Browsing by Subject "nanostructures"

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  • Proprietăţile senzoriale ale nanostructurilor bazate pe oxizi metalici 
    VRABIE, Alexei (Universitatea Tehnică a Moldovei, 2020)
    Scopul lucrării este de a cerceta proprietățile senzoriale ale nanostructurilor bazate pe dioxid de titan dopate cu nanopuncte de Ag și Au și de a analiza care dintre gazele studiate (Hidrogen, Metan, Metanol, vapori de ...
  • Prospects of nanostructures Bi1−xSbx for thermoelectricity 
    NIKOLAEVA, Albina A.; KONOPKO, Leonid A.; HUBER, Tito E.; BODIUL, Pavel P.; POPOV, Ivan A. (Elsevier, 2012)
    It has been predicted that surface states of topological insulators have large a thermopower and also ultrahigh mobilities. The authors report results of a magneto-thermoelectric investigation of single crystal Bi1−xSbx ...
  • Rapid photothermal processing for functionalization of nanostructured thin films 
    SHISHIYANU, S.; URSAKI, V. V.; GHIMPU, L.; LUPAN, O.; TIGINYANU, I.; SHISHIYANU, T. (Institute of Electrical and Electronics Engineerings, IEEE, 2011)
    A rapid photothermal processing (RPP) technique has been developed to functionalize a new generation of nanostructured zinc oxide film materials. An environment-friendly chemical process was used to obtain nanostructures. ...
  • 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 ...
  • Re-entrance superconductivity in nanostructures based on Nb and Cu-Ni – alloy layers 
    MORARI, Roman (Technical University of Moldova, 2024)
    An original vacuum technology for reliable and reproducible preparation of high quality nanostructures “superconductor /ferromagnet” (S/F) using magnetron sputtering is developed. Superconducting properties of atomic ...
  • Rezonatoare laser în nanostructuri de ZnO cu moduri de emisie controlate de morfologie 
    URSACHI, Veaceslav; RUSU, Emil; ZALAMAI, Victor; TIGHINEANU, Ion (Academia de Ştiinţe a Moldovei, 2011)
    The paper gives an overview of technological elaborations performed at the Institute of Applied Physics and the Institute of Electronic Engineering and Nanotechnologies “D. Giţu” of the Academy of Sciences of Moldova for ...
  • 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 ...
  • Self-assembly ZnO nanostructures for nanoscale devices applications 
    LUPAN, Oleg; SONTEA, Victor; CHOW, Lee; CHERNYAK, Leonid; RAILEAN, Serghei (University of Craiova, 2008)
    We demonstrate a synthetic approach to selfassembly ZnO nanostructures on flat, spherical and curved surfaces. Self-assembly of ZnO nanorods was performed in aqueous solution. The effects of electric field, biopolymer ...
  • Sensitivity Evaluation of the Nanostructure-Enhanced BAW Mass Sensor 
    ZAZERIN, A.; ULIANOVA, V.; BOGDAN, O.; ORLOV, A. (Tehnica UTM, 2015)
    The general implementation concept of the mass sensor based on membrane bulk acoustic wave resonator with nanostructured sensing layer was presented. The 3- dimensional finite element model of the thin film bulk acoustic ...
  • Senzor de radiaţie ultravioletă în baza nano-structurilor GaN 
    DOROGAN, Valerian; VIERU, Tatiana; ZAPOROJAN, Sergiu; DOROGAN, Andrei; VIERU, Stanislav; MUNTEANU, Eugen; SECRIERU, Vitalie (Universitatea Tehnică din Cluj-Napoca, 2013)
    Senzorul este confecţionat în baza nano-structurilor GaN cu joncţiune p-n profilată şi capacitate variabilă în funcţie de tensiunea aplicată şi intensitatea radiaţiei ultraviolete incidente. Avantajele constau în sensibilitate ...
  • Simulation and validation of molecular genetic triggers networks with timed hybrid Petri Nets 
    PROFIR, Aurelia; GUŢULEAC, Emilian; BOIAN, Elena (Stefan cel Mare University of Suceava, Romania, 2004)
    In this paper a bistable self-organizing genetic structure with two alternative stable states (true and false) – one-dimensional molecular-genetic trigger (1D MGT) – is modeled with Timed Hybrid Petri Nets. It has been ...
  • Single nanowire nanosensors: Fabrication and detailed studies 
    LUPAN, O.; POSTICA, V.; LAZARI, E.; GRÖTTRUP, J.; KAIDAS, V.; ADELUNG, R. (IEEE, 2017)
    Individual metal oxide nanostructures are ideal building blocks for ultra-low-power and high performance sensing devices. Due to their multifunctionality, they are promising candidates for future optoelectronic and gas ...
  • A Single ZnO Nanosheet-based UV Photodetector 
    POSTICA, Vasile; LUPAN, Oleg; PAULOWICZ, Ingo; SHREE, Sindu; WOLFF, Niklas; KUMAR MISHRA, Yogendra; KIENLE, Lorenz; ADELUNG, Rainer (Tehnica UTM, 2018)
    In this work, an individual zinc oxide (ZnO) nanosheet was integrated into a sensor device for detection of UV light with ultra-high photosensitivity. Three-dimensional (3-D) and two-dimensional (2-D) highly porous ZnO ...
  • Sinteza nanocristalitelor de CuO:Ag pentru aplicații în senzori de gaze 
    CREŢU, Vasilii (Academia de Științe a Moldovei, 2015)
    The CuO:Ag nanocrystallites were synthesized from the chemical solutions (SCS). Morphological and chemical properties were investigated by using scanning electron microscopy (SEM) and EDX, respectively. Gas sensing studies ...
  • 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 ...
  • 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 ...
  • Superconducting Spin Switch Based on Superconductor-Ferromagnet Nanostructures for Spintronics 
    KEHRLE, Jan; ZDRAVKOV, Vladimir; MUELLER, Claus; OBERMEIER, Guenter; SCHRECK, Matthias; GSELL, Stefan; HORN, Siegfried; TIDECKS, Reinhard; MORARI, Roman; PREPELITSA, Andrei; ANTROPOV, Evgenii; SOCROVISCIUC, Alexei; NOLD, Eberhard; TAGIROV, Lenar; SIDORENKO, Anatoli (Technical University of Moldova, 2011)
    Very rapid developing area, spintronics, needs new devices, based on new physical principles. One of such devices – a superconducting spin-switch, consists of ferromagnetic and superconducting layers, and is based on a new ...
  • Superconducting Triplet Proximity and Josephson Spin Valves 
    TAGIROV, L. R.; KUPRIYANOV, M. Y.; KUSHNIR, V. N.; SIDORENKO, A. (Springer Nature Switzerland, 2018)
    A heterostructure comprising several ferromagnetic and superconducting layers acquires functionality of managing the superconducting properties of a system applying external magnetic field. At non-collinear magnetic ...
  • Surface-related phonon mode in porous GaP 
    TIGINYANU, I. M.; URSAKI, V. V.; KARAVANSKII, V. A.; SOKOLOV, V. N.; RAPTIS, Y. S.; ANASTASSAKIS, E. (ELSEVIER, 1996)
    Porous GaP layers prepared by electrochemical anodization of (1 0 0) and (1 1 1) A-oriented n-GaP crystalline substrates in HF solution have been studied by Raman spectroscopy. A surface vibrational mode at 397 cm−1 was ...
  • Synthesis and characterization of electrodeposited samaria and samaria-doped ceria thin films 
    LAIR, V.; ŽIVKOVIĆ, L. S.; LUPAN, O.; RINGUEDÉ, A. (ELSEVIER, 2011)
    Samaria (Sm2O3) and samaria-doped ceria (SDC) films are electrochemically deposited on stainless steel in view of a potential use in solid oxide fuel cells. As it is possible to deposit separately pure ceria (CeO2) and ...

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