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BPII crystal nucleation and growth from an isotropic phase: cooling. The hybrid cell is cooled from an isotropic phase at 42.8 °C using three cooling schemes: (A) a sudden temperature decrease to 40.8 °C; (B) an initial temperature decrease of 1 °C, followed by an additional one after 60 s; and (C) a slow stepwise cooling process of 0.4 °C every 30 s, and corresponding Kossel diagram for the final BPII state. The reported temperature values are for the Si substrate.
