Fig. 3
From: Degenerate conic anchoring and colloidal elastic dipole-hexadecapole transformations
Elastic dipoles. a, b Director fields for dipole colloids (R = 750 nm) with θe = 0° (a) and 45° (b), colored by its projection onto the z-axis. The defects are shown in black (isosurface for S = 0.6). c, d Corresponding simulated polarized light micrographs of dipole colloids with θe = 0° (c) and 45° (d). e–g Optical microscopy textures of a dipole with homeotropic (e) and conic (f, g) anchoring, which are consistent with the predicted textures shown in (a, c) and (b, d), respectively; n0 shows a far-field director set by rubbing. Left and middle textures in e–g were taken between crossed polarizers A and P; textures in the middle are slightly overexposed to enhance visibility of boojums at the bottom pole. Textures in the right column were taken between parallel polarizers. Scale bar: 5 μm (e, f) and 6 μm (g)
