Adsorption and diffusion in a one-dimensional potential well.
We investigate the adsorption and diffusion of colloidal particles at an interface containing a one-dimensional potential well. It is observed how the adsorption kinetics onto the wall is altered with time, and one observes the formation of a particle chain. We find that the time it takes for a bead to penetrate into the chain depends strongly on the particle density, and beyond a critical value this time diverges. We also study diffusion within the well, and find that at low particle densities the short time behavior is governed by normal Fickian diffusion.
Helseth
L E
LE
Max Planck Institute of Colloids and Interfaces, D-14424, Potsdam, Germany.
Wen
H Z
HZ
Fischer
T M
TM
Johansen
T H
TH