Highly Sensitive Flexible Iontronic Pressure Sensor for Fingertip Pulse Monitoring
| Autor: | Yi Huang, Junlong Yang, Qiupeng Lin, Jun Huang, Shi Guo Chen, Yueji Wang, Yan Wang, Chuan Fei Guo, Xingyu Hou, Jianming Zhang, Weixing Zhang, Linlin Yuan, Yifan Zhang, Yunlong Zhou, Minkun Cai |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Pulse monitoring Computer science Acoustics Biomedical Engineering Pharmaceutical Science 02 engineering and technology 010402 general chemistry 01 natural sciences Stability (probability) Biomaterials Fingers Motion Pulse waveform Heart Rate Waveform Humans Sensitivity (control systems) Pulse Monitoring Physiologic Pulse (signal processing) 021001 nanoscience & nanotechnology Pressure sensor 0104 chemical sciences Highly sensitive body regions Female 0210 nano-technology |
| Zdroj: | Advanced healthcare materials. 9(17) |
| ISSN: | 2192-2659 |
| Popis: | The pulse is a key biomedical signal containing various human physiological and pathological information highly related to cardiovascular diseases. Pulse signals are often collected from the radial artery based on Traditional Chinese Medicine, or by using flexible pressure sensors. However, the wrist wrapped with a flexible pressure sensor exhibits unstable signals under hand motion because of the concave surface of the wrist. By contrast, fingertips have a convex surface and therefore show great promises in stable and long-term pulse monitoring. Despite the promising potential, the fingertip pulse signal is weak, calling for highly sensitive detecting devices. Here, a highly sensitive and flexible iontronic pressure sensor with a linear sensitivity of 13.5 kPa-1 , a swift response, and remarkable stability over 5000 loading/unloading cycles is developed. This sensor enables stable and high-resolution detection of pulse waveform under both static condition and finger motion. Fingertip pulse waveforms from subjects of different genders, age, and health conditions are collected and analyzed, suggesting that fingertip pulse information is highly similar to that of the radial artery. This work justifies that fingertip is an ideal platform for pulse signals monitoring, which would be a competitive alternative to existing complex health monitoring systems. |
| Databáze: | OpenAIRE |
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