title: Self-aligned micropatterns of bifunctional polymer surfaces with independent chemical and topographical contrast.
abstract: Bifunctional surfaces are micropatterned using a self-aligned, dual-purpose lithographic mask and pairs of conformally deposited iCVD polymers. A first layer is deposited, then physically masked and etched in oxygen plasma. A second layer is deposited with the mask still in place. Lift-off reveals the micropatterned surface. The thicknesses of the two layers are independently controlled so that the resultant surface displays both chemical and topographical contrast. The patterning scheme is independent of the polymers used and order of deposition. We use this scheme to create surfaces that spatially confine microcondensation, as well as chemical functionality. We also demonstrate microwells whose depth can be altered in response to a water stimulus.
authors: 77 Massachusetts Avenue Room 66-466, Cambridge, MA 02129, USA; 77 Massachusetts Avenue Room 66-354, Cambridge, MA 02129, USA.
authors: Salmaan H
authors: SH
authors: Baxamusa
authors: Laura
authors: L
authors: Montero
authors: Salvador
authors: S
authors: Borrós
authors: Karen K
authors: KK
authors: Gleason