Highly sensitive and multifunctional piezoresistive sensor based on polyaniline foam for wearable Human-Activity monitoring
| Autor: | Ming-Bo Yang, Zewang Xu, Shaodi Zheng, Zheng-Ying Liu, Yan-Hao Huang, Xiaotian Wu, Shilin Huang, Bang-Hu Xie, Wei Yang |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Polydimethylsiloxane technology industry and agriculture Linearity Torsion (mechanics) Response time 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Pressure sensor Piezoresistive effect 0104 chemical sciences chemistry.chemical_compound chemistry Mechanics of Materials Gauge factor Polyaniline Ceramics and Composites Composite material 0210 nano-technology |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 121:510-516 |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2019.04.014 |
| Popis: | A highly stretchable and sensitive multifunctional piezoresistive sensor was reported. These sensors contain micro-cracked and hollowed-out polyaniline (PANI) foams which are supported by polydimethylsiloxane (PDMS). The cracked-PANI foam/PDMS (C-PF/PDMS) strain sensor shows high sensitivity with a gauge factor of ∼10 and excellent linearity and high durability over 500 stretching-releasing cycles. The fabricated C-PF/PDMS pressure sensor exhibits a sensitivity of ∼0.055 kPa−1 in the pressure range of 0–5.0 kPa, a low detection limit of 4 Pa, a fast response time (∼60 ms), recovery time (∼90 ms) and the capability of detecting and distinguishing various mechanical stimuli including compression, shear and torsion forces. When the sensor is attached to the human body, it can function as a health-monitoring device by detecting various human motions such as the bending of fingers and wrist, phonation and the wrist pulse. |
| Databáze: | OpenAIRE |
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