A natural alternative to plastic films. (IMAGE) North Carolina State University Caption The biocomposite films look similar to many synthetic plastics, however, their structure is hierarchically reinforced as seen in the fluorescence microscopy image. Credit Photo courtesy of Orlin Velev, NC State University Usage Restrictions None License Original 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.