Controlled Positioning of Large Interfacial Nanocavities via Stress‐Engineered Void Localization

Abstract

The effect of stress on void nucleation during solid–solid reaction of ZnO/Al2O3 core–shell nanowires and multilayer structures through the nanoscale Kirkendall effect is investigated. A flexible stress-mediated approach is suggested to spatially define the localization of large Kirkendall voids in these systems. New nanostructures with positioned interfacial nanocavities are fabricated. This void engineering strategy can be further extended to other thermal diffusion couples. Detailed facts of importance to specialist readers are published as ”Supporting Information”. Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.