IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Articole din publicaţii internaţionale by Title

Browsing Articole din publicaţii internaţionale by Title

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  • GaN nucleation on (0 0 0 1)-sapphire via ion-induced nitridation of gallium 
    SIDORENKO, A.; PEISERT, H.; NEUMANN, H.; CHASSÉ, T. (ELSEVIER, 2006)
    The growth of epitaxial GaN films on (0001)-sapphire has been investigated using X-ray photoelectron spectroscopy (XPS) and low energy electron diffraction (LEED). In order to investigate the mechanism of the growth in ...
  • GaN nucleation on 6H-SiC(0 0 0 1)-(√3×√3)R30°:Ga and c-sapphire via ion-induced nitridation of gallium: Wetting layers 
    SIDORENKO, A.; PEISERT, H.; NEUMANN, H.; CHASSE, T. (Elsevier, 2007)
    We present X-ray Photoemission (XPS) and low energy electron diffraction (LEED) investigations of initial stages of GaN film growth on sapphire(0001) and SiC(0001)-√3×√3:Ga. The growth of ultrathin films is performed by ...
  • GaN Schottky multiplier diodes prepared by electroplating: a study of passivation technology 
    COJOCARI, O.; POPA, V.; URSAKI, V. V.; TIGINYANU, I. M.; HARTNAGEL, H. L.; DAUMILLER, I. (IOP Publishing, 2004)
    This paper presents the results of a Pt/n-GaN Schottky contact technology development based on electrochemical metal deposition. Three different technological approaches are used to fabricate GaN varactor diodes. The effects ...
  • GaN versus ZnO: Growth, properties and applications 
    TIGINYANU, Ion (Academica Greifswald, 2017)
    GaN and ZnO are wide band gap semiconductor compounds with unique properties favourable for the development of short-wavelength light emitting devices and high-power electronics. From the point of view of applications, ...
  • A GaN-based two-sensor array for methane detection in an ethanol environment 
    POPA, V.; TIGINYANU, I. M.; URSAKI, V. V.; VOLCIUS, O.; MORKOÇ, H. (IOP Publishing, 2006)
    We demonstrate that photoelectrochemical (PEC) etching of GaN layers in KOH or H3PO4 solutions leads to the formation of specific surface morphologies which cause the material to exhibit different sensitivities to certain ...
  • GaP template based semiconductor-metal nanocomposite 
    ALBU, Sergiu; MONAICO, Eduard; TIGINYANU, I. M.; URSAKI, V. V. (Institutul de Fizică Aplicată, AŞM, 2006)
    The interest in nanometer-scale materials and devices stimulated the development of alternative technologies in recent years. Metal nanowires are one of the most attractive materials because of their unique properties ...
  • Gas sensing characterization of tellurium thin films by Kelvin probe technique 
    TSIULYANU, D.; MARIAN, S.; MOCREAC, O. (Institutul de Fizică Aplicată al AŞM, 2012)
    In this paper, the change of work function ( Δφ ) of the tellurium thin films was studied in response to different concentrations of nitrogen dioxide, carbon oxide, ozone and water vapor using a KP with a gold grid reference ...
  • Gas-sensing features of nanostructured tellurium thin films 
    TSIULYANU, Dumitru (Beilstein Institute for the Advancement of Chemical Sciences (Germany), 2020)
    Nanocrystalline and amorphous nanostructured tellurium (Te) thin films were grown and their gas-sensing properties were investigated at different operating temperatures with respect to scanning electron microscopy and X-ray ...
  • Gaseous fuels potential assessment for Moldova 
    CAPITAN, Olga (Institutul de Energetică al Academiei de Științe a Moldovei, 2016)
    In this paper, there has been determined the regional biogas and syngas potential and the electric power that could be installed. As raw materials, applicable in this field, was considered animal waste, industrial waste, ...
  • Gazeificarea biomasei solide şi costul singazului produs 
    GHERMAN, Cristina; ŞVEŢ, Olga; ARSENI, Lucia (Institutul de Energetică al Academiei de Științe a Moldovei, 2012)
    În lucrarea dată a fost determinat costul singazului produs din paie şi chips-uri la diferite capacităţi ale gazificatorului, în condiţiile Republicii Moldova. Pentru acesta, au fost determinate ratele de creştere ale ...
  • Gândire algoritmică: concept și analiză a resurselor educaționale digitale formative 
    BURLACU, Natalia (Bucharest University Press, 2019)
    The present material contains an analytical framework regarding the concept of algorithmic thinking (AT): semantics, the area of use, the training mode, the imperatives of developing and implementing of the cognitive skills ...
  • General aspects concerning multifunctional fiber textiles 
    RARU, Aliona; FLOREA-BURDUJA, Elena; IROVAN, Marcela; FARÎMA, Daniela (Editura Universităţii din Oradea, 2020)
    This paperwork analyses the synthesis of literature regarding functional textiles. The actuality of the theme is determined by the overwhelming specialists' interest upon the solution to the problem of elaboration of new ...
  • General Evaluation of the Potential of the Cultural-Historical Heritage Built in the Republic of Moldova 
    JITARI, Liliana (Scientific Research Publishing Inc., 2021)
    This article analyzes the efficiency of the administration, as well as the way of financing the cultural heritage of the Republic of Moldova through the prism of the legal, institutional and cultural policy framework. ...
  • Generalized higher derivations 
    COJUHARI, E. P.; GARDNER, B. J. (Australian Mathematical Publishing Association Inc., 2012)
    A type of generalized higher derivation consisting of a collection of self-mappings of a ring associated with a monoid, and here called a D-structure, is studied. Such structures were previously used to define various kinds ...
  • Generalized model of the metal/n-GaN Schottky interface and improved performance by electrochemical Pt deposition 
    COJOCARI, Oleg; HARTNAGEL, Hans L. (American Vacuum Society, 2006)
    A modified model of the Schottky interface is proposed, which includes a near-surface layer (NSL) in the depletion region of the semiconductor. An important effect of the NSL is the ability to make the value of the Schottky ...
  • Generation of coherent phonon pulses by hot electrons in non-crystalline semiconductors 
    ANDRIESH, A. M.; ENAKI, N. A.; KOROLI, V. I.; CULEAC, I. P.; CIORNEA, V. I. (National Institute of Optoelectronics, Romania, 2000)
    We study the cooperative generation of phonon pulses in semiconductors by groups of inverted equidistant multilevel coupled excitations (electrons, excitons). Such equidistant systems take place in chalcogenide glasses ...
  • Generation of precessional gear teeth by plastic deformation 
    TRIFAN, N.; CIOBANU, R.; CIOBANU, O. (IOP Publishing, 2021)
    The correct choice of the dimensions of the workpiece product is one of the main problems, the solution of which depends on the reduction of the consumption of materials and energy, as well as the quality of the wheels ...
  • Generation of the teeth precessional gears by plastic deformation 
    BOSTAN, I.; DULGHERU, V.; TRIFAN, N. (IOP Publishing, 2018)
    The paper presents a method for obtaining the teeth of the precessional gear by plastic deformation. There are analyzed the basic problems that must be resolved to apply this process: determination of dimensions of initial ...
  • Geographical Origin Identification of Moldavian Wines by Neutron Activation Analysis 
    ZINICOVSCAIA, Inga; DULIU, Octavian G.; CULICOV, Otilia Ana; STURZA, Rodica; BILICI, Constantin; GUNDORINA, Svetlana (Springer Nature Switzerland, 2017)
    To get more data regarding the elemental transfer from soil to wine, the neutron activation analysis was used to determine 35 elements in vineyard chernozem soil and 18 elements in wines from Romanesti and Cricova, Republic ...
  • Geometrical Aspects of the Covariant Dynamics of Higher Order 
    OPRIŞ, D.; ALBU, I. D. (Springer Nature Switzerland, 1998)
    We present some geometrical aspects of a higher-order jet bundle which is considered a suitable framework for the study of higher-order dynamics in continuous media. We generalize some results obtained by A. Vondra, [7]. ...

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