Photo-activated field effect transistor for bioanalyte detection
First Claim
1. A device comprising an electrical sensor and a complex associated with a surface of the electrical sensor, wherein the complex comprises a detection probe and a label bound to the detection probe, the label being capable of absorbing radiation and separating an electrical charge upon being exposed to radiation, the label comprising a first material of a band gap Eg and a second material of band gap Eq that is smaller than Eg such that the label is configured to decouple absorbing radiation from the separating the electrical charge, and wherein the electrical sensor is capable of detecting the electrical charge.
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Abstract
The application relates to a device and method for performing analyte detection, especially biomolecule detection. The device and method combine photo-induced charge separation in label materials and field effect transistors as sensors, resulting in more sensitive, specific and/or selective detections of biomolecules in multiplex assays, such as immunoassays and DNA microarray assays. The embodiments of the invention also encompass a device and method that comprise an array of electrical sensors, such as field effect transistors, and binding complexes for simultaneous multiplex detection of analytes.
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47 Claims
- 1. A device comprising an electrical sensor and a complex associated with a surface of the electrical sensor, wherein the complex comprises a detection probe and a label bound to the detection probe, the label being capable of absorbing radiation and separating an electrical charge upon being exposed to radiation, the label comprising a first material of a band gap Eg and a second material of band gap Eq that is smaller than Eg such that the label is configured to decouple absorbing radiation from the separating the electrical charge, and wherein the electrical sensor is capable of detecting the electrical charge.
- 38. A device comprising an array of electrical sensors and a complex associated with a surface of each of at least a portion of the electrical sensors, wherein each said complex comprises a detection probe and a label bound to the detection probe, said label being capable of absorbing radiation and separating an electrical charge upon being exposed to radiation, the label comprising a first material of a band gap Eg and a second material of band gap Eq that is smaller than Eg such that the label is configured to decouple absorbing radiation from the separating the electrical charge, and wherein the associated electrical sensor is capable of detecting the electrical charge.
Specification