What Soviet-born Dutch-British physicist wrote a paper that described devices that contained just one, two, or three atomic layers?
Bilayer graphene Bilayer graphene is a material consisting of two layers of graphene. One of the first reports of bilayer graphene was in the seminal 2004 "Science" paper by Geim and colleagues, in which they described devices "which contained just one, two, or three atomic layers"
Julius Wilhelm Gintl Julius Wilhelm Gintl was an Austrian physicist. He was notable as the developer of an early form of duplex electrical telegraph, which allowed two messages to be transmitted on a single wire, in opposite directions. This "duplex" communication was an early specific case of the general practice of multiplexing.