BIOLOGICAL-CONTROL OF CRYSTAL TEXTURE - A WIDESPREAD STRATEGY FOR ADAPTING CRYSTAL PROPERTIES TO FUNCTION
BIOLOGICAL-CONTROL OF CRYSTAL TEXTURE - A WIDESPREAD STRATEGY FOR ADAPTING CRYSTAL PROPERTIES TO FUNCTION
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DOI：
10.1126/science.259.5096.776
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发表时间：
1993-02-05
期刊：
影响因子：
56.9
通讯作者：
ADDADI, L
中科院分区：
文献类型：
--
作者：
BERMAN, A;HANSON, J;ADDADI, L
用高分辨率同步辐射X射线研究了来自四个门的生物体的各种矿化组织中方解石晶体的纹理。在分类组之间观察到相干长度和角展的显着差异。从多晶骨骼合奏晶体更完美的功能比那些单晶元素。海胆和软体动物方解石晶体的晶体结构上观察到不同的各向异性效应，而没有发现有孔虫，Patellina，和控制方解石晶体。这些结果表明，在不同的生物体中的晶体纹理的操纵是在生物控制下，在某些组织中的晶体纹理是适应功能。更好地了解这种明显普遍的生物现象可能会为改进含晶体的合成材料提供新的见解。
Textures of calcite crystals from a variety of mineralized tissues belonging to organisms from four phyla were examined with high-resolution synchrotron x-ray radiation Significant differences in coherence length and angular spread were observed between taxonomic groups. Crystals from polycrystalline skeletal ensembles were more perfect than those that function as single-crystal elements. Different anisotropic effects on crystal texture were observed for sea urchin and mollusk calcite crystals, whereas none was found for the foraminifer, Patellina, and the control calcite crystals. These results show that the manipulation of crystal texture in different organisms is under biological control and that crystal textures in some tissues are adapted to function. A better understanding of this apparently widespread biological phenomenon may provide new insights for improving synthetic crystal-containing materials.