Acoustic Hyperlens (1 of 2) (image) DOE/Lawrence Berkeley National Laboratory Caption The acoustic hyperlens is fashioned from 36 brass fins arranged in the shape of a hand-held fan. Each fin is approximately 20 centimeters long and three millimeters thick. Credit Courtesy of Xiang Zhang research group Usage Restrictions None 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.