Attempt of direct measuring of near surface shear viscosity

We offer a technique that permits the surface viscosity coefficients of LC's to be measured. The author has realized a version of the technique, distinctive feature of which is a usage of membranes having pores of submicron sizes (in the range from 40 tun down to 0.034,mu m). We have found out that, at minimum diameter of pores (similar to 0.034 mu m), the values of viscosity for the azoxy-compound based LC is larger by factor 10-15 compared to that measured with usual (similar to 100 mu k and more) capillary tubes; the same values for LC 5CB have fond to be larger by factor of 100-350.