An electrodynamic analysis of the propagation of longitudinal and transverse waves in a periodic 3D grating of ferromagnetic nanoparticles is carried out on the basis of the solution of the characteristic equation, which includes the cells of the scattering matrix of an autonomous block with magnetic nanoinclusions and Floquet channels as a model of the grating cell. On the basis of the solution of a quasi-compatible system of equations obtained by substituting the calculated values of the wave numbers of longitudinal and transverse waves into the dispersion relations, the results of calculating the effective electromagnetic parameters of a 3D grating of ferromagnetic nanoparticles are obtained.
Lyotropic liquid crystalline templates are promising universal carriers in biomedicine. Their functionalization with luminescent lanthanide complexes enables the creation of hybrid systems for theranostic applications. In the present work, polyfunctional hybrid systems based on the lyotropic liquid crystal C12EO4/H2O/C10H21OH with varying contents of the europium complex Eu(TTA)3(H2O)2 have been obtained. The optimal content of the europium complex in the LLC composition as a phosphor has been determined to be 0.05 wt
The synthesis of a new sulfonamide by the Diels-Alder reaction is presented. The antibacterial activity of the obtained compound has been studied. New hybrid lyotropic liquid crystal transport systems based on the obtained sulfonamide and a nonionic surfactant-decaethylene glycol monododecyl ether, have been synthesized in an aqueous medium for potential use in biomedicine. The nature of the interactions that occur during the introduction of the sulfonamide obtained in this work into supramolecular organized lyotropic media has been studied. The effect of lanthanide derivative markers and a biological product on the optical and luminescent properties of the resulting systems has been evaluated, which will allow to control the delivery and release of new drugs.
A simulation of remote atmospheric gas analysis in the spectral range near the wavelength of 1572 nm has been performed. The characteristics of a narrow-band thermostable continuous laser diode with an output power of ≤15 mW have been experimentally studied, and the possibility of tuning the laser diode wavelength both within a separate isolated CO2 absorption line and from line to line in the CO2 absorption band has been shown. The possibility of using a laser diode for further work on the creation of a lidar sensor for studying the CO2 content in the atmosphere has been shown.
In this work, the relaxation process in mixtures of a nematic liquid crystal matrix with additives of azochromophores and CdSe/ZnS quantum dots is analyzed. The thermally initiated mesophase—isotropic liquid phase transition showed that the activation energy of this process increases almost equally upon the addition of AX-7 or AX-8 in an amount of 10 wt
