Light scattering centers

E. Correlation Between Light-Scattering Centers and Bright Fluorescent Spots... 

In conclusion, exact evidence was not found that light-scattering centers are pits from the three classes of observations, although the possibility is not entirely eliminated that the light-scattering centers are bumps. 

The formation of light scattering centers is observed in membranes containing only PVC and DOA, and with the additives valinomycin, KTPB, C0CI2, Et30 or... 

Fig. 6.25 The electro-thermo-optic effect of smectic-cholesteric mixture COB CN = 90 10. The light transmission is greatly decreased by the electric field application [91]. The light scattering centers are created in the smectic phase by the irradiation on to a part of the LC cell, and they are erased by the electric field application and become clear. This characteristic can be applied to a dynamic display. M mesophase, I isotropic phase...

Fig. 6.28 The simultaneous display of static and dynamic figures by the thermo-optic and the electro-thermo-optic effects [94], The liquid crystal used is COB CN = 90 10. The static figures are displayed by the light scattering centers, and, holding them, the dynamic figures are displayed with the electric field application. Two photographs show dynamic display, as the right photograph was taken at 1/4 s after the left photograph...

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