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Li Z, Liu M, Kumar P, Chang Z, Qi G, He P, Wei Y, Young RJ, Novoselov KS. Interfacial Stress Transfer and Fracture in van der Waals Heterostructures. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024:e2411244. [PMID: 39358939 DOI: 10.1002/adma.202411244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2024] [Revised: 09/11/2024] [Indexed: 10/04/2024]
Abstract
Artificially stacking 2D materials (2DMs) into vdW heterostructures creates materials with properties not present in nature that offer great potential for various applications such as flexible electronics. Properties of such stacked structures are controlled largely by the interfacial interactions and the structural integrity of the 2DMs. In spite of their crucial roles, interfacial stress transfer and the failure mechanisms of the vdW heterostructures, particularly during deformation, have not been well addressed so far. In this work, the interfacial stress transfer and failure mechanisms of a MoS2/graphene vdW heterostructure are studied, through the strain distributions both laterally in individual 2DMs and vertically across different 2DMs revealed in-situ. The fracture of the MoS2 and the associated states of stress and strain are monitored experimentally. This enables various interfacial properties, such as the interfacial shear strength and interfacial fracture energy, to be estimated. Based only on the measured strength and interfacial properties of a single vdW heterostructure, a failure criterion is proposed to predict the failure mechanisms of similar vdW heterostructures with any lateral dimensions. This work provides an insight to the deformation micromechanics of vdW heterostructures that are of great value for their miniaturization and applications, especially in flexible electronics.
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Affiliation(s)
- Zheling Li
- College of Aerospace Engineering, Chongqing University, Chongqing, 400044, China
| | - Mufeng Liu
- National Graphene Institute and Department of Materials, The University of Manchester, Manchester, M13 9PL, UK
| | - Pankaj Kumar
- Institute for Functional Intelligent Materials, National University of Singapore, Singapore, 117575, Singapore
| | - Zhenghua Chang
- Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, 315200, China
- Department of Modern Mechanics, University of Science and Technology of China, Hefei, Anhui, 230026, China
| | - Guocheng Qi
- Institute of Engineering Mechanics, Beijing Jiaotong University, Beijing, 100044, China
| | - Pei He
- School of Physics and Electronics, Central South University, Changsha, Hunan, 410083, China
| | - Yujie Wei
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Robert J Young
- National Graphene Institute and Department of Materials, The University of Manchester, Manchester, M13 9PL, UK
| | - Kostya S Novoselov
- Institute for Functional Intelligent Materials, National University of Singapore, Singapore, 117575, Singapore
- National Graphene Institute and Department of Physics, The University of Manchester, Manchester, M13 9PL, UK
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Liu M, Zhuo Y, Sarycheva A, Gogotsi Y, Bissett MA, Young RJ, Kinloch IA. Deformation of and Interfacial Stress Transfer in Ti 3C 2 MXene-Polymer Composites. ACS APPLIED MATERIALS & INTERFACES 2022; 14:10681-10690. [PMID: 35188382 PMCID: PMC9171720 DOI: 10.1021/acsami.1c21611] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 02/03/2022] [Indexed: 06/14/2023]
Abstract
Transitional metal carbides and nitrides (MXenes) have promise for incorporation into multifunctional composites due to their high electrical conductivity and excellent mechanical and tribological properties. It is unclear, however, to what extent MXenes are also able to improve the mechanical properties of the composites and, if so, what would be the optimal flake size and morphology. Herein, Ti3C2Tx MXene is demonstrated to be indeed a good candidate for mechanical reinforcement in polymer matrices. In the present work, the strain-induced Raman band shifts of mono-/few-/multilayer MXenes flakes have been used to study the mechanical properties of MXene and the interlayer/interfacial stress transfer on a polymer substrate. The mechanical performance of MXene was found to be less dependent upon flake thickness compared to that of graphene. This enables Ti3C2Tx MXene to offer an efficient mechanical reinforcement to a polymer matrix with a flake length of >10 μm and a thickness of 10s of nanometers. Therefore, the degree of exfoliation of MXenes is not as demanding as other two-dimensional (2D) materials for the purpose of mechanical enhancement in polymers. In addition, the active surface chemistry of MXene facilitates possible functionalization to enable a stronger interface with polymers for applications, such as strain engineering and mechanical enhancement, and in materials including membranes, coatings, and textiles.
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Affiliation(s)
- Mufeng Liu
- National
Graphene Institute, Henry Royce Institute and Department of Materials,
School of Natural Sciences, The University
of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Yuling Zhuo
- National
Graphene Institute, Henry Royce Institute and Department of Materials,
School of Natural Sciences, The University
of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Asia Sarycheva
- A.
J. Drexel Nanomaterials Institute, and Department of Materials Science
and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Yury Gogotsi
- A.
J. Drexel Nanomaterials Institute, and Department of Materials Science
and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Mark A. Bissett
- National
Graphene Institute, Henry Royce Institute and Department of Materials,
School of Natural Sciences, The University
of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Robert J. Young
- National
Graphene Institute, Henry Royce Institute and Department of Materials,
School of Natural Sciences, The University
of Manchester, Oxford Road, Manchester M13 9PL, U.K.
| | - Ian A. Kinloch
- National
Graphene Institute, Henry Royce Institute and Department of Materials,
School of Natural Sciences, The University
of Manchester, Oxford Road, Manchester M13 9PL, U.K.
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Fabrication of electrically conductive poly(styrene-b-ethylene-ran-butylene-b-styrene)/multi-walled carbon nanotubes composite fiber and its application in ultra-stretchable strain sensor. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111121] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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