Articole din publicaţii internaţionale: Recent submissions

  • Porosity-induced blueshift of photoluminescence in CdSe 
    MONAICO, E.; URSAKI, V. V.; TIGINYANU, I. M. (American Institute of Physics, 2006)
    Porous CdSe layers have been fabricated by anodic etching of n-type single crystalline substrates with different values of conductivity. The morphology and porosity of the layers thus produced were found to be controlled ...
  • Self-Organized Three-Dimensional Nanostructured Architectures in Bulk GaN Generated by Spatial Modulation of Doping 
    TIGINYANU, Ion; STEVENS-KALCEFF, Marion A.; SARUA, Andrei; BRANISTE, Tudor; MONAICO, Eduard; POPA, Veaceslav; ANDRADE, Hugo D.; THOMAS, James O.; RAEVSCHI, Simion; SCHULTE, Karl; ADELUNG, Rainer (The Electrochemical Society, 2016)
    Self-organized 3D nanostructured architectures including quasi-ordered concentric hexagonal structures generated during the growth of single crystalline n-GaN substrates by hydride vapor phase epitaxy (HVPE) are reported. ...
  • Methodology for food fraud risk assessment 
    GHEORGHIŢĂ, Maria; OBERŞT, Ala (Institutul de Cercetari Economice şi Sociale “Gheorghe Zane”, Iaşi, 2019)
    Food frauds, perceived as economic offenses, havedeepcauses in the economic context in which companies operate. The food fraud risks are generated by economic operators in the food chain, and their effects have a negative ...
  • Thermal analysis of the composition of gallium and sulfur oxides obtained by thermal oxidation of gallium (III) sulfide 
    SPRINCEAN, Veaceslav; CARAMAN, Iuliana; UNTILA, Dumitru; VATAVU, Elmira; EVTODIEV, Igor; TIGINYANU, Ion (Academica Greifswald, 2017)
    Oxides of both Ga and In elements (Ga2O3, In2O3) are wide bandgap materials and have molecular gas adsorption properties, such as CO and CO2. They are materials with semiconductor properties, which doping with chemical ...
  • Environmental stress screening (ESS) 
    BĂJENESCU, Titu-Marius (Editura ELECTRA, 2019)
    Reliability tests are often indispensable. The material properties, needed in design, can only sometimes be found in data sheets. If they are not available, they must be obtained by testing. Also, the manufacturers of ...
  • Failures analysis of microcircuits 
    BĂJENESCU, Titu-Marius (Editura ELECTRA, 2019)
    For failure analysis of integrated circuits it is necessary to open and delayer a chip layer by layer in order to find a hidden defect or defects. It is necessary to determine the cause of failure to prevent future occurrence, ...
  • 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, ...
  • Research data in the context of open science: Case study of the Republic of Moldova 
    RUSU, Andrei; ŢURCAN, Nelly; CUJBA, Rodica; GRECU, Mihai (Facultas Verlags- und Buchhandels, 2019)
    At present, there are important changes in scientific research, changes that concern both the organization, realization and evaluation of research, as well as the use and dissemination of scientific results. These changes ...
  • Raman and IR-Reflectance Spectra of Porous III–V Semiconductor Structures 
    SARUA, A.; GÄRTNER, G.; IRMER, G.; MONECKE, J.; TIGINYANU, I. M.; HARTNAGEL, H. L. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2000)
    Porous layers on the basis of LEC-grown n-type crystals of (111)-GaP and (100)-InP were fabricated by electrochemical etching in aqueous acidic solutions. The prepared samples were studied by micro-Raman analysis and by ...
  • Parametrii de calitate a şroturilor din seminţe oleaginoase utilizaţi în produsele de carne 
    GRUMEZA, Irina; MACARI, Artur; GUDIMA, Angela; COEV, Ghenadii (Centrul editorial UASM, 2018)
    This paper presents the results on possibility of using the flour of oilseeds groats in meat products. As a research object were used flour of groats of walnuts, pumpkin seeds, grape seeds, sesame seeds and flax seed. ...
  • Photoluminescence of Eu-doped ZnO structures 
    URSAKI, Veaceslav V.; RUSU, Emil; ZALAMAI, Victor; SIRBU, Lilian; MONAICO, Eduard; TIGINYANU, Ion M. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2004)
    ZnO-based red phosphors were prepared by different methods. One phosphor was grown from a Na2B4O7 melt, and another one was prepared from a ZnO:Eu2O3 powder via electron beam treatment. The e-beam processing is found to ...
  • The role of stress management in the relationship manager-subordinate 
    LUNGU, Viorelia ("Print-Caro" SRL, 2019)
    Although there are numerous investigations related to occupational stress, in the educational field, a particular approach to this phenomenon is necessary, because in the pedagogical activity, there are permanent communication ...
  • Применение ростовых веществ в инкрустации семян кукурузы 
    БОРОВСКАЯ, Ала; МАЩЕНКО, Наталия; ГУРЕВ, Анжела; ИВАНОВА, Раиса (Institutul de Fitotehnie „Porumbeni“, 2018)
    The possibilities of application the complex of the sodium salt of carboxymethylcellulose (CMC) the drug "ecostim" allowed for use in the territory of the Republic of Moldova, for encrusting of corn seeds have been studied. ...
  • Design and maskless fabrication of ultrathin suspended membranes of GaN 
    TIGINYANU, I. M.; POPA, V.; STEVENS-KALCEFF, M. A.; GERTHSEN, D.; BRENNER, P.; PAVLIDIS, D. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2012)
    We report the maskless fabrication of ultrathin suspended GaN membranes designed by focused ion beam treatment of the GaN epilayer surface with subsequent photoelectrochemical etching. This technological approach allows ...
  • Thermally activated cation ordering in ZnGa2Se4single crystals studied by Raman scattering, optical absorption, andab initiocalculations 
    VILAPLANA, R.; GOMIS, O.; PEREZ-GONZÁLEZ, E.; ORTIZ, H. M.; MANJÓN, F. J.; RODRIGUEZ-HERNANDEZ, P.; MUŇOZ, A.; ALONSO-GUTIÉRREZ, P.; SANJUÁN, M. L.; URSAKI, V. V.; TIGINYANU, I. M. (IOP Publishing, 2013)
    Order–disorder phase transitions induced by thermal annealing have been studied in the ordered-vacancy compound ZnGa2Se4 by means of Raman scattering and optical absorption measurements. The partially disordered as-grown ...
  • Poly(p-phenylene vinylene)/porous GaP composite materials 
    LE RENDU, P.; NGUYEN, T. P.; LAKEHAL, M.; IP, J.; TIGINYANU, I. M.; SARUA, A.; IRMER, G. (ELSEVIER, 2001)
    We report results obtained from physical characterization of thin composite films made by mixing poly(p-phenylene vinylene) (PPV) and porous gallium phosphide (GaP) particles with different GaP concentrations. Optical ...
  • 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 ...
  • Strongly frequency dependent focusing efficiency of a concave lens based on two-dimensional photonic crystals 
    FOCA, E.; FÖLL, H.; CARSTENSEN, J.; SERGENTU, V. V.; TIGINYANU, I. M.; DASCHNER, F.; KNÖCHEL, R. (American Institute of Physics, 2006)
    Results of an experimental study of a concave lens based on a two-dimensional microwave photonic crystal with neff<1 are shown. We demonstrate that the lens focuses electromagnetic radiation for transverse electric (TE) ...
  • 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 ...
  • ZnSe-based conductive nanotemplates for nanofabrication 
    MONAICO, Eduard; TIGHINEANU, Petru; LANGA, Sergiu; HARTNAGEL, Hans L.; TIGINYANU, Ion (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2009)
    We show that anodic etching of n-type ZnSe crystalline substrates leads to the formation of pores which, after nucleation at surface defects, prove to follow the current lines, exhibiting multiplication until the front of ...

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