Onion artificial muscle (IMAGE) American Institute of Physics Caption The concept of artificial muscle made from onion epidermal cell. Credit Shih Lab, National Taiwan University Usage Restrictions This image may be used only with appropriate caption and credit. 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.