|Figure 10: Schematic illustration of nematic director configurations in
spherical cavities: (a) the bipolar configuration, (b) the bipolar
configuration aligned by an electric field, (c) the radial configuration, (d) the
axial configuration in an applied field, and (e) the toroidal configuration.
The corresponding (f) bipolar, (g) radial,
and (h) axial configurations in elongated