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Research and Design of Two-Dimensional Functional Materials

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Materials Science and Engineering".

Deadline for manuscript submissions: 20 October 2025 | Viewed by 441

Special Issue Editor


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Guest Editor
Division of Science, Yale-NUS College, 16 College Ave West, Singapore 138527, Singapore
Interests: 2D systems; ionic transport; quantum devices

Special Issue Information

Dear Colleagues,

The field of two-dimensional (2D) materials science has garnered significant attention in recent years due to these materials' extraordinary mechanical, chemical, and electronic properties. The rapidly growing family of 2D systems exhibits potential in various applications, including energy storage, sensors, catalysis, and nanoelectronics. Two-dimensional functional materials leverage the advantages of reduced dimensionality to obtain application-specific properties, such as conductivity, magnetism, and optical or catalytic activity. Their tailored performance enables innovations in diverse fields such as optoelectronics, photonics, and energy conversion.

This Special Issue of Applied Sciences will focus on the latest research on and advancements in the synthesis, characterization, and application of 2D functional materials. We will explore the fundamental mechanisms that govern their properties and investigate innovative approaches to harness these materials for practical use. Contributions spanning theoretical models, experimental techniques, and device implementation are encouraged, particularly emphasizing novel functionalities and interdisciplinary applications.

We invite researchers from various disciplines to submit their work to this Special Issue, fostering collaboration and accelerating progress in this exciting field of materials science. In this Special Issue, original research articles and reviews are

welcome. Research areas may include (but are not limited to) the following:

  1. Optical properties of 2D materials;
  2. Exotic phases;
  3. Electronic properties;
  4. Catalysis;
  5. Functional heterostructures;
  6. ML-assisted material discovery;
  7. Advances in computational methods;
  8. Plasmonics;
  9. Superconductivity;
  10. Membranes and responsive interfaces.

We look forward to receiving your contributions.

Dr. Aleksandr Rodin
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. Applied Sciences 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

  • application-driven research
  • material discovery
  • 2D materials
  • applied materials science
  • 2D heterostructures
  • functional 2D materials

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Published Papers (1 paper)

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Research

14 pages, 1919 KiB  
Article
Non-Invasive Hydration Monitoring with a Graphene Dual Sweat Sensor
by Joseph J. Q. Ng, Sergey Tkachev, Glendon C. F. Sim, Luiza Felippi de Lima, Gavin K. W. Koon, Alexandre P. Lima and Antonio H. Castro Neto
Appl. Sci. 2025, 15(9), 4970; https://doi.org/10.3390/app15094970 - 30 Apr 2025
Viewed by 264
Abstract
Maintaining optimal hydration is critical for physiological function, particularly during intense physical activities, in which dehydration or overhydration can impair performance and recovery. Traditional methods for monitoring hydration status, such as body weight changes, bioelectrical impedance, and urine specific gravity, are limited by [...] Read more.
Maintaining optimal hydration is critical for physiological function, particularly during intense physical activities, in which dehydration or overhydration can impair performance and recovery. Traditional methods for monitoring hydration status, such as body weight changes, bioelectrical impedance, and urine specific gravity, are limited by inconvenience and lack of real-time capability. This study introduces a novel graphene-based dual-sensing electrochemical sensor for the rapid and non-invasive quantification of sodium and potassium concentrations in human sweat, key biomarkers of hydration status. Leveraging graphene’s exceptional conductivity and functionalization potential, the sensor employs open-circuit potentiometry (OCP) to achieve high sensitivity and selectivity in detecting sodium and potassium. The sensor performance was validated against that of a commercial analyzer and ICP-OES, demonstrating a near-Nernstian response (61.93 mV/decade for sodium and 61.21 mV/decade for potassium detection) and a linear detection range spanning from 0.1 mM to 100 mM for both sodium and potassium monitoring in sweat. Sweat samples from an athlete during endurance exercise confirmed the sensor’s reliability, with results closely matching those of ICP-OES and outperforming the commercial analyzer in regards to accuracy and sample efficiency. This work represents a cross-validated study of a sweat-based sensor with a second analytical technique, highlighting its potential as a real-time hydration monitoring tool for use in sports and beyond. Full article
(This article belongs to the Special Issue Research and Design of Two-Dimensional Functional Materials)
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