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Crystals
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Review Papers in Two-Dimensional Materials
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Review Papers in Two-Dimensional Materials

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystalline Materials".

Deadline for manuscript submissions: closed (30 April 2023) | Viewed by 14246

Special Issue Editors

Dr. Zhimin Fan

E-Mail Website
Guest Editor
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
Interests: MXenes; EMI shielding; smart actuator; energy storage
Dr. Marius V. Costache

E-Mail Website
Guest Editor
Department of Condensed Matter Physics, University of Barcelona (UB), 08193 Catalonia, Spain
Interests: spintronics; 2D materials; magnonics; graphene
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Graphene is a strategic emerging material in the 21st century and has been highly valued worldwide. Initially, Konstantin Novoselov, Andre Geim, and co-workers discovered the mechanically exfoliated graphene in 2004. Since then, the booming, well-established synthetic methods from graphene have brought experimental realizations of diverse 2D materials, such as transition metal dichalcogenides (TMDs), hexagonal boron nitride (h-BN), black phosphorus (BP), MXenes, graphitic carbon nitride (g-C3N4), layered metal oxides, and layered double hydroxides (LDHs). Given their outstanding physical, chemical, electronic, and optical properties, 2D materials have attracted tremendous research interest in the fields of nanotechnology, condensed matter physics, material science, chemistry, and biomedicine.

In the light of increasing advances in 2D materials and their great potential applications, we are organizing this Special Issue entitled “Review Papers in Two-Dimensional Materials” to publish review papers in this field. 

Dr. Zhimin Fan
Dr. Marius V. Costache
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 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. Crystals is an international peer-reviewed open access monthly 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.

Published Papers (4 papers)

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Review

14 pages, 5199 KiB  
Review
The Renaissance and Golden Age of Epitaxial Dry Germanene
by Marco Minissale, Eric Salomon, Federica Pappalardo, Céline Martin, Matthias Muntwiler, Thierry Angot and Guy Le Lay
Crystals 2023, 13(2), 221; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst13020221 - 25 Jan 2023
Cited by 2 | Viewed by 1437
Abstract
Germanene, as an artificial graphene-like near room temperature topological insulator, compatible with ubiquitous silicon technology, is potentially the most promising artificial Xene for ultra-scale nanoelectronics. Here, we follow its emergence and development when prepared in situ under ultra-high vacuum in clean and controlled [...] Read more.
Germanene, as an artificial graphene-like near room temperature topological insulator, compatible with ubiquitous silicon technology, is potentially the most promising artificial Xene for ultra-scale nanoelectronics. Here, we follow its emergence and development when prepared in situ under ultra-high vacuum in clean and controlled conditions by dry epitaxy on prominent metal surfaces (e.g., aluminum, silver, gold). We describe its predicted electronic properties and its birth in 2014, even if it was just a renaissance, as it was only understood after 51 years after an undeciphered birth certificate lost in oblivion. We emphasize the lifting of germanene flakes from an aluminum template with the tip of a scanning tunneling microscope, and their repositioning to form bilayer germanene with Bernal stacking. Finally, we discuss the growth of monolayer germanene in a single phase harboring Dirac fermions, following a bottom-up synthesis strategy by segregation on a gold thin film in epitaxy on a germanium support. Full article
(This article belongs to the Special Issue Review Papers in Two-Dimensional Materials)
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20 pages, 4532 KiB  
Review
The Recent Progress of Two-Dimensional Transition Metal Dichalcogenides and Their Phase Transition
by Hui Chen, Jiwei Zhang, Dongxiao Kan, Jiabei He, Mengshan Song, Jianhua Pang, Songrui Wei and Kaiyun Chen
Crystals 2022, 12(10), 1381; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst12101381 - 28 Sep 2022
Cited by 7 | Viewed by 5672
Abstract
Graphene is attracting much attention in condensed matter physics and material science in the two-dimensional(2D) system due to its special structure, and mechanical and electronic properties. However, the lack of electronic bandgap and uncontrollable phase structure greatly limit its application in semiconductors, such [...] Read more.
Graphene is attracting much attention in condensed matter physics and material science in the two-dimensional(2D) system due to its special structure, and mechanical and electronic properties. However, the lack of electronic bandgap and uncontrollable phase structure greatly limit its application in semiconductors, such as power conversion devices, optoelectronic devices, transistors, etc. During the past few decades, 2D transition metal dichalcogenides (TMDs) with much more phase structures have attracted intensive research interest in fundamental studies and practical applications for energy storage, as catalysts, and in piezoelectricity, energy harvesting, electronics, optoelectronic, and spintronics. The controllable phase transition also provides another degree of freedom to pave the way for more novel devices. In this review, we introduce the abundant phase structures of 2D-TMDs, including 2H, 1T, 1T’ and charge density waves, and highlight the corresponding attractive properties and applications of each phase. In addition, all the possible methods to trigger the phase transition in TMDs are systematically introduced, including strain engineering, electron doping, alloying, thermal, electric field, and chemical absorption. Finally, the outlook of future opportunities in TMD phase transitions and the corresponding challenges, including both the synthesis and applications, are also addressed. Full article
(This article belongs to the Special Issue Review Papers in Two-Dimensional Materials)
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16 pages, 6923 KiB  
Review
MXene Film Prepared by Vacuum-Assisted Filtration: Properties and Applications
by Jingfeng Wang, Jiabei He, Dongxiao Kan, Kaiyun Chen, Mengshan Song and Wangtu Huo
Crystals 2022, 12(8), 1034; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst12081034 - 26 Jul 2022
Cited by 15 | Viewed by 4409
Abstract
MXene (Ti3C2Tx) film prepared by vacuum-assisted filtration (V-MXene film) is the most common 2D MXene macroscopic assembly with ultra-high electrical conductivity, tunable interlayer space, diverse surface chemical properties, favorable mechanical properties and so on, showing great commercial [...] Read more.
MXene (Ti3C2Tx) film prepared by vacuum-assisted filtration (V-MXene film) is the most common 2D MXene macroscopic assembly with ultra-high electrical conductivity, tunable interlayer space, diverse surface chemical properties, favorable mechanical properties and so on, showing great commercial value in the fields of energy storage, electromagnetic interference shielding and actuators and so on. This paper focuses on the preparation, properties and applications of V-MXene film, objectively reviews and evaluates the important research progress of V-MXene film in recent years and analyzes the main problems at present. In addition, the development direction and trend of V-MXene film in the future are prospected from the aspects of preparation, property control and application fields, which provide guidance and inspiration for the further development of functional MXene-based films and make contributions to the progress of MXene technology. Full article
(This article belongs to the Special Issue Review Papers in Two-Dimensional Materials)
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19 pages, 22188 KiB  
Review
3D Porous MXene Films for Advanced Electromagnetic Interference Shielding and Capacitive Storage
by Haoxiang Ma, Changzheng Li, Yang Yang and Zhimin Fan
Crystals 2022, 12(6), 780; https://0-doi-org.brum.beds.ac.uk/10.3390/cryst12060780 - 27 May 2022
Cited by 2 | Viewed by 2350
Abstract
The construction of abundant pore channels between the layers of Ti3C2Tx MXene film is an important approach to fully exploit the 2D macromolecular properties of MXene (Ti3C2Tx), which is of great significance [...] Read more.
The construction of abundant pore channels between the layers of Ti3C2Tx MXene film is an important approach to fully exploit the 2D macromolecular properties of MXene (Ti3C2Tx), which is of great significance for further realizing the practical application of MXene macroscopic assemblies in the field of electromagnetic interference shielding and capacitive storage. However, there is still a lack of systematic introductions and prospects of this field, thus far. In this review, starting from the preparation of MXene macroscopic assemblies, the 3D porous MXene films, constructed by sacrificial templating, vapor foaming, and light foaming, as well as their corresponding properties of electromagnetic interference shielding and capacitive storage, are introduced. In addition, the current bottlenecks and great challenges of 3D porous MXene films are deeply analyzed, and effective solutions for future application development trends are proposed. Full article
(This article belongs to the Special Issue Review Papers in Two-Dimensional Materials)
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