Acoustically Actuated Flow in Microrobots Powered by Axisymmetric Resonant Bubbles

Acoustic Microrobots In article number 2300465, Sarthak Misra and co‐workers report a new design of a bubble‐powered microrobot that exploits the property of collective bubble oscillation‐induced flow observed in large bubble systems and bubble‐based metamaterials. A microrobot with 3D axisymmetric distribution of 18 gas bubbles is demonstrated. The strategy behind this design offers the advantage of developing larger microrobots (up to millimeter scale) that are easy to handle while retaining the merits of fast oscillatory microscale actuation in the form of microbubbles.