Search academic texts

Information × Registration Number 0214U006244, 0110U006231 , R & D reports Title The complex diagnostics and study of new functional materials on the base of anisometric nanoparticles in soft anisotropic media by the singular optics methods for the systems of information recording, processing and displaying. popup.stage_title Head Soskin M.S., Registration Date 25-02-2014 Organization Institute of physics NASU popup.description2 The degree of coherence differs for the areas of the transition layer and the unperturbed LC matrix and changes with the application of an external field. We introduce the qualitative interpretation of the degree of coherence depending on the ratio of the CCD exposure time to the characteristic time of dynamic processes in the LC matrix. Upon application of an external electric field the disturbances of liquid crystal, which exist around the clusters are distributed in the area of the unperturbed nematic. A characteristic feature of the perturbed field of the liquid crystal is the presence of the inversion walls. The liquid crystal matrix with perturbation amplitude can be regarded as an amplitude mask. The Fredericks transition under the external voltage in the composite with the cholesteric (quasi- nematic) liquid crystal has significant differences compared to pure 5CB nematic. The perturbed layer of liquid crystal exists around clusters of nanotubes, an external field leads to the development of this layer and its distribution in the area of pure matrix. Reorientation of liquid crystals occurs through two competing mechanisms: reorentation of cholesteric in homeotropic state via an intermediate state fingers-structure and network structure arising in the areas of clean matrix. Keywords : multiwall carbon nanotubes , nematic and cholesteric liquid crystals , self-organization , percolation, aggregation, singular optics , optical singularities , light scattering , the degree of temporal coherence . Product Description popup.authors Васильєв Василь Ігоревич Поневчинський Владіслав Вікторович Соскін Марат Самуїлович popup.nrat_date 2020-04-02 Close