Harnessing the Wide-range Strain Sensitivity of Bilayered PEDOT:PSS Films for Wearable Health Monitoring.
Harnessing the Wide-range Strain Sensitivity of Bilayered PEDOT:PSS Films for Wearable Health Monitoring.
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利用双层PEDOT:PSS薄膜的宽范围应变灵敏度进行可穿戴健康监测。
DOI:
10.1016/j.matt.2021.06.034
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发表时间:
2021-09-01
期刊:
影响因子:
18.9
通讯作者:
Khademhosseini A
中科院分区:
文献类型:
--
作者:
Liu H;Zhang S;Li Z;Lu TJ;Lin H;Zhu Y;Ahadian S;Emaminejad S;Dokmeci MR;Xu F;Khademhosseini A
Mechanical deformation of human skin provides essential information about human motions, muscle stretching, vocal fold vibration, and heart rates. Monitoring these activities requires the measurement of strains at different levels. Herein, we report a wearable wide-range strain sensor based on conducting polymer poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS). A bioinspired bilayer structure was constructed to enable a wide-range strain sensing (1%~100%). Besides, hydrogel was chosen as the biological- and mechanical-compatible interface layer with the human skin. Finally, we demonstrated that the strain sensor is capable of monitoring various strain-related activities, including subtle skin deformation (pulse and phonation), mid-level body stretch (swallowing and facial expressions), and substantial joint movement (elbow bending). A bi-layered PEDOT:PSS film that enables wide-range strain sensing is reported. With the dislocation of microcracked films under strain, low detection limit and high maximum sensing value are realized simultaneously. The resultant wearable strain sensor is capable of perceiving phonation and facial expression.
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