English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Tools annual

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Presents the access of premium content as premium feature

Premium Content

Global: Zendy Plus annual

Global: Zendy Free Plan

With unique distorted 1T structure and the associated in-plane anisotropicproperties, mono- and few-layer ReX2 (X=S, Se) have recently attractedparticular interest. Based on experiment and first-principles calculations, weinvestigate the fracture behavior of ReX2. We find that the cleaved edges ofReX2 flakes usually form an angle of ~120{\deg} or ~60{\deg}. In order tounderstand such phenomenon, we perform comprehensive investigations on theuniaxial tensile stress-strain relation of monolayer and multi-layer ReX2sheets. Our numerical calculation shows that the particular cleaved edges ofReX2 flakes are caused by unique anisotropic ultimate tensile strengths andcritical strains. We also calculate the stress-strain relation of WTe2, whichexplains why their cleaved edges are not corresponding to the principle axes.Our proposed mechanism about the fracture angle has also been supported by thecalculated cleavage energies and surface energies for different edge surfaces.

Cleavage Tendency of Anisotropic Two Dimensional Materials: ReX2 (X=S, Se) and WTe2