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Evidence of Universal Temperature Scaling in Self-Heated Percolating Networks

TitleEvidence of Universal Temperature Scaling in Self-Heated Percolating Networks
Publication TypeJournal Article
Year of Publication2016
AuthorsDas, SR, Mohammed, AMS, Maize, K, Sadeque, S, Shakouri, A, Janes, DB, Alam, MA
JournalNano Letters
Date Published05
Type of ArticleArticle
ISBN Number1530-6984
Accession NumberWOS:000375889700035
Keywordscarbon nanotube networks, chemistry, copercolation network, electrical-conductivity, electrodes, graphene films, high-performance, hybrid graphene, Materials Science, percolation theory, physics, scaling law, self-heating, Technology - Other Topics, thermoreflectance imaging, transparent, Universality, Weibull distribution

s of 2D networks (percolating and copercolating). Remarkably, we find that the self-heating can be described by a simple two-parameter Weibull distribution, even under voltages high enough to reconfigure the percolation pathways. Given the generality of the phenomenological argument supporting the distribution, other percolating networks are likely to show similar stress distribution in response to sufficiently large stimuli. Furthermore, the spatial evolution of the self heating of network was investigated by analyzing the spatial distribution and spatial correlation, respectively. An estimation of degree of hotspot clustering reveals a mechanism analogous to crystallization physics. The results should encourage nonlinear generalization of percolation models necessary for predictive engineering of nanocomposite materials.

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Short TitleNano Lett.
Alternate JournalNano Lett.