Fang Qize, Cao Shuchen, Qin Haotian, Yin Ruixue, Zhang Wenjun, Zhang Hongbo
School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China.
Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, SK S7N 5A9, Canada.
Micromachines (Basel). 2023 Sep 28;14(10):1859. doi: 10.3390/mi14101859.
Flexible piezoresistive sensors built by printing nanoparticles onto soft substrates are crucial for continuous health monitoring and wearable devices. In this study, a mechanomyography (MMG) sensor was developed using a flexible piezoresistive MMG signal sensor based on a pyramidal polydimethylsiloxane (PDMS) microarray sprayed with carbon nanotubes (CNTs). The experiment was conducted, and the results show that the sensitivity of the sensor can reach 0.4 kPa in the measurement range of 0~1.5 kPa, and the correlation reached 96%. This has further implications for the possibility that muscle activation can be converted into mechanical movement. The integrity of the sensor in terms of its MMG signal acquisition was tested based on five subjects who were performing arm bending and arm extending movements. The results of this test were promising.
通过将纳米颗粒印刷在柔软基板上构建的柔性压阻传感器对于连续健康监测和可穿戴设备至关重要。在本研究中，基于喷涂有碳纳米管（CNT）的金字塔形聚二甲基硅氧烷（PDMS）微阵列，使用柔性压阻式肌动电流图（MMG）信号传感器开发了一种MMG传感器。进行了实验，结果表明该传感器在0~1.5 kPa的测量范围内灵敏度可达0.4 kPa，相关性达到96%。这对于肌肉激活可以转化为机械运动的可能性具有进一步的意义。基于五名进行手臂弯曲和伸展运动的受试者，测试了该传感器在MMG信号采集方面的完整性。该测试结果很有前景。
