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Janus particle microshuttle: 1D directional self-propulsion modulated by AC electrical field
Chen, JL; 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:31325
ISSN2158-3226
AbstractA catalytic Janus particle is capable of gaining energy from the surrounding fuel solution to drive itself to move continuously, which has an important impact in different fields, especially the field of micro-systems. However, the randomness of self-propulsion at the microscale restricts its use in practice. Achieving a directed self-propelled movement would greatly promote the application of the Janus particle. We proved experimentally that an AC electric field was an effective way to suppress Brownian motion and control the direction of self-propelled movement. The self-propulsion and dielectrophoretic response of a 2 mu m Janus particle were observed and the related basic data were collected. Interdigital electrodes, 20 mu m in width, were energized in pulsed style to modulate the self-propulsion, which resulted in a shuttle-style motion in which a single Janus particle moved to and fro inside the strip electrode. The change of direction depends on its unique position: the catalyst side is always pointed outward and the orientation angle relative to the electrode is about 60 degrees. Numerical simulation also proved that this position is reasonable. The present study could be beneficial with regard to self-propulsion and AC electrokinetics of the Janus particle. (C) 2014 Author(s).
Subject AreaScience & Technology - Other Topics ; Materials Science ; Physics
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000334213700026
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 No. 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 with using their microfabrication facilities.
DepartmentLNM微纳米流体力学
ClassificationQ3
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48840
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
Chen, JL,Zhang, HY,Zheng X,et al. Janus particle microshuttle: 1D directional self-propulsion modulated by AC electrical field[J]. AIP ADVANCES,2014,4(3):31325.
APA Chen, JL,Zhang, HY,郑旭,崔海航,&Cui, HH .(2014).Janus particle microshuttle: 1D directional self-propulsion modulated by AC electrical field.AIP ADVANCES,4(3),31325.
MLA Chen, JL,et al."Janus particle microshuttle: 1D directional self-propulsion modulated by AC electrical field".AIP ADVANCES 4.3(2014):31325.
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