First author Selma Piranej (IMAGE) Emory University Caption Emory University graduate student Selma Piranej, first author of the study, shown in the lab with a cell phone microscope set up to observe the rolling DNA-based motors. Credit Salaita Lab, Emory University Usage Restrictions Must include credit. License Original 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.