Walker (IMAGE) Arizona State University Caption Through a process known as strand displacement, a tiny walking device composed of DNA moves across a surface in a cartwheeling motion. The new device performed this feat more rapidly than any DNA walker designed to date. Credit <em>Nature Nanotechnology</em>/Nils Walter 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.