Browsing by Subject "nanowires"

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  • Nanowires of Silicon Carbide and 3D SiC/C Nanocomposites With Inverse Opal Structure 
    EMELCHENKO, G. A.; ZHOKHOV, A. A.; MASALOV, V. M.; KUDRENKO, E. A.; TERESHENKO, A. N.; STEINMAN, E. A.; KHODOS, I. I.; ZINENKO, V. I.; AGAFONOV, Yu. A. (Technical University of Moldova, 2011)
    Synthesis, morphology, structural and optical characteristics of SiC NWs and SiC/C nanocomposites with an inverse opal lattice have been investigated. The samples were prepared by carbothermal reduction of silica (SiC NWs) ...
  • Non-lithographic nanotechnologies for 2D and 3D nanofabrication 
    TIGINYANU, I. M. (Technical University of Moldova, 2012)
    In this paper we present a review of technological approaches for 2D and 3D nanofabrication of semiconductor compounds by using radiation treatment and electrochemistry. Novel spatial nanoarchitectures based on III-V and ...
  • Optical properties of ZnO nanowire arrays electrodeposited on n- and p-type Si(111): Effects of thermal annealing 
    LUPAN, O.; PAUPORTÉ, Th.; TIGINYANU, I. M.; URSAKI, V. V.; HEINRICH, H.; CHOW, L. (ELSEVIER, 2011)
    Electrodeposition is a low temperature and low cost growth method of high quality nanostructured active materials for optoelectronic devices. We report the electrochemical preparation of ZnO nanorod/nanowire arrays on ...
  • PdO/PdO2 mixed oxides nanoparticles-functionalized ZnO nanowires 
    POSTICA, Vasile; PAUPORTÉ, Thierry; TROFIM, Viorel; ABABII, Nicolai; LUPAN, Oleg (Romanian Inventors Forum, 2019)
    The invention relates to the technology of the metal oxides, in particular to the electrochemical one-step synthesis of Pd and PdO/PdO2 mixed oxides nanoparticles-functionalized ZnO nanowires at temperature of 90 ºC.
  • Peculiarities of phonon drag effect in bismuth wires 
    KONOPKO, L. A.; NIKOLAEVA, A. A.; PARA, Gh. I.; BOTNARI, O. V. (Institutul de Fizică Aplicată, 2012)
    Low dimensional materials, such as nanowires, have attracted substantial attention in theoretical and experimental studies. In work predicts an enhancement of the thermoelectric power for nanowires.
  • Peculiarities of Seebeck Effect in Strained Bismuth Nanowires 
    CONDREA, E.; NICORICI, A.; GILEWSKI, A. (Tehnica UTM, 2015)
    The results on the effect of strain on the electrical resistance and thermopower of Pyrex-coated Bi nanowires were presented. The properties of Bi nanowires are examined in the light of a strain induced electronic topological ...
  • Perspectives of Single Cast Nanowires Technology 
    IOISHER, Anatolii; BADINTER, Efim; LEPORDA, Nicolae; POSTOLACHE, Vitalie; MONAICO, Eduard; TIGHINYANU, Ion (Technical University of Moldova, 2011)
    The paper is dedicated to production potential of glass-coated cast nanowire with metal-, semimetal- and semiconductor-based cores by means of Taylor-Ulitovsky method. Criteria of melted core-formative material penetration ...
  • Phonon engineered suppression of lattice thermal conductivity in segmented and cross-section modulated silicon nanowires 
    NIKA, Denis (Technical University of Moldova, 2012)
    The strong suppression of lattice (phonon) thermal conductivity in segmented nanowires, consisting of acoustically-mismatched materials, as well as in cross-section modulated Si nanowires is theoretically demonstrated using ...
  • Photoluminescence of ZnTe nanowires prepared by electrochemical etching of bulk ZnTe 
    MONAICO, E.; COSEAC, V.; URSAKI, V.V.; SYRBU, N.N.; TIGINYANU, I.M. (Technical University of Moldova, 2009)
    We demonstrate the preparation of ZnTe nanowires with the diameter of 50 nm from bulk p-type ZnTe by means of electrochemical treatment in a pulse regime. The nanowires demonstrate photoluminescence characteristics identical ...
  • Porous semiconductor compounds 
    MONAICO, Eduard; TIGINYANU, Ion; URSAKI, Veaceslav (IOP Publishing, 2020)
    In this review paper, we present a comparative analysis of the electrochemical dissolution of III–V (InP, GaAs, GaN), II–VI (ZnSe, CdSe) and SiC semiconductor compounds. The resulting morphologies are discussed, including ...
  • Preparation and characterization of Ga2O3 and GaN nanoparticles 
    RUSU, E.; URSAKI, V.; RAEVSCHI, S.; VLAZAN, P. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2015)
    In this communication, we present results on preparation of GaN nanoparticles by conversion of Ga2O3 nanocrystals in a flow of NH3 and H2. The monoclinic Ga2O3 nanoparticles have been prepared by hydrothermal method with ...
  • Procedeu de funcţionalizare a nanofirelor de ZnO cu nanoparticule de Pd 
    POSTICA, Vasile; PAUPORTÈ, Thierry; TROFIM, Viorel; ABABII, Nicolai; LUPAN, Oleg (Agenţia de Stat pentru Proprietatea Intelectuală a Republicii Moldova, 2020-11-30)
    Invenţia se referă la tehnologia semiconductorilor oxizi, în special la tehnologia de obţinere a nanofirelor de ZnO funcţionalizate cu nanoparticule de paladiu (Pd) şi poate fi utilizată la fabricarea senzorilor de gaze ...
  • Procedeu de obţinere a nanostructurilor magnetice 
    MONAICO, Eduard; URSACHI, Veaceslav; MORARI, Vadim; TIGHINEANU Ion (Agenţia de Stat pentru Proprietatea Intelectuală, 2023-09-30)
    Invenţia se referă la tehnologia de producere a materialelor nanostructurate, în special la procedee de obţinere a nanostructurilor magnetice, care pot fi folosite în microelectronică, spintronică sau păstrarea informației. ...
  • Properties of a single SnO2:Zn2SnO4 – Functionalized nanowire based nanosensor 
    LUPAN, Oleg; WOLFF, Niklas; POSTICA, Vasile; BRANISTE, Tudor; PAULOWICZ, Ingo; HRKAC, Viktor; MISHRA, Yogendra Kumar; TIGINYANU, Ion; KIENLE, Lorenz; ADELUNG, Rainer (ELSEVIER, 2018)
    Tin oxide nanowires (SnO2 NWs) exhibit large potential for applications in sensor and detector technology. Using a flame transport synthesis method, high-quality single crystalline SnO2 nanowires (NWs) with Zn2SnO4 dots ...
  • Properties of MoO3 Nanostructures Grown Via Thermal Oxidation 
    TROFIM, Viorel; CREŢU, Vasilii; LUPAN, Oleg; STAMOV, Ivan; SYRBU, Nicolae; ZALAMAI, Victor; CHOW, Lee (Technical University of Moldova, 2013)
    Metal oxides such as molybdenum oxide (MoO3) have been studied intensively as sensors and electrochromic systems during of the last decade. MoO3 nanowires present new properties at nanometer dimensions. Its structural, ...
  • Quantum Interference and Surface States Effects in Topological Insulator Bi0.83Sb0.17 Nanowires 
    KONOPKO, Leonid; NIKOLAEVA, Albina; HUBER, Tito (Technical University of Moldova, 2017)
    We investigate the transport properties of topological insulator (TI) Bi0.83Sb0.17 nanowires. Single-crystal nanowire samples with diameters ranging from 75 nm to 1.1 μm are prepared using high frequency liquid phase casting ...
  • Quantum interference of surface states in nanowires of topological insulator BI0.83SB0.17 
    KONOPKO, L. A.; NIKOLAEVA, A. A.; HUBER, T. E.; ROGACKI, K. (Tehnica UTM, 2018)
    We have investigated the galvanomagnetic properties of topological insulator based on single-crystal Bi0.83Sb0.17 nanowires. The single-crystal nanowire samples in the diameter range 75 nm – 1.1 μm were prepared by the ...
  • Quantum Oscillations of Conductivity in Bismuth Wires 
    CONDREA, Elena (Technical University of Moldova, 2011)
    Measurements of the resistance of bismuth nanowires with several diameters and different quality reveal oscillations on the dependence of resistance under uniaxial strain at T = 4.2 K. Amplitude of oscillations is significant ...
  • Quantum size effect in semimetal bismuth antimony wires and films 
    NIKOLAEVA, Albina; KONOPKO, Leonid; GRABOV, Vladimir; DEMIDOV, Evghenii; KABLUKOVA, Natalia; KOMAROV, Vladimir; POPOV, Ivan (Tehnica UTM, 2014)
    — We present the experimental results of an investigation of the electron transport of semimetal single- crystal Bi1-xSbx films and wires in temperature range 4.2-300 K. Bi-3at.%Sb films were prepared by the vacuum discrete ...
  • A rapid hydrothermal synthesis of rutile SnO2 nanowires 
    CRETU, V.; POSTICA, V.; MISHRA, A. K.; HOPPE, M.; TIGINYANU, I.; MISHRA, Y. K.; CHOW, L.; DE LEEUW, Nora H.; ADELUNG, R.; LUPAN, O. (The Royal Society of Chemistry, 2016)
    Synthesis, characterization and DFT studies of zincdoped copper oxide nanocrystals for gas sensing applications Due to their unique properties, p-type copper oxide nanostructures have demonstrated promising potential for ...

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