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Proceedings Paper

Surface effects at polymeric interfaces in capillary driving process
Author(s): Ilenia Viola; Anna Zocco; Alessandra Fischetti; Barbara Foglieni; Laura Cremonesi; Maurizio Ferrari; Roberto Cingolani; Giuseppe Gigli
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Paper Abstract

The growing interest in biological micro-array and Lab-on-Chip (LOC) is justified by the possibility of reducing the sample volume, processing time and costs. By means microfluidics seems to be the prevalent tool for the integration of manifold processes in miniaturized devices. Anyway at a sub-millimeter scale the liquid behavior is affected by geometric confinement and wetting properties. In order to confine the liquid sample inside the LOC buried channels we have performed the sealing by poly(dimethylsiloxane)~(PDMS), a silicon-based bi-component elastomer. The filling dynamics changes at changing of the polymer mixing ratio of the pre-polymer and the curing agent. In fact, a different concentration of cross-linker modifies the elastic, adhesion and wettability properties of the cover-slip

Paper Details

Date Published: 1 July 2005
PDF: 10 pages
Proc. SPIE 5836, Smart Sensors, Actuators, and MEMS II, (1 July 2005); doi: 10.1117/12.608302
Show Author Affiliations
Ilenia Viola, National Nanotechnology Laboratory of INFM (Italy)
Anna Zocco, STMicroelectronics (Italy)
Alessandra Fischetti, STMicroelectronics (Italy)
Barbara Foglieni, IRCCS H. San Raffaele (Italy)
Laura Cremonesi, IRCCS H. San Raffaele (Italy)
Maurizio Ferrari, IRCCS H. San Raffaele (Italy)
Roberto Cingolani, National Nanotechnology Laboratory of INFM (Italy)
Giuseppe Gigli, National Nanotechnology Laboratory of INFM (Italy)

Published in SPIE Proceedings Vol. 5836:
Smart Sensors, Actuators, and MEMS II
Carles Cane; Jung-Chih Chiao; Fernando Vidal Verdu, Editor(s)

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