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Browsing Articole din publicaţii internaţionale by Subject "tetrapods"

Browsing Articole din publicaţii internaţionale by Subject "tetrapods"

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  • Direct Growth of Freestanding ZnO Tetrapod Networks for Multifunctional Applications in Photocatalysis, UV Photodetection, and Gas Sensing 
    MISHRA, Yogendra Kumar; MODI, Gaurav; CRETU, Vasilii; POSTICA, Vasile; LUPAN, Oleg; REIMER, Tim; PAULOWICZ, Ingo; HRKAC, Viktor; BENECKE, Wolfgang; KIENLE, Lorenz; ADELUNG, Rainer (American Chemical Society, 2015)
    Here, we demonstrate the versatile and single-step synthesis of ZnO-T with different arm morphologies by a simple flame transport synthesis (FTS) approach, forming a network. Morphological evolutions and structural intactness ...
  • 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 ...
  • 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 ...
  • Hybridization of Zinc Oxide Tetrapods for Selective Gas Sensing Applications 
    LUPAN, O.; POSTICA, V.; GRÖTTRUP, J.; MISHRA, A. K.; DE LEEUW, N. H.; CARREIRA, J. F. C.; RODRIGUES, J.; BEN SEDRINE, N.; CORREIA, M. R.; MONTEIRO, T.; CRETU, V.; TIGINYANU, I.; SMAZNA, D.; MISHRA, Y. K.; ADELUNG, R. (American Chemical Society, 2017)
    In this work, the exceptionally improved sensing capability of highly porous three-dimensional (3-D) hybrid ceramic networks toward reducing gases is demonstrated for the first time. The 3-D hybrid ceramic networks are ...
  • Impact of size upon lasing in ZnO microtetrapods 
    ZALAMAI, V. V.; URSAKI, V. V.; TIGINYANU, I. M.; BURLACU, A.; RUSU, E. V.; KLINGSHIRN, C.; FALLERT, J.; SARTOR, J.; KALT, H. (Springer Nature Switzerland, 2010)
    High optical quality, well end leg faceted ZnO microtetrapods with leg length between 1 and 12 μm have been grown by carbothermal chemical vapor deposition. Lasing with mode quality factors of 2500–3000 is demonstrated. ...
  • Multifunctional Materials: A Case Study of the Effects of Metal Doping on ZnO Tetrapods with Bismuth and Tin Oxides 
    POSTICA, Vasile; GRÖTTRUP, Jorit; ADELUNG, Rainer; LUPAN, Oleg; MISHRA, Abhishek Kumar; LEEUW, Nora H. de; ABABII, Nicolai; CARREIRA, José F. C.; RODRIGUES, Joana; SEDRINE, Nebiha Ben; CORREIA, Maria Rosário; MONTEIRO, Teresa; SONTEA, Victor; MISHRA, Yogendra Kumar (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2017)
    Hybrid metal oxide nano- and microstructures exhibit novel properties, which make them promising candidates for a wide range of applications, including gas sensing. In this work, the characteristics of the hybrid ZnOBi2O3 ...
  • Nanomechanics of individual aerographite tetrapods 
    MEIJA, Raimonds; SIGNETTI, Stefano; SCHUCHARDT, Arnim; MEURISCH, Kerstin; SMAZNA, Daria; MECKLENBURG, Matthias; SCHULTE, Karl; ERTS, Donats; LUPAN, Oleg; FIEDLER, Bodo; MISHRA, Yogendra Kumar; ADELUNG, Rainer; PUGNO, Nicola M. (Springer Nature Limited, 2017)
    Carbon-based three-dimensional aerographite networks, built from interconnected hollow tubular tetrapods of multilayer graphene, are ultra-lightweight materials recently discovered and ideal for advanced multifunctional ...
  • Porous ceramics based on hybrid inorganic tetrapodal networks for efficient photocatalysis and water purification 
    GRÖTTRUP, Jorit; SCHÜTT, Fabian; SMAZNA, Daria; LUPAN, Oleg; ADELUNG, Rainer; MISHRA, Yogendra Kumar (ELSEVIER, 2017)
    The present work demonstrates a very simple and unique strategy for efficient photocatalysis using ZnO ceramic nano- and microtetrapods synthesized by a flame transport synthesis approach. Due to their three-dimensional ...
  • Refractive index dispersion deduced from lasing modes in ZnO microtetrapods 
    URSAKI, V. V.; ZALAMAI, V. V.; TIGINYANU, I. M.; BURLACU, A.; RUSU, E. V.; KLINGSHIRN, C. (American Institute of Physics, 2009)
    High optical quality, well end leg faceted ZnO microtetrapods sustaining lasing modes with quality factors of 2500–3000 have been grown by carbothermal chemical vapor deposition. It is shown that lasing is due to longitudinal ...
  • Sacrificial template synthesis and properties of 3D hollow-silicon nano- and microstructures 
    HÖLKEN, Iris; NEUBÜSER, Gero; POSTICA, Vasile; BUMKE, Lars; LUPAN, Oleg; BAUM, Martina; MISHRA, Yogendra Kumar; KIENLE, Lorenz; ADELUNG, Rainer (The Royal Society of Chemistry, 2016)
    Novel three-dimensional (3D) hollow aero-silicon nano- and microstructures, namely, Si-tetrapods (Si-T) and Si-spheres (Si-S) were synthesized by a sacrificial template approach for the first time. The new Si-T and Si-S ...
  • Schottky Diode Based on a Single Carbon–Nanotube–ZnO Hybrid Tetrapod for Selective Sensing Applications 
    POSTICA, Vasile; SCHÜTT, Fabian; ADELUNG, Rainer; LUPAN, Oleg (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2017)
    In this work, a general strategy to change the selectivity of individual ZnO tetrapod (ZnO-T)-Schottky diode-based devices by hybridization with carbon nanotubes (CNT) is presented. A microscale Schottky diode based on ...
  • Self-organized and self-propelled aero-GaN with dual hydrophilic-hydrophobic behaviour 
    TIGINYANU, Ion; BRANISTE, Tudor; SMAZNA, Daria; DENG, Mao; SCHÜTT, Fabian; SCHUCHARDT, Arnim; STEVENS-KALCEFF, Marion A.; RAEVSCHI, Simion; SCHÜRMANN, Ulrich; KIENLE, Lorenz; PUGNO, Nicola M.; MISHRA, Yogendra Kumar; ADELUNG, Rainer (ELSEVIER, 2019)
    Nature utilizes hydrophilic-hydrophobic biomolecular entities to perform self-organized structural and functional tasks, including the formation of cellular compartments and motion, separation of chemicals or self-healing ...
  • Single and Networked ZnO–CNT Hybrid Tetrapods for Selective Room-Temperature High-Performance Ammonia Sensors 
    SCHÜTT, Fabian; POSTICA, Vasile; ADELUNG, Rainer; LUPAN, Oleg (American Chemical Society, 2017)
    Highly porous hybrid materials with unique high-performance properties have attracted great interest from the scientific community, especially in the field of gas-sensing applications. In this work, tetrapodal-ZnO (ZnO-T) ...
  • A single ZnO tetrapod-based sensor 
    LUPAN, Oleg; CHOW, Lee; CHAI, Guangyu (ELSEVIER, 2009)
    Transferable ZnO tetrapods were grown by an aqueous solution method. An individual ZnO tetrapod-based sensor was fabricated by in situ lift-out technique and its ultraviolet (UV) and gas sensing properties were investigated. ...
  • Three-dimensional flexible ceramics based on interconnected network of highly porous pure and metal alloyed ZnO tetrapods 
    GRÖTTRUP, Jorit; PAULOWICZ, Ingo; SCHUCHARDT, Arnim; KAIDAS, Victor; KAPS, Sören; LUPAN, Oleg; ADELUNG, Rainer; MISHRA, Yogendra Kumar (ELSEVIER, 2016)
    Flexible and porous three-dimensional (3-D) ceramics made from inorganic metal oxide nano- and micro-structures are going to be material candidates for future nanotechnologies. In the present work an attempt in this direction ...
  • 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) ...
  • Zinc oxide nanotetrapods with four different arm morphologies for versatile nanosensors 
    PAULOWICZ, Ingo; POSTICA, Vasile; LUPAN, Oleg; WOLFF, Niklas; SHREE, Sindu; COJOCARU, Ala; DENG, Mao; MISHRA, Yogendra Kumar; TIGINYANU, Ion; KIENLE, Lorenz; ADELUNG, Rainer (ELSEVIER, 2018)
    The structural morphology of metal oxide nano- and microstructures plays a crucial role in the performances of sensors and especially of nanosensors. Here, a simple approach on the synthesis of three-dimensional (3D) highly ...
  • 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 ...

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