Single Al Nanoparticle Core Shell Structure Scale Bar (image) U.S. Army Research Laboratory Share Print E-Mail Caption This is a single nanoparticle extracted out from a view of native aluminum particles at 150,000 magnification. The image highlights the amorphous oxide shell surrounding the crystalline core. Credit ARL Photo Usage Restrictions None Share Print E-Mail 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.