Two Russian-born scientists shared the Nobel Prize in physics on Tuesday for «groundbreaking experiments» with the thinnest, strongest material known to mankind _ a carbon vital for the creation of faster computers and transparent touch screens. Andre Geim and Konstantin Novoselov, professors at the University of Manchester in Britain, in 2004 isolated graphene, a form of carbon only one atom thick but more than 100 times stronger than steel, and showed it has exceptional properties, the Royal Swedish Academy of Sciences said. Geim, 51, is a Dutch national while Novoselov, 36, holds British and Russian citizenship. Both are natives of Russia and started their careers in physics there. They first worked together in the Netherlands before moving to Britain, the Associated Press reported.