Patterning Polymers by Micro-Fluid-Contact Printing

Equally sized and regularly spaced polymer dots can be produced by the new approach, based on microcontact printing, described here. It is shown that the printed dots are smaller than the protrusions of the stamp used and result from the transfer of polymer dot-like aggregates formed by a topographically controlled dewetting process (see Figure) of the polymer solution on the microstructured stamp surface.