Patterning of polymers: precise channel stamping by optimizing wetting properties

Details Patterning of polymers: precise channel stamping by optimizing wetting properties Patterning of polymers: precise channel stamping by optimizing wetting properties

Aug 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004njph....6..111s&link_type=abstract

New Journal of Physics, Volume 6, Issue 1, pp. 111 (2004).

Physics

2

Scientific paper

Channel stamping is a soft lithography technique that can be used to fabricate small structures of polymeric materials. This technique is cheap and easy but a considerable drawback is the fact that reproduction of the patterns of the stamp is often imprecise due to the wetting properties of liquid and stamp. In this paper, we report on experiments that reveal the parameters governing the behaviour of liquids in grooves and on edges. Optimizing these parameters leads to better-quality channel-stamped structures and enables the design of sophisticated structured polymeric materials, allowing channels as small as about 100 nm to be fabricated. Moreover, we show that it is even possible to build up a freestanding three-dimensional structure by stamping line patterns on top of each other.

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