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Processes
Special Issues
Nanomaterials and Flexible Electronic Devices: Processing, Diagnostics and Applications
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Nanomaterials and Flexible Electronic Devices: Processing, Diagnostics and Applications

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Materials Processes".

Deadline for manuscript submissions: closed (30 June 2026) | Viewed by 3266

Editors

Dr. Yongchao Yu

E-Mail Website
Guest Editor
School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
Interests: flexible electronic devices; laser processing; nanomaterials
Dr. Ming Xiao

E-Mail Website
Guest Editor
School of Microelectronics Science and Technology, Sun Yat-sen University, Guangzhou 510399, China
Interests: new memory devices and artificial intelligence applications; new sensor devices and internet of things applications; nanomaterial devices and nano/microfabrication
Dr. Shutong Wang

E-Mail Website
Guest Editor
College of Electronics and Information Engineering, Sichuan University, Chengdu 610065, China
Interests: laser micro machining; machine vision; laser interferometry
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

This Special Issue highlights the latest research and technological innovations in the fields of nanomaterials and flexible electronic devices, addressing their processing, diagnostic techniques, and cutting-edge applications. With rapid advancements in wearable electronics, artificial skin, and smart healthcare systems, flexible electronics have emerged as a transformative technology with a vast market potential. This Special Issue aims to gather high-quality contributions that explore novel materials, advanced fabrication methods, and emerging applications to overcome current limitations in flexibility, durability, and performance.

Areas of Interest Include (but are not limited to) the following:

  1. Novel Nanomaterials for Flexible Electronics
    • Functional nanomaterials (e.g., graphene, carbon nanotubes, MXenes, and conductive polymers) for flexible electrodes and sensors.
    • Hybrid nanocomposites that enhance mechanical compliance and electrical conductivity.
    • Self-healing and stretchable nanomaterials for durable wearable devices.
  2. Advanced Manufacturing and Processing Techniques
    • Scalable fabrication methods (inkjet printing, roll-to-roll, electrospinning, and laser direct writing) for flexible electronics.
    • 3D/4D printing of nanostructured materials for customized device architectures.
  3. Diagnostics and Performance Optimization
    • In situ characterization techniques (e.g., SEM, AFM, and Raman spectroscopy) for nanomaterial-based devices.
    • AI-driven optimization of material properties and device performance.
  4. Emerging Applications in Flexible Electronics
    • Wearable health monitors (e.g., strain/pressure/temperature sensors and ECG electrodes).
    • Energy-efficient flexible displays, transistors, and optoelectronic devices.
    • Self-powered systems (triboelectric nanogenerators, flexible batteries, and supercapacitors).
    • Smart packaging, human–machine interfaces, and neuromorphic computing devices.

This Special Issue seeks to bridge the gap between fundamental research and industrial applications, fostering interdisciplinary collaborations to accelerate the development of next-generation flexible electronics. We welcome original research articles, reviews, and short communications that contribute to the advancement of this dynamic field.

We look forward to your submissions.

Dr. Yongchao Yu
Dr. Ming Xiao
Dr. Shutong Wang
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-anonymized peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Processes 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 2400 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

  • novel nanomaterials for flexible electronics
  • advanced manufacturing and processing techniques
  • diagnostics and performance optimization
  • emerging applications in flexible electronics

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Further information on MDPI's Special Issue policies can be found here.

Published Papers (3 papers)

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Research

13 pages, 6712 KB  
Article
High-Performance Iontronic Pressure Sensor with a Multi-Level Conoid-like Structure Fabricated via Direct Laser Writing
by Xingyi Wang, Shutong Wang, Shengbin Zhao, Lufan Qi, Quan Chen, Chenyu Guo and Guoliang Deng
Processes 2026, 14(8), 1234; https://doi.org/10.3390/pr14081234 - 12 Apr 2026
Cited by 1 | Viewed by 840
Abstract
Sensitivity and effective sensing range are core performance metrics of flexible pressure sensors, directly dictating their practical applicability. A key challenge in sensor design is sensitivity degradation with elevated pressure, hindering synergistic optimization of high sensitivity and broad sensing range, while cumbersome electrode [...] Read more.
Sensitivity and effective sensing range are core performance metrics of flexible pressure sensors, directly dictating their practical applicability. A key challenge in sensor design is sensitivity degradation with elevated pressure, hindering synergistic optimization of high sensitivity and broad sensing range, while cumbersome electrode fabrication further impedes facile preparation and large-scale deployment of high-performance devices. Herein, this work proposes a novel fabrication strategy for flexible iontronic pressure sensors via direct laser writing (DLW) technology. A controllable ultraviolet laser patterns polyimide substrates to fabricate hierarchical stepped conoid-like microstructural templates, which are transferred to ion gels through reverse molding. The DLW-enabled precise geometric control and hierarchical conical architectures efficiently amplify interfacial contact area variation under pressure, significantly boosting sensitivity. The resultant sensor achieves a high sensitivity of 118.4 kPa−1 and a broad detection range up to 2000 kPa, with fast response/recovery times of 38.4 ms and 47 ms and excellent mechanical stability enduring 2000 loading–unloading cycles at 850 kPa. Multi-scenario physiological signal monitoring validates its accurate capture of laryngeal vibrations and joint movements. This work establishes a straightforward, efficient microfabrication route for high-performance flexible iontronic sensors, accelerating their practical application in wearable health monitoring and related fields. Full article
(This article belongs to the Special Issue Nanomaterials and Flexible Electronic Devices: Processing, Diagnostics and Applications)
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18 pages, 3952 KB  
Article
Tunable Electrical and Fatigue Performance of Carbon Nanotube-Embedded Bottlebrush Elastomers via Compositional Control
by Abby Jackson and Yuncheng Du
Processes 2025, 13(11), 3613; https://doi.org/10.3390/pr13113613 - 7 Nov 2025
Cited by 1 | Viewed by 867
Abstract
Bottlebrush elastomers (BBEs) are promising for flexible and wearable electronics due to their mechanical resilience. Incorporating conductive nanofillers such as carbon nanotubes (CNTs) enables the tuning of their electrical properties. This work studies the electrical properties of CNT–bottlebrush elastomer composites by varying polydimethylsiloxane [...] Read more.
Bottlebrush elastomers (BBEs) are promising for flexible and wearable electronics due to their mechanical resilience. Incorporating conductive nanofillers such as carbon nanotubes (CNTs) enables the tuning of their electrical properties. This work studies the electrical properties of CNT–bottlebrush elastomer composites by varying polydimethylsiloxane (PDMS)/crosslinker ratios and CNTs loadings. Building on established synthesis methods, this study investigates how compositional changes affect conductivity, sensitivity, and fatigue behavior. Our results show a composition-dependent trade-off between electrical and mechanical fatigue performance, offering insights into tailoring these composites to meet specific performance requirements in next-generation soft electronics. Full article
(This article belongs to the Special Issue Nanomaterials and Flexible Electronic Devices: Processing, Diagnostics and Applications)
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12 pages, 3331 KB  
Article
Porous Carbon-Modified Silk-Derived Carbon Mesh for High-Performance Transparent All-Solid Supercapacitors
by Delong Ma, Xinyu Niu, Yang Chen, Enpeng Hou and Ruili Zhang
Processes 2025, 13(10), 3056; https://doi.org/10.3390/pr13103056 - 25 Sep 2025
Viewed by 1006
Abstract
The practical application of transparent supercapacitors (TSCs) is limited by the inherent trade-off between transparency and conductivity, as well as the environmental and economic drawbacks of electrode materials. This study presents a novel and scalable method for fabricating porous carbon-modified silk-derived carbon fiber [...] Read more.
The practical application of transparent supercapacitors (TSCs) is limited by the inherent trade-off between transparency and conductivity, as well as the environmental and economic drawbacks of electrode materials. This study presents a novel and scalable method for fabricating porous carbon-modified silk-derived carbon fiber meshes as electrode materials for transparent supercapacitors. The process involves the in situ growth of a cobalt organic complex on a silk mesh, followed by carbonization to produce a flexible, transparent carbon fiber mesh with a hierarchical porous structure (specific surface area: 570 m2/g). The resulting material exhibits good mechanical properties and electrical conductivity due to the nanographene-like structure formed during the cobalt-catalyzed carbonization process. This TSC achieves an optical transparency of up to 65% and an aerial capacitance of 9.65 mF/cm2 at a scan rate of 0.01 V/s, surpassing many existing transparent electrodes. Additionally, the device demonstrates outstanding electrochemical stability, retaining 89% of its initial capacitance after 2000 cycles at a scan rate of 0.5 V/s, showcasing superior durability. This study presents a pioneering method for developing TSCs by utilizing sustainable silk-derived carbon materials and a cost-effective fabrication process. Full article
(This article belongs to the Special Issue Nanomaterials and Flexible Electronic Devices: Processing, Diagnostics and Applications)
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