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A poly(dimethylsiloxane)-coated flexible mold for nanoimprint lithography

Title
A poly(dimethylsiloxane)-coated flexible mold for nanoimprint lithography
Authors
Lee N.Y.Kim Y.S.
Ewha Authors
김연상
Issue Date
2007
Journal Title
Nanotechnology
ISSN
0957-4484JCR Link
Citation
vol. 18, no. 41
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
In this paper, we introduce an anti-adhesion poly(dimethylsiloxane) (PDMS)-coated flexible mold and its applications for room-temperature imprint lithography. The flexible mold is fabricated using an ultraviolet-curable prepolymer on a flexible substrate, and its surface is passivated with a thin layer of PDMS to impart an anti-adhesion property. The highly flexible mold enables conformal contact with a substrate on which a low-viscosity polymer resist is spin-cast in a thin layer. Large-area imprinting is then realized at room temperature under significantly reduced pressure. The mold was durable even after repetitive imprinting of over 200 times. Also, we show a double imprinting on the substrate with a PDMS-coated replica polymeric mold having 500 nm line patterns. This enables the formation of matrix patterns with varying feature heights in less than 7 min. © IOP Publishing Ltd.
DOI
10.1088/0957-4484/18/41/415303
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자연과학대학 > 화학·나노과학전공 > Journal papers
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