1. Fig. 2 Construction of a mimetic biomineralization frontier for epitaxial crystal growth by using CPICs.
Construction of a mimetic biomineralization frontier for epitaxial crystal growth by using CPICs. (A) Schematic of the epitaxial growth of crystalline HAP from the construction of the amorphous frontier on its surface. (B) The HAP crystal (marked with a yellow dotted line) coated with a continuous ACP layer (marked with a blue dotted line). Inset: SAED pattern of the amorphous layer. (C) The epitaxial growth of HAP was detected in the exact same region as in (B). The new crystal regrowth is marked with a red dotted line. Inset: SAED pattern of HAP and regrown crystal, which indicates that these crystals are aligned parallel to the crystallographic c axis of the HAP. (D) A CPIC ethanol solution dropped on the surface of enamel and air-dried for 15 min. (E) Cross-sectional SEM image of enamel coated with an ACP layer. (F) HRTEM image of a focused ion beam (FIB)–prepared ultrathin section of enamel coated with a continuous ACP layer (green region). Inset: SAED patterns of the original enamel rod and repaired layer. Scale bars, 10 nm (B and C), 1 mm (D), 1 μm (E), 50 nm (F), 2 nm−1 (C, inset), and 5 nm−1 (F, inset).
Changyu Shao et al. Sci Adv 2019;5:eaaw9569
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