Oscillation-based methods for actuation and manipulation of nano-objects

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in AIP Conference Proceedings 1882, 020056 (2017) and may be found at https://doi.org/10.1063/1.5001635.We discuss how oscillations can be used for fixation or manipulation of nano-objects or producing nano-drives. The underlying principles are scale-invariant and principally can be scaled down up to the molecular scale. The main underlying principle of fixation and actuation occurs to be symmetry breaking of an oscillating system. From this unifying standpoint, a series of actuation principles are discussed as dragging, ratchets, micro walking, friction-inertia actuators, oscillation tweezers, flagella motors for propulsion in liquids as well as some recently proposed actuation principles

Force-displacement relation in a tangential frictional contact with adhesion

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in AIP Conference Proceedings 2051, 020244 (2018) and may be found at https://doi.org/10.1063/1.5083487.We consider tangential contact between a rigid cylinder and elastic half-space in the presence of adhesion and Coulomb’s frictional force. In the limit of very small range of adhesive interaction, the main governing dimensionless parameters are identified and it is shown that the shape of the relation between the normalized force and normalized displacement is function of only one system parameter closely related to the Tabor parameter. However, the qualitative behavior is the same for arbitrary values of the Tabor parameter: the force monotonously increases from zero to the maximum value corresponding to the complete sliding. This behavior is qualitatively different from that known in the case of non-adhesive contact where—in the case of flat-ended cylindrical punch—the whole contact area remains in stick state until the displacement achieves some critical value, after which complete sliding starts