Rough Microparticles (IMAGE) North Carolina State University Caption The top panel is a series of scanning electron micrographs for particles ranging from smooth to rough. The bottom panel is a series of atomic force micrographs showing the 3-D topography of these particles, again ranging from smooth to rough, to demonstrate the extensive characterization of their surfaces. Credit Lilian Hsiao Usage Restrictions Image credit must be given. 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.