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- Title
Thermodynamic and kinetic aspects of defectivity in directed self-assembly of cylinder-forming diblock copolymers in laterally confining thin channels.
- Authors
Kim, Bongkeun; Laachi, Nabil; Delaney, Kris T.; Carilli, Michael; Kramer, Edward J.; Fredrickson, Glenn H.
- Abstract
ABSTRACT 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. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40790.
- Subjects
DIBLOCK copolymers; COPOLYMERS; THIN films; EPITAXY; FIELD theory (Physics)
- Publication
Journal of Applied Polymer Science, 2014, Vol 131, Issue 24, pn/a
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.40790