Huang Bo-Han, Wang Chun-Chieh, Liao Chen-Hong, Wu Pu-Wei, Song Yen-Fang
Graduate Program for Science and Technology of Accelerator Light Source, National Chiao Tung University, Hsinchu 30010, Taiwan, ROC.
National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan, ROC.
J Colloid Interface Sci. 2014 Jul 15;426:199-205. doi: 10.1016/j.jcis.2014.03.063. Epub 2014 Apr 2.
A nondestructive tomographic technique was used to determine the crystallographic information of colloidal crystals comprising of polystyrene (PS) microspheres, as well as their silver inverse opals. The properties of the colloidal crystals, such as defects, grain size, grain boundaries, stacking sequence, and grain orientation, were determined using the full field transmission X-ray microscopy (TXM) with a spatial resolution of 50 nm. The PS microspheres (500-750 nm) which underwent a vertical electrophoresis process to form a face-centered cubic (fcc) close-packed structure with an ABCABC packing sequence. In addition, the colloidal crystal exhibited multiple grains, and an orientation variation of 6.1° in the stacking direction between two neighboring grains.
一种非破坏性层析成像技术被用于确定由聚苯乙烯（PS）微球及其银反蛋白石组成的胶体晶体的晶体学信息。使用空间分辨率为50纳米的全场透射X射线显微镜（TXM）确定了胶体晶体的特性，如缺陷、晶粒尺寸、晶界、堆积序列和晶粒取向。500 - 750纳米的PS微球经过垂直电泳过程，形成了具有ABCABC堆积序列的面心立方（fcc）密堆积结构。此外，胶体晶体呈现出多个晶粒，且两个相邻晶粒在堆积方向上的取向变化为6.1°。
