Tethers make microbots smarter (IMAGE) Princeton University, Engineering School Caption From left, researchers Pierre-Thomas Brun, Yuchen Xi, and Tom Marzin in Brun's lab. Credit Sameer A. Khan/Fotobuddy Usage Restrictions For non-commercial work 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.