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A miniaturised integrated QCM-based electronic nose microsystem

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5 Author(s)
Frisk, T. ; R. Inst. of Technol., Stockholm ; Eng, L. ; Shaohua Guo ; van der Wijngaart, W.
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We designed, fabricated and successfully tested an integrated miniaturised quartz crystal microbalance (QCM) based electronic nose microsystem. The microsystem is an assembly of four parts: 1. a micromachined gas-liquid interface with integrated fluid channels and electrical conductors, 2. an anisotropically conductive double-sided adhesive film, 3. a QCM crystal and 4. a polymer cap with fluid and electrical ports. The choice of the multifunctional materials and the geometric features of the four-component microsystem allow a functional integration of a QCM crystal, electrical contacts, fluidic contacts and a sample interface in a single system with minimal assembly effort, a potential for low-cost manufacturing, and a few orders of magnitude reduction in system size (12* 12*4 mm3) and weight compared to commercially available instruments. The system detected ecstasy in the 100 ng range within 30 seconds.

Published in:

Micro Electro Mechanical Systems, 2007. MEMS. IEEE 20th International Conference on

Date of Conference:

21-25 Jan. 2007

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