Cheng Peng

TL;DR: The combined experiment and modelling verify the applicability of the classic Griffith theory of brittle fracture to graphene and quantifies the essential fracture properties of graphene and provides mechanistic insights into the mechanical failure of graphene.

TL;DR: Traditional single-fiber pull-out type experiments were conducted on individual multiwalled carbon nanotubes embedded in an epoxy matrix using a novel technique and the results are qualitatively consistent with the predictions of continuum fracture mechanics models.

TL;DR: A novel micro-mechanical device (MMD) is demonstrated to perform quantitative in situ tensile tests on individual metallic nanowires inside a transmission electron microscope (TEM) to reveal the underlying deformation and damage mechanisms for metals at the nanoscale.

TL;DR: In this article, a silicon microdevice is used for the in situ quantitative mechanical characterization of single 1-D nanomaterials within a scanning electron microscope equipped with a quantitative nanoindenter.

TL;DR: From the analysis of fracture surfaces, sample morphologies and corresponding stress-strain curves, the competition between deformation and fracture mechanisms controlled by initial defects density and by the probability of dislocation interactions is attributed to this intriguing size-dependent fracture mode transition.