Predicting of tunneling resistivity between adjacent nanosheets in graphene–polymer systems

Abstract

In this work, the tunneling resistivity between neighboring nanosheets in grapheme–polymer nanocomposites is expressed by a simple equation as a function of the characteristics of graphene and tunnels. This expression is obtained by connecting two advanced models for the conductivity of graphene-filled materials reflecting tunneling role and interphase area. The predictions of the applied models are linked to the tested data of several samples. The impressions of all factors on the tunneling resistivity are evaluated and interpreted using the suggested equation. The calculations of tunneling resistivity for the studied examples by the model and suggested equation demonstrate the same levels, which confirm the presented methodology. The results indicate that the tunneling resistivity decreases by super-conductive graphene, small tunneling width, numerous contacts among nanosheets and short tunneling length.

Graphene Nanocomposites for Electromagnetic Interference Shielding—Trends and Advancements

“…Due to superior electron conduction properties, carbon nanoparticles such as graphene [142,143] and carbon nanotube [144,145] have been applied as nanofillers in EMI shielding materials. These nanofillers can easily form interconnecting networks in the polymer matrices [146][147][148]. In addition, carbon nanofillers have fine dispersions in the matrices due to interface formation, thereby enabling high electrical conductivity and radiation shielding properties [149].…”