Microfluidic impedance spectroscopy flow cytometer: Particle size calibration

This paper presents a microfabricated impedance spectroscopy flow cytometer which permits rapid and easy dielectric characterization of cells as they flow in a microchannel. Both a simple theoretical model and a finite element simulation show that the effects of particle size dominate the entire spectrum. Dielectrophoretic forces are used to focus polystyrene beads along the centerline of the channel and decrease the spread in signal amplitude. Measurements of the beads show that size differences of less than 1 gm diameter can be discriminated.


Published in:
MEMS 2004: 17TH IEEE INTERNATIONAL CONFERENCE ON MICRO ELECTRO MECHANICAL SYSTEMS, TECHNICAL DIGEST, 343-346
Presented at:
17th IEEE International Conference on Micro Electro Mechanical Systems, Maastricht, NETHERLANDS, JAN 25-29, 2004
Year:
2004
Keywords:
Laboratories:




 Record created 2005-09-13, last modified 2018-03-17


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