2D materials always suffer from ultralow toughness due to the lack of intrinsic toughening mechanism. Based on in situ tensile test, we show that single-crystal monolayer h-BN is the toughest 2D material measured to date. The effective energy release …
An apparent paradox is found in freestanding (FS) indentation tests of 2D materials: Although the assumption of pre-stretched 2D materials with a clamped condition in FS indentation tests is contradicted with both numerical and experimental …
Non-destructive evaluation (NDE) of elastic modulus in materials has broad applications in fields such as geological exploration, quality evaluation and medical diagnosis. A key to these techniques is to solve the inverse problem of identifying the …