Sunwoo Lee

TL;DR: It is shown that the elastic stiffness of CVD-graphene is identical to that of pristine graphene if postprocessing steps avoid damage or rippling, and its strength is only slightly reduced despite the existence of grain boundaries.

TL;DR: It is reported that the two-dimensional elastic modulus of graphene is maintained even at a high density of sp(3)-type defects, which provides important basic information for the rational design of composites and other systems utilizing the high modulus and strength of graphene.

TL;DR: In this article, the authors report that the two-dimensional elastic modulus of graphene is maintained even at a high density of sp(3)-type defects and that the breaking strength of defective graphene is only 14% smaller than its pristine counterpart in the sp3-defect regime.

TL;DR: Hot electrons become spatially localized at the centre of the graphene layer, resulting in a 1,000-fold enhancement in thermal radiation efficiency and paving the way towards the realization of commercially viable large-scale, atomically thin, flexible and transparent light emitters and displays with low operation voltage and graphene-based on-chip ultrafast optical communications.

TL;DR: Graphene voltage-controlled oscillators built on micrometre-size, atomically thin graphene nanomechanical resonators, whose frequencies can be electrostatically tuned by as much as 14% exhibit frequency stability and a modulation bandwidth sufficient for the modulation of radiofrequency carrier signals.