Rohan Abeyaratne, the Quentin Berg Professor of Mechanics, is stepping down as the head of the Mechanical Engineering Department on July 1. Brian Hemond—The Tech May. 9, 2016 Facebook Twitter Reddit Print Rohan Abeyaratne, the Quentin Berg Professor of Mechanics, is stepping down as the head of the Mechanical Engineering Department on July 1. Brian Hemond—The Tech