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Complete Scaling for Inhomogeneous Fluids C. E. Bertrand1
 

Summary: Complete Scaling for Inhomogeneous Fluids
C. E. Bertrand1
and M. A. Anisimov2,*
1
Department of Physics, University of Maryland, College Park, Maryland 20742, USA
2
Institute for Physical Science & Technology and Department of Chemical & Biomolecular Engineering, University of Maryland,
College Park, Maryland 20742, USA
(Received 19 January 2010; published 19 May 2010)
``Complete scaling,'' which maps asymmetric fluid criticality onto the symmetric Ising model, is
extended to spatially inhomogeneous fluids. This extension enables us to obtain a fluctuation-modified
asymmetric interfacial density profile, which incorporates leading effects from the asymmetry of fluid
phase coexistence and the asymmetry of the correlation length. The derived asymmetric interfacial profile
is used to calculate Tolman's length, the diverging coefficient of the curvature correction to the surface
tension. The amplitude of the divergent Tolman length is found to depend on the asymmetry of the
correlation length.
DOI: 10.1103/PhysRevLett.104.205702 PACS numbers: 64.60.F, 64.70.Ja
Describing real systems by ``ideal,'' highly simplified,
theoretical models without losing essential physical infor-
mation is a ubiquitous challenge in the quantitative de-

  

Source: Anisimov, Mikhail - Institute for Physical Science and Technology & Department of Chemical Engineering and Biomolecular Engineering, University of Maryland at College Park

 

Collections: Physics; Materials Science