Super-sensitive capacitive strain sensor with electrode fragmentation
AssigneeKing Abdullah University of Science and Technology
InventorsGilles LUBINEAU, Hussein NESSER
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Abstract
A capacitive strain sensor configured to measure a strain includes a dielectric layer; a first electrode placed on a first face of the dielectric layer; and a second electrode placed on a second face, opposite to the first face, of the dielectric layer. The first electrode is formed of a single-walled carbon nanotube paper, and the single-walled carbon nanotube paper has plural pre-cracks made according to a pattern.
Claims21
A capacitive strain sensor configured to measure a strain, the sensor comprising:
- a dielectric layer;
- a first electrode placed on a first face of the dielectric layer;
- and
- a second electrode placed on a second face, opposite to the first face, of the dielectric layer,
- wherein the first electrode is formed of a single-walled carbon nanotube paper, and
- wherein the single-walled carbon nanotube paper has plural pre-cracks made according to a pattern.
A method for making a capacitive strain sensor, the method comprising:
- providing a dielectric layer;
- forming a first electrode from a single-walled carbon nanotube paper;
- cutting plural pre-cracks into the single-walled carbon nanotube paper according to a given pattern;
- placing the first electrode on a first face of the dielectric layer;
- forming a second electrode from the single-walled carbon nanotube paper;
- and
- placing the second electrode on a second face, opposite to the first face, of the dielectric layer.
A capacitive strain sensor configured to measure a strain, the sensor comprising:
- a dielectric layer;
- a first electrode placed on a first face of the dielectric layer;
- a second electrode placed on a second face, opposite to the first face, of the dielectric layer;
- and
- an inductor connected between the first electrode and the second electrode and configured to receive an interrogation signal and generate a signal indicative of a strain applied to the sensor,
- wherein the first electrode is formed of a single-walled carbon nanotube paper, and
- wherein the single-walled carbon nanotube paper has plural pre-cracks made according to a pattern.
Dependencies are inferred from the claim text.