Towards systematics of calcite biocrystals: insight from the inside
Towards systematics of calcite biocrystals: insight from the inside
复制标题
方解石生物晶体的系统学：内部洞察
DOI：
10.1524/zkri.2012.1479
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发表时间：
2012
影响因子：
3.8
通讯作者：
Guntram Jordan
中科院分区：
文献类型：
--
作者：
W. Schmahl;E. Griesshaber;K. Kelm;A. Ball;Andreas Goetz;Dayin Xu;Lisa Kreitmeier;Guntram Jordan
摘要方解石生物晶体广泛存在于贝壳、蛋壳、牙齿、脊椎或感觉器官中。这些材料中的方解石相存在于一系列成分中，从多晶织物到“单晶”。我们展示了方解石生物晶体结构的系统学，从腕足类和软体动物贝壳的混杂中晶纤维，到具有形态共取向和晶格共取向的中晶纤维形成的亚毫米尺寸的混杂复合晶体集合体，再到更复杂的面向目的的棘皮动物牙齿复合晶体，其特征是不同形态和组成的微结构元素具有高度的单晶状3D取向相关性。这些系统学依赖于电子背散射衍射(EBSD)和透射电子显微镜的观察。
Abstract Biocrystals of calcite are frequent as they are employed by many phylae of organisms in shells, eggshells, teeth, spines or sensoric apparatus. The calcite phase in these materials occurs in a range of constitutions, from polycrystalline fabrics to “single-crystals”. We demonstrate systematics of calcite biocrystal architectures, from the hybrid composite mesocrystal fibres of brachiopod and mollusc shells, via the submillimeter-sized hybrid composite crystal aggregates formed by mesocrystal fibres with both morphological co-orientation and lattice co-oriäentation, to more complex purpose-oriented multiplex äcomposite crystals of echinoderm teeth, which feature a high degree of single-crystal-like 3D orientational correlation of microstructural elements of different morphology and composition. These systematics rely on observations by electron backscatter diffraction (EBSD) and TEM.