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US 10,309,924 B2Granted
Floating gate based sensor apparatus and related floating gate based sensor applications
AssigneeCornell University
InventorsKrishna Jayant, Edwin C. Kan
Life of this patent
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Abstract
A floating gate based sensor apparatus includes at least two separate electrical bias components with respect to a floating gate based sensor surface within the floating gate based sensor apparatus. By including the at least two electrical bias components, the floating gate based sensor apparatus provides enhanced capabilities for biomaterial and non-biomaterial detection and manipulation while using the floating gate based sensor apparatus.
Claims27
A multi-gate transistor sensor comprising:
- a substrate layer structured to be underneath and in physical contact with a portion of a floating gate layer, wherein a first dielectric layer lies between the substrate layer and another portion of the floating gate layer;
- a sensing gate layer structured to be on top of the floating gate layer with a second dielectric layer lying between the floating gate layer and the sensing gate layer;
- a control gate structured to be on top of the floating gate layer with the oxide layer between the floating gate layer and the control gate, wherein the floating gate layer is capacitively coupled to the control gate and the sensing gate layer;
- a liquid sample chamber structured to be on top of the sensing gate layer;
- and
- a reference electrode in the liquid sample chamber, wherein the reference electrode is in physical contact with the liquid and the sensing gate layer is in physical contact with the liquid.
3 more elements
A multi-gate transistor sensor comprising:
- a gate layer structured to be underneath and in physical contact with a first dielectric layer;
- a floating gate layer structured to be on top of the first dielectric layer, wherein a second dielectric layer is structured to be on top of the floating gate layer;
- a sensing layer structured to be on top of the second dielectric layer, wherein the floating gate is capacitively coupled to the floating gate layer and the sensing gate;
- a liquid sample chamber structured to be on top of the sensing gate layer;
- and
- a reference electrode above the sensing layer so that when liquid is in the liquid sample chamber, the reference electrode is in physical contact with the liquid and the sensing layer is in physical contact with the liquid, wherein a charge on the floating gate layer attracts or repels a biomolecule on a surface of the sensing layer.
3 more elements
Dependencies are inferred from the claim text.