Specific Self‐Repairing by Morphology Prejudging

Abstract

The thin surface layer growth during the regeneration of incomplete potassium dihydrogen phosphate crystal is more perplexing than the ordinary layer‐by‐layer growth. In a previous paper, the driving force of the thin surface layer growth was discussed; the present paper focuses on the regeneration process and final regeneration morphology. Based on the analysis of thin surface layer area per unit repaired volume, it is found that convex polyhedron is more advantageous than concave polyhedron. It is also found that the general morphology of repaired incomplete crystal is convex polyhedron of minimum volume covered by singular surfaces. The most important thing is, numbers of regeneration details suggest that the incomplete crystal achieves the self‐repairing by morphology prejudging.

Natural strategies for creating non-equilibrium morphology with self-repairing capability towards rapid growth of excellent YBa2Cu3O7−δ crystals

“…Regarded as 'the biggest mystery' (Zaitseva & Carman, 2001), the mechanism of this unique growth phenomenon has not been comprehensively clarified to date. Fundamentally, it is a selfrepairing process (Wang et al, 2019b), in which a crystal with incomplete parts is naturally and swiftly completed to its equilibrium shape in a supersaturated solution. In fact, selfrepair is a more universal phenomenon than TSLG and has been widely found in nature in extraordinary tendencies towards restoring physiological functions for living species or returning to equilibrium states for non-biological materials (Ceratti et al, 2018;Singh et al, 2018).…”