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Stretch-induced Tunability of Electrical Transport Properties of Three-dimensional Graphene-based Foam Structures by Guo, Shu-Ting; Zou, Fangxin is a scholarly article available to read on EtoBox.

What is Stretch-induced Tunability of Electrical Transport Properties of Three-dimensional Graphene-based Foam Structures about?

The fast electron transport and superior multidirectional flexibility of three-dimensional graphene-based foams (GFs) are pivotal in the realm of stretchable electronics. We observed pre-stretching induced modulation of the temperature-dependent electrical resistivity of GFs, where, as the pre-stretch strain level increased, the distinct temperature dependence of the resistivity of a GF sample would change and might even exhibit a notable transition from negative dependence to positive dependence. We attempted to interpret the phenomenon by proposing a new conduction network model that represents GF structures as interconnected graphene islands and island/island conduction junctions and incorporates three conduction mechanisms: thermally activated conduction, phonon-limited conduction, and fluctuation-induced tunneling conduction. By fitting-assisted analysis, we found that the temperature dependence of the resistivity of a GF sample primarily relies on the discrete quantities of graphene islands and island/island conduction junctions, and the resistivity originating from each conduction mechanism. As pre-stretch strain level increases, these factors would change due to conduction

Author

Guo, Shu-Ting; Zou, Fangxin

Published

2024

Language

EN