Search academic texts

Information × Registration Number 0218U005562, 0116U003761 , R & D reports Title Scientific principles and patterns of electrochemical procceses of formation of ordered nanoscale and microlevel chemotronic materials popup.stage_title Head Linyucheva Olga Volodymyrivna, Registration Date 22-12-2018 Organization National Technscal University of Ukraine "Kiev Polytechnic Institute". popup.description2 The created scientific bases of electrochemical formation of ordered nanostructured hemotoronic materials are based on the delimitation of the influence of the charge transport mechanism of the electrochemical process on the stratification of the structure of the surface phases of the electrode, which for semiconductor phases is governed by the ratio of gradients of the electric field and charge carriers in the liquid and solid phases. Nano-level structuring requires control of the field gradients in the semiconductor phase and is associated with the charge transfer at the electrode-electrolyte boundary. Microwave structuring requires control of concentration gradients in a solution and regulates mass transfer in 3D electrodes. The direction of growth of the solid phase corresponds to the preferred vector of the electric field, the tangential distortions of which are offset by the values ??of the field gradients, achievable in the pulsed mode. The high-frequency pulse-reverse mode gives control over the transport of charges in a semiconductor at a frequency of 10 kHz due to the removal of the transfer effect at the boundary of the semiconductor-solution and in the solution. At a frequency of 100 kHz, a critical delay is achieved for the transformation of the stoichiometric gradient TiО2 from the gradient of the electric field, which contributes to the crushing and compaction of the TiO2 phase. Therefore, the formation of metal phases of a given size is possible only at the micro level, and semiconductor structures with a characteristic size of 10 nm can not be formed by methods of electrochemistry of aqueous solutions. The new scientific methods are based on the new methods of protection against corrosion of valve metals in the elements of hemotronics and cathodic protection systems, a method for improving the technical characteristics of 3D-electrodes of gas sensors. For the first time it was shown the possibility of creating electrochemical diodes with one or both titanium electrodes. Product Description popup.authors Ізотов Володимир Юрійович Бик Михайло Володимирович Букет Олександр Миколайович Ващенко Олександр Миколайович Гавриков Дмитро Сергійович Гулян Роман Іванович Косогін Олексій Володимирович Кушмирук Андрій Іванович Лінючев Олександр Генадійович Лінючева Ольга Володимирівна Ущаповський Дмитро Юрійович popup.nrat_date 2020-04-02 Close