Journal
ACS NANO
Volume 8, Issue 12, Pages 12092-12097Publisher
AMER CHEMICAL SOC
DOI: 10.1021/nn5037653
Keywords
carbon nanotube; paper sensor; structural diagnosis; electrical resistance tomography
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Funding
- Nanotechnology Thematic Project in NASA's Game Changing Development Program
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A carbon nanotube coated paper sensor has been developed for the detection of damages in structural components. Electrical resistance tomography is used to measure changes in electrical potential at various locations induced by applying a small electrical current to the sample. The spatial locations and magnitudes of multiple damages are predicted accurately with a sensitivity of 73 ppm in sensing area. The detection limit of the sensor is estimated to be 29 ppm in sensing area, which is at least 30 times better in sensitivity than previous results (0.1-0.65%) in the literature.
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