Document Type

Article

Publication Date

4-1-2002

Department

Physics and Astronomy

School

Mathematics and Natural Sciences

Abstract

Using different segmental dynamics and relaxation, characteristics of the interface growth is examined in an electrophoretic deposition of polymer chains on a three (2+1)-dimensional discrete lattice with a Monte Carlo simulation. Incorporation of faster modes such as crankshaft and reptation movements along with the relatively slow kink-jump dynamics seems crucial in relaxing the interface width. As the continuously released polymer chains are driven (via segmental movements) and deposited, the interface width W grows with the number of time steps t, Wtβ, (β ~0.4-0.8), which is followed by its saturation to a steady-state value Ws. Stopping the release of additional chains after saturation while continuing the segmental movements relaxes the saturated width to an equilibrium value (WsWr). Scaling of the relaxed interface width Wr with the driving field E, WrE-1/2 remains similar to that of the steady-state Ws width. In contrast to monotonic increase of the steady-state width Ws, the relaxed interface width Wr is found to decay (possibly as a stretched exponential) with the molecular weight.

Comments

©Physical Review E

Publisher version

Publication Title

Physical Review E

Volume

65

Issue

4

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