Two-dimensional microfluidics using circuits of wettability contrast.
We originally introduce a device to achieve monitored flows of Langmuir monolayers on predesigned wet circuits imprinted on a solid support. The hydrophilic track is first engraved in contact with a hydrophobically coated metallic plate that is fitted into a three-compartment Langmuir trough. Two different designs are tested to confirm flow stability and control. In particular and as a first utility, we measure the diffusion coefficient of a fluorescent probe using Y-junction geometry.
Burriel
Patricia
P
Departament de Química Física, Universitat de Barcelona, 08028 Barcelona, Catalunya, Spain.
Ignés-Mullol
Jordi
J
Claret
Josep
J
Sagués
Francesc
F