Increasing the trapping efficiency of particles in microfluidic planar platforms by means of negative dielectrophoresis.
We present a novel planar electrode geometry in which particles (typically 10 microm in diameter) are focused near a defined surface before being trapped using negative dielectrophoresis. The focusing element can deflect particles having speeds up to hundreds of micrometers per second. This trapping configuration results in improved trapping yields and a decrease in overall reagent consumption. Particles are trapped dynamically while flowing in a microfluidic channel.
Gielen
Fabrice
F
Department of Chemistry, Institute of Biomedical Engineering, and Chemical Biology Centre, Imperial College London, South Kensington, London, SW7 2AZ, United Kingdom.
deMello
Andrew J
AJ
Cass
Tony
T
Edel
Joshua B
JB
D003198:Computer Simulation; D004586:Electrophoresis; D007477:Ions / Q000737:chemistry; D044085:Microfluidics; D013499:Surface Properties
D007477:Ions