Browsing by Subject "nanowires"

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  • A rapid hydrothermal synthesis of rutile SnO2 nanowires 
    LUPAN, O.; CHOW, L.; CHAI, G.; SCHULTE, A.; PARK, S.; HEINRICH, H. (ELSEVIER, 2009)
    Tin oxide (SnO2) nanowires with rutile structure have been synthesized by a facile hydrothermal method at 98°C. The morphologies and structural properties of the as-grown nanowires/nanoneedles were characterized by scanning ...
  • 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 ...
  • Room temperature gas nanosensors based on individual and multiple networked Au-modified ZnO nanowires 
    LUPAN, Oleg; POSTICA, Vasile; PAUPORTÉ, Thierry; VIANA, Bruno; TERASA, Maik-Ivo; ADELUNG, Rainer (ELSEVIER, 2019)
    In this work, we investigated performances of individual and multiple networked Au nanoparticles (NPs)-functionalized ZnO nanowires (NWs) integrated into nanosensor devices using dual beam focused ion beam/scanning electron ...
  • Selective hydrogen gas nanosensor using individual ZnO nanowire with fast response at room temperature 
    LUPAN, O.; URSAKI, V. V.; CHAI, G.; CHOW, L.; EMELCHENKO, G. A.; TIGINYANU, I. M.; GRUZINTSEV, A. N.; REDKIN, A. N. (ELSEVIER, 2010)
    In this work, we report on a single ZnO nanowire-based nanoscale sensor fabricated using focused ion beam (FIB/SEM) instrument. We studied the diameter dependence of the gas response and selectivity of ZnO nanowires (NWs) ...
  • Semiconducting Oxide - Based Micro- and Nano-Sensors for Environmental and Biomedical Monitoring 
    MAGARIU, Nicolae; ABABII, Nicolai; ZADOROJNEAC, Tudor; KRÜGER, Helge; BODDULURI, Mani Teja; PAUPORTÉ, Thierry; ADELUNG, Rainer; HANSEN, Sandra; LUPAN, Oleg (IEEE, 2021)
    Nanosensors and microsensors are important for environmental and biomedical monitoring due to their extraordinary properties. In this work sensor devices are fabricated for the detection of H 2 gas and ethanol vapors. These ...
  • Semiconductor – semimetal transition induced by anisotropic deformation in bi quantum wires 
    PARA, Gh. I. (Institutul de Fizică Aplicată, 2010)
    In this paper the temperature dependences of resistance R(T) in bismuth nanowires in the field of the transition semimetal-semiconductor which predicted in paper [1] at diameters of wires d <100 nm in the range of temperatures ...
  • Semimetal-semiconductor transition in semimetal Bi-Sn and Bi1-xSbx wires induced by deformation and magnetic field 
    KOBYLIANSKAYA, A. K.; PAPA, Gh. P.; POPOV, I. A.; KOROMYSLICHENKO, T. P. (Institutul de Fizică Aplicată, 2018)
    We report here the features of semimetal- semiconductor transition (SMSCT) in Bi-2at%Sb and Bi-0.02at%Sn nanowires, induced by the size quantization effect, magnetic field and strong (till 2%) elastic deformation in area ...
  • Semimetal-Semiconductor Transitions in Semimetal Bismuth-Antimony Nanowires Induced by Size Quantization, Strain, and Magnetic Field 
    NIKOLAEVA, Albina A.; KONOPKO, Leonid A.; HUBER, Tito E.; BODIUL, Pavel P.; POPOV, Ivan A.; MOLOSHNIK, Eugen F. (Springer Nature Switzerland, 2011)
    In this work, we study glass-coated single-crystal Bi98Sb02 wires obtained by liquid phase casting. Semimetal Bi98Sb02 nanowires exhibited a “semiconductor” behavior of the temperature dependence R(T) for wire diameters ...
  • Sensing performances of pure and hybridized carbon nanotubes-ZnO nanowire networks: A detailed study 
    LUPAN, Oleg; SCHÜTT, Fabian; POSTICA, Vasile; SMAZNA, Daria; MISHRA, Yogendra Kumar; ADELUNG, Rainer (Springer Nature Limited, 2017)
    In this work, the influence of carbon nanotube (CNT) hybridization on ultraviolet (UV) and gas sensing properties of individual and networked ZnO nanowires (NWs) is investigated in detail. The CNT concentration was varied ...
  • Sensor Array on Nanowires CuO/Cu2O/Cu Heterojunction Net 
    ABABII, Nicolai; SIEBERT, Leonard; LUPAN, Oleg; CREŢU, Vasilii; ADELUNG, Rainer (Academia de Ştiinţe a Moldovei, 2019)
    In this work, for the first time, acetone sensors based on nanowire CuO/Cu2O/Cu heterojunctions have been designed, obtained and investigated using the single-stage 3D printing method. By thermal oxidation of Cu microparticles ...
  • Senzor de etanol pe bază de oxid de cupru 
    ABABII, Nicolai; POSTICA, Vasile; TROFIM, Viorel; LUPAN, Oleg (Universitatea Tehnică din Cluj-Napoca, 2018)
    Senzor de etanol pe baza nanofirelor (nanostructurilor) de CuO cu o sensibilitate înaltă, timp mic de răspuns/recuperare și o reproductibilitate înaltă a parametrilor.
  • Series and parallel connection of individual Pd-modified ZnO nanowires for gas sensing applications 
    LUPAN, O.; POSTICA, V.; CRETU, V.; PAUPORTE, T.; ADELUNG, R. (Academy of Sciences of Moldova, 2016)
    The hydrogen gas sensing properties of nanodevices based on two ZnO nanowires (NWs) functionalized/modified with palladium (Pd/ZnO) at room temperature are studied. The main goal of the study is to find which of the ...
  • Si, Ge and SiGe wires for sensor application 
    DRUZHININ, A. A.; KHOVERKO, Yu. M.; OSTROVSKII, I. P.; NICHKALO, S. I.; NIKOLAEVA, A. A.; KONOPKO, L. A.; STICH, I. (Technical University of Moldova, 2011)
    Resistance and magnetoresistance of Si, Ge and Si-Ge micro- and nanowires were studied in temperature range 4,2-300 K at magnetic fields up to 14 T. The wires diameters range from 200 nm to 20 m. Ga- In gates were created ...
  • 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 Nanosensors: A Case Study of the Effects of Metal Doping on ZnO 
    LUPAN, O.; CHOW, L.; PAUPORTE, Th.; VIANA, B.; ADELUNG, R. (Tehnica UTM, 2015)
    Individual nanowire/nanorod sensors of semiconducting oxides are of great interest for science and engineering. In current work, the effects of metal doping on ZnO nanowire properties are presented. It is found that ...
  • 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 ...
  • The Single-crystal Bi–Sn nanowires for use as the branch of low-temperature energy converters 
    NIKOLAEVA, Albina; KONOPKO, Leonid; BODIUL, Pavel; POPOV, Ivan; PARA, Gheorge (Romanian Inventors Forum, 2022)
    The aim of this work was to prepare p-type nanowires exhibiting high thermoelectric efficiency for use in miniature thermoelectric power converters in a temperature range of 70–100 K.
  • 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.
  • Spatially resolved cathodoluminescence of GaN nanostructures fabricated by photoelectrochemical etching 
    DÍAZ-GUERRA, C.; PIQUERAS, J.; POPA, V.; COJOCARU, A.; TIGINYANU, I. M. (American Institute of Physics, 2005)
    The emission properties of GaN nanostructures created by photoelectrochemical etching have been investigated by cathodoluminescence sCLd in the scanning electron microscope. Columnar structures with diameters of 150–250 ...
  • 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 ...

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