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US 10,594,319 B2Granted
System and method for complimentary VT-drop ambipolar carbon nanotube logic
AssigneeNorthwestern University
InventorsJoseph S. Friedman, Michael L. Geier, Mark C. Hersam, Alan V. Sahakian
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Abstract
A logic gate and a cascaded logic family is described that uses the unique ambipolar behavior, e.g., of carbon nanotubes. A complementary VT-drop ambipolar carbon nanotube logic can provide a decrease in device count compared to previous ambipolar carbon nanotube field effect transistor logic structures, enabling power and/or speed improvements.
Claims31
A system, comprising:
- a logic gate, including an ambipolar device having a total of three separate gates;
- and
- the ambipolar device including in electrical communication with a first gate, a second gate, a third gate, a high/low voltage supply node, and an output node, where the first gate, the second gate and the third gate are each separate gates sharing a same single common ambipolar component.
A system, comprising:
- a first logic gate, including a high/low voltage supply node, an output node wherein the first logic gate is a single device having a total of three separate gates, the first logic gate is formed by combining a first dual-gate ambipolar device and a second dual-gate ambipolar device.
A system, comprising:
- a logic gate, including an ambipolar device having a total of three separate gates;
- and
- the ambipolar device including in electrical communication with a first gate, a second gate, a third gate, a high/low voltage supply node, and an output node,
- where the first gate, the second gate, and the third gate include separate gates sharing a same single common ambipolar component,
- where a first input signal connected with the first gate, a second input signal connected with the second gate, and an inverted form of the second input signal connected with the third gate.
2 more elements
A system, comprising:
- a logic gate, including an ambipolar device having a total of three separate gates;
- and
- the ambipolar device including in electrical communication with a first gate, a second gate, a third gate, a high/low voltage supply node, and an output node,
- where the first gate, the second gate, and the third gate include separate gates sharing a same single common ambipolar component, wherein ambipolar behavior is centered on a non-zero gate-source voltage, and an input voltage is determined as twice the non-zero gate-source voltage.
1 more element
A system, comprising:
- a logic gate, including an ambipolar device having a total of three separate gates;
- and
- the ambipolar device including in electrical communication with a first gate, a second gate, a third gate, a high/low voltage supply node, and an output node,
- where the first gate, the second gate, and the third gate are each separate gates sharing a same single carbon nanotube.
1 more element
Dependencies are inferred from the claim text.