Layering and position-dependent diffusive dynamics of confined fluids. Academic Article

abstract

• We study the diffusive dynamics of a hard-sphere fluid confined between parallel smooth hard walls. The position-dependent diffusion coefficient normal to the walls is larger in regions of high local packing density. High density regions also have the largest available volume, consistent with the fast local diffusivity. Indeed, local and global diffusivities as a function of the Widom insertion probability approximately collapse onto a master curve. Parallel and average normal diffusivities are strongly coupled at high densities and deviate from bulk fluid behavior.

authors

• Mittal, Jeetain

published proceedings

• Phys Rev Lett

author list (cited authors)

• Mittal, J., Truskett, T. M., Errington, J. R., & Hummer, G.

citation count

• 145

complete list of authors

• Mittal, Jeetain||Truskett, Thomas M||Errington, Jeffrey R||Hummer, Gerhard

publication date

• April 2008

publisher

• American Physical Society (APS)  Publisher

published in

• Physical Review Letters  Journal

keywords

• Colloids
• Computer Simulation
• Diffusion
• Markov Chains
• Models, Chemical

Digital Object Identifier (DOI)

• 10.1103/PhysRevLett.100.145901

start page

• 145901

volume

• 100

issue

• 14

URL

• http://dx.doi.org/10.1103/physrevlett.100.145901