Matrix-mediated formation of hierarchically structured SnO crystals as intermediates between single crystals and polycrystalline aggregates.
Matrix-mediated formation of hierarchically structured SnO crystals as intermediates between single crystals and polycrystalline aggregates.
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DOI：
10.1021/la800955r
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发表时间：
2008-07
期刊：
影响因子：
--
通讯作者：
Hiroaki Uchiyama;H. Imai
中科院分区：
文献类型：
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作者：
Hiroaki Uchiyama;H. Imai
在Sn 6 O 4（OH）4基质中生长的SnO晶体呈现出分级结构，如阶梯双锥、堆叠网格和棒状结构，这些结构并不属于经典的晶体形态分类。发现由小的建筑单元组成的复杂结构是通过堆叠和/或分支生长产生的，伴随着单元尺寸的减小和组装中晶体对称性的退化。这种特殊的形态演变被认为是通过增加结晶的驱动力在丰富的前体物质的存在下提供的矩阵。
Crystalline SnO grown in a Sn 6O 4(OH) 4 matrix exhibited hierarchical architectures, such as stepped bipyramids, stacked meshes, and rosettes, which were not categorized into the classical assortment of crystal morphologies. The complex architectures consisting of small building units were found to be produced through stacking and/or branching growth accompanied with a decrease in the unit size and degradation of the crystallographic symmetry in their assembly. This particular morphological evolution is presumed to be achieved by increasing the driving force of crystallization in the presence of abundant precursor species supplied from the matrix.