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Browsing Articole din publicaţii internaţionale by Author "ADELUNG, Rainer"

Browsing Articole din publicaţii internaţionale by Author "ADELUNG, Rainer"

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  • 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 ...
  • 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 ...
  • Improved Long-Term Stability and Reduced Humidity Effect in Gas Sensing: SiO2 Ultra-Thin Layered ZnO Columnar Films 
    POSTICA, Vasile; LUPAN, Oleg; GAPEEVA, Anna; HANSEN, Luka; KHALEDIALIDUSTI, Rasoul; MISHRA, Abhishek Kumar; DREWES, Jonas; KERSTEN, Holger; FAUPEL, Franz; ADELUNG, Rainer; HANSEN, Sandra (John Wiley & Sons, Inc., 2021)
    The undoped and metal-doped zinc oxide columnar films (ZnO:Sn, ZnO:Fe, ZnO:Ag, and ZnO:Cu) are covered with an ultra-thin layer of SiO2 (10–20 nm). The electrical, UV, and volatile organic compounds (VOCs) sensing properties ...
  • 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 ...
  • Individual CdS-covered aerographite microtubes for room temperature VOC sensing with high selectivity 
    GHIMPU, Lidia; LUPAN, Oleg; POSTICA, Vasile; STROBEL, Julian; KIENLE, Lorenz; TERASA, Maik-Ivo; MINTKEN, Mona; TIGINYANU, Ion; MARX, Janik; FIEDLER, Bodo; ADELUNG, Rainer (ELSEVIER, 2019)
    The synthesis of new nanomaterials with a large surface-to-volume ratio is of high interest for sensing applications, and especially for gas sensors with high performances. In this work, a thin layer of CdS is deposited ...
  • Individual hollow and mesoporous aero-graphitic microtube based devices for gas sensing applications 
    LUPAN, Oleg; POSTICA, Vasile; MARX, Janik; MECKLENBURG, Matthias; MISHRA, Yogendra K.; SCHULTE, Karl; FIEDLER, Bodo; ADELUNG, Rainer (American Institute of Physics, 2017)
    In this work, individual hollow and mesoporous graphitic microtubes were integrated into electronic devices using a FIB/SEM system and were investigated as gas and vapor sensors by applying different bias voltages (in the ...
  • Influence of Silsesquioxane-Containing Ultra-Thin Polymer Films on Metal Oxide Gas Sensor Performance for the Tunable Detection of Biomarkers 
    LUPAN, Oleg; BRINZA, Mihai; PIEHL, Julia; ABABII, Nicolai; MAGARIU, Nicolae; ZIMOCH, Lukas; STRUNSKUS, Thomas; PAUPORTE, Thierry; ADELUNG, Rainer; FAUPEL, Franz; SCHRÖDER, Stefan (MDPI (Basel, Switzerland), 2024)
    Certain biomarkers in exhaled breath are indicators of diseases in the human body. The non-invasive detection of such biomarkers in human breath increases the demand for simple and cost-effective gas sensors to replace ...
  • Integration of individual TiO2 nanotube on the chip: Nanodevice for hydrogen sensing 
    ENACHI, Mihail; LUPAN, Oleg; BRANISTE, Tudor; SARUA, Andrei; CHOW, Lee; MISHRA, Yogendra K.; GEDAMU, Dawit; ADELUNG, Rainer; TIGINYANU, Ion (WILEY-VCH Verlag GmbH \&Co. KGaA, Weinheim, 2015)
    Titania (TiO2) exists in several phases possessing different physical properties. In view of this fact, we report on three types of hydrogen sensors based on individual TiO2 nanotubes (NTs) with three different structures ...

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