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Propulsion with a Rotating Elastic Nanorod

Manoel Manghi, Xaver Schlagberger, Roland R. Netz

par Manoel Manghi - 11 avril 2006

The dynamics of a rotating elastic filament is investigated using Stokesian simulations. The filament, straight and tilted with respect to its rotation axis for small driving torques, undergoes at a critical torque a strongly discontinuous shape bifurcation to a helical state. It induces a substantial forward propulsion whatever the sense of rotation : a nanomechanical force-rectification device is established.