Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Excess equimolar radius of liquid drops. / Horsch, Martin; Hasse, Hans; Shchekin, Alexander K.; Agarwal, Animesh; Eckelsbach, Stefan; Vrabec, Jadran; Müller, Erich A.; Jackson, George.
в: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Том 85, № 3, 031605, 26.03.2012.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Excess equimolar radius of liquid drops
AU - Horsch, Martin
AU - Hasse, Hans
AU - Shchekin, Alexander K.
AU - Agarwal, Animesh
AU - Eckelsbach, Stefan
AU - Vrabec, Jadran
AU - Müller, Erich A.
AU - Jackson, George
PY - 2012/3/26
Y1 - 2012/3/26
N2 - The curvature dependence of the surface tension is related to the excess equimolar radius of liquid drops, i.e., the deviation of the equimolar radius from the radius defined by the macroscopic capillarity approximation. Based on the Tolman approach and its interpretation by Nijmeijer, the surface tension of spherical interfaces is analyzed in terms of the pressure difference due to curvature. In the present study, the excess equimolar radius, which can be obtained directly from the density profile, is used instead of the Tolman length. Liquid drops of the truncated and shifted Lennard-Jones fluid are investigated by molecular dynamics simulation in the canonical ensemble, with equimolar radii ranging from 4 to 33 times the Lennard-Jones size parameter σ. In these simulations, the magnitude of the excess equimolar radius is shown to be smaller than σ/2. This suggests that the surface tension of liquid drops at the nanometer length scale is much closer to that of the planar vapor-liquid interface than reported in studies based on the mechanical route.
AB - The curvature dependence of the surface tension is related to the excess equimolar radius of liquid drops, i.e., the deviation of the equimolar radius from the radius defined by the macroscopic capillarity approximation. Based on the Tolman approach and its interpretation by Nijmeijer, the surface tension of spherical interfaces is analyzed in terms of the pressure difference due to curvature. In the present study, the excess equimolar radius, which can be obtained directly from the density profile, is used instead of the Tolman length. Liquid drops of the truncated and shifted Lennard-Jones fluid are investigated by molecular dynamics simulation in the canonical ensemble, with equimolar radii ranging from 4 to 33 times the Lennard-Jones size parameter σ. In these simulations, the magnitude of the excess equimolar radius is shown to be smaller than σ/2. This suggests that the surface tension of liquid drops at the nanometer length scale is much closer to that of the planar vapor-liquid interface than reported in studies based on the mechanical route.
KW - curvature correction drop Tolman length surface tension
UR - http://www.scopus.com/inward/record.url?scp=84859046224&partnerID=8YFLogxK
U2 - 10.1103/PhysRevE.85.031605
DO - 10.1103/PhysRevE.85.031605
M3 - Article
VL - 85
JO - Physical Review E
JF - Physical Review E
SN - 1539-3755
IS - 3
M1 - 031605
ER -
ID: 36050970