A microfluidic-based method for micro particle trapping and positioning
by Qin Zhang; Chenying Xu; Weijun Huang; Hisayuki Aoyama
International Journal of Mechatronics and Automation (IJMA), Vol. 5, No. 2/3, 2015

Abstract: Micro particle trapping and positioning is widely used in bioengineering, pharmaceuticals, micro-assembly, chemical analysis, and material performance evaluation. In this paper, we present a non-contact microfluidic-based method for trapping and positioning micro particles. With this method, two identical microtubes are symmetrically aligned on both sides of a particle, which squirt inside fluid to produce a flow field. The particle is enveloped by a pressure surface which enables trapping and clamping the particle. This method is valid for micron-sized particles of arbitrary shapes. The trapping and positioning mechanism is analysed and the feasibility of the method is verified by experiments.

Online publication date: Mon, 18-Apr-2016

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