Comparative study analyzes strain sensitivity of graphene nanoplatelet sensors in two matrix systems, suggesting optimal conditions for strain detection.
• Comparative study of GNP-based piezoresistive strain sensors fabricated with two different matrices (epoxy and Elium®) across a wide filler content range (1–35 wt%). • Analysis of electrical conductivity and percolation behavior. • Strain-dependent piezoresistive tests performed to evaluate sensor sensitivity near and above the percolation threshold. • Highest strain sensitivity near the percolation threshold, with the 2 wt% GNP/Elium® sensor showing a gauge factor of 40 for strain up to 0.6% and 54 up to 1% strain.
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Zarafshani et al. (2026) studied this question.
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