Fig. 5.

The protrusion interaction potential is well-fit by the theory in some parameter ranges. The dotted lines show the repulsive interaction potential f_pr measured from simulations and the solid lines correspond to the best fit to the protrusion undulation potential given in the text with B and γ as fit parameters. Parameters are L = 100, δ = 1.5 and (A) p_s = 0.06, (B) p_s = 0.08 and the best fit values are (A) B = 0.8, γ⁻¹ = 213, (B) B = 0.9, γ⁻¹ = 156.