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Advances in Flexible Electronics and Electronic Devices
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Advances in Flexible Electronics and Electronic Devices

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Electronic Materials".

Deadline for manuscript submissions: 10 October 2026 | Viewed by 7964

Special Issue Editors

Dr. Zuqing Yuan

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Guest Editor
School of Integrated Circuits and Electronics, Beijing Institute of Technology, Beijing, China
Interests: sensors; energy harvesting; epidermal electronics; e-skin
Special Issues, Collections and Topics in MDPI journals
Dr. Junlu Sun

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Guest Editor
Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, Key Laboratory of Materials Physics, Ministry of Education, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China
Interests: self-powered device; luminescent materials; display systems; flexible multimode sensor
Special Issues, Collections and Topics in MDPI journals
Dr. Wenqiang Wu

E-Mail Website
Guest Editor
Institute of Atomic Manufacturing, Beihang University, Beijing 100191, China
Interests: low-dimensional semiconductor materials; flexible optoelectronic devices; vision sensing

Special Issue Information

Dear Colleagues,

Flexible electronics is reshaping the boundaries of modern devices, enabling revolutionary applications in wearables, health monitoring, IoT, and human–machine interfaces. This Special Issue aims to showcase cutting-edge research on novel flexible materials (e.g., organic semiconductors, 2D materials, stretchable polymers), advanced device designs (e.g., sensors, transistors, energy harvesting/storage systems), and scalable fabrication techniques (e.g., printed electronics, transfer printing, micro/nanofabrication). It also highlights emerging applications in biomedicine (e.g., epidermal electronics, implantable devices), environmental interactions (e.g., e-skin, soft robotics), and sustainable technologies (e.g., biodegradable electronics). We welcome original research, reviews, and interdisciplinary studies, particularly those addressing critical challenges such as mechanical stability, environmental durability, and signal processing integration. This Special Issue seeks to bridge the gap from lab to industry, fostering collaboration across materials, devices, and systems for next-generation flexible electronics.

Dr. Zuqing Yuan
Prof. Dr. Junlu Sun
Dr. Wenqiang 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. Materials 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
  • stretchable materials
  • printed electronics
  • bioelectronics
  • e-skin
  • soft robotics
  • biodegradable electronics

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Published Papers (4 papers)

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Research

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12 pages, 2342 KB  
Article
Triboelectric Performance of Electrospun PVDF Fibers for Energy Harvesting: A Comparative Study of Boron Nitride (BN) and Reduced Graphene Oxide (rGO) Fillers
by Sunija Sukumaran, Piotr K. Szewczyk and Urszula Stachewicz
Materials 2026, 19(3), 475; https://doi.org/10.3390/ma19030475 - 24 Jan 2026
Cited by 1 | Viewed by 811
Abstract
The growing demand for smart electronic devices in daily life requires sustainable, renewable energy sources that reliably power portable and wearable systems. Triboelectric nanogenerators (TENGs) have emerged as a promising platform for smart textile-based energy harvesting due to their material versatility and mechanical [...] Read more.
The growing demand for smart electronic devices in daily life requires sustainable, renewable energy sources that reliably power portable and wearable systems. Triboelectric nanogenerators (TENGs) have emerged as a promising platform for smart textile-based energy harvesting due to their material versatility and mechanical compliance. In this work, electrospun poly (vinylidene fluoride) (PVDF) fiber mats incorporating boron nitride (BN) nanoparticles and reduced graphene oxide (rGO) were investigated to elucidate the roles of insulating and conductive nanofillers in governing the structural and electroactive properties of PVDF-based triboelectric materials. Electrospun PVDF mats containing 5 wt.% BN exhibited enhanced β-phase content (82%), attributed to the nucleating effect of BN and strong interfacial interactions between the nanofiller and the PVDF matrix. In contrast, 7 wt.% rGO demonstrated a high electroactive β-phase fraction (81%), arising from filler-induced dipole alignment and enhanced charge transport within the fibrous network. A comparative analysis of BN and rGO highlights filler-driven mechanisms influencing the electroactive phase formation and triboelectric charge generation in PVDF mats. The corresponding triboelectric power density reached 231 μWcm−2 for the 7 wt.% rGO/PVDF and 281 μWcm−2 for the 5 wt.% BN/PVDF-based TENGs, providing valuable insights for the rational design of high-performance, flexible triboelectric materials for wearable energy-harvesting applications. Full article
(This article belongs to the Special Issue Advances in Flexible Electronics and Electronic Devices)
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9 pages, 1622 KB  
Communication
Scalable Graphene–MoS2 Lateral Contacts for High-Performance 2D Electronics
by Woonggi Hong
Materials 2025, 18(20), 4689; https://doi.org/10.3390/ma18204689 - 13 Oct 2025
Cited by 2 | Viewed by 1529
Abstract
As the scaling of silicon-based CMOS technology approaches its physical limits, two-dimensional (2D) materials have emerged as promising alternatives for future electronic devices. Among them, MoS2 is a leading candidate due to its fascinating semiconducting nature and compatibility with CMOS processes. However, [...] Read more.
As the scaling of silicon-based CMOS technology approaches its physical limits, two-dimensional (2D) materials have emerged as promising alternatives for future electronic devices. Among them, MoS2 is a leading candidate due to its fascinating semiconducting nature and compatibility with CMOS processes. However, high contact resistance at the metal–MoS2 interface remains a major bottleneck, limiting device performance. In this study, we report the fabrication and characterization of graphene–MoS2 (Gr–MoS2) lateral heterostructure FETs, where monolayer graphene, synthesized by inductively coupled plasma chemical vapor deposition (ICP-CVD), is directly used as the source and drain. Bilayer MoS2 is selectively grown along graphene edges via edge-guided CVD, forming a chemically bonded in-plane junction without transfer steps. Electrical measurements reveal that the Gr–MoS2 FETs exhibit a threefold increase in average field-effect mobility (3.9 vs. 1.1 cm2 V−1 s−1) compared to conventional MoS2 FETs. Y-function analysis shows that the contact resistance is significantly reduced from 85.8 kΩ to 20.5 kΩ at VG = 40 V. These improvements are attributed to the replacement of the conventional metal–MoS2 contact with a graphene–metal contact. Our results demonstrate that lateral heterostructure engineering with graphene provides an effective and scalable strategy for high-performance 2D electronics. Full article
(This article belongs to the Special Issue Advances in Flexible Electronics and Electronic Devices)
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11 pages, 2114 KB  
Communication
The Effect of Substrate Surface Oxidation on Patterned Graphene Growth for Flexible Electronics
by Ruiqi Zhang, Ning Hou, Huawen Wang, Xu Chen, Haofei Shi and Xin Li
Materials 2025, 18(14), 3338; https://doi.org/10.3390/ma18143338 - 16 Jul 2025
Viewed by 900
Abstract
Graphene exhibits exceptional electronic properties, superior mechanical strength, and remarkable flexibility, driving significant advances in flexible electronics. However, achieving high-precision patterned graphene via in situ fabrication for such applications remains challenging, limiting the development of graphene-based flexible devices. In this study, we successfully [...] Read more.
Graphene exhibits exceptional electronic properties, superior mechanical strength, and remarkable flexibility, driving significant advances in flexible electronics. However, achieving high-precision patterned graphene via in situ fabrication for such applications remains challenging, limiting the development of graphene-based flexible devices. In this study, we successfully synthesized patterned graphene with high precision by substrate surface oxidation technology. The effect of substrate surface oxidation on patterned graphene growth was deeply investigated. By regulating the oxidation time, we precisely controlled the oxidation degree of the substrate and characterized the boundary precision between oxidized and unoxidized regions. Finally, we achieved the high-precision in situ fabrication of patterned graphene with a feature size of 0.5 μm on selectively oxidized substrates. Furthermore, we fabricated a flexible fluorescent device based on patterned graphene, demonstrating the pronounced fluorescence quenching effect of graphene (IGr-free/IGr-cov ≈ 3). Full article
(This article belongs to the Special Issue Advances in Flexible Electronics and Electronic Devices)
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Review

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26 pages, 10383 KB  
Review
Flexible and Wearable Tactile Sensors for Intelligent Interfaces
by Xu Cui, Wei Zhang, Menghui Lv, Tianci Huang, Jianguo Xi and Zuqing Yuan
Materials 2025, 18(17), 4010; https://doi.org/10.3390/ma18174010 - 27 Aug 2025
Cited by 15 | Viewed by 4119
Abstract
Rapid developments in intelligent interfaces across service, healthcare, and industry have led to unprecedented demands for advanced tactile perception systems. Traditional tactile sensors often struggle with adaptability on curved surfaces and lack sufficient feedback for delicate interactions. Flexible and wearable tactile sensors are [...] Read more.
Rapid developments in intelligent interfaces across service, healthcare, and industry have led to unprecedented demands for advanced tactile perception systems. Traditional tactile sensors often struggle with adaptability on curved surfaces and lack sufficient feedback for delicate interactions. Flexible and wearable tactile sensors are emerging as a revolutionary solution, driven by innovations in flexible electronics and micro-engineered materials. This paper reviews recent advancements in flexible tactile sensors, focusing on their mechanisms, multifunctional performance and applications in health monitoring, human–machine interactions, and robotics. The first section outlines the primary transduction mechanisms of piezoresistive (resistance changes), capacitive (capacitance changes), piezoelectric (piezoelectric effect), and triboelectric (contact electrification) sensors while examining material selection strategies for performance optimization. Next, we explore the structural design of multifunctional flexible tactile sensors and highlight potential applications in motion detection and wearable systems. Finally, a detailed discussion covers specific applications of these sensors in health monitoring, human–machine interactions, and robotics. This review examines their promising prospects across various fields, including medical care, virtual reality, precision agriculture, and ocean monitoring. Full article
(This article belongs to the Special Issue Advances in Flexible Electronics and Electronic Devices)
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