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3D focusing of nanoparticles in microfluidic channels

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3 Author(s)
H. Morgan ; Dept. of Electron. & Electr. Eng., Univ. of Glasgow, UK ; D. Holmes ; N. G. Green

Dynamic focusing of particles can be used to centre particles in a fluid stream, ensuring the passage of the particles through a specified detection volume. This paper describes a method for focusing nanoparticles using dielectrophoresis. The method differs from other focusing methods in that it manipulates the particles and not the fluid. Experimental focusing is demonstrated for a range of different particle types, and discussed in terms of the operational limits of the device. Dynamic numerical simulations of the particle motion in the device are presented and compared with the experimental results. The potential of the device for nanoparticle control and manipulation in microfluidic chips is discussed.

Published in:

IEE Proceedings - Nanobiotechnology  (Volume:150 ,  Issue: 2 )