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The aim is to explore the autocatalytic growth kinetics of graphene on dielectric substrates and its implications for electrical properties.

March 2, 2026Results in EngineeringOpen Access

Graphene Autocatalytic Growth with Percolation Control on a Dielectric Substrate

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Demonstrates the control of percolation thresholds in graphene growth on dielectric substrates, indicating potential for electronics.

The aim is to explore the autocatalytic growth kinetics of graphene on dielectric substrates and its implications for electrical properties.
Synthesize single-layer graphene on copper via the Boudouard reaction.
Characterize graphene islands using atomic force microscopy.
Analyze growth kinetics and percolation using micro- and THz analyses.
Combine experimental data with simulations to identify percolation thresholds.
Identified a 2D percolation threshold at approximately 65% surface coverage.
Growth kinetics exhibited sigmoidal behavior, confirming autocatalytic processes.
Demonstrated transition from localized hopping to Drude-type conductivity beyond the percolation threshold.

Salehpoor et al. (2026) studied this question.

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