影响因子：9.185
DOI码：10.1103/PhysRevLett.111.168304
发表刊物：Physical Review Letters (IF: 9.185, JCR 1区，自然指数（Nature Index）收录Top期刊)
摘要：Using the techniques of optical microscopy and particle tracking, we measure the correlated diffusion in a monolayer of uniform silica spheres dispersed at a water-air interface. It is found that the correlated motion of the interfacial particles can be well described by two universal response functions, the normalized longitudinal and transverse diffusion coefficients (D) over tilde (parallel to)(r/r(0)) and (D) over tilde (perpendicular to)(r/r(0)), where r is the interparticle distance and r(0) = a(lambda(S)/a)(3/2) is a new scaling length, which depends on both the Saffman length lambda(S) and particle radius a. The obtained response functions characterize the crossover behavior of the colloidal monolayers from the subphase-dominated three-dimensional hydrodynamics at low surface coverage to the monolayer-dominated 2D hydrodynamics at high concentrations. The surface viscosity eta((2))(s) of the colloidal monolayer obtained by two-particle rheology compares well with the one-particle measurements.
第一作者：Wei Zhang
合写作者：Na Li,Klemen Bohinc,Penger Tong,Wei Chen*
论文编号：168304
卷号：111
期号：16
页面范围：168304
ISSN号：0031-9007
是否译文：否
发表时间：2013-10-18
收录刊物：SCI
发布期刊链接：https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.111.168304