Coated Nanoporous Alumina Membrane (IMAGE) North Carolina State University Caption This scanning electron micrograph was obtained from a zinc oxide-coated nanoporous alumina membrane. Credit Dr. Roger Narayan, North Carolina State University 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.