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2D Materials for Sensor and Biosensor Applications
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2D Materials for Sensor and Biosensor Applications

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

Deadline for manuscript submissions: closed (30 June 2023) | Viewed by 6938

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 materials are ultrathin nanomaterials with exceptional properties. They show outstanding characteristics, including A very high surface-to-volume ratio, extent degree of anisotropic, improved surface charge. and adaptable chemical functionality. Different kinds of 2D materials have attracted attention: graphene and graphene-based 2D materials, transition metal dichalcogenides, layered double hydroxides, silicate clays, Boron nitride, MXenes, and transition metal oxides. They all offer outstanding physicochemical properties and excellent biological functionality.

The aim of this Special Issue is to assemble original research and reviews in the design of 2D-based materials, as well as the investigation of their structural and chemical properties for sensing and biosensing applications. This Special issue will go from the synthesis and the modification to the characterization and the application of 2D materials in sensor and biosensor fields. It will also tackle the design of different functional 2D materials with controlled chemical composition and the functionalization/modification of surfaces for the construction of sensor/biosensor devices. The design of flexible and stretchable sensors/biosensors will also be considered.

All new concepts targeting the optimization of sensor and biosensor parameters by tailoring the structural properties and surface chemistry of 2D materials in order to achieve increased sensitivity, higher selectivity, and enhanced stability will be examined.

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 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

  • 2D materials
  • sensor
  • biosensor
  • health
  • diagnosis
  • food safety
  • defense security
  • environmental monitoring
  • gas detection

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Published Papers (2 papers)

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14 pages, 1822 KiB  
Article
Probe Contact Force Monitoring during Conductivity Measurements of the Left Atrial Appendage to Support the Design of Novel Diagnostic and Therapeutic Procedures
by Hamza Benchakroun, Niko Ištuk, Eoghan Dunne, Muhammad Adnan Elahi, Tony O’Halloran, Martin O’Halloran and Declan O’Loughlin
Sensors 2022, 22(19), 7171; https://doi.org/10.3390/s22197171 - 21 Sep 2022
Cited by 1 | Viewed by 3487
Abstract
The electrical properties of many biological tissues are freely available from the INRC and the IT’IS databases. However, particularly in lower frequency ranges, few studies have investigated the optimal measurement protocol or the key confounders that need to be controlled, monitored, and reported. [...] Read more.
The electrical properties of many biological tissues are freely available from the INRC and the IT’IS databases. However, particularly in lower frequency ranges, few studies have investigated the optimal measurement protocol or the key confounders that need to be controlled, monitored, and reported. However, preliminary work suggests that the contact force of the measurement probe on the tissue sample can affect the measurements. The aim of this paper is to investigate the conductivity change due to the probe contact force in detail. Twenty ex vivo bovine heart samples are used, and conductivity measurements are taken in the Left Atrial Appendage, a common target for medical device developments. The conductivity measurements reported in this work (between 0.14 S/m and 0.24 S/m) align with the literature. The average conductivity is observed to change by −21% as the contact force increases from 2 N to 10 N. In contrast, in conditions where the fluid concentration in the measurement area is expected to be lower, very small changes are observed (less than 2.5%). These results suggest that the LAA conductivity is affected by the contact force due to the fluid concentration in the tissue. This work suggests that contact force should be controlled for in all future experiments. Full article
(This article belongs to the Special Issue 2D Materials for Sensor and Biosensor Applications)
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Review

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33 pages, 8315 KiB  
Review
Room Temperature Chemiresistive Gas Sensors Based on 2D MXenes
by Ali Mirzaei, Myoung Hoon Lee, Haniyeh Safaeian, Tae-Un Kim, Jin-Young Kim, Hyoun Woo Kim and Sang Sub Kim
Sensors 2023, 23(21), 8829; https://doi.org/10.3390/s23218829 - 30 Oct 2023
Cited by 12 | Viewed by 2381
Abstract
Owing to their large surface area, two-dimensional (2D) semiconducting nanomaterials have been extensively studied for gas-sensing applications in recent years. In particular, the possibility of operating at room temperature (RT) is desirable for 2D gas sensors because it significantly reduces the power consumption [...] Read more.
Owing to their large surface area, two-dimensional (2D) semiconducting nanomaterials have been extensively studied for gas-sensing applications in recent years. In particular, the possibility of operating at room temperature (RT) is desirable for 2D gas sensors because it significantly reduces the power consumption of the sensing device. Furthermore, RT gas sensors are among the first choices for the development of flexible and wearable devices. In this review, we focus on the 2D MXenes used for the realization of RT gas sensors. Hence, pristine, doped, decorated, and composites of MXenes with other semiconductors for gas sensing are discussed. Two-dimensional MXene nanomaterials are discussed, with greater emphasis on the sensing mechanism. MXenes with the ability to work at RT have great potential for practical applications such as flexible and/or wearable gas sensors. Full article
(This article belongs to the Special Issue 2D Materials for Sensor and Biosensor Applications)
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