Journal
SENSORS AND ACTUATORS A-PHYSICAL
Volume 84, Issue 1-2, Pages 103-108Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0924-4247(99)00346-5
Keywords
bonding; sandblasting; pressure; low temperature
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We introduce two new low temperature bonding technologies for the assembly of microstructured glass substrates for the realisation of microchannels for miniaturised chemical analysis applications. A first method consists of a proper cleaning of the two glass surfaces, followed by a simple epoxy gluing process at 90 degrees C. In a second method, direct bonding is obtained just by exposing the glass stack to a high pressure (up to 50 MPa) in the 100-200 degrees C temperature range. We obtain bonding strengths as high as 10 MPa, higher than the best values obtained by HF-assisted or plasma-assisted bonding. For the realisation of the microchannels, we introduce, besides the well-known HF-etching technology, two simple alternative methods, namely, sawing and micropowder blasting. (C) 2000 Elsevier Science S.A. All rights reserved.
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