| About this Abstract |
| Meeting |
2022 TMS Annual Meeting & Exhibition
|
| Symposium
|
Functional Nanomaterials: Functional Low-Dimensional (0D, 1D, 2D) Materials 2022
|
| Presentation Title |
Intrinsic Fatigue of Graphene and Molybdenum Disulfide |
| Author(s) |
Tobin Filleter |
| On-Site Speaker (Planned) |
Tobin Filleter |
| Abstract Scope |
With the ever-increasing demand for the long-term reliability of devices and structures, the fatigue behavior of 2D materials necessitates careful investigation. Here we designed an intrinsic fatigue study of suspended two-dimensional (2D) materials based on a modified atomic force microscopy technique. Pristine graphene exhibited a remarkable fatigue life of more than one billion cycles at large stress levels, which is higher than any other materials reported to date [1]. Due to the defective nature of MoS2, its lifetime is highly scattered under the same stress conditions. Surprisingly, both pristine graphene and MoS2 did not reveal any obvious progressive damage during the fatigue loading process, as manifested by its non-changing morphology and non-degraded mechanical properties, as well as atomic structures examination by molecular dynamics simulations.
[1] T. Cui et al., “Fatigue of graphene", Nature Materials, 19 (2020) 405-411 |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Nanotechnology, Mechanical Properties, Thin Films and Interfaces |