Patent ID: 6977511

Claim:
A sensor array for sensing an airborne analyte, the sensor array comprising at least a first sensor and a second sensor, wherein at least the first sensor comprises: a first conductive plate, which first conductive plate serves as a base plate; a second conductive plate disposed in spaced relation to and in electrical communication with the first conductive plate, wherein at least a portion of the second conductive plate is moveable in relation to the first conductive plate; a reactive layer disposed between at least a portion of the second conductive plate and the first conductive plate, the reactive layer being comprised of a polymer film comprised of at least one polymer species and configured to effect a change in capacitance between the second conductive plate and the first conductive plate when the reactive layer is exposed to the analyte; and a capacitance sensing circuit for detecting a change in capacitance between the first conductive plate and the second conductive plate indicative of the presence of the analyte.