velocity fluctuations. In confining geometries and under suitable boundary conditions, motor-generated flow might enhance left-right symmetry-breaking transport. All these effects should be experimentally observable for motors driven by external fields and for dipolar biological motors embedded into lipid membranes in a viscoelastic solvent.
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Following the discussion given in reference [20], a force quadrupole is the simplest force distribution which is consistent with the rotational motion of the motor and the requirement that no external force is present.
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Received: 9 October 2003, Published online: 11 May 2004
PACS:
87.16.-b Subcellular structure and processes - 05.40.-a Fluctuation phenomena, random processes, noise, and Brownian motion - 87.15.Kg Molecular interactions; membrane-protein interactions
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Lenz, P., Joanny, JF., Jülicher, F. et al. Membranes with rotating motors: Microvortex assemblies. Eur. Phys. J. E 13, 379–390 (2004). https://doi.org/10.1140/epje/i2003-10083-9
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DOI: https://doi.org/10.1140/epje/i2003-10083-9