Propulsion of Bubble-Based Acoustic Microswimmers

A new microfabrication technique creates bubble-based acoustic swimmers at the 10-\textmu{}m scale---the size of a red blood cell. The authors use experiments and a three-dimensional analytical model to analyze the efficient propulsion mechanism of these artificial microswimmers. Such active matter could be used to transport a payload within the bloodstream, or to mix fluids in a lab-on-chip device.