Anomalous fracture in two-dimensional rhenium disulfide

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

2 Scopus Citations
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Author(s)

  • Fangyuan Zheng
  • Qingming Deng
  • Lok Wing Wong
  • Yuan Cai
  • Ning Wang
  • Shu Ping Lau
  • Jiong Zhao

Detail(s)

Original languageEnglish
Article numbereabc2282
Journal / PublicationScience Advances
Volume6
Issue number47
Online published18 Nov 2020
Publication statusPublished - Nov 2020

Link(s)

Abstract

Low-dimensional materials usually exhibit mechanical properties from those of their bulk counterparts. Here, we show in two-dimensional (2D) rhenium disulfide (ReS2) that the fracture processes are dominated by a variety of previously unidentified phenomena, which are not present in bulk materials. Through direct transmission electron microscopy observations at the atomic scale, the structures close to the brittle crack tip zones are clearly revealed. Notably, the lattice reconstructions initiated at the postcrack edges can impose additional strain on the crack tips, modifying the fracture toughness of this material. Moreover, the monatomic thickness allows the restacking of postcrack edges in the shear strain–dominated cracks, which is potentially useful for the rational design of 2D stacking contacts in atomic width. Our studies provide critical insights into the atomistic processes of fracture and unveil the origin of the brittleness in the 2D materials.

Research Area(s)

Citation Format(s)

Anomalous fracture in two-dimensional rhenium disulfide. / Huang, Lingli; Zheng, Fangyuan; Deng, Qingming; Thi, Quoc Huy; Wong, Lok Wing; Cai, Yuan; Wang, Ning; Lee, Chun-Sing; Lau, Shu Ping; Ly, Thuc Hue; Zhao, Jiong.

In: Science Advances, Vol. 6, No. 47, eabc2282, 11.2020.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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