Manipulation and Separation of Particles of Metal Oxides by Dielectrophoresis

Chemical Research in Chinese Universities ›› 2010, Vol. 26 ›› Issue (4): 645-648.

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Manipulation and Separation of Particles of Metal Oxides by Dielectrophoresis

CHEN Hui-ying^1* , ZHU Yue-lin¹, LIU Yan², ZHANG He-teng², YU Le² and LI Di¹

1. School of Material Science and Engineering, Beihang University, Beijing 100083, P. R. China;
2. College of Life and Environmental Science, Minzu University of China, Beijing 100081, P. R. China

Received:2009-08-17 Revised:2009-11-02 Online:2010-07-25 Published:2010-10-01
Contact: CHEN Hui-ying, E-mail: huiyingrchen@yahoo.com.cn
Supported by:
Supported by the National Natural Science Foundation of China(No.90305011) and the “985” Foundation of Central University for Nationalities(No.cun985-3-3).

Abstract

Abstract: With the development of nanotechnology, the separation and manipulation of micro-nano-particles have become a research focus in the field of nano-materials. Dielectrophoresis(DEP) is a non-contact technology for the separation and manipulation of micro-nano-particles. Here is reported the design and fabrication of a DEP based microchip with microelectrode arrays for capturing micro-particles of inorganic oxides in petroleum. The DEP behavior of micro-particles of inorganic oxides in oil media was explored via this microchip. The microchip shows relatively a good DEP response to inorganic oxides in oil media. Furthermore, much more factors were explored such as frequency(Hz), and particle size(μm), as well as metal valence. As a conclusion, the best frequency is 50 Hz. It is expected to capture particles with different sizes or separate different oxide particles by regulating DEP conditions. Thus, a new method could be established for the separation and purification particles of different oxides, as well as the separation and manipulation of an oxide with different particle sizes.

Key words: Dielectrophoresis, Microchip, Inorganic metal oxide, Separation

CHEN Hui-ying* , ZHU Yue-lin, LIU Yan, ZHANG He-teng, YU Le and LI Di. Manipulation and Separation of Particles of Metal Oxides by Dielectrophoresis[J]. Chemical Research in Chinese Universities, 2010, 26(4): 645-648.

References

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Manipulation and Separation of Particles of Metal Oxides by Dielectrophoresis

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