Fig 5. Schematics of a two-cell system and in-silico assesment of force inferences.

On the left, the system depicts the cross-sectional slice of two cells (with pressures P₁ and P₂), with constant mean curvatures, H₁ = 1/R₁ and H₂ = 1/R₂, on the major membrane faces 1 and 2 (with tensions T₁ and T₂) separated by the interfacial membrane face 3 (with tension T₃) with constant mean curvature H₃. Note, all three membranes are patches of spherical membranes as they have constant mean curvatures. d denotes the radius of the circular junction between the 3 membrane faces. θ’s correspond to the angles between the 3 membranes along the circular junction. On the right, we measure the total error between the true tension and the inferred tension: ${\Sigma }_{i=1}^3|T_i-T_{i,true}|$.