Microactuator (image) DOE/Lawrence Berkeley National Laboratory Caption A single actuator curls and extends as the temperature is changed by 15 degrees Celsius, as shown in this micrograph. On right, a palm-like configuration of actuators all curl together, opening and closing like a tiny hand. The scale bar is 50 microns. Credit Lawrence Berkeley National Lab 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.