11/23/2016 · The evolving contact quality is critical for explaining the time-dependent friction of configurationally flexible interfaces. … The evolving quality of frictional contact with graphene.
contact area) evolves, the quality (in this case, the local pinning state of individual atoms and the overall commensurability) also evolves in frictional sliding on graphene. Moreover, the effects…
While the quantity of atomic-scale contacts (true contact area) evolves, the quality (in this case, the local pinning state of individual atoms and the overall commensurability) also evolves in…
While the quantity of atomic-scale contacts (true contact area) evolves, the quality (in this case, the local pinning state of individual atoms and the overall commensurability) also evolves in…
Atomic force analysis reveals that the evolution of static friction is a manifestation of the natural tendency for thinner and less-constrained graphene to re-adjust its configuration as a direct consequence of its greater flexibility. That is, the tip atoms become more strongly pinned, and show greater synchrony in their stick–slip behaviour.
Atomic force analysis reveals that the evolution of static friction is a manifestation of the natural tendency for thinner and less-constrained graphene to re-adjust its configuration as a direct consequence of its greater flexibility. That is, the tip atoms become more strongly pinned, and show greater synchrony in their stick–slip behaviour.
Recently, an international team of researchers from Germany, China and USA addressed another feature in the frictional behavior of graphene : a monolayer graphene (loosely attached to the substrate) exhibits higher friction than multilayer graphene and friction increases with sliding. … “The evolving quality of frictional contact with …
“Most of the change in friction is actually due to change in the quality of contact, not the true contact area.” The researchers found that the act of sliding causes graphene atoms to make better contact with the object sliding along it; this increase in the quality of contact leads to the increase in friction as sliding proceeds and eventually levels off.
