I-V Curves of graphene nanoribbons under uniaxial compressive and tensile strain

► We model buckling and elongate GNR systems and discuss the mechanic characteristics. ► We discuss the different strain effect on the transport properties of GNRs with different chirality and width. ► The strain effect on the transport properties is periodically and changed by the GNR width of 3. ► The compressive strain effect has little relationship with the electronic structure of C atoms. ► The tensile strain effect is different with the GNR width and is related with the change of C atom electronic structures.