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Simulation of diffusiophoresis force and the confinement effect of Janus particles with the continuum method
Wu ML(武美玲); Zhang, HY; Zheng X(郑旭); Cui HH(崔海航); Cui, HH (reprint author), Xian Univ Architecture & Technol, Xian 710055, Peoples R China.
Source PublicationAIP ADVANCES
2014-03
Volume4Issue:3Pages:31326
ISSN2158-3226
AbstractThe Janus particle is a special class of colloidal particle that has different surface characteristics on its two hemispheres. In the microsystem field, an interesting application is the Janus particle's self-propulsion. Diffusiophoresis (DFP) provides one possible mechanism to explain this phenomenon. In this paper, we used the continuum model to simulate DFP and to study the confinement effect of Janus particles travelling on the substrate. In the experiment, we noticed a special quasi-1D motion, in which the DFP force is dominant and particles move at a constant velocity within a short interval approximately along a straight line. This enables us to adopt a reference frame to numerically study the distributions of the flow field and concentration field and hence to evaluate the different forces. Because the confinement effect has a great influence on the magnitude of forces, the gaps were calculated accurately according to the force balance principle. Meanwhile, the fitting coefficients to match the experimental and numerical results were suggested. This result may help us to get a better understanding of self-propulsion and is also beneficial for designing a DFP-based micro-device. (C) 2014 Author(s).
Subject AreaScience & Technology - Other Topics ; Materials Science ; Physics
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000334213700027
Funding OrganizationThis work is funded by the National Natural Science Foundation of China (Grant Nos. 21005058, 11272322, and 11202219), the Specialized Research Fund for the Doctoral Programme of Higher Education of China (Grant Nos. 20106120120011), and the Shaanxi Provincial Department of Education Special Research Programme (Grant No. 11JK0530). The authors gratefully acknowledge Prof. Chen Li-Guo and Dr Xu Xiao-Wei from Soochow University for their kind help in using their microfabrication facilities.
DepartmentLNM微纳米流体力学
ClassificationQ3
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48841
Collection非线性力学国家重点实验室
Corresponding AuthorCui, HH (reprint author), Xian Univ Architecture & Technol, Xian 710055, Peoples R China.
Recommended Citation
GB/T 7714
Wu ML,Zhang, HY,Zheng X,et al. Simulation of diffusiophoresis force and the confinement effect of Janus particles with the continuum method[J]. AIP ADVANCES,2014,4(3):31326.
APA Wu ML,Zhang, HY,Zheng X,Cui HH,&Cui, HH .(2014).Simulation of diffusiophoresis force and the confinement effect of Janus particles with the continuum method.AIP ADVANCES,4(3),31326.
MLA Wu ML,et al."Simulation of diffusiophoresis force and the confinement effect of Janus particles with the continuum method".AIP ADVANCES 4.3(2014):31326.
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