Nanoparticles -- Small but Unique (IMAGE) Chalmers University of Technology Caption A single gold plasmonic nanoantenna probes the hydrogen absorption in an adjacent palladium nanocube. Credit Ella Marushchenko and Alex Tokarev Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.