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Vortex ratchet induced by controlled edge roughness

Video abstract for the article 'Vortex ratchet induced by controlled edge roughness' by D Cerbu, V N Gladilin, J Cuppens, J Fritzsche, J Tempere, J T Devreese, V V Moshchalkov, A V Silhanek and J Van de Vondel (D Cerbu et al 2013 New J. Phys. 15 063022). Read the full article in New Journal http://iopscience.iop.org/1367-2630/15/6/063022.