Nima Barri, Akshat Rastogi, Md Akibul Islam, Boran Kumral, Pedro Guerra Demingos, Momoko Onodera, Tomoki Machida, Chandra Veer Singh, Tobin Filleter
Understanding wear, a critical factor impacting the reliability of mechanical systems, is vital for nano-, meso-, and macroscale applications. Due to the complex nature of nanoscale wear, the behavior of nanomaterials such as two-dimensional materials under cyclic wear and their surface damage mechanism is yet unexplored. In this study, we used atomic force microscopy coupled with molecular dynamic simulations to statistically examine the cyclic wear behavior of monolayer graphene, MoS2 , and WSe2 . We show that graphene displays exceptional durability and lasts over 3000 cycles at 85% of the applied critical normal load before failure, while MoS2 and WSe2 last only 500 cycles on average...
May 16, 2024: ACS Applied Materials & Interfaces