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(a,b) Young’s modulus and adhesion force mapping of CB (4.9%, 10 phr)/IR obtained by PeakForce QNM AFM. The scan size was 3.0 μm; (c) typical force−deformation curve. The Young’s modulus results from a fit of the retracing curve with a JKR contact model, as indicated by the solid black line. (d) Histograms of adhesion force mapping for CB (4.9%, 10 phr)/IR. (e) Volume fraction of CB from PeakForce QNM AFM and the real formulation.
