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US 5,334,351 AGranted
Sensor for detecting analytes in a fluid medium
AssigneeDragerwerk Aktiengesellschaft
InventorsJurgen Heinze, Andreas W. Synowczyk
Life of this patent
Estimating the term…
Abstract
A sensor detects analytes in a fluid medium by measuring the conductivity of a layer on a carrier with the layer contacting an electrode pair. The layer interacts with the analyte and is improved in that the sensor has a long-term stability and the indication provided by the sensor is completely reversible. The layer is a fullerene layer.
Claims17
A sensor for detecting an analyte in a fluid medium, the sensor comprising:
- a carrier;
- a pair of electrodes arranged on said carrier;
- a fullerene layer in contact with said electrodes and reversibly interacting with the analyte in the manner of an electron exchange to vary the conductivity of said layer in accordance with the concentration or the composition of said analyte;
- and,
- output means connected to said electrodes for supplying a signal indicative of said conductivity.
2 more elements
A sensor for detecting an analyte in a fluid medium, the sensor comprising:
- a carrier, a pair of electrodes arranged on said carrier;
- a fullerene layer in contact with said electrodes and reversibly interacting with the analyte in the manner of an electron exchange to vary the conductivity of said layer in accordance with the concentration or the composition of said analyte;
- a substance added to at least one of said fluid medium, said analyte and said fullerene for facilitating the interaction of said fullerene layer and said analyte so as to cause said analyte and said fullerene layer to have similar proton affinities;
- and,
- output means connected to said electrodes for supplying a signal indicative of said conductivity.
2 more elements
A sensor for detecting an analyte in a fluid medium, the sensor comprising:
- a carrier;
- a pair of electrodes arranged on said carrier;
- a fullerene layer in contact with said electrodes and reversibly interacting with the analyte in the manner of an electron exchange to vary the conductivity of said layer in accordance with the concentration or the composition of said analyte;
- output means connected to said electrodes for supplying a signal indicative of said conductivity;
- and,
- said fullerene layer being doped with a metal.
3 more elements
Dependencies are inferred from the claim text.