2026-04-13T02:38:15Zhttps://recercat.cat/oai/request

oai:recercat.cat:2445/187672025-12-05T16:45:50Zcom_2072_1057col_2072_478823col_2072_478917

00925njm 22002777a 4500 dc Gómez Marín, Alejandro author Sancho, José M. author 2011-07-07T12:52:14Z 2011-07-07T12:52:14Z 2006 We study analytically a thermal Brownian motor model and calculate exactly the Onsager coefficients. We show how the reciprocity relation holds and that the determinant of the Onsager matrix vanishes. Such a condition implies that the device is built with tight coupling. This explains why Carnot¿s efficiency can be achieved in the limit of infinitely slow velocities. We also prove that the efficiency at maximum power has the maximum possible value, which corresponds to the Curzon-Alhborn bound. Finally, we discuss the model acting as a Brownian refrigerator. Fluctuacions (Física) Processos de moviment brownià Processos irreversibles Termodinàmica del desequilibri Fluctuations (Physics) Brownian motion processes Irreversible processes Nonequilibrium thermodynamics Tight coupling in thermal Brownian motors