Le prince William, duc de Cambridge et Catherine Kate Middleton, duchesse de Cambridge, visitent l'université de Manchester le 14 octobre 2016. 14th October 2016 Manchester UK Britain's Prince William and Catherine, Duchess of Cambridge, visit The University of Manchester to view the National Graphene Institute. Graphene is the thinnest, strongest and most conductive material on the planet. Prince William tried out a sports car built from the material.14/10/2016 - Manchester - Photo