Articole din publicaţii internaţionale: Recent submissions

  • UV nanophotodetectors: A case study of individual Au-modified ZnO nanowires 
    LUPAN, Oleg; POSTICA, Vasile; PAUPORTÉ, Thierry; HOPPE, Mathias; ADELUNG, Rainer (ELSEVIER, 2019)
    In this work, ultraviolet (UV) nanophotodetectors based on individual gold-functionalized ZnO nanowires (Au/ZnO NWs) with different diameters and with different Au content were fabricated using a focused ion beam/scanning ...
  • Impact of Rapid Photothermal Processing on Properties of ZnO Nanostructures for Solar Cell Applications 
    SHISHIYANU, S.; SINGH, R.; SHISHIYANU, T.; LUPAN, O. (Institute of Electrical and Electronics Engineerings, IEEE, 2006)
    The nanotechnology with chemical deposition (CD) and rapid photothermal processing (RPP) of nanostructured ZnO thin films for solar cell applications was elaborated. The influence of growth processes and the impact of RPP ...
  • 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, ...
  • Optical and sensory properties of ZnO nanofibrous layers grown by magnetron sputtering 
    GHIMPU, L.; TIGINYANU, I. M.; URSAKI, V.; LUPAN, O.; CHOW, L.; RUDZEVICH, Y.; LIN, Y. (Institute of Electrical and Electronics Engineerings, IEEE, 2012)
    This paper presents optical and sensory properties of ZnO nanofirous layers grown by a cost-effective and fast fabrication method based on magnetron sputtering. The as-prepared nanofibrous layers show good conductive ...
  • Improving gas sensing by CdTe decoration of individual Aerographite microtubes 
    STROBEL, Julian; GHIMPU, Lidia; POSTICA, Vasile; LUPAN, Oleg; ZAPF, Maximilian; SCHÖNHERR, Sven; RÖDER, Robert; RONNING, Carsten; SCHÜTT, Fabian; MISHRA, Yogendra Kumar; TIGINYANU, Ion; ADELUNG, Rainer; MARX, Janik; FIEDLER, Bodo; KIENLE, Lorenz (IOP Publishing Ltd, 2018)
    Novel gas sensors have been realized by decorating clusters of tubular Aerographite with CdTe using magnetron sputtering techniques. Subsequently, individual microtubes were separated and electrically contacted on a SiO2/Si ...
  • Room temperature gas nanosensors based on individual and multiple networked Au-modified ZnO nanowires 
    LUPAN, Oleg; POSTICA, Vasile; PAUPORTÉ, Thierry; VIANA, Bruno; TERASA, Maik-Ivo; ADELUNG, Rainer (ELSEVIER, 2019)
    In this work, we investigated performances of individual and multiple networked Au nanoparticles (NPs)-functionalized ZnO nanowires (NWs) integrated into nanosensor devices using dual beam focused ion beam/scanning electron ...
  • Effect of Sn Dopant on the Properties of ZnO Nanorod Arrays 
    LUPAN, O.; CHOW, L.; URSAKI, V.; MONAICO, E.; TIGINYANU, I.; SHISHIYANU, S.; SHISHIYANU, T.; PARK, S.; SCHULTE, A. (Institute of Electrical and Electronics Engineerings, IEEE, 2007)
    Sn-doped ZnO nanorod arrays were synthesized by a novel method combining the aqueous solution process with post-growth rapid photothermal processing (RPP). The post-growth RPP of Sn-doped ZnO nanostrnctures at 700 degC in ...
  • Controlling the properties of electrodeposited ZnO nanowire arrays for light emitting diode, photodetector and gas sensor applications 
    PAUPORTÉ, T.; LUPAN, Oleg; VIANA, Bruno; CHOW, Lee; TCHERNYCHEVA, Maria (SPIE, 2014)
    Electrochemical deposition (ECD) is a versatile technique for the preparation of ZnO nanowires (NWs) and nanorods (NRs) with high structural and optical quality. The bandgap of the ZnO NWs can be engineered by doping. ...
  • Synthesis and gas sensor applications of nanostructured ZnO grown at low temperatures 
    LUPAN, Oleg; PAUPORTE, Thierry; CHOW, Lee (TUBIITAK, 2014)
    ZnO nanoarchitecture-based nano- and microdevices came into the focus due to their multifunctional operation. In this work, we summarize cost-effective procedures to grow ZnO nano- and microstructures, namely hydrothermal ...
  • Microsensor on single ZnO microwire 
    CHAI, G.; RUSU, E.; CHOW, L.; STRATAN, G. I.; HEINRICH, H.; PARK, S.; SCHULTE, A.; LUPAN, O.; TROFIM, V.; RAILEAN, S. (Institute of Electrical and Electronics Engineerings, IEEE, 2009)
    For development of individual ZnO microwire in hydrogen sensors an environmentally benign synthesis process and fabrication route are required. Here we report a synthesis route for ZnO microwires using vapour phase process. ...
  • 3D-Printed Chemiresistive Sensor Array on Nanowire CuO/Cu2O/Cu Heterojunction Nets 
    SIEBERT, Leonard; LUPAN, Oleg; MIRABELLI, Mattia; ABABII, Nicolai; TERASA, Maik-Ivo; KAPS, Sören; CRETU, Vasilii; VAHL, Alexander; FAUPEL, Franz; ADELUNG, Rainer (American Chemical Society, 2019)
    In this work, the one-step three-dimensional (3D) printing of 20 nm nanowire (NW)-covered CuO/Cu2O/Cu microparticles (MPs) with diameters of 15–25 μm on the surface of the glass substrate forming an ordered net is successfully ...
  • ZnAl2O4-Functionalized Zinc Oxide Microstructures for Highly Selective Hydrogen Gas Sensing Applications 
    HOPPE, Mathias; LUPAN, Oleg; POSTICA, Vasile; WOLFF, Niklas; DUPPEL, Viola; KIENLE, Lorenz; TIGINYANU, Ion; ADELUNG, Rainer (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2018)
    In this work, a simple method of ZnAl2O4-functionalization of ZnO microstructures is presented. The different characterization methods (structural, chemical, and micro-Raman) demonstrated the presence of only ZnO and ZnAl2O4 ...
  • The impact of O2/Ar ratio on morphology and functional properties in reactive sputtering of metal oxide thin films 
    VAHL, A.; DITTMANN, J.; JETTER, J.; VEZIROGLU, S.; SHREE, S.; ABABII, N.; LUPAN, O.; AKTAS, O. C.; STRUNSKUS, T.; QUANDT, E.; ADELUNG, R.; SHARMA, S. K.; FAUPEL, F. (IOP Publishing Ltd, 2019)
    Morphology is a critical parameter for various thin film applications, influencing properties like wetting, catalytic performance and sensing efficiency. In this work, we report on the impact of oxygen partial flow on the ...
  • Tuning ZnO Sensors Reactivity toward Volatile Organic Compounds via Ag Doping and Nanoparticle Functionalization 
    POSTICA, Vasile; VAHL, Alexander; SANTOS-CARBALLAL, David; DANKWORT, Torben; KIENLE, Lorenz; HOPPE, Mathias; CADI-ESSADEK, Abdelaziz; DE LEEUW, Nora H.; TERASA, Maik-Ivo; ADELUNG, Rainer; FAUPEL, Franz; LUPAN, Oleg (American Chemical Society, 2019)
    Nanomaterials for highly selective and sensitive sensors toward specific gas molecules of volatile organic compounds (VOCs) are most important in developing new-generation of detector devices, for example, for biomarkers ...
  • Optical properties of Sm-doped ceria nanostructured films grown by electrodeposition at low temperature 
    URSAKI, V. V.; LAIR, V.; ŻIVKOVIĆ, L.; CASSIR, M.; RINGUEDÉ, A.; LUPAN, O. (ELSEVIER, 2012)
    Nanostructured undoped and samarium doped ceria thin nanocolumnar films are electrodeposited onto (FTO) glass substrates at low-temperature (30°C) with a subsequent thermal annealing at 600°C for 1h. Films are obtained ...
  • Magnetron Sputtering and Characterization of Doped Zinc Oxide Nanofibrous Films and Their Applications 
    LUPAN, O.; GHIMPU, L.; REIMER, T.; HOPPE, M.; PAULOWICZ, I.; GEDAMU, D.; MISHRA, Y. K.; HAMMERICH, D.; CHEMNITZ, S.; CRETU, V.; TIGINYANU, I.; ADELUNG, R. (American Scientific Publishers, 2014)
    We report on the role played by different types of dopants, namely, Tin and Aluminum on the properties of zinc oxide nanofibrous films prepared by RF magnetron sputtering on substrates in pure Argon atmosphere. The influence ...
  • Al-Doped ZnO Nanowires by Electrochemical Deposition for Selective VOC Nanosensor and Nanophotodetector 
    PAUPORTÉ, Thierry; LUPAN, Oleg; POSTICA, Vasile; HOPPE, Mathias; CHOW, Lee; ADELUNG, Rainer (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2018)
    Nanomaterials for new nanosensor systems with selective detection of hazardous volatile organic compounds (VOCs) vapors are of great demand nowadays. In this paper, the use in nanosensors of electrochemically deposited ...
  • The effect of morphology and functionalization on UV detection properties of ZnO networked tetrapods and single nanowires 
    POSTICA, Vasile; PAULOWICZ, Ingo; LUPAN, Oleg; SCHÜTT, Fabian; WOLFF, Niklas; COJOCARU, Ala; MISHRA, Yogendra Kumar; KIENLE, Lorenz; ADELUNG, Rainer (ELSEVIER, 2019)
    Rapid detection and fast response of nanoelectronic devices based on semiconducting oxides is nowadays a modern and stringent subject of research. Device performances depend mainly on the morphologies of the metal oxide ...
  • Low-Temperature Solution Synthesis of Au-Modified ZnO Nanowires for Highly Efficient Hydrogen Nanosensors 
    LUPAN, Oleg; POSTICA, Vasile; WOLFF, Niklas; SU, Jun; LABAT, Frédéric; CIOFINI, Ilaria; CAVERS, Heather; ADELUNG, Rainer; POLONSKYI, Oleksandr; FAUPEL, Franz; KIENLE, Lorenz; VIANA, Bruno; PAUPORTÉ, Thierry (American Chemical Society, 2019)
    In this research, the low-temperature single-step electrochemical deposition of arrayed ZnO nanowires (NWs) decorated by Au nanoparticles (NPs) with diameters ranging between 10 and 100 nm is successfully demonstrated for ...
  • Neutron Transmutation Doping and Radiation Hardness for Solution-Grown Bulk and Nano-Structured ZnO 
    FLITSIYAN, E.; SWARTZ, C.; PEALE, R. E.; LUPAN, O.; CHERNYAK, L.; CHOW, L.; VERNETSON, W. G.; DASHEVSKY, Z. (Cambridge University Press, 2011)
    It is shown that solution-grown ZnO nanostructures exhibit enhanced radiation hardness against neutron irradiation as compared to bulk material. The decrease of the cathodoluminescence intensity after irradiation at a ...

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