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Knitted self-powered sensing textiles for machine learning-assisted sitting posture monitoring and correction 被引量:7
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作者 Yang Jiang Jie An +6 位作者 Fei Liang Guoyu Zuo Jia Yi Chuan Ning Hong Zhang Kai Dong Zhong Lin Wang 《Nano Research》 SCIE EI CSCD 2022年第9期8389-8397,共9页
With increasing work pressure in modern society,prolonged sedentary positions with poor sitting postures can cause physical and psychological problems,including obesity,muscular disorders,and myopia.In this paper,we p... With increasing work pressure in modern society,prolonged sedentary positions with poor sitting postures can cause physical and psychological problems,including obesity,muscular disorders,and myopia.In this paper,we present a self-powered sitting position monitoring vest(SPMV)based on triboelectric nanogenerators(TENGs)to achieve accurate real-time posture recognition through an integrated machine learning algorithm.The SPMV achieves high sensitivity(0.16 mV/Pa),favorable stretchability(10%),good stability(12,000 cycles),and machine washability(10 h)by employing knitted double threads interlaced with conductive fiber and nylon yarn.Utilizing a knitted structure and sensor arrays that are stitched into different parts of the clothing,the SPMV offers a non-invasive method of recognizing different sitting postures,providing feedback,and warning users while enhancing long-term wearing comfortability.It achieves a posture recognition accuracy of 96.6%using the random forest classifier,which is higher than the logistic regression(95.5%)and decision tree(94.3%)classifiers.The TENG-based SPMV offers a reliable solution in the healthcare system for non-invasive and long-term monitoring,promoting the development of triboelectric-based wearable electronics. 展开更多
关键词 posture monitoring knitted fabric triboelectric nanogenerator wearable electronics machine learning
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连续电沉积法制备长纤维氧化锌基复合光电极
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作者 秦龙 王韵词 项思维 《激光与光电子学进展》 CSCD 北大核心 2023年第13期91-100,共10页
纤维结构电子器件近年来备受关注,但作为其核心部件的纤维结构光电极尚未实现批量化制造。尤其是,在沿长尺寸纤维电极组装纳米结构ZnO等常用半导体氧化物的过程中,往往面临前体溶胶长时间稳定保存与局部凝胶快速可控沉积的矛盾。因此提... 纤维结构电子器件近年来备受关注,但作为其核心部件的纤维结构光电极尚未实现批量化制造。尤其是,在沿长尺寸纤维电极组装纳米结构ZnO等常用半导体氧化物的过程中,往往面临前体溶胶长时间稳定保存与局部凝胶快速可控沉积的矛盾。因此提出了一种适合在长纤维基底上连续可控沉积纳米ZnO的电沉积方法。研究设计了能沿长纤维移动的微型连续流反应槽,并通过电泳作用强化胶团迁移,触发溶胶在纤维电极局部的快速凝胶化。最终,在长度超过米级的镀金属高分子纤维上,均匀包覆ZnO纳米薄层,并进一步在薄层上生长了多孔及纳米棒阵列结构的ZnO层,进而开发了一类纤维结构ZnO基光电极材料。该材料被成功应用于纤维太阳能电池,其中最佳的器件达到了0.446 V的开路电压、3.77 mA·cm^(-2)的短路电流密度和0.41的填充因子。相关方法为突破多种纤维结构氧化物半导体电极的批量化制备瓶颈,实现大面积织物电子器件及智能纺织品加工提供了重要思路。 展开更多
关键词 纤维太阳能电池 纳米氧化物 可控电沉积 长纤维电极 织物电子
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