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Proceedings Paper

Examination of glass-silicon and glass-glass bonding techniques for microfluidic systems
Author(s): Norman F. Raley; J. Courtney Davidson; Joseph W. Balch
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Paper Abstract

We report here on the results of experiments concerning particular bonding processes potentially useful for ultimate miniaturization of microfluidic systems. Direct anodic bonding of continuous thin pyrex glass of 250 micrometers thickness to silicon substrates gives multiple, large voids in the glass. Etchback of thick glass of 1200 micrometers thickness bonded to silicon substrates gives thin continuous glass layers of 189 micrometers thickness without voids over areas of 5 cm X 12 cm. Glass was also successfully bonded to glass by thermal bonding at 800 degrees C over a 5 cm X 7 cm area. Anticipated applications include microfabricated DNA sequencing, flow injection analysis, and liquid and gas chromatography microinstruments.

Paper Details

Date Published: 19 September 1995
PDF: 6 pages
Proc. SPIE 2639, Micromachining and Microfabrication Process Technology, (19 September 1995); doi: 10.1117/12.221298
Show Author Affiliations
Norman F. Raley, Lawrence Livermore National Lab. (United States)
J. Courtney Davidson, Lawrence Livermore National Lab. (United States)
Joseph W. Balch, Lawrence Livermore National Lab. (United States)


Published in SPIE Proceedings Vol. 2639:
Micromachining and Microfabrication Process Technology
Karen W. Markus, Editor(s)

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