Figure 2.

Overview of the different director structures as obtained from experiments and simulations. The right most column shows a sketch of the nematic director (dashed gray lines) where the defects points are marked in color according to their topological charge (red for the $+\frac{1}{2}$ singularities and blue for the $-\frac{1}{2}$). For all experimental images the scale bar is 5 μm. Simulation parameters: L_y/L_x = 1.5 everywhere, except for B where L_y/L_x = 1 and H where L_y/L_x = 5; Ly = 300d for B, B_∥, D_**, D_h, and S_**, Ly = 270d for D_* and M₄, Ly = 150d for S, Ly = 240d for M₆, Ly = 400d for H.