Advanced Gel-Based Sensors: Design, Fabrication and Applications

A special issue of Gels (ISSN 2310-2861). This special issue belongs to the section "Gel Processing and Engineering".

Deadline for manuscript submissions: 30 April 2027 | Viewed by 476

Special Issue Editors


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Guest Editor
Department of Mechanical and Mechatronics Engineering, Faculty of Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
Interests: biomass material; hierarchical soft materials; hydrogel; wearable sensors; energy storage

E-Mail
Guest Editor
Department of Mechanical and Mechatronics Engineering, Faculty of Engineering, University of Waterloo, Waterloo, ON N2L 3G1, Canada
Interests: hydrogel; wearable sensors; energy materials; electronic/photonic materials; sustainability; responsive materials

Special Issue Information

Dear Colleagues,

Gel-based sensors have attracted growing attention as an important class of soft functional materials for flexible and intelligent sensing. Because of their softness, tissue-like mechanical properties, biocompatibility, and tunable physicochemical characteristics, these materials offer clear advantages over conventional rigid sensors. They can adapt well to complex and dynamic surfaces; respond effectively to mechanical, thermal, chemical, and biological signals; and maintain stable performance under conditions where traditional devices are often limited. As a result, gel-based sensors have shown strong potential for use in wearable electronics, healthcare monitoring, electronic skin, soft robotics, human–machine interfaces, and biointegrated systems.

This Special Issue, Advanced Gel-Based Sensors: Design, Fabrication and Applications, aims to collect recent advances in the development of gel-based sensing materials and devices, welcoming original research articles and reviews covering hydrogels, ionogels, organogels, conductive gels, and multifunctional hybrid systems. Topics of interest include material design, sensing mechanisms, fabrication methods, interface engineering, self-healing, stretchability, adhesiveness, durability, signal stability, and multifunctional integration. Contributions that explore structure–property relationships and strategies for improving device performance are particularly encouraged.

We also welcome studies that demonstrate how gel-based sensors can transition from laboratory research to practical use in areas such as personalized healthcare, implantable and wearable devices, environmental monitoring, sustainable electronics, and soft intelligent systems. By collating progress from materials science, chemistry, engineering, electronics, and biomedicine, this Special Issue will provide a valuable platform for sharing new ideas and recent achievements in this rapidly developing field.

Dr. Youchao Teng
Dr. Yimin Wu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Gels is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2100 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • hydrogels
  • ionogels
  • gel-based sensors
  • wearable sensors
  • flexible electronics
  • biosensors

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Published Papers (1 paper)

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Review

38 pages, 5979 KB  
Review
Electromechanical Properties and Structural Regulation of PEDOT-Derived Gels
by Jinjing Cao, Fang Huang, Zhenhao Jiang, Qijin Ge, Zeyu Liu, Zheng Zhao, Feng Chen, Yukun Zhu, Changpo Zhang, Peng Wang, Dongying Wang and Chuizhou Meng
Gels 2026, 12(6), 502; https://doi.org/10.3390/gels12060502 - 5 Jun 2026
Viewed by 306
Abstract
Poly(3,4-ethylenedioxythiophene) (PEDOT)-based gels have emerged as a prominent class of functional conductive materials, owing to their unique electromechanical coupling characteristics that integrate electrical functionality and mechanical adaptability. This review systematically elucidates the electromechanical properties of PEDOT-derived gels—defined as the synergistic response of electrical [...] Read more.
Poly(3,4-ethylenedioxythiophene) (PEDOT)-based gels have emerged as a prominent class of functional conductive materials, owing to their unique electromechanical coupling characteristics that integrate electrical functionality and mechanical adaptability. This review systematically elucidates the electromechanical properties of PEDOT-derived gels—defined as the synergistic response of electrical behaviors (conductivity, carrier mobility, electrochemical stability) and mechanical performances (flexibility, stretchability, tensile strength, bending resistance)—under mechanical deformation, as well as their mutual regulatory mechanisms. Focusing on how preparation processes and structural regulation modulate these electromechanical properties, this work first introduces the development history, intrinsic conductive mechanisms, and inherent electromechanical characteristics of PEDOT. It then systematically summarizes mainstream synthesis methods, analyzing their effects on balancing mechanical flexibility and electrical conductivity. Addressing the brittleness and poor electromechanical stability of pure PEDOT, this review further explores composite synergistic mechanisms with conductive/non-conductive polymers, metallic materials, inorganic nanoparticles, and biomaterials, clarifying how interfacial interactions optimize mechanical deformability while preserving or enhancing electrical performance. Finally, it summarizes the applications of PEDOT-based composites in electromechanically compatible fields including flexible sensing, micro/nano patterning, implantable biomedicine, anti-corrosion protection, and energy storage. This review aims to clarify the connotation of PEDOT’s electromechanical properties, refine the focus of relevant research, and provide a theoretical basis for designing high-performance PEDOT-based gels with balanced electromechanical properties. Full article
(This article belongs to the Special Issue Advanced Gel-Based Sensors: Design, Fabrication and Applications)
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