Gold Nanoparticles (IMAGE) Weizmann Institute of Science Caption This is a cluster of gold nanoparticles under a transmission electron microscope. Empty spaces between the nanoparticles can serve as nanoflasks, as suggested by the drawing Credit Weizmann Institute of Science 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.