IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Articole din publicaţii internaţionale by Subject "Raman spectroscopy"

Browsing Articole din publicaţii internaţionale by Subject "Raman spectroscopy"

Sort by: Order: Results:

  • Comparative study of hydrothermal treatment and thermal annealing effects on the properties of electrodeposited micro-columnar ZnO thin films 
    LUPAN, O.; PAUPORTÉ, T.; TIGINYANU, I. M.; URSAKI, V. V.; SONTEA, V.; ONO, L. K.; ROLDAN CUENYA, B.; CHOW, L. (ELSEVIER, 2011)
    We report a comparison of the role played by different sample treatments, namely, a low-temperature hydrothermal treatment by hot H2O vapor in an autoclave versus thermal annealing in air on the properties of ZnO films ...
  • Effect of samarium addition and annealing on the properties of electrodeposited ceria thin films 
    ŻIVKOVIC, L.; LAIR, V.; LUPAN, O.; RINGUEDE, A. (ELSEVIER, 2011)
    Samarium (Sm)-doped ceria (CeO2) (SDC) is a promising material for high temperature electrochemical devices. Our work demonstrates that thin SDC films can be prepared by a cost-effective electrodeposition method at a ...
  • Electrochemical synthesis and characterization of nanorods, nanocolumnar ceria – based thin films on different glass substrates 
    ČEROVIC, L.; LAIR, V.; LUPAN, O.; CASSIR, M.; RINGUEDE, A. (ELSEVIER, 2010)
    Nanorods, nanocolumnar-based ceria thin films were electrodeposited onto (FTO) or (ITO) glass substrates, at room temperature. Cubic fluorite type ceria nanostructured films of high crystal quality were synthesized on both ...
  • Fröhlich modes in gan columnar nanostructures 
    TIGINYANU, I. M.; SARUA, A.; IRMER, G.; MONECKE, J.; HUBBARD, S. M.; PAVLIDIS, D.; VALIAEV, V. (American Physical Society, 2001)
    GaN columnar nanostructures fabricated by electrochemical dissolution of bulk material have been studied by micro-Raman spectroscopy. The anodization induces an increase in the intensity of Raman scattering accompanied by ...
  • Investigation of tin oxide nanobelts/nanoribbons prepared by chemical deposition technology 
    LUPAN, O.; CHOW, L.; CHAI, G.; SCHULTE, A.; PARK, S.; HEINRICH, H.; SONTEA, V.; TROFIM, V.; RAILEAN, S. (Institute of Electrical and Electronics Engineerings, IEEE, 2008)
    A facile aqueous solution process to fabricate tin oxide nanoarchitectures was successfully developed. The influence of precursors on the morphology of SnO2 is studied. Tin oxide nanobelts/nanoribbons were characterized ...
  • Phase Transitions Induced by Hydrostatic Pressure in II-III2-VI4 Compounds 
    URSAKI, Veacheslav V.; BURLAKOV, Igor I.; TIGINYANU, Ivan M.; RAPTIS, Yannis S.; ANASTASSAKIS, Evangelos; ANEDDA, Alberto; CORPINO, Riccardo (IOP Publishing, 2000)
    II-III2-VI4 compounds with different crystal structures have been studied by Raman spectroscopy (RS) under hydrostatic pressure up to 30 GPa. The phase transition characteristics induced by hydrostatic pressure i.e. the ...
  • Pressure Induced Phase Transitions in Spinel and Wurtzite Phases of ZnAl2S4Compound 
    URSAKI, Veacheslav V.; BURLAKOV, Igor I.; TIGINYANU, Ivan M.; RAPTIS, Yannis S.; ANASTASSAKIS, Evangelos; AKSENOV, Igor; SATO, Katsuaki (IOP Publishing, 1998)
    ZnAl2S4 single crystals with spinel (α-phase) and wurtzite (w-phase) structures have been studied by Raman spectroscopy under hydrostatic pressures of up to 300 kbar. Significant changes in the phonon spectrum of the α-phase ...
  • Raman Modes in Porous GaP under Hydrostatic Pressure 
    TIGINYANU, I. M.; URSAKI, V. V.; RAPTIS, Y. S.; STERGIOU, V.; ANASTASSAKIS, E.; HARTNAGEL, H. L.; VOGT, A.; PRÉVOT, B.; SCHWAB, C. (John Wiley & Sons, Inc., 1999)
    Bulk and free-standing porous membranes of GaP have been characterised by Raman spectroscopy under hydrostatic pressure, with emphasis to the Fröhlich surface vibration mode. Under compression, an increase in the frequency ...
  • Raman scattering by porous structures with InAs quantum dots 
    MILEKHIN, Alexander; URSAKI, Veacheslav; SIRBU, Lilian; TOROPOV, Alexander; TIGINYANU, Ion; ZAHN, Dietrich R. T. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2009)
    In this paper we search for the possibilities of introducing porosity in InAs/AlAs/GaAs multilayer quantum dot structures as an additional tool for the modification of their phonon spectrum. Raman spectroscopy is used as ...
  • Raman scattering investigation of MnxFe1−xIn2S4 solid solutions 
    GUC, M.; URSAKI, V. V.; BODNAR, I. V.; LOZHKIN, D. V.; ARUSHANOV, E.; IZQUIERDO-ROCA, V.; PÉREZ RODRÍGUEZ, A. (ELSEVIER, 2012)
    Spinel-type MnxFe1−xIn2S4 solid solutions grown by the planar melt crystallization method (the horizontal version of the Bridgman method) are investigated by means of energy dispersive X-ray analysis and Raman scattering ...
  • Raman-active modes of porous gallium phosphide at high pressures and low temperatures 
    URSAKI, V. V.; MANJÓN, F. J.; SYASSEN, K.; TIGINYANU, I. M.; IRMER, G.; MONECKE, J. (IOP Publishing, 2002)
    Porous gallium phosphide (GaP) with a honeycomb-like morphology and a skeleton relative volume concentration c = 0.7 was investigated by Raman spectroscopy under pressure up to 10 GPa at T = 5 K. The porous samples were ...
  • Structural and Vibrational Study of Pseudocubic CdIn2Se4 under Compression 
    SANTAMARÍA-PÉREZ, David; GOMIS, Oscar; PEREIRA, André L. J.; VILAPLANA, Rosario; POPESCU, Catalin; SANS, Juan Angel; MANJÓN, Francisco Javier; RODRÍGUEZ-HERNÁNDEZ, Placida; MUÑOZ, Alfonso; URSAKI, Vladislav V.; TIGINYANU, Ion M. (American Chemical Society, 2014)
    We report a comprehensive experimental and theoretical study of the structural and vibrational properties of α-CdIn2Se4 under compression. Angle-dispersive synchrotron X-ray diffraction and Raman spectroscopy evidence that ...
  • Synthesis and Characterization of Ag- or Sb-Doped ZnO Nanorods by a Facile Hydrothermal Route 
    LUPAN, Oleg; CHOW, Lee; ONO, Luis K.; CUENYA, Beatriz Roldan; CHAI, Guangyu; KHALLAF, Hani; PARK, Sanghoon; SCHULTE, Alfons (American Chemical Society, 2010)
    ZnO nanorods doped with Ag and Sb have been synthesized by a facile hydrothermal technique. Crystal quality, morphology, chemical/electronic composition, local structure, and vibrational mode properties are investigated ...
  • Synthesis and characterization of ZnO nanowires for nanosensor applications 
    LUPAN, O.; EMELCHENKO, G. A.; URSAKI, V. V.; CHAI, G.; REDKIN, A. N.; GRUZINTSEV, A. N.; TIGINYANU, I. M.; CHOW, L.; ONO, L. K.; ROLDAN CUENYA, B.; HEINRICH, H.; YAKIMOV, E. E. (ELSEVIER, 2010)
    In this paper we report the synthesis of ZnO nanowires via chemical vapor deposition (CVD) at 650°C. It will be shown that these nanowires are suitable for sensing applications. ZnO nanowires were grown with diameters ...

Search DSpace


Browse

My Account