Перегляд за автором "Yukhymchuk, V.O."

Сортувати за: Порядок: Результатів:

  • Bio-SiC ceramics coated with hydroxyapatite using gas-detonation deposition: An alternative to titanium-based medical implants 
    Klyui, M.I.; Temchenko, V.P.; Gryshkov, O.P.; Dubok, V.A.; Kladko, V.P.; Kuchuk, A.V.; Dzhagan, V.M.; Yukhymchuk, V.O.; Kiselov, V.S. (Functional Materials, 2013)
    Silicon-carbide (SiC) ceramics synthesized using forced infiltration and coated with bioactive hydroxyapatite (HA), represents a great potential for replacement of traditional titanium medical implants. In this paper the ...
  • Drift correction of the analyzed area during the study of the lateral elemental composition distribution in single semiconductor nanostructures by scanning Auger microscopy 
    Ponomaryov, S.S.; Yukhymchuk, V.O.; Valakh, M.Ya. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2016)
    The main difficulty in obtaining the lateral elemental composition distribution maps of the semiconductor nanostructures by Scanning Auger Microscopy is the thermal drift of the analyzed area, arising from its local ...
  • Effect of Si infiltration method on the properties of biomorphous SiC 
    Kiselov, V.S.; Kalabukhova, E.N.; Sitnikov, A.A.; Lytvyn, P.M.; Poludin, V.I.; Yukhymchuk, V.O.; Belyaev, A.E. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2009)
    Two types of wood-based biomorphous SiC composites with different microstructure were obtained by infiltration of carbon template with liquid or vapour silicon. The oak, pine, lilac, walnut, acacia woods available in ...
  • Efficient core-SiO₂/shell-Au nanostructures for surface enhanced Raman scattering 
    Yukhymchuk, V.O.; Hreshchuk, O.M.; Valakh, M.Ya.; Skoryk, M.A.; Efanov, V.S.; Matveevskaya, N.A. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2014)
    The efficient SERS (surface enhanced Raman scattering) substrates that are films of nanoparticles (NP) of the “core–shell” type, where the core of SiO2, and the shell of gold nanoparticles, were developed in this work. ...
  • Investigation of electron-phonon interaction in bulk and nanostructured semiconductors 
    Yaremko, A.M.; Yukhymchuk, V.O.; Dzhagan, V.M.; Valakh, M.Ya.; Azhniuk, Yu.M.; Baran, J.; Ratajczak, H.; Drozd, M. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2007)
    In this paper, the problem of electron-phonon interaction (EPI) innsemiconductor crystals and quantum dots (QDs) is considered. It is shown that the model of strong EPI developed for organic molecular crystals can be ...
  • Investigation of the optical and acoustical phonon modes in Si₁₋xGex QD SLs 
    Dzhagan, V.N.; Krasil'nik, Z.F.; Lytvyn, P.M.; Novikov, A.V.; Valakh, M.Ya.; Yukhymchuk, V.O. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2003)
    Single- and multilayer structures with Si₁₋xGex nanoislands have been investigated using the Raman scattering technique. The values of the mechanical strain and composition were determined in the islands of the both ...
  • Obtaining and optical properties of the glasses of the GeS₂–HgS system 
    Nechyporuk, B.D.; Olekseyuk, I.D.; Yukhymchuk, V.O.; Filonenko, V.V.; Mazurets, I.I.; Parasyuk, O.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2007)
    The glassy alloys of the GeS₂–HgS system in the range of 0–50 mol. % HgS were obtained by the melt quenching technique. Their Raman spectra were investigated. The dependence of the particularities of the light scattering ...
  • Optical and acoustical phonon modes in superlattices with SiGe QDs 
    Yukhymchuk, V.O.; Dzhagan, V.M.; Klad’ko, V.P.; Lytvyn, O.S.; Machulin, V.F.; Valakh, M.Ya.; Yaremko, A.M.; Milekhin, A.G.; Krasil’nik, Z.F.; Novikov, A.V.; Mestres, N.; Pascual, J. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2004)
    Multilayers with SiGe nanoislands grown in a broad temperature range (300-600 °C) are studied using Raman spectroscopy, HRXRD and AFM. It is shown that the islands are fully strained when obtained at 300 °C and gradually ...
  • Optical and morphological properties of tetragonal Cu₂ZnSnS₄ thin films grown from sulphide precursors at lower temperatures 
    Babichuk, I.S.; Yukhymchuk, V.O.; Semenenko, M.O.; Klyui, N.I.; Caballero, R.; Hreshchuk, O.M.; Lemishko, L.S.; Babichuk, L.V.; Ganus, V.O.; Leon, M. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2014)
    Optical constants of Cu₂ZnSnS₄ thin films formed using thermal annealing of pre-deposited layers of copper, zinc and tin sulphides on glass substrates at different temperatures and ambient atmosphere were determined. It ...
  • Optical investigations of thermostimulated changes in an ensemble of CdSxSe₁₋x quantum dots embedded into borosilicate glass matrix 
    Kunets, V.P.; Yukhymchuk, V.O.; Valakh, M.Ya. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2001)
    We have employed the absorption and Raman spectroscopies to study thermostimulated changes in an ensemble of CdSXSe₁₋X quantum dots embedded into a borosilicate glass matrix. It is shown that additional annealing of the ...
  • Paramagnetic defects related to photoluminescence in SiOx films 
    Rudko, G.Yu.; Vorona, I.P.; Indutnyy, I.Z.; Ishchenko, S.S.; Shepeliavyi, P.E.; Yukhymchuk, V.O. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2004)
    The correlation between the photoluminescence and paramagnetic defects is studied in SiOx films grown by vacuum thermal deposition and annealed at 750 ⁰C. The as-grown samples exhibit a wide structureless EPR line centered ...
  • SERS of Rhodamine 6G on substrates with laterally ordered and random gold nanoislands 
    Yukhymchuk, V.O.; Kostyukevych, S.A.; Dzhagan, V.M.; Milekhin, A.G.; Rodyakina, E.E.; Yanchuk, I.B.; Shepeliavy, P.Ye.; Valakh, M.Ya.; Kostyukevych, K.V.; Lysiuk, V.O.; Tverdokhlib, I.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2012)
    Preparation and study of laterally ordered and disordered arrays of Au nanoislands as SERS substrates are reported. Developed technology allows obtaining SERS substrates with long-term stability (up to six months), efficient ...
  • Simple method for SiC nanowires fabrication 
    Kiselov, V.S.; Lytvyn, O.S.; Yukhymchuk, V.O.; Belyaev, A.E. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2011)
    In this work, we introduce a simple and convenient approach for growing SiC nanowires (SiCNWs) directly on carbon source from graphite. The commercial SiO powder and the cheap common graphite were used as the source ...
  • Spectroscopical study of natural nanostructured carbonaceous material shungite 
    Konchits, A.A.; Shanina, B.D.; Valakh, M.Ya.; Yanchuk, I.B.; Yukhymchuk, V.O.; Yefanov, A.V.; Krasnovyd, S.V.; Skoryk, M.A. (Functional Materials, 2014)
    The correlation between morphology, local structure and magnetic properties of the different origin shungite material with nanocarbon content 25-40 wt. % was studied by SEM, EPR, and Raman scattering methods. It was ...
  • Strain relaxation in thin Si₁-ₓ-yGeₓCy layers on Si substrates 
    Valakh, M.Ya.; Gamov, D.V.; Dzhagan, V.M.; Lytvyn, O.S.; Melnik, V.P.; Romanjuk, B.M.; Popov, V.G.; Yukhymchuk, V.O. (Functional Materials, 2006)
    The possibility to obtain a heterosystem consisting of the upper partially strained and lower relaxed layers by gradient in situ doping of SiGe layers with carbon is considered. The properties of the as-grown and annealed ...
  • Synthesis, morphological and structural properties of bio-SiC ceramics 
    Yukhymchuk, V.O.; Kiselev, V.S.; Belyaev, A.E.; Chursanova, M.V.; Danailov, M.; Valakh, M.Ya. (Functional Materials, 2010)
  • Theoretical and experimental study of Raman scattering in mixed (MoS₂)x(MoSe₂)₁₋x layered crystals 
    Yaremko, A.M.; Yukhymchuk, V.O.; Romanyuk, Yu.A.; Virko, S.V. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2015)
    Raman scattering in mixed MoS₂/MoSe₂ layer type crystals was investigated in this work. The change of intensities and positions of bands for in-plane E¹₂g and outof-plane A₁g vibrations as functions of the “concentration” ...
  • Thin films of Cu₂ZnSnS₄ for solar cells: optical and structural properties 
    Babichuk, I.S.; Yukhymchuk, V.O.; Dzhagan, V.M.; Valakh, M.Ya.; Leon, M.; Yanchuk, I.B.; Gule, E.G.; Greshchuk, O.M. (Functional Materials, 2013)
    The structure of Cu₂ZnSnS₄ films was investigated by Raman spectroscopy, scanning electron microscopy, energy dispersive X-ray spectrometry, optical reflectance and photoluminescence. The films were formed by thermal ...
  • Tin doping effect on crystallization of amorphous silicon obtained by vapor deposition in vacuum 
    Neimash, V.B.; Poroshin, V.M.; Shepeliavyi, P.Ye.; Yukhymchuk, V.O.; Melnyk, V.V.; Makara, M.A.; Kuzmich, A.G. (Semiconductor Physics Quantum Electronics & Optoelectronics, 2013)
    The influence of tin impurity on amorphous silicon crystallization was investigated using the methods of Raman scattering, Auger spectroscopy at ion etching, scanning electron microscopy and X-ray fluorescence microanalysis ...