The effects of critical zippering angle on growing microtubule phase behavior. (a) Phase diagram with the variations of critical zippering angle α₀ and k_g. The phase diagram is colored the same way as in Fig. 2. (b) The variations of time averaged order parameter S with the change of α₀ and k_g. The effective microtubule width used here is W = 25 nm, and k_ic = k_sc = 0 s^–1. The average is performed in the steady state with a sampling interval 1 s and total average period 10⁵–5× 10⁵ s.