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Browsing Articole din publicaţii internaţionale by Author "TIGINYANU, Ion"

Browsing Articole din publicaţii internaţionale by Author "TIGINYANU, Ion"

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  • Self-Propelled Aero-GaN Based Liquid Marbles Exhibiting Pulsed Rotation on the Water Surface 
    BRANISTE, Tudor; CIOBANU, Vladimir; SCHÜTT, Fabian; MIMURA, Hidenori; RAEVSCHI, Simion; ADELUNG, Rainer; PUGNO, Nicola M.; TIGINYANU, Ion (MDPI, 2021)
    We report on self-propelled rotating liquid marbles fabricated using droplets of alcoholic solution encapsulated in hollow microtetrapods of GaN with hydrophilic free ends of their arms and hydrophobic lateral walls. Apart ...
  • Sensing up to 40atm Using Pressure-Sensitive Aero-GaN 
    DRAGOMAN, Mircea; CIOBANU, Vladimir; SHREE, Sindu; DRAGOMAN, Daniela; BRANISTE, Tudor; RAEVSCHI, Simion; DINESCU, Adrian; SARUA, Andrei; MISHRA, Yogendra K.; PUGNO, Nicola; ADELUNG, Rainer; TIGINYANU, Ion (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2019)
    This work reports on the fabrication and characterization of a robust pressure sensor based on aero-GaN. The ultraporous aeromaterial consists of GaN interconnected hollow micro-tetrapods with the wall thickness of about ...
  • Silver-doped zinc oxide single nanowire multifunctional nanosensor with a significant enhancement in response 
    LUPAN, Oleg; CRETU, Vasilii; POSTICA, Vasile; AHMADI, Mahdi; CUENYA, Beatriz Roldan; CHOW, Lee; TIGINYANU, Ion; VIANA, Bruno; PAUPORTÉ, Thierry; ADELUNG, Rainer (ELSEVIER, 2016)
    Enhanced performances were obtained for nanosensors based on a single nanowire of silver-doped zinc oxide (ZnO:Ag). Arrays of crystalline ZnO:Ag nanowires were synthesized by electrodeposition on F-doped tin oxide coated ...
  • 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 ...
  • Size-dependent UV and gas sensing response of individual FE2O3-ZNO:FE micro- and nanowire based devices 
    GRÖTTRUP, Jorit; POSTICA, Vasile; ABABII, Nicolai; LUPAN, Oleg; ZAMPONI, Christiane; MEYNERS, Dirk; MISHRA, Yogendra K.; SONTEA, Victor; TIGINYANU, Ion; ADELUNG, Rainer (ELSEVIER, 2017)
    In this work, the UV and gas sensing properties of single Fe-doped and Fe2O3-functionalized ZnO micro- and nanowires are reported.
  • A SnS2-based photomemristor driven by sun 
    DRAGOMAN, Mircea; BATIRI, Mihail; DINESCU, Adrian; CIOBANU, Vladimir; RUSU, Emil; DRAGOMAN, Daniela; TIGINYANU, Ion (AIP Publishing LLC, 2018)
    We demonstrate experimentally that a sample of a SnS2 layered semiconductor compound with the area of 1 cm2 and the thickness of 100 μm, contacted laterally by silver electrodes with the area of 1 mm2, acts naturally as a ...
  • Special issue on electrochemical processing of semiconductor materials 
    FÖLL, Helmut; GERNGROSS, Mark-Daniel; SAILOR, Michael J.; TIGINYANU, Ion (IOP Publishing, 2015)
    The first part of this issue focuses on the formation of porous semiconductor structures by diverse processing techniques: electrochemical etching, metal-assisted etching, and stain etching. The second part covers the ...
  • Strong light scattering and broadband (UV to IR) photoabsorption in stretchable 3D hybrid architectures based on aerographite decorated by ZnO nanocrystallites 
    TIGINYANU, Ion; GHIMPU, Lidia; GRÖTTRUP, Jorit; POSTOLACHE, Vitalie; MECKLENBURG, Matthias; STEVENS-KALCEFF, Marion A.; URSAKI, Veaceslav; PAYAMI, Nader; FEIDENHANSL, Robert; SCHULTE, Karl; ADELUNG, Rainer; MISHRA, Yogendra Kumar (Springer Nature, 2016)
    In present work, the nano- and microscale tetrapods from zinc oxide were integrated on the surface of Aerographite material (as backbone) in carbon-metal oxide hybrid hierarchical network via a simple and single step ...
  • Structure and morphology of nanoporous zno and dark current-Voltage characteristics of the glass/(TCO)/zno/poly[2,7-(9,9-dioctylfluorene)-alt-(5,5'-bithiophene)/ag structure 
    GHIMPU, Lidia; POTLOG, Tamara; RESMERITA, Ana-Maria; TIGINYANU, Ion; FARCAS, Aurica (Wiley Periodicals Inc., 2015)
    The hybrid organic-inorganic structure based on glass/(TCO)/nanoporous ZnO/poly[2,7-(9,9-dioctylfluorene)-alt-(5,5′-bithiophene)]/Ag that was prepared by physical deposition has been investigated. The structure of the ...
  • 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 ...
  • Targeting Endothelial Cells with Multifunctional GaN/Fe Nanoparticles 
    BRANISTE, Tudor; TIGINYANU, Ion; HORVATH, Tibor; RAEVSCHI, Simion; ANDRÉE, Birgit; CEBOTARI, Serghei; BOYLE, Erin C.; HAVERICH, Axel; HILFIKER, Andres (Springer Nature Switzerland, 2017)
    In this paper, we report on the interaction of multifunctional nanoparticles with living endothelial cells. The nanoparticles were synthesized using direct growth of gallium nitride on zinc oxide nanoparticles alloyed with ...
  • Template Assisted Formation of Metal Nanotubes 
    TIGINYANU, Ion; URSAKI, Veaceslav; MONAICO, Eduard (Springer International Publishing Switzerland, 2016)
    This chapter provides a review of methods for the production of metal nanotubes and their applications. The importance of nanotemplated growth of nanowires and nanotubes for nanofabrication, and the advantages of nanotubes ...
  • Terahertz shielding properties of aero-GaN 
    BRANISTE, Tudor; ZHUKOV, Sergey; DRAGOMAN, Mircea; ALYABYEVA, Liudmila; CIOBANU, Vladimir; ALDRIGO, Martino; DRAGOMAN, Daniela; IORDANESCU, Sergiu; SHREE, Sindu; RAEVSCHI, Simion; ADELUNG, Rainer; GORSHUNOV, Boris; TIGINYANU, Ion (IOP Publishing, 2019)
    The electrodynamic properties of the first aero-material based on compound semiconductor, namely of Aero-GaN, in the terahertz frequency region are experimentally investigated. Spectra of complex dielectric permittivity, ...
  • Thermal analysis of the composition of gallium and sulfur oxides obtained by thermal oxidation of gallium (III) sulfide 
    SPRINCEAN, Veaceslav; CARAMAN, Iuliana; UNTILA, Dumitru; VATAVU, Elmira; EVTODIEV, Igor; TIGINYANU, Ion (Academica Greifswald, 2017)
    Oxides of both Ga and In elements (Ga2O3, In2O3) are wide bandgap materials and have molecular gas adsorption properties, such as CO and CO2. They are materials with semiconductor properties, which doping with chemical ...
  • 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 ceramic networks built from quasi-one-dimensional (Q1D) structures are important candidates for various applications of nanostructures in real-world technologies. A flame transport synthesis approach is developed ...
  • Two-Dimensional Metallo-Semiconductor Networks for Electronic and Photonic Applications 
    TIGINYANU, Ion; MONAICO, Eduard; URSAKI, Veaceslav (The Electrochemical Society, 2019)
    Two-dimensional metallo-semiconductor networks have been fabricated by pulsed electrochemical deposition of Pt inside porous GaP membranes with parallel pores possessing diameters in the micrometer and sub-micrometer ranges. ...
  • Ultra-lightweight pressure sensor based on graphene aerogel decorated with piezoelectric nanocrystalline films 
    DRAGOMAN, Mircea; GHIMPU, Lidia; OBREJA, Cosmin; DINESCU, Adrian; PLESCO, Irina; DRAGOMAN, Daniela; BRANISTE, Tudor; TIGINYANU, Ion (IOP Publishing, 2016)
    In this paper, we report on a pressure sensor based on graphene aerogel functionalized with SnO2 or GaN thin films deposited by magnetron sputtering. Decoration by nanocrystalline SnO2 or GaN was found to enhance the ...
  • Ultra-Thin GaN Membranes Fabricated by Using Surface Charge Lithography 
    TIGINYANU, Ion; POPA, Veaceslav; STEVENS-KALCEFF, Marion A. (The Electrochemical Society, 2019)
    We report on fabrication of ultra-thin GaN membranes of nanometer scale thickness, by using the concept of surface charge lithography based on low-energy ion treatment of the sample surface with subsequent photoelectrochemical ...
  • Ultra-thin semiconductor membrane nanotechnology based on surface charge lithography 
    TIGINYANU, Ion; POPA, Veaceslav; STEVENS-KALCEFF, Marion A. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2011)
    We show that by subjecting GaN epilayers on sapphire substrates to low-energy/low-dose ion treatment with subsequent photoelectrochemical etching it is possible to fabricate ultra-thin GaN membranes in the form of nano-roof ...
  • 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 ...

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