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http://hdl.handle.net/2445/18767
Title: | Tight coupling in thermal Brownian motors |
Author: | Gómez Marín, Alejandro Sancho, José M. |
Keywords: | Fluctuacions (Física) Processos de moviment brownià Processos irreversibles Termodinàmica del desequilibri Fluctuations (Physics) Brownian motion processes Irreversible processes Nonequilibrium thermodynamics |
Issue Date: | 2006 |
Publisher: | The American Physical Society |
Abstract: | 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. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1103/PhysRevE.74.062102 |
It is part of: | Physical Review E, 2006, vol. 74, p. 062102-062102 |
URI: | http://hdl.handle.net/2445/18767 |
Related resource: | http://dx.doi.org/10.1103/PhysRevE.74.062102 |
ISSN: | 1063-651X |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
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550797.pdf | 96.53 kB | Adobe PDF | View/Open |
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