Researchers (IMAGE) Princeton University, Engineering School Caption Researchers Sujit Datta, assistant professor of chemical and biological engineering, Alejandro Martinez-Calvo, a postdoctoral researcher, and Anna Hancock, a graduate student in chemical and biological engineering Credit David Kelly Crow for Princeton University Usage Restrictions noncommercial use 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.