Mechanical and thermal characterizations of nanoporous two-dimensional boron nitride membranes.

ABSTRACT: Hexagonal boron nitride (h-BN) is a promising 2D material due to its outstanding mechanical and thermal properties. In the present study, we use molecular dynamics simulations to investigate the influence of porosity and temperature on the mechanical characteristics of h-BN based on uniaxial and biaxial tensions. Meanwhile, the progression of the microstructure of h-BN up to fracture is studied in order to clarify its fractures mechanism during the tension process. Our results reveal that depending on the porosity and tensile direction, the phase transition occurs more or less. The strength, and Young's modulus of h-BN membranes reduce as increasing porosity. Due to the presence of the pores, the most substantial stresses will be centred around the pores site in the tensile test. Then the

SUBMITTER: Pham VT 

PROVIDER: S-EPMC9012750 | biostudies-literature | 2022 Apr

REPOSITORIES: biostudies-literature