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2D Materials for Advanced Sensing Technology
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2D Materials for Advanced Sensing Technology

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

Deadline for manuscript submissions: 25 October 2026 | Viewed by 2922

Special Issue Editor

Dr. Mikhael Bechelany

E-Mail Website
Guest Editor
European Institute of Membranes (IEM), University of Montpellier, 34090 Montpellier, France
Interests: atomic layer deposition; photocatalysis; electrospinning; nanomaterials; sensors; thin films
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Two-dimensional (2D) materials are an emerging class of ultrathin nanomaterials with remarkable physicochemical properties. Their unique features, such as an extremely high surface-to-volume ratio, tunable electronic and optical properties, and versatile chemical functionality, make them highly attractive for sensing and biosensing applications. Various types of 2D materials have garnered significant attention, including graphene and its derivatives, transition metal dichalcogenides (TMDs), layered double hydroxides, boron nitride, MXenes, and transition metal oxides. These materials exhibit exceptional electrical conductivity, chemical stability, and mechanical flexibility, making them promising candidates for the next generation of sensor technologies.

This Special Issue aims to bring together original research and review articles focused on the development of 2D-based materials for advanced sensing applications. Topics of interest include, but are not limited to, the following:

  • Synthesis, functionalization, and structural modification of 2D materials for sensor and biosensor applications.
  • Characterization techniques for assessing surface chemistry, electronic properties, and interfacial interactions.
  • Integration of 2D materials into flexible, stretchable, and wearable sensors.
  • Novel approaches for enhancing sensor performance, including increased sensitivity, improved selectivity, and long-term stability.
  • Theoretical and experimental studies on the interaction of 2D materials with analytes at the nanoscale level.

By tailoring the structural properties and surface chemistry of 2D materials, researchers can develop highly efficient sensing platforms for biomedical, environmental, and industrial applications. We welcome contributions that advance the fundamental understanding and practical implementation of 2D materials in cutting-edge sensing technologies.

Dr. Mikhael Bechelany
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 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. 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

  • 2D materials
  • sensors
  • biosensors
  • health
  • diagnosis
  • food safety
  • defense and security
  • environmental monitoring
  • gas detection

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Published Papers (3 papers)

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Research

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14 pages, 3572 KB  
Article
Graphene-Based Localized Surface Plasmon Metasurface for Mid-Infrared Four-Band Ultra-Narrow Absorbing Sensor
by Min Luo, Zihao Chen and Qiye Wen
Sensors 2025, 25(24), 7477; https://doi.org/10.3390/s25247477 - 9 Dec 2025
Viewed by 715
Abstract
In this paper, the design of a mid-infrared four-band ultra-narrowband wave-absorbing sensor based on the localized equi-excited exciton resonance of graphene metamaterials is presented. The designed super-surface unit has a geometrically symmetric structure and is insensitive to incident light sources with different polarization [...] Read more.
In this paper, the design of a mid-infrared four-band ultra-narrowband wave-absorbing sensor based on the localized equi-excited exciton resonance of graphene metamaterials is presented. The designed super-surface unit has a geometrically symmetric structure and is insensitive to incident light sources with different polarization directions. The absorbing sensor has four resonant wavelengths located at λ1 = 3.172 μm, λ2 = 3.525 μm, λ3 = 3.906 μm, and λ4 = 4.588 μm, with absorption efficiencies of 99.94%, 99.46%, 99.55%, and 98.16%, respectively. In addition, the dynamic tuning of the resonant wavelength and absorption efficiency can be realized by changing the gate voltage or through chemical doping of graphene. Moreover, the wave-absorbing performance can maintain stable absorption over a wide range of incidence angles from 0 to 50°. Finally, the wave-absorbing sensor was subjected to different ambient refractive indices, and the refractive index sensitivities corresponding to the four resonant wavelengths were obtained as 587.5 nm/RIU, 700.0 nm/RIU, 850.0 nm/RIU, and 900.0 nm/RIU, with FOM values of 48.96 RIU−1, 58.34 RIU−1, 53.13 RIU−1, and 28.13 RIU−1, respectively, all of which have superior sensing characteristics. Therefore, this paper enriches the variety of mid-infrared absorber sensors and has a broad application prospect in the fields of wave absorption, sensing, and detection. Full article
(This article belongs to the Special Issue 2D Materials for Advanced Sensing Technology)
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13 pages, 1717 KB  
Article
High-Performance Hydrogen Gas Sensor Based on Pd-Doped MoS2/Si Heterojunction
by Enyu Ma, Zihao Xu, Ankai Sun, Shuo Yang and Jianyu Jiang
Sensors 2025, 25(15), 4753; https://doi.org/10.3390/s25154753 - 1 Aug 2025
Cited by 1 | Viewed by 1602
Abstract
High-performance hydrogen gas sensors have gained considerable interest for their crucial function in reducing H2 explosion risk. Although MoS2 has good potential for chemical sensing, its application in hydrogen detection at room temperature is limited by slow response and incomplete recovery. [...] Read more.
High-performance hydrogen gas sensors have gained considerable interest for their crucial function in reducing H2 explosion risk. Although MoS2 has good potential for chemical sensing, its application in hydrogen detection at room temperature is limited by slow response and incomplete recovery. In this work, Pd-doped MoS2 thin films are deposited on a Si substrate, forming Pd-doped MoS2/Si heterojunctions via magnetron co-sputtering. The incorporation of Pd nanoparticles significantly enhances the catalytic activity for hydrogen adsorption and facilitates more efficient electron transfer. Owing to its distinct structural characteristics and sharp interface properties, the fabricated Pd-doped MoS2/Si heterojunction device exhibits excellent H2 sensing performance under room temperature conditions. The gas sensor device achieves an impressive sensing response of ~6.4 × 103% under 10,000 ppm H2 concentration, representing a 110% improvement compared to pristine MoS2. Furthermore, the fabricated heterojunction device demonstrates rapid response and recovery times (24.6/12.2 s), excellent repeatability, strong humidity resistance, and a ppb-level detection limit. These results demonstrate the promising application prospects of Pd-doped MoS2/Si heterojunctions in the development of advanced gas sensing devices. Full article
(This article belongs to the Special Issue 2D Materials for Advanced Sensing Technology)
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Review

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47 pages, 4702 KB  
Review
Conducting Polymers for Electrochemical Sensing: From Materials and Metrology to Intelligent and Sustainable Biointerfaces
by Giovanna Di Pasquale and Antonino Pollicino
Sensors 2026, 26(3), 908; https://doi.org/10.3390/s26030908 - 30 Jan 2026
Viewed by 173
Abstract
Conducting polymers (CPs) have become cornerstone materials in electrochemical sensors and biosensors due to their mixed ionic–electronic conduction, mechanical softness, and intrinsic biointerface compatibility. This review provides a comprehensive and critical overview of the field, tracing the evolution of CP-based devices from classical [...] Read more.
Conducting polymers (CPs) have become cornerstone materials in electrochemical sensors and biosensors due to their mixed ionic–electronic conduction, mechanical softness, and intrinsic biointerface compatibility. This review provides a comprehensive and critical overview of the field, tracing the evolution of CP-based devices from classical poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS), polyaniline (PANI), and polypyrrole (PPy) electrodes to emerging nanostructured, hybrid, wearable, and transient systems. We discuss fundamental charge-transport mechanisms, doping strategies, structure–property relationships, and the role of morphology and biofunctionalization in dictating sensitivity, selectivity, and stability. Particular emphasis is placed on reliability challenges—including drift, dopant leaching, environmental degradation, and biofouling—and on the current lack of standardized metrology, which hampers cross-study comparability. We propose a framework for rigorous calibration, reference electrode design, and data reporting, enabling quantitative benchmarking across materials and architectures. To support meaningful cross-platform comparison, representative performance envelopes—including conductivity, limit of detection, sensitivity, selectivity strategies, and operational stability—are critically benchmarked across major CP families and sensing modalities. Finally, we explore future directions such as organic mixed ionic–electronic conductors, biohybrid and living polymer interfaces, Artificial Intelligence-driven modeling, and sustainable transient electronics. Full article
(This article belongs to the Special Issue 2D Materials for Advanced Sensing Technology)
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