Controlled Formation and Mixing of Two-Dimensional Fluids

Ilja Czolkos (1) , Yavuz Erkan (1) , Paul Dommersnes (1, 2) , Aldo Jesorka (1) , Owe Orwar (1, 2)

1 Chalmers University of Technology [Göteborg]
2 MSC - Matière et Systèmes Complexes

We introduce a novel technique for the controlled spreading and mixing of lipid monolayers from multilamellar precursors on surfaces covered by the hydrophobic epoxy resin SU-8. The lipid spreads as a monolayer as a result of the high surface tension between SU-8 and the aqueous environment. A micropatterned device with SU-8 lanes, injection pads, and mixing regions, surrounded by hydrophilic Au, was constructed to allow handling of lipid films and to achieve their mixing at controlled stoichiometry. Our findings offer a new approach to dynamic surface functionalization and decoration as well as surface-based catalysis and self-assembly.

Domaines: Biomécanique [physics.med-ph]

Ilja Czolkos, Yavuz Erkan, Paul Dommersnes, Aldo Jesorka, Owe Orwar. Controlled Formation and Mixing of Two-Dimensional Fluids. Nano Letters, 2007, 7 (7), pp.1980-1984. ⟨10.1021/nl070726u⟩. ⟨hal-00168742⟩