Fig. 7From: Evaluation of energy dissipation involving adhesion hysteresis in spherical contact between a glass lens and a PDMS blockGradient of total energy dissipation f as a function of contact radius a. An approximately constant value of the gradient f is obtained in the unloading process (receding contact): f = 0.71 mJ/m (−Z max = 10 μm), f = 0.83 mJ/m (−Z max = 20 μm), f = 1.03 mJ/m (−Z max = 30 μm)Back to article page