| Abstract Scope |
2D materials-based devices and structures, such as flexible electronics, strain sensors, and nanocomposites, are commonly being exposed to cyclic mechanical loading and interfacial sliding/shearing and therefore have mechanical reliability concerns. Previous studies have revealed high intrinsic strength, wear lifetime, and fatigue life of pristine 2D materials. However, in most real applications, 2D materials contain defects and are mechanically loaded through interfaces/contacts which can lead to premature mechanical failure in the form of fracture and wear. In this talk recent advances aimed at improving the mechanical reliability of 2D materials, such as graphene and transition metal dichalcogenides (TMDs), are presented. This includes interfacial fatigue studies of graphene/polymer, static fatigue studies of TMDs, and high cycle wear studies of graphene and TMDs. In the case of TMDs, a defect passivation/repair treatments is presented which is shown to significantly improve both the static fatigue and wear lifetimes of these monolayer 2D materials. |