Andre Geim, the 67-year-old Nobel Prize-winning physicist known in China as the “father of graphene”, will join the University of Hong Kong as a chair professor in April, according to the university. Geim, who led a team at the University of Manchester to isolate graphene – the world’s thinnest and strongest material, consisting of a single layer of carbon atoms – using adhesive tape in 2004, is set to leave Britain after spending more than two decades of his career there. Geim said he was...