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A highly reliable integrated PDMS interconnector with a long cast flange for microfluidic systems

Chang, Hong-long and Zhang, Feng and Ding, Ji-liang and Chen, Fang-lu and Hong, Shui-jin and Kraft, Michael and Yuan, Wei-zheng (2012) A highly reliable integrated PDMS interconnector with a long cast flange for microfluidic systems. Microsystem Technologies, 18 (6). pp. 723-730. ISSN 0946-7076.

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This paper presents a highly reliable macro to micro domain interconnection technology for microfluidic applications using Polydimethylsiloxane (PDMS) casting techniques. Characteristic to the interconnectors are long flanges fabricated in the PDMS film; therefore the contact area between PDMS and tubes is considerably increased compared to other interconnection technologies. Thus, both glass capillaries and Polytetrafluoroethylene (PTFE) tubes can be held in position very reliably and rigidly. To test the reliability of the interconnectors, PTFE tubes were successfully connected to microfluidic chips without the aid of any liquid adhesives. Both leakage and pull-out tests demonstrated the functionality and reliability of the PDMS interconnectors; no leakage was detected under a working pressure up to 400 kPa. A pull-out test yielded a pull-out force of 22.45 N. Furthermore, once a casting mould is fabricated, it can be re-used as a template repeatedly achieving a low cost technology and making it suitable for batch production.

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Additional Information:© 2012 Springer-Verlag. Received: 12 December 2011; Accepted: 31 March 2012; Published online: 18 April 2012. The authors gratefully acknowledge Chinese National Science Foundation’s financial support (No. 60976087) and the support from Chinese New Century Excellent Talents in University (NCET-10-0077).
Funding AgencyGrant Number
Chinese National Science Foundation60976087
Chinese New Century Excellent Talents in UniversityNCET-10-0077
Issue or Number:6
Record Number:CaltechAUTHORS:20120620-094601427
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Official Citation:Chang, H., Zhang, F., Ding, J. et al. Microsyst Technol (2012) 18: 723. doi:10.1007/s00542-012-1507-z
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:31977
Deposited By: Jason Perez
Deposited On:20 Jun 2012 20:06
Last Modified:03 Oct 2019 03:56

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