期刊
SMALL
卷 18, 期 7, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.202104810
关键词
crack models; laser scribing graphene; nanomeshes; neural networks; physilogical signal monitoring
类别
资金
- National Key RD Program [2016YFA0200400, 2018YFC2001202]
- National Natural Science Foundation [61434001, 61574083, 61874065, 51861145202, U20A20168]
- National Basic Research Program of China [2015CB352101]
- Beijing Natural Science Foundation [4184091]
- Tsinghua-Fuzhou Institute for Date Technology [TFIDT2018008]
- Shenzhen Science and Technology Program [JCYJ20150831192224146]
- Key Laboratory of Sensing Technology and Biomedical Instruments of Guangdong Province [2020B1212060077]
- project for Science & Technology New Star of Zhujiang in Guangzhou City [201906010082]
- Tsinghua University Tutor Research Fund
- Tsinghua University Initiative Scientific Research Program
- Beijing Innovation Center for Future Chip
Electronic skin (e-skin) for health monitoring is gaining attention as the aging population grows, but for industrialization, a balance of comfort and intelligence is crucial. This study successfully developed intelligent and comfortable e-skin using laser-scribed graphene and polyurethane nanomesh, demonstrating potential for monitoring various physiological signals.
As the aging population increases in many countries, electronic skin (e-skin) for health monitoring has been attracting much attention. However, to realize the industrialization of e-skin, two factors must be optimized. The first is to achieve high comfort, which can significantly improve the user experience. The second is to make the e-skin intelligent, so it can detect and analyze physiological signals at the same time. In this article, intelligent and multifunctional e-skin consisting of laser-scribed graphene and polyurethane (PU) nanomesh is realized with high comfort. The e-skin can be used as a strain sensor with large measurement range (>60%), good sensitivity (GF approximate to 40), high linearity range (60%), and excellent stability (>1000 cycles). By analyzing the morphology of e-skin, a parallel networks model is proposed to express the mechanism of the strain sensor. In addition, laser scribing is also applied to etch the insulating PU, which greatly decreases the impedance in detecting electrophysiology signals. Finally, the e-skin is applied to monitor the electrocardiogram, electroencephalogram (EEG), and electrooculogram signals. A time- and frequency-domain concatenated convolution neural network is built to analyze the EEG signal detected using the e-skin on the forehead and classify the attention level of testers.
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