Density mismatch in thin diblock copolymer films
S. Martins, W. A. M. Morgado, M. S. O. Massunaga, M. Bahiana
Abstract
Thin films of diblock copolymer subject to gravitational field are simulated by means of a cell dynamical system model. The difference in density of the two sides of the molecule and the presence of the field causes the formation of lamellar patterns with orientation parallel to the confining walls even when they are neutral. The concentration profile of those films is analyzed in the weak segregation regime and a functional form for the profile is proposed.
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