The study investigates the elastic properties of chemically derived single graphene sheets, specifically those obtained through the chemical reduction of graphene oxide. The researchers determined the elastic modulus of these sheets using tip-induced deformation experiments, finding an extraordinary stiffness (0.25 TPa) that approaches that of pristine graphene. Despite their defect content, the sheets exhibit high flexibility and resilience, with built-in tensions significantly lower than those in mechanically exfoliated graphene. The sheets maintain their electrical conductivity after multiple deformations, with the conductivity scaling inversely with the elastic modulus. This suggests that oxygen bridges play a dual role in reinforcing bonds while impeding charge transport. The mechanical and electrical stability of the sheets under deformation highlights their potential for applications in nanoelectromechanical devices and sensors.The study investigates the elastic properties of chemically derived single graphene sheets, specifically those obtained through the chemical reduction of graphene oxide. The researchers determined the elastic modulus of these sheets using tip-induced deformation experiments, finding an extraordinary stiffness (0.25 TPa) that approaches that of pristine graphene. Despite their defect content, the sheets exhibit high flexibility and resilience, with built-in tensions significantly lower than those in mechanically exfoliated graphene. The sheets maintain their electrical conductivity after multiple deformations, with the conductivity scaling inversely with the elastic modulus. This suggests that oxygen bridges play a dual role in reinforcing bonds while impeding charge transport. The mechanical and electrical stability of the sheets under deformation highlights their potential for applications in nanoelectromechanical devices and sensors.