The study of defects in graphene and graphene pseudocrystals
Graphene is a layer of carbon atoms arranged in a hexagonal lattice. The outstanding properties of graphene make it an attractive material for various applications. Its physical and mechanical properties can be controlled by external impact: mechanical, electrical, magnetic, and / or by changing the local crystalline perfection of graphene. The incorporation of defects into the crystal structure of graphene changes its mechanical properties, while at the same time contributing to an increase in the electrical and thermal conductivities of graphene.
Theoretical studies can reduce the number of expensive experiments aimed at analyzing the effect of defects on the electronic and mechanical properties of graphene. Managing the characteristics of graphene and graphene-based materials by introducing disclination defects will expand the use of graphene in modern technology.
Figure. Different types of graphene pseudocrystals.
Kolesnikova A. L. et al. Structure and energy of intercrystallite boundaries in graphene //Rev. Adv. Mater. Sci. – 2017. – Т. 52. – С. 91-98.
Romanov A. E., Rozhkov M. A., Kolesnikova A. L. Disclinations in polycrystalline graphene and pseudo-graphenes. Review //Letters on Materials. – 2018. – Т. 8. – №. 4. – С. 384-400.
Rozhkov M. A. et al. Evolution of Dirac Cone in Disclinated Graphene //Reviews on Advanced Materials Science. – 2018. – Т. 57. – №. 2. – С. 137-142.