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Limits to Nanopatterning of Fluids on Surfaces in Soft Lithography

✍ Scribed by Jens A. Wigenius; Mahiar Hamedi; Olle Inganäs

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
599 KB
Volume
18
Category
Article
ISSN
1616-301X

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✦ Synopsis

Abstract

Soft lithographic microcontact printing using the residual polydimethylsiloxane (PDMS) found in elastomeric PDMS stamps is demonstrated to lead to unstable prints with sub‐micrometer dimensions. The statics and dynamics of the process have been followed with time‐resolved atomic force microscopy, imaging ellipsometry, water contact angle measurement, and optical diffraction. It is proposed that this instability places a fundamental limitation on patterning by macromolecular fluids, which is of general relevance to soft lithography and nanoimprint lithography with low viscosity polymers.

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