Differential Humidity Sensor
AssigneeMatrix Sensors, Inc.
InventorsHeinrich Sussner, Paul R. Wilkinson
Life of this patent
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Abstract
A sensor array includes at least first and second resonator sensors. A receptor material on the first sensor is hydrophilic relative to a receptor material on the second sensor, and the receptor material on the second sensor is hydrophobic relative to the receptor material on the first sensor. At least one detector measures sensor responses when masses of one or more of substances are adsorbed or bound to the sensors. A processor receives signals or data representative of the sensor responses. The processor is programmed to determine at least one humidity value according to the sensor responses.
Claims30
A device comprising:
- a) a sensor array including at least first and second resonator sensors, wherein each of the first and second sensors has a receptor material disposed thereon for adsorbing or binding one or more substances, the receptor material on the first sensor being hydrophilic relative to the receptor material on the second sensor, and the receptor material on the second sensor being hydrophobic relative to the receptor material on the first sensor;
- b) detection means for detecting sensor responses when masses of one or more of the substances are adsorbed or bound to the sensors;
- and
- c) at least one processor in communication with the detection means for receiving signals or data representative of the sensor responses, wherein the processor is programmed to determine at least one humidity value according to the sensor responses.
A method comprising:
- a) exposing a sensor array to a sample, wherein the sensor array includes at least first and second resonator sensors, each of the first and second sensors has a receptor material disposed thereon for adsorbing or binding one or more substances, the receptor material on the first sensor is hydrophilic relative to the receptor material on the second sensor, and the receptor material on the second sensor is hydrophobic relative to the receptor material on the first sensor;
- b) detecting sensor responses to the sample;
- and
- c) employing at least one processor to determine at least one humidity value according to the sensor responses.
Dependencies are inferred from the claim text.