Comparative study of the surface layer density of liquid surfaces

被引:32
作者
Chacon, E. [1 ,2 ]
Fernandez, E. M. [1 ]
Duque, D. [3 ]
Delgado-Buscalioni, R. [3 ]
Tarazona, P. [2 ,3 ]
机构
[1] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain
[2] Univ Autonoma Madrid, Inst Nicolas Cabrera, E-28049 Madrid, Spain
[3] Univ Autonoma Madrid, Dept Fis Teor Mat Condensada CV, E-28049 Madrid, Spain
来源
PHYSICAL REVIEW B | 2009年 / 80卷 / 19期
关键词
capillary waves; damping; fluctuations; hydrodynamics; liquid films; liquid structure; liquid theory; sampling methods; surface roughness; X-RAY REFLECTIVITY; VAPOR INTERFACE; CAPILLARY WAVES; INTRINSIC STRUCTURE; TEMPERATURE; WATER; ROUGHNESS; PROFILES; DYNAMICS; FLUIDS;
D O I
10.1103/PhysRevB.80.195403
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Capillary wave fluctuations blur the inherent structure of liquid surfaces in computer simulations. The intrinsic sampling method subtracts capillary wave fluctuations and yields the intrinsic surface structure, leading to a generic picture of the liquid surface. The most relevant magnitude of the method is the surface layer density n(s) that may be consistently determined from different properties: the layering structure of the intrinsic density profiles, the turnover rate for surface layer particles, and the hydrodynamic damping rate of capillary waves. The good agreement among these procedures provides evidence for the physical consistency of the surface layering hypothesis, as an inherent physical property of the liquid surfaces. The dependence of the surface compactness, roughness, and exchange rate with temperature is analyzed for several molecular interaction models.
引用
收藏
页数:11
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