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Crystallization by Amorphous Particle Attachment: On the Evolution of Texture

机译:无定形颗粒附件结晶:纹理的演变

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摘要

Crystallization by particle attachment (CPA) is a gradual process where each step has its own thermodynamic and kinetic constrains defining a unique pathway of crystal growth. An important example is biomineralization of calcium carbonate through amorphous precursors that are morphed into shapes and textural patterns that cannot be envisioned by the classical monomer-by-monomer approach. Here, a mechanistic link between the collective kinetics of mineral deposition and the emergence of crystallographic texture is established. Using the prismatic ultrastructure in bivalve shells as a model, a fundamental leap is made in the ability to analytically describe the evolution of form and texture of biological mineralized tissues and to design the structure and crystallographic properties of synthetic materials formed by CPA.
机译:通过颗粒连接(CPA)结晶是一种逐渐过程,其中每个步骤具有其自身的热力学和动力学约束,其定义晶体生长的独特途径。 一个重要的例子是碳酸钙通过无定形前体的生物蛋白,其变形成形和纹理图案,其不能通过典型的单体逐种方法设想。 这里,建立了矿物沉积集体动力学与结晶纹理的出现之间的机械联系。 使用双壳壳中的棱镜超微结构作为模型,可以在分析生物矿化组织的形式和质地的演变和设计通过CPA形成的合成材料的结构和晶体性能的能力中进行了根本性的飞跃。

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