Sensors and sensor arrays of conducting and insulating composites and methods of use thereof
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Abstract
The present invention provides a class of sensors prepared from at least a first material having a positive temperature coefficient of resistance and a second non-conductive or insulating material compositionally different than the first material that show an increase sensitivity detection limit for polar and non-polar analytes. The sensors have applications in the detection of analytes in the environment, associated with diseases and microorganisms.
137 Citations
17 Claims
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1-3. -3. (canceled)
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4. A sensor array comprising:
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a plurality of sensors; and
a measuring apparatus, wherein the sensors are in communication with the measuring apparatus, at least one sensor comprising;
regions of at least a first material having a positive temperature coefficient of resistance and a second non-conductive or insulating material compositionally different than the first material, wherein the sensor provides an electrical path through the regions of the first material and the regions of the second material, the first material being selected from the group consisting of a polyaniline, an emeraldine salt of polyaniline, a polythiophene, a poly(3,4-ethylenedioxy)thiophene (polyEDOT), a poly(3,4-ethylenedithiathiophene), and a poly(3,4-ethylenedioxy)thiophene-poly(styrene sulfonate) (PEDOT-PSS), the sensors constructed to provide a first response when contacted with a first analyte, and a second different response when contacted with a second different analyte. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A sensor array system comprising:
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a plurality of sensors, comprising regions of at least a first material having a positive temperature coefficient of resistance and a second non-conductive or insulating material compositionally different than the first material, wherein the sensor provides an electrical path through the regions of the first material and the regions of the second material, the first material being selected from the group consisting of a polyaniline, an emeraldine salt of polyaniline, a polythiophene, a poly (3,4-ethylenedioxy)thiophene (polyEDOT), a poly(3,4-ethylenedithiathiophene), and a poly(3,4-ethylenedioxy)thiophene-poly(styrene sulfonate) (PEDOT-PSS);
a measuring apparatus, wherein the plurality of sensor s are in communication with the measuring apparatus; and
a computer comprising a resident algorithm, the sensors constructed to provide a first response when contacted with a first analyte, and a second different response when contacted with a second different analyte, wherein the computer processes the difference between the first response and the second response. - View Dependent Claims (15, 16)
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17-30. -30. (canceled)
Specification