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Transient piezoresistive sensors based on tolerable, safe, and semiconductive polypyrrole/vermiculite/alginate frameworks

基于聚吡咯/蛭石/海藻纤维复合半导体材料的瞬态压阻传感器

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Abstract

The rapid development of flexible pressure sensors is driven by the fields of electronic skin, human–machine interaction, and health monitoring. These sensors are urgently required. However, it is challenging to simultaneously meet their durable and transient requirements. In this study, a safe and tolerant polypyrrole/vermiculite/alginate semiconductive framework is developed for flexible transient piezoresistive sensors. Negatively charged vermiculite nanosheets are interlayered into biodegradable alginate fabrics, which are further decorated with conductive polypyrrole. The developed multidimensional framework ensures stability for flexible sensors and can be gradually degraded without producing e-waste after completing its service life. The obtained transient piezoresistive sensors exhibit rapid response/recovery time (81/99 ms) and outstanding fatigue resistance properties. Furthermore, an effective machine learning model is developed for human motion recognition and prediction, achieving 100% accuracy. This study provides a promising strategy for organic–inorganic interface design in flexible transient electronics and shows broad application prospects in flexible platforms based on comfortable biofibers.

摘要

电子皮肤、人机交互和健康监测等领域推动了柔性压力传感器的快速发展. 然而, 同时满足耐用和瞬态的需求对柔性压力传感器是一个巨大的挑战. 本文开发了一种用于柔性瞬态压阻传感器的安全、耐受的聚吡咯/蛭石/海藻酸盐半导体框架. 将带负电荷的蛭石纳米片插层到可生物降解的海藻酸盐织物中, 进一步用高灵敏度的导电聚吡咯修饰. 由此产生的多维框架实现了柔性传感器的稳定性, 并且在使用寿命结束后可以在不留下电子垃圾的情况下逐渐降解. 所获得的瞬态压阻传感器显示出了快速的响应时间(81/99 ms)和出色的抗疲劳性能. 此外, 我们开发了一种有效的机器学习模型用于人体动作识别和预测, 准确率为100%. 本工作为柔性瞬态电子学中有机-无机界面的设计提供了一种有前景的策略, 并在基于舒适生物纤维的柔性平台中展现了广阔的应用前景.

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Acknowledgements

This work was supported by Taishan Scholar Program of Shandong Province (tsqn201812055 and tspd20181208), the National Natural Science Foundation of China (51973099), the Central Government Guiding Funds for Local Science and Technology Development (Z135050009017 and 2022ZY015), the Open Laboratory of State Key Laboratory of Organic and Inorganic Composites (oic-202301006), and the Youth Innovation Team Project of Shandong Province, China (2021KJ018).

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Authors and Affiliations

  1. State Key Laboratory of Bio-Fibers and Eco-Textiles, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, College of Materials Science and Engineering, Institute of Marine Biobased Materials, Qingdao University, Qingdao, 266071, China

    Pengzhen Wang  (王鹏真), Junxuan Liang  (梁俊轩), Kewei Zhang  (张克伟) & Yanzhi Xia  (夏延致)

  2. Key Laboratory of Chemical Engineering in South Xinjiang, College of Chemistry and Chemical Engineering, Tarim University, Alaer, 843300, China

    Weiliang Tian  (田维亮) & Kewei Zhang  (张克伟)

Authors
  1. Pengzhen Wang  (王鹏真)
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  2. Junxuan Liang  (梁俊轩)
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  3. Weiliang Tian  (田维亮)
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  4. Kewei Zhang  (张克伟)
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  5. Yanzhi Xia  (夏延致)
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Contributions

Author contributions Wang P carried out the project and wrote the original draft; Liang J took part in the data analysis and discussion. Tian W, Zhang K and Xia Y directed the research in the whole process and revised the manuscript. All authors contributed to the general discussion.

Corresponding authors

Correspondence to Weiliang Tian  (田维亮) or Kewei Zhang  (张克伟).

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Conflict of interest The authors declare that they have no conflict of interest.

Additional information

Supplementary information Supporting data are available in the online version of the paper.

Pengzhen Wang received his MSc degree from the Institute of Applied Chemistry, Xinjiang University in 2019. Currently, he is a PhD candidate at the State Key Laboratory of Bio-fibers and Eco-textiles, Qingdao University. His current research focuses on seaweed polysaccharide-based materials for flexible energy storage and sensing.

Kewei Zhang received his PhD degree from Beijing University of Chemical Technology majored in chemical engineering and technology. Currently, he is a professor at Qingdao University, China. His research interests focus on functional semiconductor materials, bio-based flexible electronics, micro/nano energy and sensing technology.

Weiliang Tian received his BS degree from China University of Petroleum (East China), and PhD degree from Beijing University of Chemical Technology. He is currently a professor at the College of Chemistry and Chemical Engineering, Tarim University. His main research interests focus on the exfoliation of vermiculite, assembly of organic-inorganic nanocomposites, and their applications in the field of energy and environment.

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40843_2023_2704_MOESM1_ESM.pdf

Transient piezoresistive sensors based on tolerable, safe, and semiconductive polypyrrole/vermiculite/alginate frameworks

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Wang, P., Liang, J., Tian, W. et al. Transient piezoresistive sensors based on tolerable, safe, and semiconductive polypyrrole/vermiculite/alginate frameworks. Sci. China Mater. 67, 580–587 (2024). https://doi.org/10.1007/s40843-023-2704-9

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  • DOI: https://doi.org/10.1007/s40843-023-2704-9

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