Drexel Algorithm Helps Bacteria-Powered Microrobots Navigate (IMAGE) Drexel University Caption Drexel University researchers have developed a way to use electric fields to control microrobots in a fluid and allow them to automatically sense obstacles and adjust their course en route to their destination. The technology could one day be used for drug delivery in the body or building microscopic technology. Credit Drexel University 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.