Complementarity relation for irreversible processes near steady states
A relation giving a minimum for the irreversible work in quasi-equilibrium processes was derived by Sekimoto et al. [K. Sekimoto, S. Sasa, J. Phys. Soc. Japan 66 [1997] 3326] in the framework of stochastic energetics. This relation can also be written as a type of "uncertainty principle" in such a way that the precise determination of the Helmholtz free energy through the observation of the work [W] requires an indefinitely large experimental time delta t. In the present article, we extend this relation to the case of quasi-steady processes by using the concept of non-equilibrium Helmholtz free energy. We give a formulation of the second law for these processes that extends that presented by Sekimoto [K. Sekimoto, Prog. Theoret. Phys. Suppl. No. 130 [1998] 17] by a term of the first order in the inverse of the experimental time. As an application of our results, two possible experimental situations are considered: stretching of a RNA molecule and the drag of a dipolar particle in the presence of a gradient of electric force.
| Main Authors: | , , |
|---|---|
| Format: | Texto biblioteca |
| Language: | eng |
| Subjects: | FLUCTUATION PHENOMENA, LANGEVIN EQUATION, STOCHASTIC ENERGETICS, THERMODYNAMICS, COMPLEMENTARITY RELATIONS, IRREVERSIBLE PROCESS, PRECISE DETERMINATIONS, QUASI-EQUILIBRIUM PROCESS, UNCERTAINTY PRINCIPLES, DIFFERENTIAL EQUATIONS, FREE ENERGY, RNA, STOCHASTIC SYSTEMS, STATISTICAL MECHANICS, |
| Online Access: | http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=46900 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|