Electro-optical properties of modulators based on nematic LC composites with quantum dots

For to-date modulators in different laser applications electro-optical performances of liquid crystals (LC) should be enhanced. Effect of CdSe:Mn quantum dots (QD) on the dielectric, electro-optical, and rheological parameters of the ZhK- 1289 LC mixture has been studied. The influence of the CdSe:Mn concentration on phase transitions, fluorescence intensity and, as a consequence, the changes in the electro-optical properties of the composite, has been investigated. According to the results obtained in this work, the best values of the physical parameters of LC composites based on QDs for applied purposes are achieved in the concentration range of 0.2-0.4 wt%.