Techniques and systems for analyte detection
First Claim
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1. An integrated circuit comprising:
- a plurality of sensor sites formed on the integrated circuit, wherein a sensor material is constrained at the sensor site and has regions of a nonconductive organic material and a conductive material, and in the presence of an analyte, the sensor material has measurable changes in an electrical property; and
electrical terminals formed to couple to the sensor material at the sensor sites, wherein the electrical terminals transmit electrical signals to evaluate the change in the electrical property of the sensor material,wherein at least one of the sensor sites is a sensor well that comprises;
a field oxide layer;
a polysilicon layer disposed directly on the field oxide layer;
a first oxide layer disposed directly on the polysilicon layer;
a metal-1 layer disposed directly on the first oxide layer;
a second oxide layer disposed directly on the metal-1 layer; and
a metal-2 layer disposed directly on the second oxide layer.
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Abstract
Techniques are used to detect and identify analytes. Techniques are used to fabricate and manufacture sensors to detect analytes. An analyte (810) is sensed by sensors (820) that output electrical signals in response to the analyte. The electrical signals may be preprocessed (830) by filtering and amplification. In one embodiment, a plurality of sensors are formed on a single integrated circuit. The sensors may have diverse compositions.
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Citations
28 Claims
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1. An integrated circuit comprising:
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a plurality of sensor sites formed on the integrated circuit, wherein a sensor material is constrained at the sensor site and has regions of a nonconductive organic material and a conductive material, and in the presence of an analyte, the sensor material has measurable changes in an electrical property; and electrical terminals formed to couple to the sensor material at the sensor sites, wherein the electrical terminals transmit electrical signals to evaluate the change in the electrical property of the sensor material, wherein at least one of the sensor sites is a sensor well that comprises; a field oxide layer; a polysilicon layer disposed directly on the field oxide layer; a first oxide layer disposed directly on the polysilicon layer; a metal-1 layer disposed directly on the first oxide layer; a second oxide layer disposed directly on the metal-1 layer; and a metal-2 layer disposed directly on the second oxide layer. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11)
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7. An integrated circuit comprising:
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a plurality of sensor sites formed on the integrated circuit, wherein a sensor material is constrained at the sensor site and has regions of a nonconductive organic material and a conductive material, and in the presence of an analyte, the sensor material has measurable changes in an electrical property; and electrical terminals formed to couple to the sensor material at the sensor sites, wherein the electrical terminals transmit electrical signals to evaluate the change in the electrical property of the sensor material, wherein at least one of the sensor sites is a trench that comprises; a field oxide layer; a polysilicon layer disposed directly on the field oxide layer; a first oxide layer disposed directly on the polysilicon layer; a metal-1 layer disposed directly on the first oxide layer; a second oxide layer disposed directly on the metal-1 layer; and a metal-2 layer disposed directly on the second oxide layer.
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12. A sensor cell formed on an integrated circuit comprising:
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a sensor site, wherein a sensor material is constrained at the sensor site by a well structure surrounding the sensor site, and an electrical property of the sensor material changes in the presence of an analyte; and electronic devices coupled to the sensor material to enable measurement of changes in the electrical property of the sensor material, wherein the well site comprises; a field oxide layer; a polysilicon layer disposed directly on the field oxide layer; a first oxide layer disposed directly on the polysilicon layer; a metal-1 layer disposed directly on the first oxide layer; a second oxide layer disposed directly on the metal-1 layer; and a metal-2 layer disposed directly on the second oxide layer. - View Dependent Claims (13, 14, 15)
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16. An integrated circuit comprising:
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an array of sensors for detecting chemical analytes, each sensor having a first and second output terminal; and a plurality of adaptive electronic circuits, each adaptive electronic circuit associated with one of the sensors and coupled to the first and second output terminals of the associated sensor, each adaptive electronic circuit including adaptive signal processing techniques for tuning out environmental background. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. An integrated circuit comprising:
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a plurality of sensor sites formed on the integrated circuit, wherein a sensor material is constrained at the sensor site, and wherein the sensor material has measurable changes in an electrical property in the presence of an analyte; and electrical terminals formed to couple to the sensor material at the sensor sites, wherein the electrical terminals transmit electrical signals to evaluate the change in the electrical property of the sensor material, wherein at least one of the sensor sites is a sensor well that comprises; a field oxide layer; and a polysilicon layer disposed directly on the field oxide layer. - View Dependent Claims (24, 25)
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26. An integrated circuit comprising:
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a plurality of sensor sites formed on a semiconductor substrate, wherein a sensor material is constrained at each sensor site and, wherein the sensor material at each sensor site is compositionally different from the other sensor sites and, wherein in the presence of an analyte, the sensor materials have different measureable changes in an electrical property; and electrical terminals formed to couple to the sensor material at the sensor sites, wherein the electrical terminals transmit electrical signals to evaluate the change in the electrical property of the sensor material, wherein the electrical signals are analyzed to create a pattern that provides unique information about the analyte being measured. - View Dependent Claims (27, 28)
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Specification