ISSN:
1089-7690
Source:
AIP Digital Archive
Topics:
Physics
,
Chemistry and Pharmacology
Notes:
From molecular dynamics simulations of liquid–liquid and liquid–vapor interfaces at low temperatures between two simple liquids we determine the Baus elastic constants [M. Baus, J. Chem. Phys. 74, 2003 (1981)] and their variation across the interface. For certain cases the nonlocal stress–stress correlation functions were also calculated. A two-phase system with a planar interface is characterized by five independent elastic moduli. Two moduli show a dramatic decrease inside the liquid–liquid interface, similar to the drop in viscosity ("lubricating effect'') we found in sheared interfaces [P. Padilla, S. Toxvaerd, and J. Stecki, J. Chem. Phys. 103, 716 (1995)]. The other three, which are zero in the bulk region, show a oscillatory variation across the interface. One of these three is related to the surface tension. © 1996 American Institute of Physics.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.471437
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