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US 9,518,885 B2Granted
Carbon nanotube temperature and pressure sensors
AssigneeUT-Battelle, LLC
InventorsIlia N. Ivanov, David B. Geohegan
Life of this patent
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Abstract
The present invention, in one embodiment, provides a method of measuring pressure or temperature using a sensor including a sensor element composed of a plurality of carbon nanotubes. In one example, the resistance of the plurality of carbon nanotubes is measured in response to the application of temperature or pressure. The changes in resistance are then recorded and correlated to temperature or pressure. In one embodiment, the present invention provides for independent measurement of pressure or temperature using the sensors disclosed herein.
Claims7
A temperature sensor comprising:
- a thermocouple body comprising a first carbon nanotube and a second carbon nanotube, wherein the first carbon nanotube and the second carbon nanotubes comprise a junction at a first end of the thermocouple body, wherein the first carbon nanotube and the second carbon nanotube have dissimilar electrical properties, and wherein the first carbon nanotube has a greater number of defects than the second carbon nanotube;
- and
- a voltmeter in electrical communication with the first carbon nanotube and the second carbon nanotube, wherein application of temperature to the first end of the thermocouple body produces a current in a circuit composed of the first carbon nanotube and the second carbon nanotube that is proportional to the temperature.
Dependencies are inferred from the claim text.