RT Journal Article ID 65fbfc9570d20cbe A1 Marian, Jaime A1 Knap, Jaroslaw T1 Breakdown of Self-Similar Hardening Behavior in Au Nanopillar Microplasticity JF International Journal for Multiscale Computational Engineering JO JMC YR 2007 FD 2007-10-22 VO 5 IS 3-4 SP 287 OP 294 AB This article is concerned with the study of scale effects in Au nanopillars under compression. We propose that plastic yielding in these nanostructures is characterized by a critical length scale at which a transition from volumetric to surface-dominated plasticity takes place. This transition effectively sets a lower bound on the self-similar behavior commonly assumed in nanostrength models. Using quasi-continuum simulations, we study the subcritical regime and find that plasticity at these scales is governed by dislocation emission at surface irregularities. PB Begell House LK https://www.dl.begellhouse.com/journals/61fd1b191cf7e96f,3cf3b25417fa966d,65fbfc9570d20cbe.html