High transparency of nematic liquid crystal for σ-waves (experimental)
Baranova N. B. , Gusev I. V. , Zel'dovich B. Ya. , Krivoschekov V. A.
Thick cells (1-5 mm thick) with a nematic liquid crystal appear opaque because of inhomogeneities in the orientation in the volume. It has been found that an о wave can carry an image through such a crystal quite well if the orientation is uniform and rigidly fixed at the boundaries.