As the sample moves under the tip at velocity v, friction forces (F) between the tip and the sample cause the cantilever to twist. The amount of twisting, measured by the displacement (x) of the tip ...

Students could try to recreate this fun 'friction book' activity in class, possibly as a strength test between groups of students. They could also give additional examples of uses in friction in ...

In addition testing rigs can take numerous geometries but generally take the form of a loaded probe that impinges the sample that travels in a circular or reciprocating fashion. Friction can be ...

Several efforts have been made to realize low-friction surfaces inspired by such natural examples. Specifically, hydrogels on ...