Mark Welland, English physicist and academic
Sir Mark Edward Welland, (born 18 October 1955) is professor of nanotechnology at the University of Cambridge and head of the Nanoscience Centre. He has been a fellow of St John's College, Cambridge, since 1986 and started his career in nanotechnology at IBM Research, where he was part of the team that developed one of the first scanning tunnelling microscopes. He was elected as the master of St Catharine's College, Cambridge and took up office on 1 October 2016.