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Condensed Matter
Special Issues
Flexible Matter for Electronics, Photonics, and Energy Conversion
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Flexible Matter for Electronics, Photonics, and Energy Conversion

A special issue of Condensed Matter (ISSN 2410-3896). This special issue belongs to the section "Physics of Materials".

Deadline for manuscript submissions: 15 November 2026 | Viewed by 1441

Special Issue Editors

Dr. Wenke Xie

E-Mail Website
Guest Editor
School of Physics, University of Electronic Science and Technology of China, Chengdu 611731, China
Interests: hydrogel; flexible electronics; terahertz absorber; ion transport; MXene; thermoelectricity
Prof. Dr. Xu Xiao

grade E-Mail Website
Guest Editor
School of Physics, State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chengdu 610054, China
Interests: MXene; 2D materials; communication technology; nanomaterials; energy applications
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues, 

The convergence of flexibility, functionality, and sustainability in materials science is shaping the development of next-generation electronics, photonics, and energy technologies. Flexible matter—encompassing polymers, composites, and dynamic architectures—offers unprecedented opportunities to combine mechanical adaptability with efficient energy conversion and light manipulation. Recent advances highlight its transformative role in enabling wearable systems, conformable photonic devices, and resilient energy harvesters, driving innovations from biomedical interfaces to IoT ecosystems.

This Special Issue, entitled "Flexible Matter for Electronics, Photonics, and Energy Conversion", seeks to compile cutting-edge research on the design principles, fabrication strategies, and multifunctional applications of deformable materials. We welcome contributions addressing the following areas:

(1) Novel material platforms with tunable electrical, optical, or thermal properties;

(2) Energy conversion mechanisms (e.g., thermo-, piezo-, triboelectric effects) under mechanical strain;

(3) Photonic structures for adaptive light harvesting, sensing, or emission;

(4) System-level integration in wearable, implantable, or environmental-interfacing devices.

By fostering interdisciplinary dialogue, this Issue aims to accelerate the development of robust, scalable solutions to the challenges of sustainable technology.

Dr. Wenke Xie
Prof. Dr. Xu Xiao
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. Condensed Matter is an international peer-reviewed open access quarterly 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 1600 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
  • flexible photonics
  • energy-harvesting materials
  • multifunctional composites
  • wearable self-powering
  • soft material design
  • conformable sensors
  • sustainable energy conversion

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Published Papers (1 paper)

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Review

22 pages, 1738 KB  
Review
Bridging Quantum Capacitance and Experimental Electrochemical Performance in 2D Materials for Supercapacitors: From Density of States to Device-Level Interpretation
by Maria C. Barrero-Moreno, Abraham Méndez-Reséndiz, Juan C. Carrillo-Rodriguez and Andrés M. Garay-Tapia
Condens. Matter 2026, 11(1), 10; https://doi.org/10.3390/condmat11010010 - 21 Mar 2026
Viewed by 928
Abstract
Two-dimensional (2D) materials, particularly MXenes and transition metal dichalcogenides (TMDs), have attracted intense interest as supercapacitor electrodes due to their high surface area and tunable electronic structure. However, large discrepancies persist between the quantum capacitance values predicted by density functional theory (DFT) calculations [...] Read more.
Two-dimensional (2D) materials, particularly MXenes and transition metal dichalcogenides (TMDs), have attracted intense interest as supercapacitor electrodes due to their high surface area and tunable electronic structure. However, large discrepancies persist between the quantum capacitance values predicted by density functional theory (DFT) calculations and experimentally measured gravimetric capacitances. In this review, we critically analyze DFT methodologies, surface models, normalization strategies, and electrochemical characterization protocols, and compile an extensive dataset of reported MXene and TMD systems to quantify the degree of experimental–theoretical agreement. We show that MXenes typically achieve less than 20% of their predicted capacitance because of restacking, surface terminations, and limited ion accessibility, whereas TMDs exhibit substantially better correspondence, often approaching or exceeding 70% of theoretical values. These results indicate that the theoretical capacitance predicted by DFT is primarily determined by the electronic structure of the material, which defines the upper limit of charge storage, whereas the experimentally achieved capacitance is largely controlled by morphological factors, surface chemistry, and electrode architecture that limit ion accessibility. Full article
(This article belongs to the Special Issue Flexible Matter for Electronics, Photonics, and Energy Conversion)
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