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Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials

Since the success of monolayer graphene exfoliation, two-dimensional (2D) materials have been extensively studied due to their unique structures and unprecedented properties. Among these fascinating studies, the most predominant focus has been on their atomic structures, defects, and mechanical beha...

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Detalles Bibliográficos
Autores principales: Xiong, Zixin, Zhong, Lei, Wang, Haotian, Li, Xiaoyan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7961825/
https://www.ncbi.nlm.nih.gov/pubmed/33802523
http://dx.doi.org/10.3390/ma14051192
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author Xiong, Zixin
Zhong, Lei
Wang, Haotian
Li, Xiaoyan
author_facet Xiong, Zixin
Zhong, Lei
Wang, Haotian
Li, Xiaoyan
author_sort Xiong, Zixin
collection PubMed
description Since the success of monolayer graphene exfoliation, two-dimensional (2D) materials have been extensively studied due to their unique structures and unprecedented properties. Among these fascinating studies, the most predominant focus has been on their atomic structures, defects, and mechanical behaviors and properties, which serve as the basis for the practical applications of 2D materials. In this review, we first highlight the atomic structures of various 2D materials and the structural and energy features of some common defects. We then summarize the recent advances made in experimental, computational, and theoretical studies on the mechanical properties and behaviors of 2D materials. We mainly emphasized the underlying deformation and fracture mechanisms and the influences of various defects on mechanical behaviors and properties, which boost the emergence and development of topological design and defect engineering. We also further introduce the piezoelectric and flexoelectric behaviors of specific 2D materials to address the coupling between mechanical and electronic properties in 2D materials and the interactions between 2D crystals and substrates or between different 2D monolayers in heterostructures. Finally, we provide a perspective and outlook for future studies on the mechanical behaviors and properties of 2D materials.
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spelling pubmed-79618252021-03-17 Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials Xiong, Zixin Zhong, Lei Wang, Haotian Li, Xiaoyan Materials (Basel) Review Since the success of monolayer graphene exfoliation, two-dimensional (2D) materials have been extensively studied due to their unique structures and unprecedented properties. Among these fascinating studies, the most predominant focus has been on their atomic structures, defects, and mechanical behaviors and properties, which serve as the basis for the practical applications of 2D materials. In this review, we first highlight the atomic structures of various 2D materials and the structural and energy features of some common defects. We then summarize the recent advances made in experimental, computational, and theoretical studies on the mechanical properties and behaviors of 2D materials. We mainly emphasized the underlying deformation and fracture mechanisms and the influences of various defects on mechanical behaviors and properties, which boost the emergence and development of topological design and defect engineering. We also further introduce the piezoelectric and flexoelectric behaviors of specific 2D materials to address the coupling between mechanical and electronic properties in 2D materials and the interactions between 2D crystals and substrates or between different 2D monolayers in heterostructures. Finally, we provide a perspective and outlook for future studies on the mechanical behaviors and properties of 2D materials. MDPI 2021-03-03 /pmc/articles/PMC7961825/ /pubmed/33802523 http://dx.doi.org/10.3390/ma14051192 Text en © 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Xiong, Zixin
Zhong, Lei
Wang, Haotian
Li, Xiaoyan
Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials
title Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials
title_full Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials
title_fullStr Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials
title_full_unstemmed Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials
title_short Structural Defects, Mechanical Behaviors, and Properties of Two-Dimensional Materials
title_sort structural defects, mechanical behaviors, and properties of two-dimensional materials
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7961825/
https://www.ncbi.nlm.nih.gov/pubmed/33802523
http://dx.doi.org/10.3390/ma14051192
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