3.8-micron Diameter Carbon Nanotube Yarn (IMAGE) University of Texas at Dallas Caption This is a scanning electron micrograph image of a 3.8-micron diameter carbon nanotube yarn that functions as a torsional muscle when filled with an ionically conducting liquid and electrochemically charged. The angle indicates the deviation between nanotube orientation and yarn direction for this helical yarn. Credit Image courtesy of the University of Texas at Dallas Usage Restrictions None 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.