影响因子：4.245
DOI码：10.1017/jfm.2020.693
发表刊物：Journal of Fluid Mechanics (JCR 1区Top期刊)
摘要：Near-interface colloidal monolayers are often used as model systems for research on hydrodynamics in biophysics systems and in the chemical industry. Using microrheological methods, the correlated diffusion of particles is experimentally measured in colloidal monolayers near a water–air interface. The results show that the scaling lengths (χ||, χ⊥) of such colloidal monolayers are anisotropic in two orthogonal directions within the monolayer, which are parallel and perpendicular to the line connecting the centres of a particle pair. The former (χ||) is the Saffman length of the monolayer, while the latter (χ⊥) is a function of both the Saffman length and the radius of the colloids. The size of the colloids is involved in χ⊥ but not χ||, which reflects the discrete nature of the monolayer in the transverse direction and the continuous nature of the monolayer in the longitudinal direction. From the scaling lengths, the viscosities of the colloidal monolayers are obtained, which agree with those obtained from the single-particle diffusion coefficients. The influence of the boundary condition imposed by the nearby interface on the hydrodynamic interactions is in a power-law behaviour of the distance z.
第一作者：Na Li
合写作者：Wei Zhang,Zehui Jiang,Wei Chen
卷号：905
页面范围：A3
是否译文：否
发表时间：2020-08-11
收录刊物：SCI
发布期刊链接：https://www.cambridge.org/core/journals/journal-of-fluid-mechanics/article/anisotropic-scaling-lengths-of-colloidal-monolayers-near-a-waterair-interface/4405738E42776D13B19BE0BF75B69C0F