Session V37: Focus Session: Microfluidic Physics IV: Particles, Drops, and Mixing
11:15 AM–2:15 PM, Thursday, March 24, 2005
LACC Room: 512
Sponsoring Unit:
DFD
Chair: Darren Link, Rain Dance Technologies
Abstract ID: BAPS.2005.MAR.V37.16
Abstract: V37.00016 : Dielectrophoretic processes in a linear electrode array
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Abstract
Authors:
Frederic Bottausci
(University of California, Santa Barbara)
Yanting Zhang
(University of California, Santa Barbara)
Igor Mezic
(University of California, Santa Barbara)
We present experiments on dielectrophoretic (DEP) separation and trapping performed in a titanium-based microchannel linear electrode array. The device is designed to allow for effects driven by nonhomogeneities in electric-field magnitude driven (p-DEP and n-DEP) and nonhomogeneities in electric-field phase-driven (traveling wave) DEP. It is also capable of inducing multi-frequency DEP, in contrast with most of the previous, single-frequency, designs. We show that fluid flow effects are substantial and can affect the particle motion in a positive (enhanced trapping) and negative (trapping when separation is desired) way. We discuss the advantages of multi-frequency dielectrophoretic handling of bioparticles.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2005.MAR.V37.16