Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 156, Issue 24, Pages -Publisher
AIP Publishing
DOI: 10.1063/5.0091721
Keywords
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Funding
- 1000-Talents Program of the Chinese Foreign Experts Bureau
- School of Physical Sciences, University of the Chinese Academy of Sciences, Beijing
- Institute of the Physics, Chinese Academy of Sciences, Beijing
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This study investigates the thermodynamics of charged systems using a recently developed Legendre transform approach. It explores the general form of screening length in Voorn-Overbeek-type theories and finds that the screening length derived from non-electrostatic terms in the Flory-Huggins and Voorn-Overbeek type theories exhibits distinct behavior compared to the standard Debye screening length.
By using a recently formulated Legendre transform approach to the thermodynamics of charged systems, we explore the general form of the screening length in the Voorn-Overbeek-type theories, which remains valid also in the cases where the entropy of the charged component(s) is not given by the ideal gas form as in the Debye-Huckel theory. The screening length consistent with the non-electrostatic terms in the free energy ansatz for the Flory-Huggins and Voorn-Overbeek type theories, derived from the local curvature properties of the Legendre transform, has distinctly different behavior than the often invoked standard Debye screening length, though it reduces to it in some special cases. Published under an exclusive license by AIP Publishing.
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