HYBRID MICROCANTILEVER SENSORS
First Claim
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1. A hybrid sensor for detecting at least one analyte comprising:
- a sensing material having at least volumetric and impedance responses to the presence of at least one analyte;
at least one detector in electrical and physical contact with said sensing material for measuring the volumetric and impedance responses of the sensing material; and
an analyzer for correlating said volumetric and impedance responses into a single measurement to determine at least the identity of the at least one analyte.
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Abstract
An apparatus and method for sensing chemical and/or biological analytes in a gaseous or liquid medium by monitoring the changes in impedance and thickness of a sensing element in the presence of the analyte is provided. Detecting means are provided to measure the change in the physical property of the sensing material to determine the presence and/or the amount of analyte present. An array of hybrid sensors dedicated to detecting a particular analyte which may be included in the medium, is also provided.
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Citations
44 Claims
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1. A hybrid sensor for detecting at least one analyte comprising:
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a sensing material having at least volumetric and impedance responses to the presence of at least one analyte;
at least one detector in electrical and physical contact with said sensing material for measuring the volumetric and impedance responses of the sensing material; and
an analyzer for correlating said volumetric and impedance responses into a single measurement to determine at least the identity of the at least one analyte. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An array of hybrid sensors for detecting analytes, comprising:
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a plurality of discrete sensing materials formed on a surface, each sensing material undergoing a change in impedance and volume in the presence of at least one analyte;
a corresponding plurality of detectors each individual detector in electrical and physical contact with at least one of said discrete sensing materials for measuring the volumetric and impedance responses of the at least one discrete sensing material; and
an analyzer for correlating said volumetric and impedance responses into a single measurement to determine at least the identity of the at least one analyte. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37)
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38. A method for detecting an analyte within a medium, comprising:
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forming a sensing material which undergoes at least a volumetric and impedance response in the presence of said analyte;
providing at least one detector in electrical and physical contact with said sensing material for measuring the volumetric and impedance responses of the sensing material;
introducing a medium containing said analyte to said sensing material, said medium being one of a liquid and a vapor;
measuring said volumetric and impedance responses with said at least one detector; and
correlating said volumetric and impedance responses into a single measurement to determine at least the identity of the at least one analyte. - View Dependent Claims (39, 40, 41, 42, 43, 44)
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Specification