Simulated rhythmic growth of targeted single crystal by polymer phase-field model

The novel phase field model with the “polymer characteristic” was established based on a nonconserved spatiotemporal Ginzburg–Landau equation TDGL model. Especially, we related the parameters of crystal temperature with the TDGL model. Moreover, the diffusion equations were discretized according to the diffusion coefficient of every lattice site in various crystal growth faces, and the shape of lattice was selected based on the real proportion of the unit cell dimensions. Spatiotemporal growth of stripped single crystals during isochronous decoration has been investigated theoretically based on this phase field model. Two dimensional numerical calculations were performed to elucidate the faceted single crystal growth including the stripped lozenge-shaped and hexagonal single crystals. Our simulated patterns were in good agreement with the experimental morphologies, and the physical origin of polymer single crystal growth was discussed.