Micro Total Analysis Systems pp 267-271 | Cite as
Redox-Sensitive Field-Effect Transistors as Transducers for Micro-Analysis Systems
Conference paper
Abstract
A new type of (bio)chemical sensor, the redox-sensitive field-effect transistor is described. It consists of a conventional ISFET with a noble metal added on top of the gate insulator. The gate electrode is modified with a redox polymer containing osmium complexes. The potentiostatic multi-puls method is introduced which allows the adjustment of the redox potential of the gate to a desired value in a stepwise way. It is shown that the open circuit potential after switching off the potentiostat is a good measurement of the presence of the redox active species NADH.
Keywords
Open Circuit Potential Gate Insulator Gate Electrode Redox Polymer Osmium Complex
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References
- 1 .S. Caras, J. Janata, Anal. Chem. 52 (1980) 1935–1937.CrossRefGoogle Scholar
- 2 .L. Ye, M. Hämmerle, A:J: Oolsthoorn, W. Schuhmann, H.-L. Schmidt, J.A. Duine, A. Heller,Anal. Chem. 65 (1993) 238–241.CrossRefGoogle Scholar
- 3 .T. Falter, T. Mikolajick, H. Ryssel in F. Scheller, R.D. Schmid, GBF Monograpies, Vol.17, VCH Weinheim, p. 345–347.Google Scholar
- 4 .J. Janata, R.H. Huber. Solid State Chemical Sensors, Academic Press Inc., Orlando 1985.Google Scholar
- 5 .B.A. Gregg, A. Heller, J. Phys. Chem. 95 (1991) 5970–5975.CrossRefGoogle Scholar
- 6 .T. Vering, W. Schuhmann, D. Seiwald, H.-L. Schmidt, J. Electroanal. Chem. 364 (1994) 277–279.CrossRefGoogle Scholar
- 7 .B. Uhe, G. Janker, W. Schuhmann, H.-L. Schmidt, J. Janata, Sens. Act. B 7 (1992) 389–392.CrossRefGoogle Scholar
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© Springer Science+Business Media Dordrecht 1995