Факультет електроніки та інформаційних технологій (ЕлІТ)
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Item The surface morphology, structural properties and chemical composition of Cd1-xZnxTe polycrystalline thick films deposited by close spaced vacuum sublimation(Elsevier, 2017) Знаменщиков, Ярослав Володимирович; Знаменщиков, Ярослав Владимирович; Znamenshchykov, Yaroslav Volodymyrovych; Косяк, Володимир Володимирович; Косяк, Владимир Владимирович; Kosiak, Volodymyr Volodymyrovych; Опанасюк, Анатолій Сергійович; Опанасюк, Анатолий Сергеевич; Opanasiuk, Anatolii Serhiiovych; Ponomarov, А.А.; Romanenko, A.V.; Stanislavov, A.S.; Medvids, A.; Шпетний, Ігор Олександрович; Шпетный, Игорь Александрович; Shpetnyi, Ihor Oleksandrovych; Gorobets, Yu.I.; Dauksta, E.Тонкі полікристалічні плівки Cd1-xZnxTe з х варіювалися від 0,37 до 0,80 були отримані метод вакуумної сублімація з близькою відстанню. Для дослідження властивостей структурних властивостей були проведені дослідження PIXE і Раман. Визначення хімічного складу плівок за допомогою EDS, PIXE і XRD показало гарне співвідношення результатів. Раман-спектроскопія виявляє зв'язок між концентрацією цинку і коливальними властивостями плівок. Дослідження просторового розподілу хімічних елементів на поверхні плівки за допомогою мікропіксела і мікрорамановской спектроскопії показали, що плівки однорідні і не містять вторинних фаз, таких як CdTe, ZnTe і ТеItem Magnetite-polymer Nanoparticles: Structure and Properties(Sumy State University, 2015) Stanislavov, A.S.; Sukhodub, L.B.; Kuznetsov, V.N.; Суходуб, Леонід Федорович; Суходуб, Леонид Федорович; Sukhodub, Leonid FedorovychThe paper describes synthesis of magnetite-alginate composites. The main feature of such biomaterials is the simultaneous formation of magnetite nanoparticles inside the alginate matrix. Obtained samples were characterized by X-ray diffraction and transmission electron microscopy. In several samples the secondary phase of ammonium chloride was observed. The average crystallite sizes of magnetite phase are about 13 nm. The addition of alginate leads to the decrease of microstrains in [h k 0] direction.Item The Study of the Influence of Static Magnetic Field on Brushite Crystallization in the Presence of Magnesium(Sumy State University, 2013) Kuznetsov, V.N.; Yanovska, A.A.; Stanislavov, A.S.; Danilchenko, S.N.; Суходуб, Леонід Федорович; Суходуб, Леонид Федорович; Sukhodub, Leonid FedorovychThe paper describes the influence of the imposition of static magnetic field on brushite crystallization. Two different configurations of the magnetic field were used. The flasks with the precipitates were placed near the different poles. It was shown that changing the magnetic field configuration and positioning the samples in proximity to north or south poles can greatly affect their crystallinity and texture with most of them having the preferred orientation along the b-axis according to the X-Ray diffraction data. The imposition of the magnetic field also influences the microstrain ratio decreasing it significantly. It was also verified [1] that the Mg substrate availability decreases the crystallinity of DCPD. The micrographs of the nanoparticles with the different magnifications were obtained by the transmission electron microscopy (TEM). The comparative analysis of the electron microscopy data correlates with the XRD data. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35462Item Structural Properties of the Nanocrystallized Magnetite of Different Syntheses(Sumy State University, 2013) Kuznetsov, V.N.; Stanislavov, A.S.; Danilchenko, S.N.; Kalinkevich, O.V.; Kalinkevich, A.N.; Sukhodub, Leonid Fedorovych; Суходуб, Леонід Федорович; Суходуб, Леонид ФедоровичTransmission electron microscopy (TEM) with electronic diffraction and X-ray diffraction (XRD) was used to study structural features of nanosized magnetite Fe3O4, which was synthesized using polymeric matrices (polysaccharide chitosan, at alias). From the received data it was revealed that growth inhibition and size stabilization of Fe3O4 nanoparticles were strongly affected by polysaccharide matrix. It was also observed that directional size decrease of Fe3O4 nanoparticles was accompanied by the increasing defectiveness of crystal lattice and decreasing unit cell size. The effectiveness of complementary use of both TEM with electronic diffraction and XRD techniques for structural and substructural parameters determination while studying magnetite nanosized particles synthesized in polysaccharide matrices is shown in this paper. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35450Item Biphasic Calcium Phosphate Composite for Biomedical Applications(Sumy State University, 2013) Sukhodub, L.B.; Kulak, A.I.; Іншина, Наталія Миколаївна; Иншина, Наталия Николаевна; Inshyna, Nataliia Mykolaivna; Kuznetsov, V.N.; Stanislavov, A.S.; Суходуб, Леонід Федорович; Суходуб, Леонид Федорович; Sukhodub, Leonid FedorovychThe paper describes the preparation of the biphasic (hydroxyapatite (HA) and tricalcium phosphate (TCP)) nanostructured calcium phosphate composite. The product was chemically synthesized from the solution which contained calcium acetate Са(СН3СОО)2 (0,167 mМ), sodium dihydrogen phosphate NaH2PO4 (0,1 mМ), sodium hydrocarbonate NaHCO3 (0,02 mM). The calcium phosphate composite was formed at pH=11 with and without the addition of carbonate ions. The samples were analyzed using X-Ray diffraction after the heat treatment at 900C for 1 h. The derived material contained HA and TCP phases with their contents change depending on the concentration of the carbonate ions in the solution. The mean crystallite size of the HA phase in (121) plane is 12 – 14 nm. Further studies will be directed to the using of the derived composite for the biomedical applications. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/35448