Electronic transport anisotropy of buckling graphene under uniaxial compressive strain: Ab initio study

Abstract

Electronic transport properties of graphene under uniaxial compressive strain are studied using ab initio calculations. With approximate thermal perturbation, buckling occurs when strain exceeds a threshold, comparing to flat unperturbed structures. Transmissions of flat graphene compressed along zigzag direction (ZCG) and buckled graphene compressed along armchair direction (ACG) are insensitive to strain, whereas those of buckled ZCG and flat ACG are negatively correlated to strain. Flat graphene has anisotropic resistance along the strain direction, while buckling suppresses the anisotropy by releasing the strain. The insensitivity of buckled graphene on strain direction and out-of-plane deformation makes feasible to implement flexible electronics.

Nanomaterial in microwave and millimeterwave engineering research in China

“…It is reported that buckling occurs when strain exceeds a threshold, and that flat graphene has anisotropic resistance along the strain direction, while buckling suppresses the anisotropy by releasing the strain. (c)-(d) Illustration of buckling generation in side views [19].…”

Anisotropic growth of buckling-driven wrinkles in graphene monolayer

“…Therefore, the buckling of graphene is one of the most important mechanical responses [8]. Buckling-driven wrinkles effectively influence the gauge field [9,10], electronic structure [11,12], Raman spectroscopy [13,14], electronic transport [15,16] and carrier mobilities [17] in graphene sheets. In addition, the growing interest in the exploitation of graphene as nanoreinforcement [18,19] makes it important to understand the buckling effect of graphene in these composites [20].…”