Fig. 4: On-chip uniaxial tensile testing of graphene.
From: Definitive engineering strength and fracture toughness of graphene through on-chip nanomechanics

a Series of ‘dogbone’ TOC structures with different actuator lengths. The inset is a zoomed SEM micrograph of a dogbone graphene specimen for the TOC test. b A series of ‘Rect’ TOC structures with a variety of actuator lengths. The inset is a zoomed view of a rectangular graphene specimen in the TOC configuration. The red scale bar refers to 20 µm and the white scale bar, is 10 µm.