Journal
NANO-MICRO LETTERS
Volume 8, Issue 3, Pages 270-281Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s40820-016-0087-3
Keywords
Electrostatic tweezers; Charged particles; Coulomb potential well; Manipulation; Trap
Funding
- National Natural Science Foundation of China (NSFC) [11374016]
- MOST of China [2012CB932702, 2011CB933002]
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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.
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