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The Advanced Flexible Electronic Devices: 2nd Edition
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The Advanced Flexible Electronic Devices: 2nd Edition

A special issue of Sensors (ISSN 1424-8220). This special issue belongs to the section "Nanosensors".

Deadline for manuscript submissions: 30 November 2025 | Viewed by 2021

Special Issue Editor

Dr. Min Zhang

E-Mail Website
Guest Editor
Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China
Interests: MEMS; micro/nano sensors; flexible sensor and actuator
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Recent advances in materials and device technologies have enabled the fabrication of flexible sensors and actuators for applications in health assessment, medical diagnosis, intelligent robotics, human–machine interface, etc.

Following the success of our previous Special Issue "The Advanced Flexible Electronic Devices”, we would like to invite our colleagues once again to contribute their expertise, insights, and findings in the form of original research articles and reviews for the current new Special Issue.

The objective of this Special Issue is to provide wide coverage of research on the latest advances in flexible sensing and actuating technologies. The scope of this Special Issue includes, but is not limited to:

  • Flexible hybrid electronic devices;
  • Implantable electronic devices;
  • Paper-based electronic devices;
  • Flexible actuators for soft robotics;
  • Flexible sensors/actuators for human–machine interface.

Dr. Min Zhang
Guest Editor

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 100 words) can be sent to the Editorial Office for announcement on this website.

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. Sensors is an international peer-reviewed open access semimonthly 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 2600 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

  • flexible
  • implantable
  • sensors
  • actuators
  • human–machine interface

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Related Special Issue

Published Papers (3 papers)

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Research

15 pages, 2102 KiB  
Article
MXene-Based Flexible Paper Chip for Glucose Detection in Sweat in Low-Temperature Environments
by Yandong Yang, Yajun Zhu, Yifei Wu, Fan Chang, Xu Zhu, Xinyue Zhang, Ning Ma, Yushu Wang and Alaa S. Abd-El-Aziz
Sensors 2025, 25(14), 4273; https://doi.org/10.3390/s25144273 - 9 Jul 2025
Viewed by 312
Abstract
In enzymatic reaction glucose detection chips, the enzyme can easily dislodge from the electrode, which harms both the chip and test stability. Additionally, enzyme activity significantly decreases at low temperatures. Consequently, immobilizing the enzyme at the appropriate substrate and ambient temperature is a [...] Read more.
In enzymatic reaction glucose detection chips, the enzyme can easily dislodge from the electrode, which harms both the chip and test stability. Additionally, enzyme activity significantly decreases at low temperatures. Consequently, immobilizing the enzyme at the appropriate substrate and ambient temperature is a critical step for improving the chip. To address this issue, an electrochemical detection chip was modified using the nanomaterial MXene, known for its large specific surface area, excellent adsorption, good dispersion, and high conductivity. Meanwhile, AgNO3 solution was added to the Ti3C2Tx MXene nanosheet solution, and the AgNP@MXene material was prepared by heating in a water bath. This process further enhances photothermal conversion efficiency due to the localized surface plasmon resonance effect of silver nanoparticles and MXene. This MXene-based photothermally enhanced paper chip exhibits outstanding photothermal conversion performance and sensitive photoelectrochemical responsiveness, along with good cycling stability. Moreover, improved glucose detection sensitivity at low winter temperatures has been achieved, and the ambient temperature range of the paper chip has been expanded to 25–37 °C. Full article
(This article belongs to the Special Issue The Advanced Flexible Electronic Devices: 2nd Edition)
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13 pages, 3092 KiB  
Article
Carbon Dioxide Gas Sensor Based on Terahertz Metasurface with Asymmetric Cross-Shaped Holes Empowered by Quasi-Bound States in the Continuum
by Kai He and Tian Ma
Sensors 2025, 25(13), 4178; https://doi.org/10.3390/s25134178 - 4 Jul 2025
Viewed by 311
Abstract
In this paper, a novel type of polarization-insensitive terahertz metal metasurface with cross-shaped holes is presented, which is designed based on the theory of bound states in continuous media. The fundamental unit of the metasurface comprises a metal tungsten sheet with a cross-shaped [...] Read more.
In this paper, a novel type of polarization-insensitive terahertz metal metasurface with cross-shaped holes is presented, which is designed based on the theory of bound states in continuous media. The fundamental unit of the metasurface comprises a metal tungsten sheet with a cross-shaped hole structure. A thorough analysis of the optical properties and the quasi-BIC response is conducted using the finite element method. Utilizing the symmetry-breaking theory, the symmetry of the metal metasurface is broken, allowing the excitation of double quasi-BIC resonance modes with a high quality factor and high sensitivity to be achieved. Analysis of the multipole power distribution diagram and the spatial distribution of the electric field at the two quasi-BIC resonances verifies that the two quasi-BIC resonances of the metasurface are excited by electric dipoles and electric quadrupoles, respectively. Further simulation analysis demonstrates that the refractive index sensitivities of the two quasi-BIC modes of the metasurface reach 404.5 GHz/RIU and 578.6 GHz/RIU, respectively. Finally, the functional material PHMB is introduced into the metasurface to achieve highly sensitive sensing and detection of CO2 gas concentrations. The proposed metallic metasurface structure exhibits significant advantages, including high sensitivity, ease of preparation, and a high Q-value, which renders it highly promising for a broad range of applications in the domains of terahertz biosensing and highly sensitive gas sensing. Full article
(This article belongs to the Special Issue The Advanced Flexible Electronic Devices: 2nd Edition)
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20 pages, 4849 KiB  
Article
p-CuO/n-ZnO Heterojunction Pyro-Phototronic Photodetector Controlled by CuO Preparation Parameters
by Zhen Zhang, Fangpei Li, Wenbo Peng, Quanzhe Zhu and Yongning He
Sensors 2024, 24(24), 8197; https://doi.org/10.3390/s24248197 - 22 Dec 2024
Viewed by 1041
Abstract
The combination of ZnO with narrow bandgap materials such as CuO is now a common method to synthesize high-performance optoelectronic devices. This study focuses on optimizing the performance of p-CuO/n-ZnO heterojunction pyroelectric photodetectors, fabricated through magnetron sputtering, by leveraging the pyro-phototronic effect. The [...] Read more.
The combination of ZnO with narrow bandgap materials such as CuO is now a common method to synthesize high-performance optoelectronic devices. This study focuses on optimizing the performance of p-CuO/n-ZnO heterojunction pyroelectric photodetectors, fabricated through magnetron sputtering, by leveraging the pyro-phototronic effect. The devices’ photoresponse to UV (365 nm) and visible (405 nm) lasers is thoroughly examined. The results show that when the device performance is regulated by adjusting the three parameters—sputtering power, sputtering time, and sputtering oxygen–argon ratio—the optimal sputtering parameters should be as follows: sputtering power of 120 W, sputtering time of 15 min, and sputtering oxygen–argon ratio of 1:3. With the optimal sputtering parameters, the maximum responsivity of the pyroelectric effect and the traditional photovoltaic effect Rpyro+photo of the detector is 4.7 times that under the basic parameters, and the maximum responsivity of the traditional photovoltaic effect Rphoto is also 5.9 times that under the basic parameters. This study not only showcases the extensive potential of the pyro-phototronic effect in enhancing heterojunction photodetectors for high-performance photodetection but also provides some ideas for fabricating high-performance photodetectors. Full article
(This article belongs to the Special Issue The Advanced Flexible Electronic Devices: 2nd Edition)
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