Bridging the Size Gap (image) University of South Carolina Caption Two different etching methods produced two different kinds of nanoparticles: nanorice (top) and nanodumbbells. In both, the original flat surface of the nanocuboid was replaced by a curved surface with more exposed, catalytically active atoms. Credit Image: American Chemical Society Usage Restrictions Credit the American Chemical Society 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.