Orientation and surface activity of Janus particles at fluid-fluid interfaces

doi:10.1063/1.4897185

CORC > 化学研究所 > 中国科学院化学研究所

	Orientation and surface activity of Janus particles at fluid-fluid interfaces
	Gao, Hui-Min 1; Lu, Zhong-Yuan 2; Liu, Hong 2; Sun, Zhao-Yan 1; An, Li-Jia 1
刊名	JOURNAL OF CHEMICAL PHYSICS
	2014-10-07
卷号	141 期号:13
ISSN号	0021-9606
DOI	10.1063/1.4897185
英文摘要	We study the influence of shape of Janus particles on their orientation and surface activity at fluid-fluid interfaces via molecular dynamics simulations. The Janus particles are characterized by two regions with different wettability divided along their major axes. Three types of Janus particles are considered: Janus spheres, Janus rods, and Janus disks. We find that Janus spheres and Janus rods prefer one orientation at the interface, regardless of the surface property. In contrast, Janus disks can adopt one of two orientations when adhered to a fluid-fluid interface: one orientation corresponds to the equilibrium state and the other is a kinetically trapped metastable state. The orientation of Janus disks strongly depends on the disk characteristics, such as their size, aspect ratio, and surface property. Furthermore, we find that changes in the shape of Janus particles strongly influence the interfacial tension at the fluid-fluid interface. According to the time evolution of the interfacial tension, the adsorption of Janus particles is characterized by three adsorption stages based on different surface activities and adsorption kinetics depending on the particle shape. (C) 2014 AIP Publishing LLC.
语种	英语
出版者	AMER INST PHYSICS
WOS记录号	WOS:000343872800064
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/51249]
专题	中国科学院化学研究所
通讯作者	Gao, Hui-Min
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Jilin Univ, State Key Lab Theoret & Computat Chem, Inst Theoret Chem, Changchun 130023, Peoples R China
推荐引用方式 GB/T 7714	Gao, Hui-Min,Lu, Zhong-Yuan,Liu, Hong,et al. Orientation and surface activity of Janus particles at fluid-fluid interfaces[J]. JOURNAL OF CHEMICAL PHYSICS,2014,141(13).
APA	Gao, Hui-Min,Lu, Zhong-Yuan,Liu, Hong,Sun, Zhao-Yan,&An, Li-Jia.(2014).Orientation and surface activity of Janus particles at fluid-fluid interfaces.JOURNAL OF CHEMICAL PHYSICS,141(13).
MLA	Gao, Hui-Min,et al."Orientation and surface activity of Janus particles at fluid-fluid interfaces".JOURNAL OF CHEMICAL PHYSICS 141.13(2014).