O.E. Glukhova – Dr.Sc.(Phys.-Math.), Professor, Head of Department of Radiotechnique and Electrodynamics, Saratov State University named after N.G. Chernyshevsky

E-mail: GlukhovaOE@info.sgu.ru

V.V. Mitrofanov – Post-graduate Student, Department of Radiotechnique and Electrodynamics, 

Saratov State University named after N.G. Chernyshevsky

E-mail: ip.boyar@gmail.com

M.M. Slepchenkov – Ph.D.(Phys.-Math.), Associate Professor, Department of Radiotechnique and Electrodynamics, Saratov State University named after N.G. Chernyshevsky

E-mail: slepchenkovm@mail.ru

We have developed a universal method for constructing unit cells of composite nanostructures, called the «magnifying glass» method. Topological models of thermodynamically stable structures of a new carbon material, a hybrid graphene-nanotube film, are revealed using this method. This film is formed by two graphene monolayers with zigzag tubes which are located between graphene sheets and are covalently bonded to them. The mechanism of energetically favorable covalent bonding of tubes and graphene sheet is established for the first time. It is shown that thermodynamically stable topological models are composites with tubes (10,0), (12,0), (14,0), (16,0) and (18,0) at the intertubular distance of 9, 10, 11, 12 and 13 hexagons (formation enthalpy <−0.2 kcal/mol∙atom).

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