Nanoscale Ampoule Fabrication by Capillary Autoclosing

The open ends of oxide nanotubes (NTs) can be sealed with silica at room temperature and pressure after incorporation of desired materials into the NTs, the payload volume of which is adjustable (see picture for the case of fluorophores). This process originates from a synergetic reaction of capillary-condensed water and silicon reactants, which rapidly produces silica at the ends of the NTs. 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.