Hydrogen‐Induced Reversible Insulator–Metal Transition in a Palladium Nanosphere Sensor

A reversible insulator-metal transition occurs in a self organized three-dimensional palladium nanosphere without the use of an external hydrostatic pressure, involving the absorption of molecular hydrogen at ambient pressure, which is a new paradigm in hydrogen sensing. 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.