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Schematic of (a) the experimental setup of AFM indentation of the agarose substrate with a spherical cantilever tip radius of 2.5 μm. (b) Modeling setup mimicking the indentation experiment. The reference point (RF) to control the indentation is set at the center of the sphere. (c) Schematic of the finite-deformation viscoelastic agarose constitutive model. (Online version in colour)
