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Information × Registration Number 0125U001997, ( 0226U002856  ) R & D request Title Physical processes of controlled synthesis of bioactive nanoparticles in reactive plasma Head Lisovskyi Valerii O., Доктор фізико-математичних наук Registration Date 02-04-2025 Organization V.N. Karazin Kharkiv National University popup.description1 The project aims to develop physical principles for controlling the synthesis of nanoparticles with bioactive properties and methods for their retention in gas-discharge plasma. The main objectives of this research are as follows: - to develop and manufacture a gas-discharge chamber with vertically oriented electrodes, which can be powered by DC, RF or pulsed voltage; - to create a diagnostic complex consisting of a laser system for visualizing nanoparticles, a Langmuir probe, and an optical spectrometer; - to investigate spatial profiles of plasma parameters by probe and emission-spectral methods in various carbon-containing gases (C2H2, CH4, C6H6, CF4, and others) in DC, RF, and pulsed discharges in the pressure range from 1 to 100 Pa; - to study the spatial localization of the formation and retention of nanoparticles in these discharges using laser imaging; - to determine the influence of the voltage form from the power source (direct current, high-frequency, pulsed) on the parameters of the discharge plasma and, accordingly, on the formation and retention of nanoparticles; - to develop new methods for controlling the size of nanoparticles by changing the frequency and form of the voltage, pressure and type of gas; - to develop a new method for using nanoparticles as a means of diagnosing the structure of the potential distribution and electric fields; - to study the characteristics of nanoparticles obtained under different conditions using materials diagnostic methods (transmission and scanning electron microscopy, XRD, etc.); - to develop numerical models of the axial and radial structure of DC, pulsed and RF gas discharges under conditions of effective formation of nanoparticles; - to develop a method for the synthesis of combined polymer-metal nanoparticles containing metal atoms (in particular, silver) in the polymer matrix; - to study the antibacterial properties of combined polymer-metal nanoparticles. popup.nrat_date 2025-04-02 Close