Researchers (IMAGE) University of the Witwatersrand Caption Professor Somnath Bhattacharyya and members of the Wits Nano-Scale Transport Physics Lab. They are Professor Yorick Hardy, Dr Christopher Coleman, Kayleigh Mathieson and Professor Somnath Bhattacharyya. Credit Wits 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.