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Using different segmental dynamics and relaxation, characteristics of theinterface growth is examined in an electrophoretic deposition of polymer chainson a three (2+1) dimensional discrete lattice with a Monte Carlo simulation.Incorporation of faster modes such as crankshaft and reptation movements alongwith the relatively slow kink-jump dynamics seems crucial in relaxing theinterface width. As the continuously released polymer chains are driven (viasegmental movements) and deposited, the interface width $W$ grows with thenumber of time steps $t$, $W \propto t^{\beta},$ ($\beta \sim 0.4$--$0.8)$,which is followed by its saturation to a steady-state value $W_s$. Stopping therelease of additional chains after saturation while continuing the segmentalmovements relaxes the saturated width to an equilibrium value ($W_s \to W_r$).Scaling of the relaxed interface width $W_r$ with the driving field $E$, $W_r\propto E^{-1/2}$ remains similar to that of the steady-state $W_s$ width. Incontrast to monotonic increase of the steady-state width $W_s$, the relaxedinterface width $W_r$ is found to decay (possibly as a stretched exponential)with the molecular weight.Comment: 5 pages, 7 figure

Interface relaxation in electrophoretic deposition of polymer chains: Effects of segmental dynamics, molecular weight, and field