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A Microfluidic-based Hydrodynamic Trap for Single Particles
Published on: January 21, 2011
Trapping microfluidic drops in wells of surface energy
Rémi Dangla1, Sungyon Lee, Charles N Baroud
1LadHyX and Department of Mechanics, Ecole Polytechnique, CNRS, 91128 Palaiseau Cedex, France.
Physical Review Letters
|October 27, 2011
Abstract:
A small hole etched in the top of a wide microchannel creates a well of surface energy for a confined drop. This produces an attractive force F(γ) equal to the energy gradient, which is estimated from geometric arguments. We use the drag F(d) from an outer flow to probe the trapping mechanism. When F(d)
