open access

https://hdl.handle.net/2115/82643

Solution landscapes of the diblock copolymer-homopolymer model under two-dimensional confinement

英語

2021-07-29

American Physical Society (APS)

Physical Review E

104(1)

014505

We investigate the solution landscapes of the confined diblock copolymer and homopolymer in twodimensional domain by using the extended Ohta-Kawasaki model. The projection saddle dynamics method is developed to compute the saddle points with mass conservation and construct the solution landscape by coupling with downward and upward search algorithms. A variety of stationary solutions are identified and classified in the solution landscape, including Flower class, Mosaic class, Core-shell class, and Tai-chi class. The relationships between different stable states are shown by either transition pathways connected by index-1 saddle points or dynamical pathways connected by a high-index saddle point. The solution landscapes also demonstrate the symmetry-breaking phenomena, in which more solutions with high symmetry are found when the domain size increases.

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Copyright 2021 by The American Physical Society.

2470-0045