Journal
PHYSICAL REVIEW LETTERS
Volume 104, Issue 14, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.104.148301
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Funding
- special funds for Major State Research Projects [2005CB321704]
- National Natural Science Foundation of China [50930003]
- Natural Science and Engineering Research Council (NSERC) of Canada
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Nucleation of various ordered phases in block copolymers is studied by examining the free-energy landscape within the self-consistent field theory. The minimum energy path (MEP) connecting two ordered phases is computed using a recently developed string method. The shape, size, and free-energy barrier of critical nuclei are obtained from the MEP, providing information about the emergence of a stable ordered phase from a metastable phase. In particular, structural evolution of embryonic gyroid nucleus is predicted to follow two possible MEPs, revealing an interesting transition pathway with an intermediate perforated layered structure.
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