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. 2023 Sep 18;15(38):45485–45497. doi: 10.1021/acsami.3c10018

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© 2023 The Authors. Published by American Chemical Society

Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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Comparison of thin-film rheology and tribology of imidazolium ILs: friction coefficient, relaxation time, and master curves for G′ and G″. Color legend for all plots: red for 0% RH and blue for 18 and 35% RH. (a) Friction coefficient. The solid bars give the friction coefficient μ₀, whereas the dashed bars give the friction coefficient for the transition to μ_+Δ. (b) Characteristic relaxation time scale, τ₀ = 1/ω₀, at the cross point between G′ and G″ for the selected ILs at D₀ (solid bar) and D_+Δ (dashed bars). (c) Master curve for G′ and G″.