Platinum Nanoparticles (IMAGE) DOE/Lawrence Berkeley National Laboratory Caption From a collection of nanoscale platinum particles, left, researchers homed in on the chemistry occurring in different surface areas of individual nanoscale platinum particles like the one at right, which measures about 100 billionths of an inch across. Researchers found that chemical reactivity is concentrated toward the edges of the particles (red circle at right), with lesser activity in the central area (black circle). This image was produced by an atomic force microscope. Credit "High-spatial-resolution mapping of catalytic reactions on single particles," <i>Nature</i>, Jan. 11, 2017 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.