Browsing by Subject "scanning electron microscopy"

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  • Aero-ZnS prepared by physical vapor transport on three-dimensional networks of sacrificial ZnO microtetrapods 
    URSAKI, Veaceslav; BRANISTE, Tudor; ZALAMAI, Victor; RUSU, Emil; CIOBANU, Vladimir; MORARI, Vadim; PODGORNII, Daniel; RICCI, Pier Carlo; ADELUNG, Rainer; TIGINYANU, Ion (Beilstein Institut, 2024)
    Aeromaterials represent a class of increasingly attractive materials for various applications. Among them, aero-ZnS has been produced by hydride vapor phase epitaxy on sacrificial ZnO templates consisting of networks of ...
  • Cathodoluminescence and computer graphics in materials science 
    NAZAROV, M. V.; NAZAROVA, T. A. (John Wiley & Sons, Inc., 1994)
    The combination of cathodoluminescence (CL) in scanning electron microscopy (SEM) with computer graphics is proposed for studying semiconductors and dielectric materials. Spatial distribution of several types of defects ...
  • Characterization of Films Prepared by Aerosol Spray Deposition in the (MgO)x(In2O3)(1−x) System 
    MORARI, Vadim; RUSU, Daniela; RUSU, Emil V.; URSAKI, Veaceslav V.; TIGINYANU, Ion M. (Springer Nature Switzerland, 2023)
    In this paper nanostructured thin films with thickness of 150 nm have been prepared by aerosol deposition method on p-Si in the system (MgO)x(In2O3)(1−x) with the composition range x = 0.2, 0.4 and 0.6, using indium chloride ...
  • Controlling Hydrophobic/Hydrophilic Properties of ZnO Microtetrapods Structures by Means of Thermal Treatment 
    CIOBANU, Vladimir; URSAKI, Veaceslav V.; REIMERS, Armin; MIHAI, Geanina; ZALAMAI, Victor V.; MONAICO, Eduard V.; ADELUNG, Rainer; ENACHESCU, Marius; TIGINYANU, Ion M. (Springer Nature Switzerland, 2023)
    We report on possibilities to convert, by means of thermal treatment, the wettability properties of networks consisting of ZnO microtetrapods from hydrophobic to super-hydrophilic. The ZnO microtetrapods were produced by ...
  • Crystallinity and optical properties of β-Ga2O3/Ga2S3 layered structure obtained by thermal annealing of Ga2S3 semiconductor 
    SPRINCEAN, Veaceslav; LUPAN, Oleg; CARAMAN, Iuliana; UNTILA, Dumitru; POSTICA, Vasile; COJOCARU, Ala; GAPEEVA, Anna; PALACHI, Leonid; ADELING, Rainer; TIGINYANU, Ion; CARAMAN, Mihail (ELSEVIER, 2021)
    In this work, the β-Ga2O3 nanostructures were obtained by thermal annealing in air of β-Ga2S3 single crystals at relatively high temperatures of 970 K, 1070 K and 1170 K for 6 h. The results show that the properties of ...
  • Design of titania nanotube structures by focused laser beam direct writing 
    ENACHI, Mihai; STEVENS-KALCEFF, Marion A.; SARUA, Andrei; URSAKI, Veaceslav; TIGINYANU, Ion (AIP Publishing LLC, 2013)
    In this work, we report on electrochemical fabrication of titania films consisting of nanotubes (NTs) and their treatment by focused laser beam. The results of sample characterization by optical and scanning electron ...
  • Doped Oxide Nanoarchitectures for Device Applications 
    LUPAN, O.; CHOW, L.; RAILEAN, S.; SONTEA, V.; POCAZNOI, I. (Institute of Electronic Engineering and Nanotechnologies “D.GHITU” ASM, 2011)
    We present an experimental approach to study magnesium and cadmium-alloyed zinc oxide nanorods and their integration in wavelength-tunable light-emitting diodes (LEDs) Doped zinc oxide were deposited on p-GaN substrates ...
  • Gold Electroplating as a Tool for Assessing the Conductivity of InP Nanostructures Fabricated by Anodic Etching of Crystalline Substrates 
    MONAICO, E. V.; TIGINYANU, I. M.; URSAKI, V. V.; NIELSCH, K.; BALAN, D.; PRODANA, M.; ENACHESCU, M. (The Electrochemical Society, 2017)
    Electroplating is shown to represent a simple and effective tool for assessing the conductivity of InP nanostructures fabricated by electrochemical etching of InP wafers. A mixture of nanowalls, nanowires and nanobelts was ...
  • Impact of Rapid Photothermal Processing on Properties of ZnO Nanostructures for Solar Cell Applications 
    SHISHIYANU, S.; SINGH, R.; SHISHIYANU, T.; LUPAN, O. (Institute of Electrical and Electronics Engineerings, IEEE, 2006)
    The nanotechnology with chemical deposition (CD) and rapid photothermal processing (RPP) of nanostructured ZnO thin films for solar cell applications was elaborated. The influence of growth processes and the impact of RPP ...
  • Investigation of tin oxide nanobelts/nanoribbons prepared by chemical deposition technology 
    LUPAN, O.; CHOW, L.; CHAI, G.; SCHULTE, A.; PARK, S.; HEINRICH, H.; SONTEA, V.; TROFIM, V.; RAILEAN, S. (Institute of Electrical and Electronics Engineerings, IEEE, 2008)
    A facile aqueous solution process to fabricate tin oxide nanoarchitectures was successfully developed. The influence of precursors on the morphology of SnO2 is studied. Tin oxide nanobelts/nanoribbons were characterized ...
  • 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 ...
  • Morphological and Sensing Properties of the ZnO-Zn2SnO4 Ternary Phase Nanorod Arrays 
    LITRA, Dinu; LUPAN, Cristian; TJARDTS, Tim; QIU, Haoyi; ZADOROJNEAC, Tudor; MALAI, Dominic; SEREACOV, Alexandr; AKTAS, Cenk; SIEBERT, Leonard; LUPAN, Oleg (Springer Nature Switzerland, 2023)
    In this paper, the morphological and sensing properties of the Sn-doped ZnO-Zn2SnO4 nanorods obtained by the hydrothermal method are presented. The developed methodology exhibits high levels of efficiency and cost-effectiveness, ...
  • Photoluminescence mechanisms of Tb3+ - doped porous GaP 
    ELHOUICHET, H.; OUESLATI, M.; LORRAIN, N.; LANGA, S.; TIGINYANU, I. M.; FÖLL, H. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2005)
    Porous GaP (por-GaP) samples are doped with terbium ions (Tb3+) by simple impregnation followed by high-temperature annealing. From scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) analysis, we show ...
  • Rapid synthesis and characterization of micro and nanostructures of molybdenum trioxide 
    TROFIM, V.; CRETU, V.; LUPAN, O.; ENACHI, M.; MONAICO, E.; SYRBU, N.; TIGINYANU, I.; CHOW, L. (Institute of Electrical and Electronics Engineerings, IEEE, 2013)
    Micro - and nanostructures of molybdenum trioxide (MoO3) have been investigated intensively for sensorial and electrochromic systems. MoO3 nanostructures were grown by a rapid thermal oxidation of molybdenum at 1000 °C in ...
  • Responsivity and detectivity of Zn0.8Mg0.2O/p-Si prepared by spin coating and aerosol deposition method 
    MORARI, V.; RUSU, E.; URSAKI, V.; TIGINYANU, I. M. (Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu", 2021)
    In this paper, we present data concerning responsivity and detectivity of Zn0.8Mg0.2O/p-Si photodetectors based on thin films prepared by spin-coating and aerosol deposition methods from 0.35 M aqueous solution using Zn ...
  • Selenium uptake and assessment of the biochemical changes in Arthrospira (Spirulina) platensis biomass during the synthesis of selenium nanoparticles 
    ZINICOVSCAIA, I.; CHIRIAC, T.; CEPOI, L.; RUDI, L.; CULICOV, O.; FRONTASYEVA, M.; RUDIC, V. (NRC Research Press, 2017)
    The process of selenium uptake by biomass of the cyanobacterium Arthrospira (Spirulina) platensis was investigated by neutron activation analysis at different selenium concentrations in solution and at different contact ...
  • Thin films of copper oxide nanostructured via rapid thermal processing 
    CRETU, Vasilii; LUPAN, Cristian; MANCIU, Nicolae; ABABII, Nicolai; POSTICA, Vasile; RAILEAN, Serghei; GALSTYAN, Vardan; CHOW, Lee; PAUPORTÉ, Thierry (Technical University of Moldova, 2021)
    The temperature dependent gas sensing properties of nanostructured copper oxide nanolayers obtained by the method of chemical synthesis from solutions (SCS) and exposed to postgrowth rapid thermal processing (RTP) in air ...
  • An ultrasound-assisted sol-gel method for the synthesis of nano titanium dioxide 
    ABRAMOVA, Anna; ABRAMOV, Vladimir; GUTSUL, Tatiana; MÎRZAC, Alexandra; SIDORENCO, Anatoly (Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu" al AŞM, 2016)
    An ultrasound-assisted sol-gel method is used to prepare titanium dioxide (TiO2)An ultrasound-assisted sol nanoparticles. The resulting nanoparticles are characterized by scanning electron microscopy (SEM) and FTIR ...
  • ZnO Micro/Nano Structures by MOCVD and Vapour Transport Technique: Growth and Characterization 
    RUSU, E.; BURLACU, A.; URSAKI, V.; STRATAN, G.; PURICA, M.; BUDIANU, E.; MONAICO, E. (IEEE, 2007)
    ZnO micro/nano structures were grown by metalo-organic chemical vapour deposition (MOCVD) and chemical vapour transport and condensation deposition process on Si and glass substrates. Using MOCVD method were grown uniform ...
  • ZnO Microtetrapods Covered by Au Nanodots as a Platform for the Preparation of Complex Micro-nano-structures 
    MONAICO, Eduard V.; REIMERS, Armin; CIOBANU, Vladimir; ZALAMAI, Victor V.; URSAKI, Veaceslav V.; ADELUNG, Rainer; TIGINYANU, Ion M. (Springer Nature Switzerland, 2023)
    We propose to use hybrid networks of ZnO microtetrapods produced by flame transport synthesis and Au nanodots deposited by pulsed electroplating, for the preparation of more complex 3D micro-nano-structures via Au ...

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