What is mesoscopic thermodynamics?

Mesoscopic and nanoscale thermodynamics is a field of science that can be defined as a semi-phenomenological approach to systems and phenomena in which a length scale, intermediate between the atomistic scale and the macroscopic scale, emerges and where this intermediate length scale does affect the physical properties profoundly. This is still thermodynamics, as the phenomena are still governed by statistical physics, but, in contrast to “macro-thermodynamics” it explicitly contains a mesoscopic length scale associated with the structure of soft matter. The concept is also being extended to include mesoscopic non-equilibrium thermodynamics.

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