Chemical sensor
AssigneeLife Science Biosensor Diagnostics Pty. Ltd.
InventorsPaul Dastoor, Warwick Belcher
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Abstract
A transistor device (10) is disclosed comprising a source electrode (14) a drain electrode (12) and an enzyme (31) for facilitating generation of a charge carrier from an analyte. The transistor device also comprises a polymer layer (30) for retaining the enzyme (31), the polymer layer (30) being conductive to the charge carrier. The device also comprises an ohmic conductor (32) in contact with said polymer layer (30) for applying a gate voltage to said polymer layer (30). The device also comprises an organic semiconducting layer (18) connecting the source electrode (14) to the drain electrode (12). Also disclosed is a method of making and using the device (10).
Claims20
A process for detecting and/or determining a concentration or an amount of an analyte in a sample, the process comprising:
- (a) preparing a sample comprising an analyte;
- (b) contacting the sample with a transistor device comprising:
- a source electrode;
- a drain electrode;
- an enzyme for facilitating generation of a charge carrier from an analyte;
- a polymer layer for retaining the enzyme, the polymer layer being conductive to the charge carrier;
- an ohmic conductor in contact with said polymer layer for applying a gate voltage to said polymer layer;
- and
- an organic semiconducting layer in contact with said polymer layer, the organic semiconducting layer connecting the source electrode to the drain electrode,
- (c) using the device to:
- detect the analyte;
- and/or
- determine the concentration or the amount of the analyte
- based on an electrical parameter of the device.
Dependencies are inferred from the claim text.