Bidirectional Freeze-Casting (IMAGE)

DOE/Lawrence Berkeley National Laboratory

Bidirectional Freeze-Casting

Caption

SEM images of xz cross-sections perpendicular to the cold finger show that in conventional freeze-casting (A&D), nucleation produces a disordered layer of ceramic particles. Under bidirectional freeze-casting (C&F), with dual temperature gradients, ice crystals grow both vertically and horizontally into a well-aligned lamellar structure.

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Image courtesy of Berkeley Lab

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