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2011-01

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cc by (c) Pérez Madrid, Agustín et al., 2011
Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/178264

Mesoscopic Non-Equilibrium Thermodynamics: Application to Radiative Heat Exchange in Nanostructures

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Systems in conditions of equilibrium strictly follow the rules of thermodynamics (Callen, 1985). In such cases, despite the intricate behaviour of large numbers of molecules, the system can be completely characterized by a few variables that describe global average properties. The extension of thermodynamics to non-equilibrium situations entails the revision of basic concepts such as entropy and its related thermodynamic potentials as well as temperature that are strictly defined in equilibrium. Non-equilibrium thermodynamics proposes such an extension (de Groot & Mazur, 1984) for systems that are in local equilibrium. Despite its generality, this theory is applicable only to situations in which the system manifests a deterministic behaviour where fluctuations play no role. Moreover, nonequilibrium thermodynamics is formulated in the linear response domain in which the fluxes of the conserved local quantities (mass, energy, momentum, etc.) are proportional to the thermodynamic forces (gradients of density, temperature, velocity, etc.). While the linear approximation is valid for many transport processes, such as heat conduction and mass diffusion, even in the presence of large gradients, it is not appropriate for activated processes such as chemical and biochemical reactions in which the system immediately enters the non-linear domain or for small systems in which fluctuations may be relevant...

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http://doi.org/10.5772/13138

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Termodinàmica del desequilibri, Nanoestructures

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Nonequilibrium thermodynamics, Nanostructures

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Llibres / Capítols de llibre (Física de la Matèria Condensada)

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PÉREZ MADRID, Agustín, RUBÍ CAPACETI, José Miguel and LAPAS, Luciano Calheiros. Mesoscopic Non-Equilibrium Thermodynamics: Application to Radiative Heat Exchange in Nanostructures. Chapter 10 in: Tadashi. Mizutani. 2011. Thermodynamics. IntechOpen. ISBN: 978-953-307-544-0. DOI: 10.5772/558. pp: 195-204.. [consulted: 11 of October of 2026]. Available at: https://hdl.handle.net/2445/178264

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