Synchrotron radiation phase-contrast computed tomography study on self-assembly of polystyrene colloidal crystals via solvent evaporation
Fu, YA; Xie, HL; Deng, B; Du, GH; Xiao, TQ; Fu, YA (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China.
2015
发表期刊COLLOID JOURNAL
ISSN1061-933X
卷号77期号:6页码:795—801
文章类型期刊文献
摘要The colloidal crystals of polystyrene (PS) spheres were assembled from the emulsion of PS by an in situ solvent evaporation method. The local internal 3D structure of the fabricated colloidal crystals was noninvasively characterized with synchrotron radiation phase-contrast computed tomography. The satisfactory contrast difference was obtained and the shapes of the spheres were clearly reconstructed. Based on the slice images, the two-stage mechanism of crystallization process for in situ evaporation was suggested. In the initial stage, stable nucleation and growth result in formation of an ordered face-centered cubic structure with the sphere volume fraction 70.2%, which is very close to the maximum sphere packing volume fraction 74%. In the second stage, the sphere concentration in suspension decreased too much to support an adequate sphere transfer through the solvent flux to the growth front. The transformation from square to hexagonal lattice did not therefore complete under the same evaporation rate. This incompleteness results in formation of local ordered structure with randomly arranged hexagonal and square packing with a slightly low volume fraction of 68.41%.
关键词Opal Photonic Crystals Quantitative-analysis Spheres Fabrication Templates Retrieval Particles Defects Object Arrays
语种英语
WOS记录号WOS:000365237500015
引用统计
被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/25062
专题中科院上海应用物理研究所2011-2018年
通讯作者Fu, YA (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201204, Peoples R China.
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Fu, YA,Xie, HL,Deng, B,et al. Synchrotron radiation phase-contrast computed tomography study on self-assembly of polystyrene colloidal crystals via solvent evaporation[J]. COLLOID JOURNAL,2015,77(6):795—801.
APA Fu, YA,Xie, HL,Deng, B,Du, GH,Xiao, TQ,&Fu, YA .(2015).Synchrotron radiation phase-contrast computed tomography study on self-assembly of polystyrene colloidal crystals via solvent evaporation.COLLOID JOURNAL,77(6),795—801.
MLA Fu, YA,et al."Synchrotron radiation phase-contrast computed tomography study on self-assembly of polystyrene colloidal crystals via solvent evaporation".COLLOID JOURNAL 77.6(2015):795—801.
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