Browsing by Author "ADELUNG, Rainer"

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  • Effect of Al Sn — Doping on properties of zinc oxide nanostructured films grown by magnetron sputtering 
    GHIMPU, Lidia; TIGINYANU, Ion; LUPAN, Oleg; MISHRA, Yogendra Kumar; PAULOWICZ, Ingo; GEDAMU, Dawit; COJOCARU, Ala; ADELUNG, Rainer (IEEE, 2013)
    Metal doping in nanostructured zinc oxide is important for device applications. To obtain improved performances for practical applications, Aluminum (Al) and Tin (Sn)-doping in zinc oxide nanostructured layers were ...
  • 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 ...
  • Effect of noble metal functionalization and film thickness on sensing properties of sprayed TiO2 ultra-thin films 
    ABABII, Nicolai; HOPPE, Mathias; SHREE, Sindu; VAHL, Alexander; ULFA, Maria; PAUPORTÉ, Thierry; VIANA, Bruno; CRETU, Vasilii; MAGARIU, Nicolae; POSTICA, Vasile; SONTEA, Victor; TERASA, Maik-Ivo; POLONSKYI, Oleksandr; FAUPEL, Franz; ADELUNG, Rainer; LUPAN, Oleg (ELSEVIER, 2019)
    In this paper, the effect of the thickness of nano-structured TiO2 thin films (12–40nm) and successive deposition of different noble metal nanoparticles on the performances of propanol vapor and H2 gas sensors was investigated. ...
  • 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 ...
  • Electromagnetic interference shielding in X-band with aero-GaN 
    DRAGOMAN, Mircea; BRANISTE, Tudor; IORDANESCU, Sergiu; ALDRIGO, Martino; RAEVSCHI, Simion; SHREE, Sindu; ADELUNG, Rainer; TIGINYANU, Ion (IOP Publishing, 2019)
    We investigate the electromagnetic shielding properties of an ultra-porous lightweight nanomaterial named aerogalnite (aero-GaN). Aero-GaN is made up of randomly arranged hollow GaN microtetrapods, which are obtained by ...
  • Enhanced ethanol vapour sensing performances of copper oxide nanocrystals with mixed phases 
    LUPAN, Oleg; CRETU, Vasilii; POSTICA, Vasile; ABABII, Nicolai; POLONSKYI, Oleksandr; KAIDAS, Victor; SCHÜTT, Fabian; MISHRA, Yogendra K.; MONAICO, Eduard; TIGINYANU, Ion; SONTEA, Victor; STRUNSKUS, Thomas; FAUPEL, Franz; ADELUNG, Rainer (ELSEVIER, 2016)
    The present study reports on nano-crystalline copper oxide thin films via a simple synthesis from chemical solutions (SCS) followed by two types of thermal annealing, namely rapid thermal annealing (RTA) and conventional ...
  • Enhanced UV and ethanol vapour sensing of a single 3-D ZnO tetrapod alloyed with Fe2O3 nanoparticles 
    LUPAN, Oleg; POSTICA, Vasile; GRÖTTRUP, Jorit; MISHRA, Abhishek K.; DE LEEUW, Nora H.; ADELUNG, Rainer (ELSEVIER, 2017)
    Fabrication of multifunctional devices based on nano- and microstructures of a single semiconducting oxide is an important step for a better understanding of their maximum sensing properties and the base for the development ...
  • Enhancement in UV sensing properties of ZnO:Ag nanostructured films by surface functionalization with noble metalic and bimetallic nanoparticles 
    POSTICA, Vasile; VAHL, Alexander; MAGARIU, Nicolae; TERASA, Maik-Ivo; HOPPE, Mathias; VIANA, Bruno; ASCHEHOUG, Patrick; PAUPORTÉ, Thierry; TIGINYANU, Ion; POLONSKYI, Oleksandr; SONTEA, Victor; CHOW, Lee; KIENLE, Lorenz; ADELUNG, Rainer; FAUPEL, Franz; LUPAN, Oleg (Universitatea Tehnică a Moldovei, 2018)
    In this study, Ag-doped ZnO (ZnO:Ag) nanostructured films were functionalized with silver nanoparticles (Ag NPs), silver-platinum bimetallic nanoparticles (AgPt NPs) and silver-gold bimetallic NPs (AgAu NPs) using a gas ...
  • Fabrication and characterization of flexible composite material based on Aerographite/InP micro-nanostructures 
    PLESCO, Irina; STROBEL, Julian; SCHÜTT, Fabian; GORCEAC, Leonid; CINIC, Boris; HIMCINSCHI, Cameliu; MISHRA, Yogendra Kumar; KIENLE, Lorenz; ADELUNG, Rainer; TIGINYANU, Ion (Technical University of Moldova, 2017)
    The goal of this work is to extend the class of flexible hybrid nanomaterials based on aerographite scaffolds. For this purpose, we developed the technological conditions for the deposition of InP:Zn micro- and nanostructures ...
  • Fabrication of ZnO Nanobrushes by H2–C2H2 Plasma Etching for H2 Sensing Applications 
    KOHLMANN, Niklas; HANSEN, Luka; LUPAN, Cristian; SCHÜRMANN, Ulrich; REIMERS, Armin; SCHÜTT, Fabian; ADELUNG, Rainer; KERSTEN, Holger; KIENLE, Lorenz (American Chemical Society, 2021)
    In this work the formation of novel ZnO nanobrushes by plasma etching treatment as a new approach is presented. The morphology and structure of the ZnO nanobrushes are studied in detail by transmission and scanning electron ...
  • Facile fabrication of semiconducting oxide nanostructures by direct ink writing of readily available metal microparticles and their application as low power acetone gas sensors 
    SIEBERT, Leonard; WOLFF, Niklas; ABABII, Nicolai; TERASA, Maik-Ivo; LUPAN, Oleg; VAHL, Alexander; DUPPEL, Viola; QIU, Haoyi; TIENKEN, Maik; MIRABELLI, Mattia; SONTEA, Victor; FAUPEL, Franz; KIENLE, Lorenz; ADELUNG, Rainer (ELSEVIER, 2020)
    In this work, a facile two-step fabrication and characterization of printed acetone sensors based on mixed semiconducting metal oxides is introduced. The devices are fabricated by Direct Ink Writing metal microparticle ...
  • 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 ...
  • Flexible pressure sensor based on graphene aerogel microstructures functionalized with CdS nanocrystalline thin film 
    PLESCO, Irina; DRAGOMAN, Mircea; STROBEL, Julian; GHIMPU, Lidia; SCHÜTT, Fabian; DINESCU, Adrian; URSAKI, Veaceslav; KIENLE, Lorenz; ADELUNG, Rainer; TIGINYANU, Ion (ELSEVIER, 2018)
    In this paper, we report on functionalization of graphene aerogel with a CdS thin film deposited by magnetron sputtering and on the development of flexible pressure sensors based on ultra-lightweight CdS-aerogel nanocomposite. ...
  • Functionalized Pd/ZnO Nanowires for Nanosensors 
    LUPAN, Oleg; POSTICA, Vasile; ADELUNG, Rainer; LABAT, Frédéric; CIOFINI, Ilaria; SCHÜRMANN, Ulrich; KIENLE, Lorenz; CHOW, Lee; VIANA, Bruno; PAUPORTÉ, Thierry (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2018)
    A method for surface doping and functionalization of ZnO nanowires (NWs) with Pd (Pd/ZnO) in a one-step process is presented. The main advantage of this method is to combine the simultaneous growth, surface doping, and ...
  • Heterostructure-based devices with enhanced humidity stability for H2 gas sensing applications in breath tests and portable batteries 
    LUPAN, Oleg; ABABII, Nicolai; MISHRA, Abhishek Kumar; BODDULURI, Mani Teja; MAGARIU, Nicolae; Alexander VAHL, Alexander VAHL; KRÜGER, Helge; WAGNER, Bernhard; FAUPEL, Franz; ADELUNG, Rainer; LEEUW, Nora H. de; HANSEN, Sandra (Elsevier, 2021)
    Semiconducting metal oxide - based gas sensors exhibit outstanding sensitivity, although humidity in the analyte typically hampers precise measurements. In this work it was shown that a 5−6 nm thin Al2O3 nano-layer is ...
  • Hierarchical Aerographite 3D flexible networks hybridized by InP micro/nanostructures for strain sensor applications 
    PLESCO, Irina; STROBEL, Julian; SCHÜTT, Fabian; HIMCINSCHI, Cameliu; BEN SEDRINE, Nabiha; MONTEIRO, Teresa; CORREIA, Maria Rosário; GORCEAC, Leonid; CINIC, Boris; URSAKI, Veaceslav; MARX, Janik; FIEDLER, Bodo; MISHRA, Yogendra Kumar; KIENLE, Lorenz; ADELUNG, Rainer; TIGINYANU, Ion (Springer Nature Limited, 2018)
    In the present work, we report on development of three-dimensional flexible architectures consisting of an extremely porous three-dimensional Aerographite (AG) backbone decorated by InP micro/nanocrystallites grown by a ...
  • High-Performance Gas Sensors Using Heterostructures based on Binary and Ternary Metal Oxides 
    ABABII, Nicolai; BODDULURI, Mani Teja; KRÜGER, Helge; HANSEN, Sandra; POSTICA, Vasile; LUPAN, Oleg; ADELUNG, Rainer (IEEE, 2021)
    The gas sensing properties of heterojunctions based on binary and ternary metal oxides (CuAl 2 O 4 /Al 2 O 3 /CuO/Cu 2 O, ZnAl 2 O 4 /ZnO and Zn 2 SnO 4 ) were investigated in detail and demonstrated excellent sensitivity ...
  • Highly Porous and Ultra-Lightweight Aero-Ga2O3: Enhancement of Photocatalytic Activity by Noble Metals 
    PLESCO, Irina; CIOBANU, Vladimir; BRANISTE, Tudor; URSAKI, Veaceslav; RASCH, Florian; SARUA, Andrei; RAEVSCHI, Simion; ADELUNG, Rainer; DUTTA, Joydeep; TIGINYANU, Ion (MDPI, 2021)
    A new type of photocatalyst is proposed on the basis of aero-β-Ga2O3, which is a material constructed from a network of interconnected tetrapods with arms in the form of microtubes with nanometric walls. The aero-Ga2O3 ...
  • 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 ...
  • Hydrogen detection by individual Pd-modified ZnO nanowire 
    LUPAN, Oleg; PAUPORTÉ, Thierry; POSTICA, Vasile; VIANA, Bruno; ADELUNG, Rainer; CHOW, Lee; TIGINYANU, Ion (Technical University of Moldova, 2017)
    In this work an individual Pd-modified ZnO nanowire (Pd/ZnO NW) was integrated into a nanosensor device using focused ion beam (FIB)/scanning electron microscopy (SEM) system. The Pd/ZnO arrays were synthesized by ...

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