Influence of the lattice topography on a three-dimensional, controllable Brownian motor H. Hagman, C. M. Dion, P. Sjölund, S. J. H. Petra and A. Kastberg EPL, 81 3 (2008) 33001 Published online: 03 January 2008 DOI: 10.1209/0295-5075/81/33001