Articole ştiinţifice: Recent submissions

  • Nanowire networks: three-dimensional SnO2 nanowire networks for multifunctional applications: from high-temperature stretchable ceramics to ultraresponsive sensors 
    PAULOWICZ, Ingo; HRKAC, Viktor; KAPS, Sören; CRETU, Vasilii; LUPAN, Oleg; BRANISTE, Tudor; DUPPEL, Viola; TIGINYANU, Ion; KIENLE, Lorenz; ADELUNG, Rainer; MISHRA, Yogendra Kumar (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2015)
    Stretchable three-dimensional ceramic networks constructed from quasi-one-dimensional metal oxide nanostructures are versatile candidates for using nanoscopic structures in everyday technologies. The growth of such networks ...
  • Properties of ZnO:Fe nanostructured films grown by successive chemical synthesis 
    POSTICA, V.; HOPPE, M.; ABABII, N.; TROFIM, V.; RAILEAN, S.; ADELUNG, R.; LUPAN, O. (Institute of Electrical and Electronics Engineerings, IEEE, 2016)
    Rapid progress of nanotechnology in recent years and continuous minimization of portable devices created the necessity of multifunctional devices elaboration. In this work, the morphological, structural and sensing properties ...
  • Single Nanowire-based Nanosensors 
    LUPAN, Oleg; ADELUNG, Rainer; PAUPORTE, Thierry; KIENLE, Lorenz; TIGINYANU, Ion; CHOW, Lee (Institutul de Fizică Aplicată al AŞM, 2017)
    Noble metals, such as Pd, Ag, Pt, Au and Ru, are known to be very effective catalysts and help in the improvement of the metal oxides sensing properties. A series of methods have been proposed to incorporate these metals ...
  • Flame based growth of ZnO nano- and microstructures for advanced optical, multifunctional devices, and biomedical applications (Conference Presentation) 
    MISHRA, Yogendra K.; GRÖTTRUP, Jorit; SMAZNA, Daria; HÖLKEN, Iris; HOPPE, Mathias; SINDUSHREE, Sindushree; KAPS, Sören; LUPAN, Oleg; SEIDEL, Jan; MONTEIRO, Teresa; TIGINYANU, Ion M.; KIENLE, Lorenz; RONNING, Carsten; SCHULTE, Karl; FIEDLER, Bodo; ADELUNG, Rainer (SPIE, Society of Photo-Optical Instrumentation Engineers, 2017)
    The ZnO micro- and nanoneedles grown at walls in silicon trenches showed excellent whispering gallery mode resonances and photocatalytic properties. Using the same strategy, large polycrystalline micro- and nanostructured ...
  • Individual Bi2O3-Functionalized ZnO Microwire for Hydrogen Gas Detection 
    POSTICA, V.; LUPAN, O.; GRÖTTRUP, J.; ADELUNG, R. (Springer Nature Switzerland, 2018)
    Individual micro- and nanostructures of metal oxides are known to be highly sensitive to surface phenomena due to their enhanced surface-to-volume ratio. In this work, an individual Bi2O3-functionalized ZnO microwire ...
  • Nanosensors on a single semiconducting oxide nanowire 
    LUPAN, Oleg; POSTICA, Vasile; ADELUNG, Rainer (Academia de Ştiinţe a Moldovei, 2019)
    The room-temperature nanosensors are demanded from different fields, such as rapid detection of hazardous, explosive and nocive gases, compounds and various risky nanomaterials. Due to their huge surface-to-volume ratio ...
  • Sensor Array on Nanowires CuO/Cu2O/Cu Heterojunction Net 
    ABABII, Nicolai; SIEBERT, Leonard; LUPAN, Oleg; CREŢU, Vasilii; ADELUNG, Rainer (Academia de Ştiinţe a Moldovei, 2019)
    In this work, for the first time, acetone sensors based on nanowire CuO/Cu2O/Cu heterojunctions have been designed, obtained and investigated using the single-stage 3D printing method. By thermal oxidation of Cu microparticles ...
  • Structuri columnare de oxizi semiconductori pentru senzori selectivi de gaze: realizări şi provocări 
    LUPAN, Oleg; POSTICA, Vasile (Academia de Ştiinţe a Moldovei, 2019)
    Autorii sintetizează rezultatele cercetărilor sale experimentale pe care le-au desfășurat în cadrul Centrului de Nanotehnologii și Nanosenzori, Universitatea Tehnică a Moldovei. Una dintre direcțiile importante ale Centrului ...
  • Surface functionalization of ZnO:Ag columnar thin films with AgAu and AgPt bimetallic alloy nanoparticles as an efficient pathway for highly sensitive gas discrimination and early hazard detection in batteries 
    VAHL, Alexander; LUPAN, Oleg; SANTOS-CARBALLAL, David; POSTICA, Vasile; HANSEN, Sandra; CAVERS, Heather; WOLFF, Niklas; TERASA, Maik-Ivo; HOPPE, Mathias; CADI-ESSADEK, Abdelaziz; DANKWORT, Torben; KIENLE, Lorenz; DE LEEUW, Nora H.; ADELUNG, Rainer; FAUPEL, Franz (The Royal Society of Chemistry, 2020)
    We report herein, a novel approach to tailor the selectivity of nanocomposite thin film sensors by investigating systematically the effect of surface decoration of Ag-doped ZnO (ZnO:Ag) columnar thin films. We have used ...
  • 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 ...
  • Highly selective and ultra-low power consumption metal oxide based hydrogen gas sensor employing graphene oxide as molecular sieve 
    RASCH, Florian; POSTICA, Vasile; SCHÜTT, Fabian; MISHRA, Yogendra Kumar; NIA, Ali Shaygan; LOHE, Martin R.; FENG, Xinliang; ADELUNG, Rainer; LUPAN, Oleg (ELSEVIER, 2020)
    The excellent gas sensing performance of metal oxide based nano- and microstructures, including a fast response time and good sensitivity, is typically limited by their low selectivity. Therefore, novel approaches and ...
  • Microtechnology with SILAR and RPP for semiconductor oxide gas sensors 
    SHISHIYANU, S. T.; SHISHIYANU, T. S.; LUPAN, O. I. (Institute of Electrical and Electronics Engineerings, IEEE, 2005)
    Microtechnology with Successive Ionic Layer Adsorption and Reaction (SILAR) technique and rapid photothermal processing (RPP) was elaborated and applied for semiconductor oxides gas sensors. The experimental results shown ...
  • Rapid Photothermal Processing for Silicon Solar Cells Fabrication 
    SHISHIYANU, S.; SINGH, R.; SHISHIYANU, T.; LUPAN, O.; RAILEAN, S.; SARGU, S. (Institute of Electrical and Electronics Engineerings, IEEE, 2006)
    In our report we demonstrated the advantage of the rapid photothermal processing (RPP) technology compare to conventional furnace technology for solar cells fabrication: short time, low thermal budget and low temperature ...
  • Doping Effects on Optical Properties of Low Temperature Grown ZnO Nanorod Arrays 
    LUPAN, O.; TIGINYANU, I.; URSAKI, V.; CHOW, L. (NSTI, 2010)
    In this work, we explore the influence of Ag dopant concentration on the structural and optical properties of ZnO nanorods synthesized by hydrothermal technique. We present original results of a systematic investigation ...
  • Study of vesicle size distribution dependence on pH value based on nanopore resistive pulse method 
    LIN, Yuqing; RUDZEVICH, Yauheni; WEARNE, Adam; LUMPKIN, Daniel; MORALES, Joselyn; NEMEC, Kathleen; TATULIAN, Suren; LUPAN, Oleg; CHOW, Lee (American Physical Society, 2013)
    Vesicles are low-micron to sub-micron spheres formed by a lipid bilayer shell and serve as potential vehicles for drug delivery. The size of vesicle is proposed to be one of the instrumental variables affecting delivery ...
  • Nanonetworks: Rapid Fabrication Technique for Interpenetrated ZnO Nanotetrapod Networks for Fast UV Sensors (Adv. Mater. 10/2014) 
    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)
    Flame transport synthesis (FTS) offers a unique fabrication technique for different nano-microtetrapods and their interconnected networks. Using the FTS method, interconnected ZnO nanotetrapod networks are fabricated ...
  • Effect of rapid thermal annealing on properties of ZnO:Ag nanostructures 
    POSTICA, Vasile; LUPAN, Oleg; ADELUNG, Rainer; PAUPORTÉ, Thierry (Society of Photo-Optical Instrumentation Engineers, SPIE, 2017)
    Previous reports clearly demonstrates that Ag-doping of ZnO lead to the diminution of the concentration of donor defects for the compensation of the n-type conductivity [1], while thermal annealing (TA) and rapid treatment ...
  • H2 gas sensing properties of a ZnO/CuO and ZnO/CuO/Cu2O Heterostructures 
    ABABII, N.; POSTICA, V.; HOPPE, M.; ADELUNG, R.; LUPAN, O.; RAILEAN, S.; PAUPORTÉ, T.; VIANA, B. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2017)
    The most important parameters of gas sensors are sensitivity and especially high selectivity to specific chemical species. To improve these parameters we developed sensor structures based on layered semiconducting oxides, ...
  • Single nanowire nanosensors: Fabrication and detailed studies 
    LUPAN, O.; POSTICA, V.; LAZARI, E.; GRÖTTRUP, J.; KAIDAS, V.; ADELUNG, R. (IEEE, 2017)
    Individual metal oxide nanostructures are ideal building blocks for ultra-low-power and high performance sensing devices. Due to their multifunctionality, they are promising candidates for future optoelectronic and gas ...
  • Synthesis and optical properties of Ga2O3 nanowires grown on GaS substrate 
    LEONTIE, Liviu; SPRINCEAN, Veaceslav; UNTILA, Dumitru; SPALATU, Nicolae; CARAMAN, Iuliana; COJOCARU, Ala; ŞUŞU, Oana; LUPAN, Oleg; EVTODIEV, Igor; VATAVU, Elmira; TIGINYANU, Ion; CARLESCU, Aurelian; CARAMAN, Mihail (ELSEVIER, 2019)
    Gallium oxide (β-Ga2O3) nanowires were synthesized by heat treatment of single crystal β-GaS plates in air. Crystal structure and composition of synthesized materials were studied by X-ray diffraction, energy dispersive ...

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