CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
Three-dimensional structure of polystyrene colloidal crystal by synchrotron radiation X-ray phase-contrast computed tomography
Fu, YN; Xie, HL; Deng, B; Du, GH; Chen, RC; Xiao, TQ; fuyanan@sinap.ac.cn
2014
Source PublicationAPPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
ISSN0947-8396
Volume115Issue:3Pages:781—790
AbstractColloidal crystal with long-range ordered structure has attracted great attention for their applications in various fields. Although perfect colloidal crystals have been achieved by some fabrications for utilization, little is known about their exact structures and internal defects. In this study, we use synchrotron radiation (SR) phase-contrast computed tomography (CT) to noninvasively access the internal structure of polystyrene (PS) colloidal crystals in three dimensions (3D). The phase-attenuation duality Paganin algorithm phase retrieval was employed to achieve a satisfactory contrast and outline of the spheres. After CT reconstruction, the positions of individual PS particles and structural defects are identified in three dimensions, and the local crystal structure is revealed. Further quantitative analysis of the void system in colloidal crystal illustrates that single voids can be mostly attributed to tetrahedron void of sphere close packing, but the interconnected voids with large volume induce a sphere volume fraction of 59.39 % that reflects a metastable glass behavior of colloidal crystal arrangement. The void orientation result reveals that the 3D close-packing difficulty mainly lies in the stacking of interlayer.
KeywordOpal Photonic Crystals Visualization Fabrication Retrieval Spheres Object Image
Indexed BySCI
Language英语
WOS IDWOS:000336362400011
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/14511
Collection中科院上海应用物理研究所2011-2019年
Corresponding Authorfuyanan@sinap.ac.cn
Recommended Citation
GB/T 7714
Fu, YN,Xie, HL,Deng, B,et al. Three-dimensional structure of polystyrene colloidal crystal by synchrotron radiation X-ray phase-contrast computed tomography[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,2014,115(3):781—790.
APA Fu, YN.,Xie, HL.,Deng, B.,Du, GH.,Chen, RC.,...&fuyanan@sinap.ac.cn.(2014).Three-dimensional structure of polystyrene colloidal crystal by synchrotron radiation X-ray phase-contrast computed tomography.APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING,115(3),781—790.
MLA Fu, YN,et al."Three-dimensional structure of polystyrene colloidal crystal by synchrotron radiation X-ray phase-contrast computed tomography".APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING 115.3(2014):781—790.
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