title: Pumping fluids with periodically beating grafted elastic filaments.
abstract: 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.
authors.affiliation: Physics Department, Technical University Munich, 85748 Garching, Germany.
authors.forename: Yong Woon
authors.initials: YW
authors.lastname: Kim
authors.forename: Roland R
authors.initials: RR
authors.lastname: Netz
mesh_terms: 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
chemical_list: D020409:Molecular Motor Proteins