title: Hydrogen-dimer lines and electron waveguides in graphene.
abstract: The electronic and transport properties of graphene ribbons sandwiched between hydrogen dimer lines, of the kind recently realized by Nilsson et al., Carbon, 2012, 50, 2052, are investigated with the help of first principles methods. It is found that such lines of hydrogen atoms block conduction between neighboring channels and effectively allow the confinement of graphene charge carriers, thereby opening the possibility of imprinting nano-circuits in graphene by controlled hydrogenation.
authors.affiliation: Dipartimento di Chimica, Università degli Studi di Milano, v. Golgi 19, 20133, Milano, Italy. rocco.martinazzo@unimi.it.
authors.forename: Simona
authors.initials: S
authors.lastname: Achilli
authors.forename: Gian Franco
authors.initials: GF
authors.lastname: Tantardini
authors.forename: Rocco
authors.initials: R
authors.lastname: Martinazzo