Pumping fluids with periodically beating grafted elastic filaments.
Using Brownian dynamics simulations, we investigate the pumping efficiency of an array of periodically beating semiflexible filaments that are grafted to a surface. Full hydrodynamic interactions among and within filaments and no slip at the surface are considered. Optimal pumping is obtained for a characteristic ratio of applied forward-backward torques and filament persistence length. For independently driven filaments, phase locking between neighboring filaments occurs autonomously via hydrodynamic coupling, giving rise to significantly enhanced pumping efficiency.
Kim
Yong Woon
YW
Physics Department, Technical University Munich, 85748 Garching, Germany.
Netz
Roland R
RR
D001683:Biological Clocks / Q000502:physiology*; D003198:Computer Simulation; D003599:Cytoskeleton / Q000502:physiology*; D004058:Diffusion; D004548:Elasticity; D044085:Microfluidics / Q000379:methods; D008954:Models, Biological; D020409:Molecular Motor Proteins / Q000502:physiology*; D009068:Movement / Q000502:physiology*; D036103:Nanotechnology / Q000379:methods*; D010507:Periodicity
D020409:Molecular Motor Proteins