Self-diffusion of colloidal particles in a two-dimensional suspension: Are deviations from Fick's law experimentally observable

Journal Article · Mon Dec 09 00:00:00 EST 1991 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.67.3459· OSTI ID:6110624

van der Hoef, M A; Frenkel, D ^[1]; Ladd, A J.C. ^[2]

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1. Foundation for Fundamental Research on Matter (FOM)-Institute for Atomic and Molecular Physics, Kruislaan 407, 1098 SJ Amsterdam (The Netherlands)
2. Lawrence Livermore National Laboratory, Livermore, California 94550 (United States)

Simulations of a colloidal particle suspended in a two-dimensional fluid are reported. The dissipative and fluctuating hydrodynamic forces acting on the particle are modeled by a lattice gas. Our results indicate that large long-time tails are present in both the translational and the rotational velocity correlation functions; these are the first observations of a rotational long-time tail. The strong translational tail leads to an observable renormalization of the diffusion coefficient; our results suggest that experimental observation of the latter effect is possible.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6110624
• Journal Information: Physical Review Letters; (United States), Vol. 67:24; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COLLOIDS
SELF-DIFFUSION
CORRELATION FUNCTIONS
ELECTRON GAS
ENERGY LOSSES
FLUCTUATIONS
HYDRODYNAMICS
MATHEMATICAL MODELS
ROTATION
SIMULATION
THEORETICAL DATA
VELOCITY
DATA
DIFFUSION
DISPERSIONS
FLUID MECHANICS
FLUIDS
FUNCTIONS
GASES
INFORMATION
LOSSES
MECHANICS
MOTION
NUMERICAL DATA
VARIATIONS
360606* - Other Materials- Physical Properties- (1992-)