Scattering of light on surfactant-laden liquid-liquid crystal interface

The spectrum of surface quasi-elastic light scattering (SQELS) on a surfactant-laden interface between nematic liquid crystal and isotropic fluid is calculated for the case when the surfactant film induces homeotropic anchoring of the nematic director. The result can be used for determination of the surface tension, compressional modulus, and a combination of the surface viscosity coefficients from the experimental SQELS data.