Novel multi-walled carbon nanotubes-embedded laser-induced graphene in crosslinked architecture for highly responsive asymmetric pressure sensor
| Autor: | Ziwei Zhou, Jing Gao, Jiahao Gui, Caidong Zheng, Rongqing Xu, Jiang Zhao, Jinsong Luo |
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| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Materials science Graphene Metals and Alloys Electronic skin Nanotechnology 02 engineering and technology Carbon nanotube 021001 nanoscience & nanotechnology Condensed Matter Physics Laser 01 natural sciences Pressure sensor Surfaces Coatings and Films Electronic Optical and Magnetic Materials law.invention Finger movement law 0103 physical sciences Human monitoring Electronics Electrical and Electronic Engineering 0210 nano-technology Instrumentation |
| Zdroj: | Sensors and Actuators A: Physical. 323:112658 |
| ISSN: | 0924-4247 |
| Popis: | Flexible and wearable pressure sensors are attracting a considerable interest for the essential requirements of personalized health monitoring and electronic skin in next-generation electronics. However, reliable and cost-effective preparation of high-performance pressure sensors remains a challenge. Herein, a novel flexible asymmetric pressure sensor composed of multi-walled carbon nanotubes (MWCNTs) and laser-induced graphene (LIG) has been developed. The key resistance sensitive material of MWCNTs-embedded LIG (MWCNTs/LIG) with an interconnected hierarchical microstructure is fabricated by a simple, convenient and efficient laser direct writing (LDW) technique. By virtue of this designed three-dimensional crosslinked structure, MWCNTs/LIG hybrid endows the asymmetric pressure sensor with combined excellent characteristics of a high sensitivity (2.41 kPa−1), prominent detectable limit (about 1.2 Pa), very responsive recovery (2 ms), and remarkable durability (>2 000 cycles). This high-performance MWCNTs/LIG asymmetric pressure sensor can clearly detect various subtle human motions (such as breath, vocal vibration, finger movement, and wrist pulse) in real time. Moreover, the integrated MWCNTs/LIG sensory array has a very good multi-point recognition capability. Benefit from its outstanding sensing performances, the as-fabricated pressure sensor has vital inspiration for widespread practical applications in human monitoring of physiological activities, electronic skin, and other wearable fields. |
| Databáze: | OpenAIRE |
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