Browsing by Subject "nanorods"

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  • The impact of morphology upon the radiation hardness of ZnO layers 
    BURLACU, A.; URSAKI, V. V.; SKURATOV, V. A.; LINCOT, D.; PAUPORTE, T.; ELBELGHITI, H.; RUSU, E. V.; TIGINYANU, I. M. (IOP Publishing, 2008)
    It is shown that ZnO nanorods and nanodots grown by MOCVD exhibit enhanced radiation hardness against high energy heavy ion irradiation as compared to bulk layers. The decrease of the luminescence intensity induced by 130 ...
  • Lasing with guided modes in ZnO nanorods and nanowires 
    ZALAMAI, V. V.; URSAKI, V. V.; KLINGSHIRN, C.; KALT, H.; EMELCHENKO, G. A.; REDKIN, A. N. (Springer Nature Switzerland, 2009)
    A vertically arranged nearly parallel array of ZnO nanorods and randomly oriented nanowires has been grown by low pressure chemical vapor deposition (CVD) on silica substrates and on stainless steel gauze woven from a wire ...
  • Low temperature preparation of Ag-doped ZnO nanowire arrays for sensor and light-emitting diode applications 
    LUPAN, O.; VIANA, B.; CRETU, V.; POSTICA, V.; ADELUNG, R.; PAUPORTÉ, T. (SPIE, Society of Photo-Optical Instrumentation Engineers, 2016)
    Transition metal doped-oxide semiconductor nanostructures are important to achieve enhanced and new properties for advanced applications. We describe the low temperature preparation of ZnO:Ag nanowire/nanorod (NW/NR) arrays ...
  • Morphological and Sensing Properties of the ZnO-Zn2SnO4 Ternary Phase Nanorod Arrays 
    LITRA, Dinu; LUPAN, Cristian; TJARDTS, Tim; QIU, Haoyi; ZADOROJNEAC, Tudor; MALAI, Dominic; SEREACOV, Alexandr; AKTAS, Cenk; SIEBERT, Leonard; LUPAN, Oleg (Springer Nature Switzerland, 2023)
    In this paper, the morphological and sensing properties of the Sn-doped ZnO-Zn2SnO4 nanorods obtained by the hydrothermal method are presented. The developed methodology exhibits high levels of efficiency and cost-effectiveness, ...
  • Nanofabrication and characterization of ZnO nanorod arrays and branched microrods by aqueous solution route and rapid thermal processing 
    LUPAN, Oleg; CHOW, Lee; CHAI, Guangyu; ROLDAN, Beatriz; NAITABDI, Ahmed; SCHULTE, Alfons; HEINRICH, Helge (ELSEVIER, 2007)
    This paper presents an inexpensive and fast fabrication method for one-dimensional (1D) ZnO nanorod arrays and branched two-dimensional (2D), three-dimensional (3D) – nanoarchitectures. Our synthesis technique includes the ...
  • Nanosensors: Current Status and Perspectives 
    LUPAN, O. I.; CHOW, L.; ADELUNG, R. (Tehnica UTM, 2019)
    Nanosensors play a great role in the world of nanotechnology and are demanded nowadays due to miniaturization of electronic devices in many countries for development of faster portable diagnostics techniques or sensing ...
  • 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. ...
  • Photoluminescence and Raman Study of Well-Aligned ZnO Nanorods on p-Si Substrate 
    URSAKI, V. V.; LUPAN, O.; TIGINYANU, I. M.; CHAI, G.; CHOW, L. (American Scientific Publishers, 2011)
    We report on optical properties of ZnO nanorods grown on p-type Si substrates by an electric-field assisted assembly technique in aqueous solutions applied at relative low temperature (96°C). The results of micro-Raman ...
  • Production and comparative study of ZnO films obtained by magnetron sputtering, MOCVD and electrochemical deposition 
    RUSU, E.; BURLACU, A.; ZALAMAI, V.; URSAKI, V.; PRILEPOV, V. (Technical University of Moldova, 2012)
    It was found that the morphology, electrical and luminescence properties of ZnO layers obtained by Magnetron sputtering, MOCVD and Electrochemical deposition can be controlled by technological parameters such as the ratio ...
  • Raman scattering in Me-doped ZnO nanorods (Me = Mn, Co, Cu and Ni) prepared by thermal diffusion 
    PHAN, The Long; VINCENT, Roger; CHERNS, David; NGHIA, Nguyen Xuan; URSAKI, V. V. (IOP Publishing, 2008)
    We have investigated normal and resonant Raman scattering in Me-doped ZnO nanorods (Me = Mn, Co, Cu and Ni) prepared by thermal diffusion. Experimental results show that the normal Raman spectra consist of the conventional ...
  • Selective gas sensor based on one-dimensional structure of ZnO nanorod 
    LUPAN, O.; CHOW, L.; CHAI, G. (Editura U.T.M., 2008)
    The present work reports on characterization of transferable one-dimensional (1-D) ZnO nanorods. Also, gas sensing investigations show that obtained single ZnO nanorod –based sensor posses a good selectivity and sensitivity ...
  • Self-assembly of densely packed and aligned bilayer ZnO nanorod arrays 
    CHOW, L.; LUPAN, O.; HEINRICH, H.; CHAI, G. (American Institute of Physics, 2009)
    We present a method of self-assembly of densely packed and aligned bilayer ZnO nanorod arrays in a hydrothermal synthesis process. The alkali hydrothermal environment first induced the growth of hydrotalcitelike zincowoodwardite ...
  • 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 ...
  • 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 ...
  • Synthesis and Characterizations of ZnO Nanorods Arrays and Mesoporous Films for Device Applications 
    LUPAN, O.; CHOW, L. (NSTI, 2007)
    We present a novel aqueous-solution synthesis technique to obtain uniform ZnO nanorod arrays with good crystalline and mesoporous films. This technique was preferred for reasons related to economical and ecological advantages, ...
  • Synthesis of one-dimensional SnO2 nanorods via a hydrothermal technique 
    LUPAN, O.; CHOW, L.; CHAI, G.; HEINRICH, H.; PARK, S.; SCHULTE, A. (ELSEVIER, 2009)
    We have developed a simple solution process to synthesize tin oxide nanorods. The influence of precursors and the reaction temperature on the morphology of SnO2 is investigated. SnO2 nanorods are characterized by X-ray ...
  • UV-Blue and Green Electroluminescence from Cu-Doped ZnO Nanorod Emitters Hydrothermally Synthesized on p-GaN 
    LUPAN, O.; PAUPORTE, T.; VIANA, B.; URSAKI, V. V.; TIGINYANU, I. M.; SONTEA, V.; CHOW, L. (American Scientific Publishers, 2012)
    Aqueous solution synthesis of ZnO nanorods on p-GaN(0001) is a low-temperature (< 100 C) and cost-efficient growth technique of high quality emitters for LED applications. We present morphological, optical and structural ...
  • Zinc Oxide Nanostructures: New Properties for Advanced Applications 
    LUPAN, Oleg; CHOW, Lee; PAUPORTÉ, Thierry (Technical University of Moldova, 2011)
    Zinc oxide is a material which exhibits a variety of new properties at nanometer dimensions. Various synthesis techniques have been carried out to provide growth of nanowires, nanorods, nanorings, nanosprings, and nanobelts ...
  • ZnO Micro/Nano Structures by MOCVD and Vapour Transport Technique: Growth and Characterization 
    RUSU, E.; BURLACU, A.; URSAKI, V.; STRATAN, G.; PURICA, M.; BUDIANU, E.; MONAICO, E. (IEEE, 2007)
    ZnO micro/nano structures were grown by metalo-organic chemical vapour deposition (MOCVD) and chemical vapour transport and condensation deposition process on Si and glass substrates. Using MOCVD method were grown uniform ...

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