| AVS 65th International Symposium & Exhibition | |
| Tribology Focus Topic | Monday Sessions |
| Session TR+AS+NS+SS-MoM |
| Session: | Tribology Focus Session |
| Presenter: | Diana Berman, University of North Texas |
| Authors: | D. Berman, University of North Texas A. Erdemir, Argonne National Laboratory A.V. Sumant, Argonne National Laboratory |
| Correspondent: | Click to Email |
Friction is an important aspect of many areas of everyday life. Varieties in mechanical systems from nano to macroscale and efforts to minimize energy losses intersect with challenges of controlling the friction. The popularity of recently discovered 2D materials and their usefulness for multiple applications enabled understanding the friction at a more fundamental level and opened new routes for manipulating friction to superlubricity or near zero friction values.
Here, we review the basic mechanisms that complies the frictional energy dissipation, such as wear, molecular deformation, thermal effect, electronic effect, bonding, environment and chemistry, phonons, and structural effect. We present the case studies highlighting how these mechanisms are controlled in 2D materials. Finally, we highlight recent advances in implementing 2D materials for friction reduction to superlubricity across scales from nano- up to macroscale contacts. We show that nanoscale superlubricity mechanisms originating from the formation of frictionless nanoscale systems, as in case of graphene-nanodiamond scrolls and carbon nanoonion structures, can be successfully transferred to macroscale effects. Development of 2D materials opened a new pathway for manipulating friction, which makes superlubric friction today’s reality.
References:
[1] D. Berman, et al., Approaches for Achieving Superlubricity in Two-Dimensional Materials, ACS Nano (2018)
[2] D. Berman, et al., special issue in Diamond and Related Materials, 54, 91 (2015).
[3] D. Berman, et al., Materials Today 17 (2014) 31-42.
[4] D. Berman, et al., Science, 348 (2015) 1118-1122