Mechanical properties of small objects are a function of their characteristic length scale, especially when one of the scales is reduced into the sub-micrometer regime (such us nanowires, thin films, nanoparticles and micropillars). At these scales, the measured strength can be sensitive to both changes in sample shape and size, leading to interesting phenomena such as augmented strength and scattered response. The current frontiers in the field aims at understanding the deformation and failure mechanisms on the different length scales, in order to exploit them to tailor materials properties to the loading condition. The multiscale nature of this problem brings new challenges, e.g., understanding the effects of interfaces, grain-boundaries and surfaces on dislocation motion, nucleation of defects at surfaces and interfaces, and the effects of temperature on stiffness and brittleness.
The focus of this symposium lies on the structure-dependent small-scale mechanical properties in micro- and nanoscale structures from the perspectives of theory, simulation, and experiment and how to bridge between them. This symposium invites abstracts that discuss sample size effects, nanoscale mechanical testing, in-situ characterization and modeling of small-scale materials. The properties to be covered include strength, plastic flow, fatigue and fracture. Abstracts that address both experimental and modeling aspects, with an emphasis on how to link between these different scales and techniques, are solicited.