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Block Copolymer Ordering With a Spatiotemporally Inhomogeneous Mobility

Published

Author(s)

August W. Bosse, Jack F. Douglas, Brian Berry, Ronald L. Jones, Alamgir Karim

Abstract

Motivated by recent measurements of zone annealing in block copolymer films at low temperatures, we implement a spatiotemporal mobility gradient with intrinsic variations associated with dynamic heterogeneities in the saddle point relaxation of a diblock copolymer self-consistent field theory. This model of the dynamics provides insight into the nature of the ordering front observed in low-temperature zone annealing experiments. Specifically, we demonstrate that a spatiotemporallyinhomogeneous mobility can be successfully implemented as a means to control microdomain ordering in block copolymer systems. Furthermore, the simulations suggest that glass physics can play an important role in the ordering of block copolymer microdomains.
Citation
Physical Review Letters
Volume
99

Keywords

block copolymers, defects, glass transition, mobility, ordering, SCFT, simulation, zone annealing, zone refinement

Citation

Bosse, A. , Douglas, J. , Berry, B. , Jones, R. and Karim, A. (2007), Block Copolymer Ordering With a Spatiotemporally Inhomogeneous Mobility, Physical Review Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852741 (Accessed March 4, 2024)
Created November 20, 2007, Updated February 19, 2017