Industrial Automatic Control Systems and Controllers Annotation << Back Optical and Calorimetric Studies of Nematic Doped With Metal Nanoparticles Egamov M.Kh., Sidikov V.T., Yumagulov N.I. The paper presents the results of a study of dispersed polymers of liquid crystal (DPLC) cells containing nanosized droplets of nematic liquid crystal (NLC) with added metal nanoparticles (NPs) for further use in display devices. The study used polarization-optical microscopy (POM) and differential scanning calorimetry (DSC) methods. In the course of the study, it was revealed that a low concentration of NPs in DPPC leads to a significant change in the optical properties of the studied materials, such as the light transmission coefficient, threshold voltage, contrast and absorption coefficients. It was experimentally established that, with a constant intensity of UV radiation, it is possible to select an optimal fi ller concentration that ensures uniformity in droplet size, higher light transmission, and increased contrast coefficient. Based on the results of light transmission measurements of DPL cells, the absorption and extinction coefficients were calculated using the Beer equation. It was found that the liquid crystal droplets in DPL cells are predominantly in a bipolar configuration. A higher concentration of metal nanoparticles leads to a lower cleaning temperature and reduced light transmission due to a lower order parameter caused by thermal fluctuations. Numerical calculations showed that the maximum contrast ratio for DPL cells with nanoparticle content is 2.55 times higher than the minimum contrast ratio of the films in their initial state. Possible mechanisms for implementing the obtained results have been proposed for creating flexible liquid crystal display elements used in environmentally friendly technologies. Keywords: polymer, liquid crystal, metal nanoparticles, light transmission coefficient, contrast, phase separation, thermography. DOI: 10.25791/asu.10.2025.1619 Pp. 41-47.