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Evolving Thin Polymer Film Driven by Electrostatic Field

Published online by Cambridge University Press:  01 February 2011

Dongchoul Kim  and
Wei Lu
Dongchoul Kim
Affiliation:
eastsage@umich.edu, University of Michigan, Mechanical Engineering, 2182 G.G.Brown 2350 Hayward, Ann Arbor, MI, 48109-2125, United States, 734-936-3189
Wei Lu
Affiliation:
weilu@umich.edu, University of Michigan, Assistant Professor, United States
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Abstract

Experiments have shown that a thin polymer film subjected to an electrostatic field may lose stability at the polymer-air interface, leading to uniform self-organized pillars emerging out of the film surface. This paper presents a three dimensional dynamic model that accounts for the behavior. Attention is focused on the interplay of the thermodynamic forces and the kinetic processes. The coupled diffusion, viscous flow, and dielectric effect are incorporated into a phase field framework. The semi-implicit Fourier spectral method and the preconditioned biconjugate-gradient method are applied in the simulations for high efficiency and numerical stability. Numerical simulations reveal rich dynamics of the pattern formation process.

Keywords

self-assemblynanostructurefilm
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 889: Symposium W – Electroresponsive Polymers and Their Applications , 2005 , 0889-W01-07
Copyright
Copyright © Materials Research Society 2006

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References

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