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Information × Registration Number 0224U033593, (0122U000850) , R & D reports Title Artificial porous materials as a basis for creating the novel biosensors popup.stage_title Закономірності проходження рідин і газів через нанопори. Head Kiv Arik Yu., Доктор фізико-математичних наук Registration Date 31-12-2024 Organization The State Institution “South Ukrainian National Pedagogical University named after K. D. Ushynsky” popup.description1 The aim of the project is to create a multifunctional computer model of the track structure, which can be obtained as a result of irradiation with fast ions of thin dielectric and semiconductor films. Today, these structures have become the basis of a new generation of biosensor devices. The computer model will be used to solve a number of problems in nanotechnologies. The tasks include the study of the optimal shape of the track, the study of the atomic and electronic structure of the inner surface of the track, the study of the defective structure of the material in the area adjacent to the track. The developed model will also allow to study the patterns of ion fluxes passing through the tracks. popup.description2 Theoretical and practical results, novelty. At the final stage of the work, the main attention was paid to the study of the influence of the structural features of the inner walls of the track on the kinetics of the passage of ionic flows through the track. Using the developed computer model of the track, it was established that the kinetics of the flow of ionic liquids through the track is very sensitive to minor changes in structural defects on the inner surface of the track. When studying the adsorption centers, it was shown that it is necessary to take into account not only the depth of the potential well, on which the "delay time" of the migrating particle depends, but also the probability of the particle being captured by the adsorption center. In addition, the spatial distribution of adsorption centers on the track walls is also important. During ion bombardment, various other structural defects, such as scattering centers, also appear on the inner surfaces of the tracks. As a result, the characteristics of the biosensor can be masked by the influence of defects that are not taken into account. Studies have shown that two main factors determine the kinetics of the carrier flow in a biosensor: the nature of the interaction of the carrier flow with the inner surfaces of the track and the interaction of foreign impurities with the main substance of the flow. The results of a computer experiment have shown that when foreign impurities significantly differ from the ions of the "carrier" flow in the magnitude of the charge, peculiar negative peaks appear in the kinetics of the flow through the track, the frequency of which depends on the concentration of foreign impurities in the flow. In the case of other differences in the characteristics of impurity particles and particles of the main flow, characteristic effects arise that can be detected depending on the specific purpose of the track sensor. Product Description popup.authors BIeLITChENKO Dmytro M. Vinkovska Alina O. Donchev Ivan I. Dmytro O. Diachok Chilikov Vladyslav A. popup.nrat_date 2024-12-31 Close