Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2017, Tutor: José María Sancho
We simulate the Langevin equation in 2D for forces coming from two different type a phenomenon of directed transport in a spatially periodic system. We compare our results with a real experiment in the traveling case and we analyze how the average velocities and diffusions in the canonical directions depend on the potential parameters: a period time [tau] in the flashing ratchet and a velocity [ípsilon] in the traveling ratchet.