Dominant role of tunneling resistance in the electrical conductivity of carbon nanotube-based composites

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Development of epoxy mixtures for application in aeronautics and aerospace (2014, background): “Theoretical and experimental studies available in the literature [39,44-48] put in evidence the correlations between material characteristics (polymeric matrices, CNT type) and production process parameters, (synthesis method, treatment, etc.”
Polymer and ceramic nanocomposites for aerospace applications (2017, background): “The dominant charge transport mechanism in such films is tunneling, which causes heating (Li et al. 2007).”
Flexible Tactile Sensing Based on Piezoresistive Composites: A Review (2014, background): “Rm is in turn dictated by the quantum mechanical tunnelling through the insulating polymer layer [95] and therefore is a function of the interparticle separation.”
Electrical conductivity of CNT/polymer composites: 3D printing, measurements and modeling (2020, background): “Separations in the order of a few nanometers allow for electrons to tunnel from one CNT to the other [37,38].”