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Proceedings Paper

Fully automated membrane dispensing in nanoliter scale and its application in sensor manufacturing
Author(s): Corinna Joergensen; Wolfgang Kuennecke
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Paper Abstract

The rising degree of miniaturization in sensor technology and the efforts to make industrial use of it require an adequate solution for coating of sensors with membranes needed for various applications. A fully automated dispensing device has been developed which is capable of dispensing droplets in nanoliter range with high accuracy and reproducibility. The device combines a three axles positioning system with a pattern recognition system and a dispensing value and is suited for industrial mass production of sensors. Up to 150 droplets per minute are possible. Positioning accuracy is below three micrometer and standard deviation of the dispensing process is 2% or lower. The reproducibility of the process is independent from properties of the medium to be dispensed such as viscosity or solvent and shows no dependence on dispensing parameters such as needle diameter or dispensing time. The measurement of dissolved oxygen in a liquid solution serves as application example to show the practical suitability of the dispensing device.

Paper Details

Date Published: 18 November 1999
PDF: 8 pages
Proc. SPIE 3857, Chemical Microsensors and Applications II, (18 November 1999); doi: 10.1117/12.370288
Show Author Affiliations
Corinna Joergensen, TRACE Biotech AG (Germany)
Wolfgang Kuennecke, TRACE Biotech AG (Germany)


Published in SPIE Proceedings Vol. 3857:
Chemical Microsensors and Applications II
Stephanus Buettgenbach, Editor(s)

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