Articole din publicaţii internaţionale: Recent submissions

  • 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 ...
  • A single ZnO tetrapod-based sensor 
    LUPAN, Oleg; CHOW, Lee; CHAI, Guangyu (ELSEVIER, 2009)
    Transferable ZnO tetrapods were grown by an aqueous solution method. An individual ZnO tetrapod-based sensor was fabricated by in situ lift-out technique and its ultraviolet (UV) and gas sensing properties were investigated. ...
  • 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 ...
  • Well-aligned arrays of vertically oriented ZnO nanowires electrodeposited on ITO-coated glass and their integration in dye sensitized solar cells 
    LUPAN, O.; GUÉRIN, V. M.; TIGINYANU, I. M.; URSAKI, V. V.; CHOW, L.; HEINRICH, H.; PAUPORTÉ, T. (ELSEVIER, 2010)
    We report on the effects of post-growth hydrothermal treatment and thermal annealing on properties of vertically aligned ZnO nanowires arrays (NWs). The samples were electrochemically deposited (ECD) on indium–tin oxide ...
  • Direct Growth of Freestanding ZnO Tetrapod Networks for Multifunctional Applications in Photocatalysis, UV Photodetection, and Gas Sensing 
    MISHRA, Yogendra Kumar; MODI, Gaurav; CRETU, Vasilii; POSTICA, Vasile; LUPAN, Oleg; REIMER, Tim; PAULOWICZ, Ingo; HRKAC, Viktor; BENECKE, Wolfgang; KIENLE, Lorenz; ADELUNG, Rainer (American Chemical Society, 2015)
    Here, we demonstrate the versatile and single-step synthesis of ZnO-T with different arm morphologies by a simple flame transport synthesis (FTS) approach, forming a network. Morphological evolutions and structural intactness ...
  • Low-Voltage UV-Electroluminescence from ZnO-Nanowire Array/p-GaN Light-Emitting Diodes 
    LUPAN, Oleg; PAUPORTÉ, Thierry; VIANA, Bruno (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2010)
    UV LEDs : The fabrication of an ITO/ZnO-nanowires/p-GaN/In-Ga LED structure is reported with an active emitting layer made of high-quality epitaxial ZnO grown electrochemically from a solution at low temperature (85 °C). ...
  • Novel hydrogen gas sensor based on single ZnO nanorod 
    LUPAN, Oleg; CHAI, Guangyu; CHOW, Lee (ELSEVIER, 2008)
    For extensive use in an industrialized process of individual ZnO nano/microrods as building nanoblock in novel hydrogen sensors, a simple, inexpensive, and bio-safe synthesis process and nanofabrication route is required. ...
  • Rapid Fabrication Technique for Interpenetrated ZnO Nanotetrapod Networks for Fast UV Sensors 
    GEDAMU, Dawit; PAULOWICZ, Ingo; KAPS, Sören; LUPAN, Oleg; WILLE, Sebastian; HAIDARSCHIN, Galina; MISHRA, Yogendra Kumar; ADELUNG, Rainer (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2014)
    Two flame-based synthesis methods are presented for fabricating ZnO-nanostructure-based UV photodetectors: burner flame transport synthesis (B-FTS) and crucible flame transport synthesis (C-FTS). B-FTS allows rapid growth ...
  • Effect of synthesis conditions on the growth of ZnO nanorods via hydrothermal method 
    POLSONGKRAM, D.; CHAMNINOK, P.; PUKIRD, S.; CHOW, L.; LUPAN, O.; CHAI, G.; KHALLAF, H.; PARK, S.; SCHULTE, A. (ELSEVIER, 2008)
    ZnO nanorods with hexagonal structures were synthesized by a hydrothermal method under different conditions. The effect of synthesis conditions on ZnO nanorod growth was systematically studied by scanning electron microscopy. ...
  • Effects of annealing on properties of ZnO thin films prepared by electrochemical deposition in chloride medium 
    LUPAN, O.; PAUPORTÉ, T.; CHOW, L.; VIANA, B.; PELLÉ, F.; ONO, L. K.; CUENYA, B. Roldan; HEINRICH, H. (ELSEVIER, 2010)
    The development of cost-effective and low-temperature synthesis techniques for the growth of high-quality zinc oxide thin films is paramount for fabrication of ZnO-based optoelectronic devices, especially ultraviolet ...
  • Selective hydrogen gas nanosensor using individual ZnO nanowire with fast response at room temperature 
    LUPAN, O.; URSAKI, V. V.; CHAI, G.; CHOW, L.; EMELCHENKO, G. A.; TIGINYANU, I. M.; GRUZINTSEV, A. N.; REDKIN, A. N. (ELSEVIER, 2010)
    In this work, we report on a single ZnO nanowire-based nanoscale sensor fabricated using focused ion beam (FIB/SEM) instrument. We studied the diameter dependence of the gas response and selectivity of ZnO nanowires (NWs) ...
  • Sensing characteristics of tin-doped ZnO thin films as NO2 gas sensor 
    SHISHIYANU, Sergiu T.; SHISHIYANU, Teodor S.; LUPAN, Oleg I. (ELSEVIER, 2005)
    NO2 gas sensor was fabricated by successive ionic layer adsorption and reaction (SILAR) technique and rapid photothermal processing (RPP) of the Sn-doped ZnO film. The experimental results shows that tin doping of zinc ...
  • Self-assembly ZnO nanostructures for nanoscale devices applications 
    LUPAN, Oleg; SONTEA, Victor; CHOW, Lee; CHERNYAK, Leonid; RAILEAN, Serghei (University of Craiova, 2008)
    We demonstrate a synthetic approach to selfassembly ZnO nanostructures on flat, spherical and curved surfaces. Self-assembly of ZnO nanorods was performed in aqueous solution. The effects of electric field, biopolymer ...
  • Expert System for Medical Diagnosis. Fuzzy Logic 
    TROCIN, Caterina; BRAGARENCO, Andrei; SONTEA, Victor (Institute of Mathematics and Computer Science of the Academy of Sciences of Moldova, 2011)
    Fuzzy systems are considered a special case of expert systems that provides a flexible method for handling uncertainty and imprecise knowledge presentation. This article presents the design steps of an expert system based ...
  • Issues of classification, terminology and criteria for diagnosis of arrhythmia 
    SCRIPNIC, V.; ZEMTSOVSKY, E.; SAULEA, A.; SONTEA, V.; MINCIUNĂ, V.; DEAC, A.; VASILIEV, N. (IEEE, 2012)
    In this article are discussed questions of some rare (small) arrhythmias classification and their physiological value from the point of view of synergetic and reliability of the health in extreme conditions.
  • Copper and Magnesium - doped Zinc Oxide Nanorods for Device Applications 
    LUPAN, O.; SONTEA, V.; RAILEAN, S.; POCAZNOI, I.; CHOW, L. (Видавництво Львівської політехніки, 2012)
    In this paper we present an experimental approach to study copper and magnesium-doped zinc oxide nanorods and their integration in wavelength-tunable light-emitting diodes (LEDs).
  • Zinc Oxide Nanostructures – Current Status 
    LUPAN, O.; SONTEA, V.; CRETU, V.; RAILEAN, S.; TROFIM, V. (Kyiv Polytechnic Institute, 2012)
    Development of ZnO nanostructures is of great importance for industrial applications. We analyze synthesis and properties control of zinc oxide, which are important in understanding the growth mechanism and further developing ...
  • Microcontroller based data acquisition system for environmental monitoring 
    IAVORSCHI, Anatolie; SONTEA, Victor (IEEE, 2012)
    This paper presents a data acquisition system based on ARM microcontroller for remote data acquisition and processing of environmental parameters, description of structural scheme of the device and peripheral modules, ...
  • Copper doped zinc oxide micro- and nanostructures for room-temperature sensorial applications 
    LUPAN, Oleg; CRETU, Vasilii; SONTEA, Victor; RAILEAN, Serghei; GHIMPU, Lidia; TIGINYANU, Ion; RUDZEVICH, Yauheni; LIN, Yuqing; CHOW, Lee (IEEE, 2013)
    Detection of hydrogen gas is important for safety reasons. To obtain improved hydrogen sensing performances for miniaturized sensors, copper doping in zinc oxide micro- and nanostructures were investigated. Samples were ...
  • Spectral control of light action on biological particles inside soft biological tissue 
    BARUN, Vladimir; DICK, Serghei; SONTEA, Victor; SERYAKOV, Alexandr; YASHIN, Konstantin (IEEE, 2013)
    Gradient forces formed by speckle structures in laser-irradiated biological tissue are studied. Speckle fields and some their parameters, such as speckle sizes, are theoretically evaluated. Multi-layered human skin is taken ...

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