Double-Spiral Hexagonal Boron Nitride and Shear Strained Coalescence BoundaryClick to copy article linkArticle link copied!
- Hyo Ju ParkHyo Ju ParkSchool of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaCenter for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of KoreaMore by Hyo Ju Park
- Roland Yingjie TayRoland Yingjie TaySchool of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeTemasek Laboratories@NTU, 50 Nanyang Avenue, Singapore 639798, SingaporeMore by Roland Yingjie Tay
- Xiao WangXiao WangCenter for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of KoreaMore by Xiao Wang
- Wen ZhaoWen ZhaoCenter for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of KoreaMore by Wen Zhao
- Jung Hwa KimJung Hwa KimSchool of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaMore by Jung Hwa Kim
- Rodney S. RuoffRodney S. RuoffSchool of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaCenter for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of KoreaDepartment of Chemistry, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaMore by Rodney S. Ruoff
- Feng DingFeng DingSchool of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaCenter for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of KoreaMore by Feng Ding
- Edwin Hang Tong Teo*Edwin Hang Tong Teo*E-mail: [email protected]School of Electrical and Electronic Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeSchool of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, SingaporeMore by Edwin Hang Tong Teo
- Zonghoon Lee*Zonghoon Lee*E-mail: [email protected]School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of KoreaCenter for Multidimensional Carbon Materials, Institute for Basic Science (IBS), Ulsan 44919, Republic of KoreaMore by Zonghoon Lee
Abstract

Among the different growth mechanisms for two-dimensional (2D) hexagonal boron nitride (h-BN) synthesized using chemical vapor deposition, spiraling growth of h-BN has not been reported. Here we report the formation of intertwined double-spiral few-layer h-BN that is driven by screw dislocations located at the antiphase boundaries of monolayer domains. The microstructure and stacking configurations were studied using a combination of dark-field and atomic resolution transmission electron microscopy. Distinct from other 2D materials with single-spiral structures, the double-spiral structure enables the intertwined h-BN layers to preserve the most stable AA′ stacking configuration. We also found that the occurrence of shear strains at the boundaries of merged spiral islands is dependent on the propagation directions of encountering screw dislocations and presented the strained features by density functional theory calculations and atomic image simulations. This study unveils the double-spiral growth of 2D h-BN multilayers and the creation of a shear strain band at the coalescence boundary of two h-BN spiral clusters.
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