3D investigation on polystyrene colloidal crystals by floatage self-assembly with mixed solvent via synchrotron radiation x-ray phase-contrast computed tomography
Fu, YN; Xie, HL; Deng, B; Du, GH; Xiao, TQ
2017
发表期刊RADIATION PHYSICS AND CHEMISTRY
ISSN0969-806X
卷号135页码:49-54
文章类型期刊论文
摘要The floatage self-assembly method was introduced with mixed solvent as the medium of polystyrene sphere suspension to fabricate the colloidal crystal. The three dimensional (3D) void system of the colloidal crystal was noninvasively characterized by synchrotron radiation phase-contrast computed tomography, and the quantitative image analysis was implemented aiming to the polystyrene sphere colloidal crystal. Comparing with gravity sedimentation method, the three samples fabricated from floatage self-assembly with mixed solvents have the lowest porosity, and when ethylene glycol and water were mixed with ratio of 1:1, the lowest porosity of 27.49% could be achieved, that has been very close to the minimum porosity of ordered 3D monodisperse sphere array (26%). In single slices, the porosities and fractal dimension for the voids were calculated. The results showed that two factors would significantly influence the porosity of the whole colloidal crystal: the first deposited sphere layer's orderliness and the sedimentation speed of the spheres. The floatage self-assembly could induce a stable close-packing, process, resulted from the powerful nucleation force-lateral capillary force coupled with the mixed solvent to regulate the floating upward speed for purpose of matching the assembly rate.
关键词Colloidal Crystal Floatage Self-assembly Mixed Solvent Synchrotron Radiation Computed Tomography Phase-contrast
DOI10.1016/j.radphyschem.2017.02.050
收录类别SCI
语种英语
WOS记录号WOS:000399846700009
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/27239
专题中科院上海应用物理研究所2011-2018年
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Fu, YN,Xie, HL,Deng, B,et al. 3D investigation on polystyrene colloidal crystals by floatage self-assembly with mixed solvent via synchrotron radiation x-ray phase-contrast computed tomography[J]. RADIATION PHYSICS AND CHEMISTRY,2017,135:49-54.
APA Fu, YN,Xie, HL,Deng, B,Du, GH,&Xiao, TQ.(2017).3D investigation on polystyrene colloidal crystals by floatage self-assembly with mixed solvent via synchrotron radiation x-ray phase-contrast computed tomography.RADIATION PHYSICS AND CHEMISTRY,135,49-54.
MLA Fu, YN,et al."3D investigation on polystyrene colloidal crystals by floatage self-assembly with mixed solvent via synchrotron radiation x-ray phase-contrast computed tomography".RADIATION PHYSICS AND CHEMISTRY 135(2017):49-54.
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