Перегляд за Автор "Sergeeva, A. E."
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- ДокументApplication of corona discharge for poling of polymer elecrtets(2017) Sorokina, A. G.; Fedosov, S. N.; Sergeeva, A. E.The constant current method facilitates analysis of experimental results and gives additional information on injection and drift of carriers, the hysteresis phenomena and polarization buildup.
- ДокументApplication of dielectric spectroscopy and TSDC methods for studying relaxation in non-linear optical and ferroelectric polymers(2021) Sergeeva, A. E.; Fedosov, S. N.
- ДокументBuild-up and switching of ferroelectric polarization in polyvinylindene fluoride(2020) Fedosov, S. N.; Sergeeva, A. E.
- ДокументCorona discharge poling of ferroelectric polymers(2021) Sergeeva, A. E.; Fedosov, S. N.
- ДокументDielectric measurements in nonlinear ferroelectric polymers(2022) Fedosov, S. N.; Sergeeva, A. E.
- ДокументDielectric relaxation in polystyrene thin films doped with DR1 guest molecules(2019) Fedosov, S. N.; Giacometti, J. A.; Sergeeva, A. E.
- ДокументExperimental determination of the effective conductivity of polyvinylidene fluoride (PVDF) films(2022) Sergeeva, A. E.; Fedosov, S. N.
- ДокументFEP/ePTFE/FEP ferroelectret sandwiches(2020) Fedosov, S. N.; Sergeeva, A. E.; von Seggern, H.
- ДокументHow electric conductivity affects polarization in ferroelectric polymers(2020) Fedosov, S. N.; Sergeeva, A. E.; von Seggern, H.
- ДокументImportance of the charge dynamics screening during polarization switching in PVDF films(2020) Sergeeva, A. E.; Fedosov, S. N.; von Seggern, H.
- ДокументMathematical modeling of charge carriers' dispersive transport in ferroelectric polymers(2020) Fedosov, S. N.; Sergeeva, A. E.; Khramchenkov, D. V.The transient voltage response of poly(vinylidenefluoride) (PVDF), a typical ferroelectric polymer, to the application of a constant charging current is studied theoretically assuming validity of the multiple trapping model of injected carriers at the localized states and considering non-linear field dependence of the irreversible polarization. Approximate analytical solutions are obtained and their reliability is tested by numerical computation. The value of the free-carrier mobility is determined by comparing the experimentally observed u(t) kinetics with the corresponding curve reconstructed from the phenomenological model.
- ДокументModeling of a mask for improving thickness uniformity of thin films and vacuum coatings(2020) Fedosov, S. N.; Sergeeva, A. E.A new approach has been used to improve thickness uniformity of thin films and coatings deposited on plane moving substrates of large area such as polymer films, paper or steel strips. It consists of mathematical modeling a special mask designed for controllable partial screening of the vapor stream. A precise procedure is proposed to optimize a profile of the mask so as to obtain the best thickness uniformity of either the thin film or the vacuum coating at any evaporator - substrate geometry. Experimental results confirm the high efficiency of the proposed modeling that can be used not only at newly designed plants, but also at already working systems. The method is applicable not only for physical vapor deposition processes, but also for sputtering and ion plating.
- ДокументPoling of ferroelectric polymers in corona discharge(2020) Sergeeva, A. E.; Fedosov, S. N.
- ДокументPolymer films and coatings deposited by using electron and ion treatment(2019) Zadorozhny, V. G.; Fedosov, S. N.; Sergeeva, A. E.The book contains information about modern achievements in the field of deposition of thin polymer films in a vacuum. The features of the effect of temperature, ultraviolet irradiation, electron flux, glow discharge on the process of thin polymer films formation are considered. Much attention is paid to the processes of evaporation and condensation of polymers in vacuum, as well as processes of structure formation, protective, dielectric and optical properties of the obtained films and coatings. The prospects for the use of thin polymer films in microelectronics, optics and precision engineering are discussed. The book can be useful to scientific and engineering staff, graduate students, students specializing in the physics and chemistry of polymers, thin-film technology and materials science
- ДокументPyroelectricity and Residual Polarization in PVDF Thin Films with Nano-Scale Structure(2019) Sergeeva, A. E.; Fedosov, S. N.
- ДокументRelaxation processes in ferroelectric and non-linear optical polymers studied by dielectric spectroscopy аnd TSDC methods(2020) Sergeeva, A. E.; Fedosov, S. N.
- ДокументRelaxation processes in thin films of PVDF-BaTiO3 composites(2019) Sergeeva, A. E.; Fedosov, S. N.
- ДокументRelaxation Processes in Thin Films of PVDF-BaTiO3 Composites(2019) Sergeeva, A. E.; Fedosov, S. N.
- ДокументSwitching of ferroelectric polarization and its build-up in polyvinylindene fluoride (PVDF) films(2021) Fedosov, S. N.; Sergeeva, A. E.
- ДокументSwitching of polarization in PVDF films: importance of screening by trapped charges(2021) Fedosov, S. N.; Sergeeva, A. E.; von Seggern, H.