IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Articole din publicaţii internaţionale by Title

Browsing Articole din publicaţii internaţionale by Title

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  • UV detection properties of hybrid ZnO tetrapod 3-D networks 
    GRÖTTRUP, J.; POSTICA, V.; SMAZNA, D.; HOPPE, M.; KAIDAS, V.; MISHRA, Y. K.; LUPAN, O.; ADELUNG, R. (ELSEVIER, 2017)
    Hybridization of micro- and nanostructures of semiconducting oxides is known to be an efficient way to greatly improve their sensing properties and photocatalytic activity. In this work, zinc oxide (ZnO) tetrapod (T) ...
  • UV nanophotodetector based on a single ZnO:Au nanowire functionalized with Au-nanoparticles 
    POSTICA, V.; PAUPORTÉ, Th.; VIANA, B.; CAVERS, H.; HOPPE, M.; ADELUNG, R.; LUPAN, O. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2020)
    In this work, an individual nanowire of zinc oxide (ZnO-NW), decorated with gold nanoparticles (Au-NPs/ZnO-NW), was integrated in a nanophotodetector using a dual beam focused electron/ion beam (FIB/SEM) system. Au-NPs/ZnO-NW ...
  • 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 ...
  • UV photodetector based on Ag-doped ZnO nanostructured films 
    POSTICA, Vasilie; CREŢU, Vasilii; TROFIM, Viorel; RAILEAN, Sergey; SONTEA, Victor; LUPAN, Oleg (Institutul de Fizică Aplicată al AŞM, 2014)
    In this work, we present an UV detector based on nanostructured films of Ag-doped ZnO deposited using successive chemical synthesis SCS method. By varying duration and temperature of thermal annealing in furnace (TA) and ...
  • UV radiation and CH4 gas detection with a single ZnO:Pd nanowire 
    LUPAN, O.; ADELUNG, R.; POSTICA, V.; ABABII, N.; SHOW, L.; VIANA, B.; PAUPORTÉ, T. (SPIE, Society of Photo-Optical Instrumentation Engineers, 2017)
    There is an increasing demand for sensors to monitor environmental levels of ultraviolet (UV) radiation and pollutant gases. In this work, an individual nanowire of Pd modified ZnO nanowire (ZnO:Pd NW) was integrated in a ...
  • UV radiation sensors with unitary and binary superficial barrier 
    DOROGAN, Valerian; VIERU, Tatiana; KOSYAK, V.; DAMASKIN, I.; CHIRITA, F. (SPIE, 1998)
    UV radiation sensors with unitary and binary superficial barrier, made on the basis of GaP - SnO2 and GaAs - AlGaAs - SnO2 heterostructures, are presented in the paper. Technological and constructive factors, which permit ...
  • 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 ...
  • Valoarea simbolului în comunicarea vizuală pentru studenții arhitecți 
    HADJI-BANDALAC, Mariana (Institutul de Cercetari Economice şi Sociale “Gheorghe Zane”, Iaşi, 2021)
    This paper reflects the theoretical and practical ideas following the role of the symbol in visual communication and comprehension the transmitted message. The aim is assimilation of essential knowledge needed in the process ...
  • Valorificarea resurselor regenerabile ale Republicii Moldova în contextul integrării în UE 
    RUSU, Nicolae; LÎSÎI, Aliona (Academia de Studii Economice din Moldova, 2020)
    The problem of using alternative energy sources has been and remains very current both nationally and internationally, especially in the context of depletion of oil reserves, pollution generated by its use, but also the ...
  • Valorificarea tehnicii de croșetare tradițională în accesoriile moderne 
    FLOREA-BURDUJA, Elena; TOCARCIUC, Alina; CANGAȘ, Svetlana (Institutul Patrimoniului Cultural, 2021)
    Împletitul dantelelor / horboțelelor sau croșetarea este o modalitate tehnico-decorativă de împodobire a produselor țesute de uz casnic şi de înfrumusețare a locuințelor, de decorare a pieselor vestimentare şi de ritual. ...
  • Valorificarea tehnicilor şi procedeelor de lucru utilizate la confecţionarea bondiţei tradiţionale: studiu preliminar 
    ISCHIMJI, Ana; DANILA, Victoria; ISCHIMJI, Nicolai (Academia de Ştiinţe a Moldovei, 2020)
    The study of the traditional Moldovan bondita as a component part of the national costume contributes to the development of the sustainable use of the intangible cultural heritage. It is an objective of scientific exploitation ...
  • The valorisation of garlic (Allium sativum) biologically active compounds 
    CAPCANARI, Tatiana; COVALIOV, Eugenia; RADU, Oxana; CHIRSANOVA, Aurica (Galaţi University Press, 2023)
    The study emphasizes some physicochemical characteristics of garlic in terms of dry matter, sugar content, crude oil, pH, dry matter, ash, and some physical properties such as mass, length, width, and geometrical shape. ...
  • Valorization of winery waste. Case of the Republic of Moldova 
    DIACONU, Cristina; BUGAIAN, Larisa (Stefan cel Mare University of Suceava, Romania, 2021)
    The activity of enterprises in the wine sector is closely linked not only to the agro-cycle, but also to the biotechnological cycle, where by-products are also obtained in parallel with the basic products. The significant ...
  • Variable-range hopping conductivity in Cu2ZnGeSe4 single crystals 
    GUC, M.; LISUNOV, K. G.; HAJDEU, E.; LEVCENKO, S.; URSAKI, V.; ARUSHANOV, E. (ELSEVIER, 2014)
    Resistivity, ρ(T), of the Cu2ZnGeSe4 single crystals is investigated between T~10 and 300K. The Mott variable-range hopping (VRH) conductivity is observed in the temperature interval of ~80–230K. Analysis of the Mott VRH ...
  • Variante de prelucrare a răscroielii gâtului la cămășile tradiționale bărbătești 
    CAZAC, Viorica (Institutul Patrimoniului Cultural, 2021)
    Interpretarea actuală a cămășilor tradiționale bărbătești prin diverse forme de reprezentare a răscroielii gătului, în intenția de a le revitaliză, prezintă un interes sporit pentru studiu.
  • VCSEL study for gas sensing usage 
    VIERU, T.; DOROGAN, A.; VIERU, S.; DOROGAN, V. (Institutul de Fizică Aplicată al AŞM, 2012)
    The studied VCSEL device structure had been manufactored at Ecole Polytechnique Fédérale de Lausanne, Laboratory of Physics of Nanostructures in the framework of the SCOPES project. The LIV characteristics of VCSEL chips ...
  • Versatile Fabrication of Complex Shaped Metal Oxide Nano-Microstructures and Their Interconnected Networks for Multifunctional Applications 
    MISHRA, Yogendra Kumar; KAPS, Sören; SCHUCHARDT, Arnim; PAULOWICZ, Ingo; JIN, Xin; GEDAMU, Dawit; WILLE, Sebastian; LUPAN, Oleg; ADELUNG, Rainer (Hosokawa Powder Technology Foundation, 2014)
    Metal oxide nano-microstructures are applied in photocatalytic surfaces, sensors or biomedical engineering, proving the versatile utilization of nanotechnology. However, more complex or interconnected nano-microstructures ...
  • Versatile Growth of Freestanding Orthorhombic α-Molybdenum Trioxide Nano- and Microstructures by Rapid Thermal Processing for Gas Nanosensors 
    LUPAN, Oleg; CRETU, Vasilii; DENG, Mao; GEDAMU, Dawit; PAULOWICZ, Ingo; KAPS, Sören; MISHRA, Yogendra Kumar; POLONSKYI, Oleksandr; ZAMPONI, Christiane; KIENLE, Lorenz; TROFIM, Viorel; TIGINYANU, Ion; ADELUNG, Rainer (American Chemical Society, 2014)
    We demonstrate a new technique that requires a relatively low temperature of 670–800 °C to synthesize in 10–20 min high crystalline quality MoO3 nano- and microbelts and ribbons. The developed technological process allows ...
  • Vertical Axis Wind Turbines. Optimal Positioning of the Blades Defined by Asymmetrical Airfoils 
    BOSTAN, Viorel; BOSTAN, Ion; RABEI, Ivan; GUTU, Marin; DULGHERU, Valeriu (Springer Nature Switzerland, 2020)
    Many Vertical Axis Wind Turbines (VAWTs) have blades defined by asymmetrical (cambered) airfoils. There can be two possibilities regarding the orientation of their camber in relation to the rotor’s axis: radially inward ...
  • Vertical Axis Wind Turbines: The Behavior of Lift and Drag Airfoils 
    BOSTAN, Viorel; BOSTAN, Ion; RABEI, Ivan; DULGHERU, Valeriu; CIUPERCA, Rodion (Springer International Publishing, 2019)
    The blade is the most important element of a wind turbine, as it is the component that largely governs the productivity and it is the main source of efficiency optimization. A blade is defined by the airfoil type. This ...

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