sensors-logo

Journal Browser

Journal Browser

Frontiers in Flexible Electronics and Sensors

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

Deadline for manuscript submissions: closed (31 December 2022) | Viewed by 13071

Special Issue Editors


E-Mail Website
Guest Editor
School of Materials Science and Engineering, Shandong University, Jinan 250061, China
Interests: flexible electronics; sensors; actuators; nanomaterials; nanocomposites
Special Issues, Collections and Topics in MDPI journals

E-Mail Website
Guest Editor
Building Energy Materials and Components, Swiss Federal Laboratories for Materials Science and Technology (EMPA), CH8600 Dübendorf, Switzerland
Interests: sol-gel chemistry; sensors; electronics; nanocomposites

Special Issue Information

Dear Colleagues,

 

The concept of flexible electronics has been proposed for several decades. These materials have been increasingly attracted and important for electronic devices in applications that require bending, rolling, folding, or stretching, which cannot be fulfilled by conventional electronics. They have a wide range of application prospects in the fields of information, energy, medical treatment, national defence, etc. With the rapid development of nanotechnology, the synergistic combination of polymers and functional nanomaterials such as carbon nanotubes, graphene, metal nanomaterials, transmission metal carbides and/or nitrides (MXene) has brought an enormous opportunity for developing high-performance flexible electronics which have been used as sensors, displays, actuators, batteries, supercapacitors, artificial skin, human–machine interfaces, wearable/portable devices, antenna, electromagnetic interference shields, microwave absorbers, etc.

 

This Special Issue aims to collect recent advances in flexible electronics covering the rational design of current popular materials, including but not limited to carbon, metal, and MXene-based composites and all potential materials, as well as their applications, concerning but not limited to the fabrication processes, the design of materials and special structures (porous structures, interfacial structures, hierarchical structures, hollow structure, etc.), reliability testing, innovative data analysis technologies, state-of-the-art applications, as well as relevant prospects in terms of opportunities and challenges. High-quality research articles, short communications, as well as reviews, are welcome.

 

Dr. Zhihui Zeng
Dr. Shanyu Zhao

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 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 electronics
  • nanomaterials
  • polymer
  • nanocomposites
  • sensors
  • displays
  • actuators
  • electromagnetic interference
  • absorbers
  • wearable devices

Published Papers (3 papers)

Order results
Result details
Select all
Export citation of selected articles as:

Research

Jump to: Review

18 pages, 5678 KiB  
Article
Rotation Grids for Improved Electrical Properties of Inkjet-Printed Strain Gauges
by Matthias Rehberger, Jonas Mertin, Christian Vedder, Jochen Stollenwerk and Johannes Henrich Schleifenbaum
Sensors 2022, 22(16), 6119; https://doi.org/10.3390/s22166119 - 16 Aug 2022
Cited by 2 | Viewed by 1586
Abstract
We report an image data driven approach for inkjet printing (IJP) to improve the electrical properties of printed metallic strain gauges (SGs). The examined SGs contain narrow conducting paths of multiple orientations and therefore suffer from two challenges: 1. The printing direction of [...] Read more.
We report an image data driven approach for inkjet printing (IJP) to improve the electrical properties of printed metallic strain gauges (SGs). The examined SGs contain narrow conducting paths of multiple orientations and therefore suffer from two challenges: 1. The printing direction of inkjet printed conducting paths has an impact on film formation and electrical properties. 2. A loss-free rotation algorithm for IJP image data is lacking. New ways of IJP image data processing are required to compensate for quality-reducing effects. Novel grid types in terms of loss-free rotation algorithms are introduced. For this purpose, a new grid (e.g., 45° tilted) with a different grid constant is placed over a given pixel grid in such a way that all cell centers of the given pixel grid can be transferred to the rotated grid. Via straightening the tilt, the image data is rotated without interpolation and information loss. By applying these methods to measurement gratings of a full bridge with two perpendicular grating orientations, the influence on the manufacturing quality is investigated. It turns out that the electrical detuning of full bridges can be reduced by one order of magnitude compared to state-of-the-art printing by using so-called diagonal rotation grids. Full article
(This article belongs to the Special Issue Frontiers in Flexible Electronics and Sensors)
Show Figures

Figure 1

11 pages, 3890 KiB  
Article
Polyvinyl Alcohol/Graphene Oxide Conductive Hydrogels via the Synergy of Freezing and Salting Out for Strain Sensors
by Jingjiang Wei, Rongjie Wang, Fei Pan and Zhengyi Fu
Sensors 2022, 22(8), 3015; https://doi.org/10.3390/s22083015 - 14 Apr 2022
Cited by 30 | Viewed by 3940
Abstract
Hydrogels of flexibility, strength, and conductivity have demonstrated broad applications in wearable electronics and soft robotics. However, it is still a challenge to fabricate conductive hydrogels with high strength massively and economically. Herein, a simple strategy is proposed to design a strong ionically [...] Read more.
Hydrogels of flexibility, strength, and conductivity have demonstrated broad applications in wearable electronics and soft robotics. However, it is still a challenge to fabricate conductive hydrogels with high strength massively and economically. Herein, a simple strategy is proposed to design a strong ionically conductive hydrogel. This ion-conducting hydrogel was obtained under the synergistic action by salting out the frozen mixture of polyvinyl alcohol (PVA) and graphene oxide (GO) using a high concentration of sodium chloride solution. The developed hydrogel containing only 5 wt% PVA manifests good tensile stress (65 kPa) and elongation (180%). Meanwhile, the PVA matrix doped with a small amount of GO formed uniformly porous ion channels after salting out, endowed the PVA/GO hydrogel with excellent ionic conductivity (up to 3.38 S m−1). Therefore, the fabricated PVA/GO hydrogel, anticipated for a strain sensor, exhibits good sensitivity (Gauge factor = 2.05 at 100% strain), satisfying working stability (stably cycled for 10 min), and excellent recognition ability. This facile method to prepare conductive hydrogels displays translational potential in flexible electronics for engineering applications. Full article
(This article belongs to the Special Issue Frontiers in Flexible Electronics and Sensors)
Show Figures

Figure 1

Review

Jump to: Research

32 pages, 14081 KiB  
Review
Recent Advances in Self-Powered Piezoelectric and Triboelectric Sensors: From Material and Structure Design to Frontier Applications of Artificial Intelligence
by Zetian Yang, Zhongtai Zhu, Zixuan Chen, Mingjia Liu, Binbin Zhao, Yansong Liu, Zefei Cheng, Shuo Wang, Weidong Yang and Tao Yu
Sensors 2021, 21(24), 8422; https://doi.org/10.3390/s21248422 - 17 Dec 2021
Cited by 20 | Viewed by 6259
Abstract
The development of artificial intelligence and the Internet of things has motivated extensive research on self-powered flexible sensors. The conventional sensor must be powered by a battery device, while innovative self-powered sensors can provide power for the sensing device. Self-powered flexible sensors can [...] Read more.
The development of artificial intelligence and the Internet of things has motivated extensive research on self-powered flexible sensors. The conventional sensor must be powered by a battery device, while innovative self-powered sensors can provide power for the sensing device. Self-powered flexible sensors can have higher mobility, wider distribution, and even wireless operation, while solving the problem of the limited life of the battery so that it can be continuously operated and widely utilized. In recent years, the studies on piezoelectric nanogenerators (PENGs) and triboelectric nanogenerators (TENGs) have mainly concentrated on self-powered flexible sensors. Self-powered flexible sensors based on PENGs and TENGs have been reported as sensing devices in many application fields, such as human health monitoring, environmental monitoring, wearable devices, electronic skin, human–machine interfaces, robots, and intelligent transportation and cities. This review summarizes the development process of the sensor in terms of material design and structural optimization, as well as introduces its frontier applications in related fields. We also look forward to the development prospects and future of self-powered flexible sensors. Full article
(This article belongs to the Special Issue Frontiers in Flexible Electronics and Sensors)
Show Figures

Figure 1

Back to TopTop