各向异性导电性能的柔性应变传感电子皮肤

doi:10.3969/j.issn.0258-8021.2023.05.009

Abstract
Figure/Table
References
Related Citation (9)

Download: PDF (8012 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Electronic skins (e-skins) with intelligent sensing abilities for physiological signals have attracted much attention for their promising applications in smart robots, human-machine interfaces, and wearable medical systems. It is crucial to construct e-skins with anisotropic conductive properties to broaden the application scope of flexible sensing e-skins. In this work, a kind of composite hydrogel named Fe₃O₄@MXene/PVA with anisotropic conductive properties was constructed by using flexible polyvinyl alcohol (PVA) as hydrogel matrix. Magnetic induction technology was used to induce the orientation alignment of Fe₃O₄@MXene in the PVA hydrogel. Experimental results showed that when the cross-linking degree of PVA was 1.5% and the mass fraction of PVA was 8 wt%, the tensile modulus of Fe₃O₄@MXene/PVA reached 19.49 kPa and the fracture strain reached 237%. Mechanical properties of the resulted hydrogel were optimized. When the mass fraction of Fe₃O₄@MXene was 0.064 wt%, the electrical conductivity was optimal, the electrical conductivity in the direction parallel was 0.415 S/m and that in the perpendicular direction was 0.319 S/m. Finally, this work verified the feasibility of the composite hydrogel as an electronic skin for realizing real-time monitoring of the bending angle of human wrist joints. The anisotropic morphology and structure of the electronic are close to that of human tissues, and the composite hydrogel has broad application prospects in biomedical, electronic sensing, and other related fields.

Key words： anisotropy conductive magnetic induction hydrogel strain sensing

Received: 06 November 2022

PACS:

R318

Corresponding Authors: ^*E-mail: wangyanqin@tyut.edu.cn

About author:: ^#Member, Chinese Society of Biomedical Engineering

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Lang Bo
	Zhang Xuehui
	Wu Xiaogang
	Wang Yanqin
	Chen Weiyi

Cite this article:

Lang Bo,Zhang Xuehui,Wu Xiaogang, et al. Flexible Strain-Sensing Electronic Skin with Anisotropic Conductive Properties[J]. Chinese Journal of Biomedical Engineering, 2023, 42(5): 594-602.

URL:

http://cjbme.csbme.org/EN/10.3969/j.issn.0258-8021.2023.05.009 OR http://cjbme.csbme.org/EN/Y2023/V42/I5/594

[1] Ma Zhong, Li Sheng, Wang Huiting, et al. Advanced electronic skin devices for healthcare applications [J]. Journal of Materials Chemistry B, 2019, 7(2): 173-197.
[2] Cao Wentao, Wang Zheng, Liu Xiaohao, et al. Bioinspired MXene-based user-interactive electronic skin for digital and visual dual-channel sensing [J]. Nano-Micro Letters, 2022, 14: 119.
[3] 陈政东,周天乐,安蓉,等. 电子皮肤用纤维素水凝胶的研究进展 [J]. 微纳电子技术, 2021, 58(1): 1-9.
[4] Huang Hailong, Han Lu, Li Junfeng, et al. Super-stretchable, elastic and recoverable ionicconductive hydrogel for wireless wearable, stretchable sensor [J]. Journal of Materials Chemistry A, 2020, 8(20): 10291-10300.
[5] 张晟,曾俊彦,尚方方,等. 电子皮肤热点核心材料及其在生命健康领域中的应用研究进展 [J]. 材料工程, 2022, 50(2): 23-37.
[6] Ouyang Han, Tian Jingjing, Sun Guanglong, et al. Self‐powered pulse sensor for antidiastole of cardiovascular disease[J]. Advanced Materials, 2017, 29(40): 1703456.
[7] Ouyang Han, Jiang Dongjie, Fan Yubo, et al. Self-powered technology for next-generation biosensor[J]. Sci Bull, 2021, 66(17): 1709-1712.
[8] Amjadi M, Sheykhansari S, Nelson BJ, et al. Recent Advances in Wearable Transdermal Delivery Systems [J]. Advanced Materials, 2018, 30(7): 1704530.
[9] Lim CH, Hong Yj, Jung J, et al. Tissue-like skin-device interface for wearable bioelectronics by using ultrasoft, mass-permeable, and low-impedance hydrogels [J]. Science Advances, 2021, 7(19): eabd3716.
[10] Lin Fengcai, Zheng Junjian, Guo Weihong, et al. Smart cellulose-derived magnetic hydrogel with rapid swelling and deswelling properties for remotely controlled drug release [J]. Cellulose, 2019, 26(11): 6861-6877.
[11] Guo Rui, Wang XueLin, Yu WenZhuo, et al. A highly conductive and stretchable wearable liquid metal electronic skin for long-term conformable health monitoring [J]. Science China Technological Sciences, 2018, 61(7): 1031-1037.
[12] 袁浩田,金鑫,姚远,等. 基于天然植物骨架构建各向异性水凝胶 [J]. 功能高分子学报, 2022, 35(2): 180-187.
[13] Zhang Xuehui, Wang Yanqin, Wu Xiaogang, et al. A universal post-treatment strategy for biomimetic composite hydrogel with anisotropic topological structure and wide range of adjustable mechanical properties [J]. Biomaterials Advances, 2022, 133: 112654.
[14] Zhu Qingli, Dai Chenfei, Wagner D, et al. Patterned electrode assisted one-step fabrication of biomimetic morphing hydrogels with sophisticated anisotropic structures [J]. Advanced Science, 2021, 8(24): 2102353.
[15] 刘玉霞,陈列,赵紫光,等. 仿生多尺度功能水凝胶的设计与制备: 从二维界面到三维网络 [J]. 高分子学报, 2018, (9): 1155-1174.
[16] Liu Ji, Wang Liu, Zhang Jiajun, et al. Bioinspired 2D isotropically fatigue-resistant hydrogels [J]. Advanced Materials, 2022, 34(8): 2107106.
[17] Mao Lin, Hu Sanming, Gao Yihua, et al. Biodegradable and electroactive regenerated bacterial cellulose/MXene (Ti₃C₂T_x) composite hydrogel as wound dressing for accelerating skin wound healing under electrical stimulation [J]. Advanced Healthcare Materials, 2020, 9(19): 2000872.
[18] Guo Xin, Li Jiean, Wang Fanyu, et al. Application of conductive polymer hydrogels in flexible electronics [J]. Journal of Polymer Science, 2022, 60(18): 2635-2662.
[19] 胡克. 磁各向异性水凝胶的制备及其作为肿瘤细胞三维培养基质的应用 [D]. 南京: 东南大学, 2016.
[20] Wang Aochen, Liu Zhuo, Hu Ming, et al. Piezoelectric nanofibrous scaffolds as in vivo energy harvesters for modifying fibroblast alignment and proliferation in wound healing[J]. Nano Energy, 2018, 43: 63-71.
[21] Wang Qian, Zhang Qian, Wang Guangyu, et al. Muscle-inspired anisotropic hydrogel strain sensors [J]. ACS Applied Materials & Interfaces, 2022, 14(1): 1921-1928.
[22] Park N, Kim J. Anisotropic hydrogels with a multiscale hierarchical structure exhibiting high strength and toughness for mimicking tendons [J]. ACS Applied Materials & Interfaces, 2022, 14(3): 4479-4489.
[23] Yan Guihua, He Shuaiming, Chen Gaofeng, et al. Anisotropic, strong, self-adhesive and strain-sensitive hydrogels enabled by magnetically-oriented cellulose/polydopamine nanocomposites [J]. Carbohydrate Polymers, 2022, 276: 118783.
[24] Mredha MTI, Jeon I. Biomimetic anisotropic hydrogels: advanced fabrication strategies, extraordinary functionalities, and broad applications [J]. Progress in Materials Science, 2022, 124: 100870.
[25] Feng Yubin, Liu Hou, Zhu Weihang, et al. Muscle-inspired MXene conductive hydrogels with anisotropy and low-temperature tolerance for wearable flexible sensors and arrays [J]. Advanced Functional Materials, 2021, 31(46): 2105264.
[26] Guo Honglei, Guo Hui, Li Ping, et al. Dry-regulated hydrogels with anisotropic mechanical performance and ionic conductivity [J]. Chinese Chemical Letters, 2022, 33(02): 871-876.
[27] Zhao Weiwei, Hu Sanming, Gao Xing, et al. Printed hydrogel nanocomposites: fine-tuning nanostructure for anisotropic mechanical and conductive properties [J]. Advanced Composites and Hybrid Materials, 2020, 3(3): 315-324.
[28] Huang Jing, Li Zhe, Mao Yukun, et al. Progress and biomedical applications of MXenes[J]. Nano Select, 2021, 2(8): 1480-1508.