Journal
NANO RESEARCH
Volume 15, Issue 4, Pages 3614-3620Publisher
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-021-3906-x
Keywords
pressure sensing; temperature sensing; carbon nanotube; direct stamping
Categories
Funding
- National Natural Science Foundation of China [52072415]
- Guangdong Basic and Applied Basic Research Foundation [2021A1515012387]
- Science and Technology Program of Guangzhou [201904010450]
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A method for fabricating multifunctional tactile sensors that can detect pressure and temperature stimuli signals simultaneously has been proposed. The sensor exhibits high sensitivity, large linear range, and fast response speed in pressure sensing, as well as high temperature sensitivity and great linearity in temperature sensing. It shows great potential in applications for artificial intelligence and health monitoring.
Flexible and wearable sensors have broad application prospects in health monitoring and artificial intelligence. Many different single-functional sensing devices have been developed in recent years, such as pressure sensors and temperature sensors. However, it is still a great challenge to design and fabricate tactile sensors with multiple sensing functions. Herein, we propose a simple direct stamping method for the fabrication of multifunctional tactile sensors. It can detect pressure and temperature stimuli signals simultaneously. This pressure/temperature sensor possesses high sensitivity (0.67 kPa(-1)), large linear range (0.75-5 kPa), and fast response speed (15.6 ms) in pressure sensing. It also has a high temperature sensitivity (1.41%/degrees C) and great linearity (0.99) for temperature sensing in the range of -30 to 30 degrees C. All these excellent performances indicate that this pressure/temperature sensor has great potential in applications for artificial intelligence and health monitoring.
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