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Browsing Articole din publicaţii internaţionale by Title

Browsing Articole din publicaţii internaţionale by Title

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  • Birefringence and excitonic spectra of TlGaS2 crystals 
    STAMOV, I. G.; SYRBU, N. N.; URSAKI, V. V.; ZALAMAI, V. V. (Elservier, 2013)
    The anisotropy of transmission spectra was investigated in TlGaS2 crystals. An intensive transmission line was found in samples placed between two crossed polarizers. Ground and excited states of excitons were detected in ...
  • Birefringence in In0 .3Ga0 .7As/GaAs Quantum Layers 
    SYRBU, N.; DOROGAN, A.; DOROGAN, V.; TIRON, A.; ZALAMAI, V. (American Scientific Publishers, 2015)
    Reflection, wavelength modulated reflection and transmission spectra at P, P (S, S) and 45°, 45° (135°, 135°) polarizations for incidence angles close to normal and Brewster one were researched in quantum In0.3Ga0.7As ...
  • Birefringence in PbGa2S4 AND CdGa2S4 crystals 
    NEMERENCO, L.; PARVAN, V.; SYRBU, N.; MASNIC, A. (Institutul de Fizică Aplicată al AŞM, 2012)
    Cadmium thiogallate CdGa2S4 has a coefficient of nonlinear susceptibility is five times greater than the coefficient of nonlinear susceptibility of niobate lithium . The dispersion of birefringence in CdGa2S4 and PbGa2S4 ...
  • Birefringence in quantum wells of heterostructures In0.68Al0.1Ga0.13As/In0.42Al0.22Ga0.24As/InP 
    SYRBU, N.; DOROGAN, A.; DOROGAN, V.; ZALAMAI, V. (Elservier, 2015)
    The polarization dependences of reflection and wavelength modulated reflection spectra of quantum wells In0.68Al0.1Ga0.13As/In0.42Al0.22Ga0.24As were investigated. Spectral dependences of refractive indices, extinction ...
  • Birefringence of Cu2ZnSiSe4 single crystals 
    SYRBU, N. N.; ZALAMAI, V.; GUC, M.; LEVCENKO, S.; DOROGAN, A.; ARUSHANOV, E. (Elservier, 2015)
    In Cu2ZnSiSe4 single crystals an interference spectra of the Fabry–Perot type due to observed birefringence were studied and spectral dependence of the refractive index n|| (E||c) and n⊥ (E⊥c), which intersect at isotropic ...
  • Birefringence of CuGa2S4 crystals 
    SYRBU, N.; DOROGAN, A.; URSAKI, V.; STAMOV, I.; TIGINYANU, I. M. (The Electrochemical Society, 2011)
    Investigation of the spectral characteristics as a function of the crystal thickness demonstrates that one can create filters using thin crystals for selecting several spectral lines. The wavelength of these lines is ...
  • Birefringence of CuGaxAl1-xSe2 crystals 
    SYRBU, N. N.; DOROGAN, A. V.; MASNIK, A.; URSAKI, V. V. (IOP Publishing, 2011)
    Excitonic reflection spectra of CuAlSe2 crystals were studied at 10 K. The spectral dependences of refractive indices no and ne were calculated. The isotropic wavelength (the point of intersection of no and ne) in the ...
  • Birefringence of SnSe single crystals in excitonic and electronic transitions region 
    ZALAMAI, V. V.; TIRON, A. V.; RUSU, E. V.; SYRBU, N. N. (IOP Publishing, 2019)
    Absorption spectra in temperature range 300–10 K were studied. The minimal band gap A1 (1.091 eV at 300 K) is formed by direct allowed in E∣∣c polarization and forbidden in E∣∣a polarizations transitions. The next interval ...
  • Birefringence of ZnP2-D48 and Characteristics of Ме-ZnP2 Diodes 
    STAMOV, I. G.; SYRBU, N. N.; NEMERENCO, L.; ZALAMAI, V. (Open Science Publishers, 2015)
    Spatial dispersion in ZnP2-D4 8 has been studied. The spectral dependences of the refractive index nс (Е||с, k||a), nа (Е||а, k||с) and nb (E||b, k||c) had been determined. ZnP2-D4 8 crystals are isotropic at λо=612nm ...
  • Birocrația de urgență: pregătirea autorităților pentru noile provocări 
    PRODAN-ŞESTACOVA, Liubovi (Academia de Administrare Publică, Republica Moldova, 2021)
    The activity of public authorities in the western space during the last two centuries had the characteristics of a classic bureaucracy. A number of principles of this model of organization of administrative structures gave ...
  • Blended teaching and learning approach applied to electrical and computer engineering education 
    ADĂSCĂLIŢEI, Adrian; ARĂDOAIEI, Sebastian Teodor; TODOS, Petru Ion; DULGHERU, Valeriu (Technical Sciences Academy of Romania, 2020)
    The article presents a review of the current e-pedagogical methods to develop Electrical and Computer Engineering Education (ECEE) Study Programs using Blended an Learning (BTL). Engineering crucial experimental competences ...
  • Blue-red electroluminescence from hybrid Eu:phosphors/ZnO-nanowires/p-GaN LED 
    VIANA, B.; PAUPORTE, T.; LUPAN, O.; DEVIS, L.; GACOIN, T. (SPIE, Society of Photo-Optical Instrumentation Engineers, 2014)
    Nanowire (NW) based light emitting diodes (LEDs) have drawn great research interest due to many advantages compared to thin film based devices. Marked improved performances are expected from nanostructured active layers ...
  • Blue-red electroluminescence from hybrid Eu:phosphors/ZnO-nanowires/p-GaN LED 
    VIANA, B.; PAUPORTE, T.; LUPAN, O.; DEVIS, L.; GACOIN, T. (SPIE, 2021)
    Nanowire (NW) based light emitting diodes (LEDs) have drawn great research interest due to many advantages compared to thin film based devices. Marked improved performances are expected from nanostructured active layers ...
  • Body zero frequency modes in photonic crystals of nanopores and nanocylinders 
    SERGENTU, Vladimir; URSAKI, Veaceslav; SIRBU, Lilian (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2013)
    In this paper, we demonstrate that body zero frequency modes can exist at extremely low frequencies in a system of nanocylinders made of non-dissipative material. Such kind of modes is not specific to single nanocylinders, ...
  • Boris Șirocorad – promotor al multiplelor figuri de stil în grafica satirică 
    ADASCALIȚA, Lucia (Institutul Patrimoniului Cultural al AŞM, 2021)
    Creația artistului Boris Șirocorad este bogată și diversă din punct al tematicii, diversității de gen, particularităților stilistice, tehnicilor de realizare, modalităților de structurare compozițională și a mesajelor ...
  • Bose-Einstein condensation in the two-component non-linear exciton gas 
    MOSKALENKO, S. A.; BOBRYSHEVA, A. I.; RUSSU, S. S.; BALTAGA, V. V.; LELYAKOV, A. V. (IOP Publishing, 1985)
    The statistical properties of non-linear two-component ortho-para exciton gas are considered, employing the Bogoliubov variational principle and the mean-field approximation. The exciton concentrations are determined from ...
  • Bound exciton in CuGaS2 
    SYRBU, N. N.; BEJAN, V. N.; TEZLEVAN, V. E.; NEMERENCO, L. L. (Institutul de Fizică Aplicată, AŞM, 2006)
    In CuGaS2 crystals absorption and luminescence spectra at the temperature 9 К at excitation by different wavelengths of Ar+ laser are investigated. In the luminescence and absorption spectra in crystals CuGaS2 at the ...
  • Bound exciton in CuGaS2 
    SYRBU, N. N.; NEMERENCO, L. L.; BEJAN, V. N.; TEZLEVAN, V. E. (Elservier, 2007)
    In CuGaS2 crystals absorption and luminescence spectra at the temperature 9K at excitation by different wavelengths of Ar laser are investigated. A series of lines available in luminescence and absorption spectra is found. ...
  • Broadband power detector using a circularly-toothed planar logarithmic-periodic antenna 
    SYDLO, C.; KÖGEL, B.; COJOCARI, O.; FEIGINOV, M.; HARTNAGEL, H. L.; MEISSNER, P. (IEEE, 2005)
    A broadband antenna has been coupled to a planar Schottky diode for the realisation of a sensitive power detector for mm-wave frequencies. The measured response curve is in agreement with calculations and shows values of ...
  • Broadband zero-bias Schottky detector for E-field measurements up to 100 GHz and beyond 
    HOEFLE, M.; PENIRSCHKE, A.; COJOCARI, O.; JAKOBY, R. (IEEE, 2013)
    A broadband detector for electrical field measurements is presented in this paper, deploying an attenuated dipole resonance. High sensitive zero-bias Schottky diodes with anode diameters of 1.5μm allow electrical field ...

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