Janus Steps 2 (IMAGE)

DOE/Argonne National Laboratory

Janus Steps 2

Caption

a) Water drop brought into contact with covered portion of the unmodified membrane surface is manipulated laterally with the needle to the Al2O3-modified region, at which point the water droplet rapidly spreads and is imbibed by the Janus membrane. b) Staining with Coomasie Blue dye reveals the lateral pattern of the Janus modification. Scale bar is 10 mm. c) A water droplet deposited on an inclined Janus membrane rolls on the unmodified hydrophobic region only to be immobilized by a 10 mm Janus-modified region. These images were taken on the dataphysics OCA25 system at the University of Chicago.

Credit

The University of Chicago

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