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Issue 20, 2009
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Rapid replication of master structures by double casting with PDMS

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Abstract

We present a simple method for fast and precise replication of microfluidic master structures for moulding or soft embossing by double casting of microstructured masters with polydimethylsiloxane (PDMS). The significant achievement is a simple approach to inverse a given microstructure multiple times by means of PDMS-based soft lithography utilising hydroxypropylmethylcellulose (HPMC) as non texturing release agent. A series of PDMS copies have been generated from different silicon layouts with excellent reproducibility and precision, even submicron structures were well reproduced. The replicas were successfully applied in hot embossing and soft lithography of microfluic devices. Hence, we believe this technique is ideally suited for the economic replication of precious master structures (master sharing) commonly used in soft lithography and hot embossing.

Graphical abstract: Rapid replication of master structures by double casting with PDMS

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Article information


Submitted
09 Mar 2009
Accepted
29 Jun 2009
First published
11 Jul 2009

Lab Chip, 2009,9, 3000-3002
Article type
Technical Note

Rapid replication of master structures by double casting with PDMS

L. Gitlin, P. Schulze and D. Belder, Lab Chip, 2009, 9, 3000
DOI: 10.1039/B904684D

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