Fishnet Material Top View (image) Penn State Caption Top view shows a field emission scanning electron microscopy image of a portion of the fabricated metamaterial nanostructure. Scale bar: 3000 nm. The inset shows an enlarged unit cell. Scale bar: 200 nm. Credit Penn State Usage Restrictions Non-commercial use only 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.