In situ X-ray scattering observation of two-dimensional interfacial colloidal crystallization
Wu, LL; Wang, X; Wang, G; Chen, G
2018
发表期刊NATURE COMMUNICATIONS
ISSN2041-1723
卷号9页码:-
文章类型期刊论文
摘要Charged colloids at interfaces hold such a simple configuration that their interactions are supposed to be fully elucidated in the framework of classical electrostatics, yet the mysterious existence of attractive forces between these like-charged particles has puzzled the scientific community for decades. Here, we perform the in situ grazing-incidence small-angle X-ray scattering study of the dynamic self-assembling process of two-dimensional interfacial colloids. This approach allows simultaneous monitoring of the in-plane structure and ordering and the out-of-plane immersion depth variation. Upon compression, the system undergoes multiple metastable intermediate states before the stable hexagonal close-packed monolayer forms under van der Waals attraction. Remarkably, the immersion depth of colloidal particles is found to increase as the interparticle distance decreases. Numerical simulations demonstrate the interface around a colloid is deformed by the electrostatic force from its neighboring particles, which induces the long-range capillary attraction.
关键词Charged Particles Liquid Interfaces Electric-field Attraction Crystals
DOI10.1038/s41467-018-03767-y
收录类别SCI
语种英语
WOS记录号WOS:000429399900008
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/29047
专题中科院上海应用物理研究所2011-2018年
作者单位1.Wu, LL
2.Wang, X
3.Wang, G
4.Chen, G
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GB/T 7714
Wu, LL,Wang, X,Wang, G,et al. In situ X-ray scattering observation of two-dimensional interfacial colloidal crystallization[J]. NATURE COMMUNICATIONS,2018,9:-.
APA Wu, LL,Wang, X,Wang, G,&Chen, G.(2018).In situ X-ray scattering observation of two-dimensional interfacial colloidal crystallization.NATURE COMMUNICATIONS,9,-.
MLA Wu, LL,et al."In situ X-ray scattering observation of two-dimensional interfacial colloidal crystallization".NATURE COMMUNICATIONS 9(2018):-.
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