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Investigation of the electronic conductivity of a wire-frame nanomaterial based on a branched network of carbon nanotubes

Keywords:

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
G.V. Savostyanov – Post-graduate Student, Assistant, Department of Radiotechnique and Electrodynamics,
Saratov State University named after N.G. Chernyshevsky
E-mail: savostyanov.gv@gmail.com


The paper «Investigation of the electronic conductivity of a wire-frame nanomaterial based on a branched network of carbon nanotubes» by O.E. Glukhova and G.V. Savostyanov is devoted to the study of the electronic conductivity of a wire-frame nanomaterial based on a branched network of carbon nanotubes. This carbon material is obtained in practice by thermal treatment and laser irradiation. The main objective of this study is to identify factors that determine the electrical conductivity of the framework from a branched network of carbon nanotubes. The processes of formation of seamless and defective T shaped CNT compounds were considered by means of the molecular dynamics method using REBO potential. The defect of the double vacancy (2V) was chosen as a structural defect. The contact resistance of T shaped compounds was calculated by the non-equilibrium Green function method. To determine the electrically conductive properties of the framework from a branched CNT network we constructed its coarse-grained model. The equivalent resistance of a branched network of CNTs was calculated and the value of the conductivity of the material was found. The regularities of the change in the conductivity of the framework from the concentration of nanotubes and the degree of their ordering are established.

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