Thermal Roughening and Deroughening at Polymer Interfaces in Electrophoretic Deposition

Details Thermal Roughening and Deroughening at Polymer Interfaces in Electrophoretic Deposition Thermal Roughening and Deroughening at Polymer Interfaces in Electrophoretic Deposition

2006-07-17

arxiv.org/abs/cond-mat/0607424v1

Macromolecules 2005, 38, 992--995

Physics

Condensed Matter

Soft Condensed Matter

This is a work of the U.S. Government and is not subject to copyright protection in the United States. Foreign copyrights may

Scientific paper

10.1021/ma034180j

Thermal scaling and relaxation of the interface width in an electrophoretic deposition of polymer chains is examined by a three-dimensional Monte Carlo simulation on a discrete lattice. Variation of the equilibrium interface width $W_r$ with the temperature $T$ shows deroughening $W_r \propto T^{-\delta}$, with $\delta \sim 1/4$, at low temperatures and roughening $W_r \propto T^{\nu}$, with $\nu \sim 0.4$ at high temperatures. The roughening-deroughening transition temperature $T_t$ increases with longer chain lengths and is reduced by using the slower segmental dynamics.

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