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Soft Sci 2022;2:[Accepted].10.20517/ss.2022.16© The Author(s) 2022
Accepted Manuscript
Open AccessReview Article

Recent advances in flexible and soft gel-based pressure sensors 

Correspondence Address: Prof. Chuizhou Meng, School of Mechanical Engineering, Hebei University of Technology, No. 5340, Xiping Road, Beichen District, Tianjin 300401, China. E-mail: 2018108@hebut.edu.cn; Prof. S. Guo, School of Mechanical Engineering, Hebei University of Technology, No. 5340, Xiping Road, Beichen District, Tianjin 300401, China. E-mail: guoshijie@hebut.edu.cn

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© The Author(s) 2022. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, sharing, adaptation, distribution and reproduction in any medium or format, for any purpose, even commercially, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Abstract

Gel, a typical kind of flexible and soft material, possesses intrinsic merits of transparent bionic structure, superior mechanical property and excellent elasticity and viscosity. Recently, gel-based materials have attracted great attention for their broad promising applications in biomedical material, energy storage, light emission, actuators, military and aerospace devices, especially the intelligent sensing towards human-related applications. Among various flexible and soft pressure sensors, the gel-based ones have been gradually studied as an emerging hot research topic. In this review, we focus on the latest findings in the rapidly developing gel-based pressure sensors. Firstly, the classification and properties of the three types of gels and their corresponding fabrication methods are introduced. Secondly, the four types of basic working principles of pressure sensors are summarized with comparison of advantages and disadvantages followed by introduction of constructing pressure sensors based on gel structures. Thirdly, the latest representative research work on the three types of gel-based materials towards various applications of electronic skin, human motion capture, healthcare and rehabilitation, physiological activity monitoring and human-machine interaction is comprehensively reviewed. In the end, summarization of the remaining challenges and outline of the development trend are proposed. 

Cite This Article

Sun G, Wang P, Jiang Y, Meng C, Guo S. Recent advances in flexible and soft gel-based pressure sensors. Soft Sci 2022;2:[Accept]. http://dx.doi.org/10.20517/ss.2022.16

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