Trapping and Driving Individual Charged Micro-particles in Fluid with an Electrostatic Device

A variety of micro-tweezers techniques, such as optical tweezers, magnetic tweezers, and dielectrophoresis technique, have been applied intensively in precise characterization of micro/nanoparticles and bio-molecules. They have contributed remarkably in better understanding of working mechanisms of...

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Bibliographic Details
Published in:Nano-micro letters 2016, Vol.8 (3), p.270-281
Main Authors: Xu, Jingjing, Lei, Zijing, Guo, Jingkun, Huang, Jie, Wang, Wei, Reibetanz, Uta, Xu, Shengyong
Format: Article
Language:English
Subjects:
Electrostatic
Engineering
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
particles
Coulomb
potential
tweezers
Charged
well
Manipulation
Trap
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Summary:A variety of micro-tweezers techniques, such as optical tweezers, magnetic tweezers, and dielectrophoresis technique, have been applied intensively in precise characterization of micro/nanoparticles and bio-molecules. They have contributed remarkably in better understanding of working mechanisms of individual sub-cell organelles, proteins, and DNA. In this paper, we present a controllable electrostatic device embedded in a microchannel, which is capable of driving,trapping, and releasing charged micro-particles suspended in microfluid, demonstrating the basic concepts of electrostatic tweezers. Such a device is scalable to smaller size and offers an alternative to currently used micro-tweezers for application in sorting, selecting, manipulating, and analyzing individual micro/nanoparticles. Furthermore, the system offers the potential in being combined with dielectrophoresis and other techniques to create hybrid micro-manipulation systems.
ISSN:2150-5551
2311-6706
2150-5551
DOI:10.1007/s40820-016-0087-3