Atomistic measurement and modeling of intrinsic fracture toughness of two-dimensional materials.

ABSTRACT: Quantifying the intrinsic mechanical properties of two-dimensional (2D) materials is essential to predict the long-term reliability of materials and systems in emerging applications ranging from energy to health to next-generation sensors and electronics. Currently, measurements of fracture toughness and identification of associated atomistic mechanisms remain challenging. Herein, we report an integrated experimental-computational framework in which in-situ high-resolution transmission electron microscopy (HRTEM) measurements of the intrinsic fracture energy of monolayer MoS₂ and MoSe₂ are in good agreement with atomistic model predictions based on an accurately parameterized interatomic potential. Changes in crystalline structures at the crack tip and crack edges, as

SUBMITTER: Zhang X 

PROVIDER: S-EPMC9659395 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature