Browsing by Author "Shapoval, Oleg M."

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    A new approach to the testing of ice-forming aerosols in cloud environments [Articol]
    (Editura "Tehnica-UTM", 2015-05-20) Zasavitsky, E.; Kantser, Valeriu; Sidorenko, Anatolie; Belenchuk, Alexandr; Shapoval, Oleg M.; Chirita, Arcady
    The elaborated method allows tracking the dynamics of the process in climate chamber under impact of the ice-forming reagent. Simultaneous registration of cloud transmittance and recording of the ice forming process gives us an integral picture of AgI reagent effect on testing cloud. In this study we find a positive correlation between testing cloud transmission and ice particle formation. We showed that count of ice particles and determination of its density and size is possible directly in climate chamber as well as dynamics of particles deposition.
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    Oxygen-dependent formation of VO2 thin films by metalorganic aerosol deposition [Articol]
    (Universitatea Tehnică din Moldova, 2018-05-24) Belenchuk, Alexandr; Shapoval, Oleg M.; Zasavitsky, E.; Vatavu, Sergiu; Kiritsa, Arcady; Moshnyaga, V.
    We report on the growth and properties of vanadium dioxide (VO2) on amorphous and oriented substrates by the low-cost and industry-oriented method of metalorganic aerosol deposition (MAD). X-ray diffraction and temperature- dependent Raman spectroscopy confirm formation of single phase tin films. Abrupt change of resistance by 5×103 times and steep drop of infrared transmission from 49 to 10% at 1700 nm pave the way for application of MAD technique in fabrication of VO2-based optoelectronic and thermochromic devices, such as “smart windows”.