Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 131, Issue 24, Pages -Publisher
WILEY-BLACKWELL
DOI: 10.1002/APP.40790
Keywords
copolymers; films; nanostructured polymers; polystyrene; self-assembly
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Funding
- Dow Chemical Company
- Dow Materials Institute at the University of California, Santa Barbara
- MRSEC Program of the NSF [DMR 1121053]
- NSF
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We use self-consistent field theory to calculate the energy of defect formation in cylinder-forming diblock copolymers in laterally confining thin channels. We focus on two isolated defects, dislocations and disclinations and explore a wide range of polymer and channel characteristics. Our findings suggest appropriate conditions for the design of optimized graphoepitaxial processes, where defects are limited to very low concentrations. Using the string method, we also investigate the energy barriers and kinetic pathways of the transition from defective to perfect states. (C) 2014 Wiley Periodicals, Inc.
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