2009: Recent submissions

  • Observation of Quantum Oscillations in Single Crystal Bi Nanowires 
    KONOPKO, Leonid (Technical University of Moldova, 2009)
    We present here experimental measurements of Aharonov-Bohm (AB) oscillations on single Bi nanowires with diameter d < 80 nm. The single nanowire samples were prepared by Ulitovsky technique and represented cylindrical ...
  • Filiform nanoarchitectures consisting of arrays of highly integrated Bi nanowires in glass envelopes 
    POSTOLACHE, V.; IOISHER, A.; MONAICO, E.; BADINTER, E.; TIGINYANU, I.M. (Technical University of Moldova, 2009)
    Using a modified version of the Taylor method, we show the possibility to produce glass micro-cables comprising huge amounts of Bi nanowires in glass envelopes, each nanowire being electrically isolated from the neighbouring ...
  • High aspect ratio self ordered alumina nanotubes, SEM and EDX characterization 
    ENACHI, Mihail (Technical University of Moldova, 2009)
    Alumina nanotube and porous membranes were fabricated by anodic oxidation of 99.99 % aluminum foils in aqueous electrolytes containing orthophosphoric acids and nickel sulfate hydrate. This way, nanotubes and porous alumina ...
  • Comparison of Morphologies of Porous InP Layers Obtained in Different Electrolytes 
    SPRINCEAN, V.; COJOCARU, A.; MONAICO, E.; TIGINYANU, I.; FÖLL, H. (Technical University of Moldova, 2009)
    In this paper we present the possibility for nanostructuring of InP using an electrolyte based on aqueous solution of NaCl. A classical grow of columnar pores was obtained. In particular it was observed that there is no ...
  • Selective Photoreceivers with Modulated Sensibility 
    DOROGAN, Valerian; VIERU, Tatiana; VIERU, Stanislav; DOROGAN, Andrei (Technical University of Moldova, 2009)
    The paper presents new type of photoreceivers (photodiodes, photoresistor) on the basis of semiconductor heterostructures of III-V compounds. As distinct from classic devices elaborated photoreceivers possesses new functional ...
  • Porous morphologies in Si, III-V and II-VI compounds: a comparative study 
    LANGA, S.; MONAICO, E.; FÖLL, H.; TIGINYANU, I.M. (Technical University of Moldova, 2009)
    Porous morphologies obtained during the anodization of semiconductors are mainly determined by particular characteristics of the semiconductor-electrolyte interfaces and the bulk properties of the semiconductor itself. ...
  • Giant magnetoresistance and magnetothermopower in single-crystal Bi1-x Sbx wires 
    NIKOLAEVA, A.; BODIUL, P.; KONOPKO, L.; MOLOSHNIK, E.; POPOV, I. (Technical University of Moldova, 2009)
    A signicative increase in the transverse magnetoresistance and magnetothermopower in single-crystal Bi1-x Sbx wires obtained by liquid phase casting in the temperature range 80-100 K is found. A shift to the range of lower ...
  • Sinteza şi proprietăţile optice ale soluţiilor coloidale de nanocristalele de PbS 
    MITIOGLU, Anatolie; GAVRILUŢA, Anatolie; LASCOVA, Renata; GHERMAN, Cornel (Technical University of Moldova, 2009)
    The peculiarities of photoluminescence (PL) and optical absorption spectra of PbS nanocrystals (NC) were investigated. The PbS NCs were obtained in chloroform as well as aqueous colloidal solutions using different technologic ...
  • Surfactant-Assisted Synthesis of Lead Telluride Nanoparticles: Shape, Size, and Assembly 
    TODOSICIUC, A.; NICORICI, A.; GUTSUL, T.; GRAMM, F.; SHKLOVER, V. (Technical University of Moldova, 2009)
    Colloidal suspensions of PbTe nanoparticles coated with oleic acid (OA) were obtained using a high-temperature solution phase (HTSP) method. Diphenyl ether was used as a high-boiling heat-transfer agent. Nanoparticle size ...
  • Structura spectrelor de reflexie ale antimonidului de galiu dopat cu fier 
    GHEORGHIŢĂ, Eugen; ZLOTEA, Olga; UNTILĂ, Pantelei (Technical University of Moldova, 2009)
    In present paper it is analyzed the reflection spectra structure of nondoped gallium antimonide and gallium antimonide doped with iron in different concentrations at T=300K temperature. The investigated samples were obtained ...
  • Nonmonotonic behaviour of superconducting critical temperature of Nb/CuNi bilayers with a nanometer range of layer thickness 
    MORARI, R.; ZDRAVKOV, V. I.; ANTROPOV, E.; SOCROVISCIUC, A.; PREPELITA, A.; TAGIROV, L. R.; KUPRIYANOV, Mu. Yu.; SIDORENKO, A. S. (Technical University of Moldova, 2009)
    Present work reports the result of the proximity effect investigation for superconducting Nb/CuNi-bilayers with the thickness of the ferromagnetic layer (CuxNi1-x) being in the sub-nanometer range. It was found a non-monotonic ...
  • Infrared system for control of Postoffice Messages 
    SOCROVISCHIUC, A.; PREPELITSA, A.; COJOCARU, V.; SURDU, A.; ANTROPOV, E.; MORARI, R.; BANDURYAN, B.; BAZALEEV, M.; KLEPIKOV, V.; LYTVYNENKO, V.; SIDORENKO, A. (Technical University of Moldova, 2009)
    It is proposed a simultaneous method for treatment and control of potentially dangerous objects like viruses or explosives. Those methods are based on the prophylaxis irradiation and post irradiation IR-control.
  • Filters with Optical Isotropic Wavelength 
    SYRBU, N. N.; DOROGAN, A.; STAMOV, I. (Technical University of Moldova, 2009)
    In the present work it is presented the construction of Band-Pass-Mode Filter and Band –Elimination-Mode Filter used for decreasing the track of the excitation lines 536.7nm and 632.8nm, respectively, for Ar+ and He-Ne ...
  • Supraconductibilitate şi feromagnetism în bicristale şi tricristale ale aliajelor Bi-Sb 
    MUNTYANU, F. M.; CHISTOL, V. (Technical University of Moldova, 2009)
    Au fost studiate proprietăţile bicristalelor şi tricristalelor aliajelor Bi1-x - Sbx (x≤0.2) în intervalul de temperaturi (1.8 -100) K şi câmpuri magnetice de până la 70 kOe. S-a stabilit că la temperaturi joase bicristalele ...
  • High quality Nb and Nb/CuNi nanolayers for superconducting spintronics 
    ZDRAVKOV, V.; MORARI, R.; ANTROPOV, E.; PREPELITSA, A.; SOCROVISCIUC, A.; SURDU, A.; COJOCARU, V.; SIDORENKO, A. (Technical University of Moldova, 2009)
    Advanced technological process for preparation of high quality superconducting Nb and ferromagnetic CuNi -alloy nanolayers of large area (~200 mm2) is developed based on DC-magnetron sputtering. Homogeneity and proper ...
  • Effect of temperature on the photodissolution of silver in arsenic trisulfide 
    TSIULYANU, Dumitru; STRATAN, Ion (Technical University of Moldova, 2009)
    The influence of temperature on the photodissolution of Ag into glassy As2S3 films has beenstudied by monitoring the changes that occurs in transmission of weakly absorbed broadband light. It wasshown that besides of a low ...
  • Photoluminescence of ZnTe nanowires prepared by electrochemical etching of bulk ZnTe 
    MONAICO, E.; COSEAC, V.; URSAKI, V.V.; SYRBU, N.N.; TIGINYANU, I.M. (Technical University of Moldova, 2009)
    We demonstrate the preparation of ZnTe nanowires with the diameter of 50 nm from bulk p-type ZnTe by means of electrochemical treatment in a pulse regime. The nanowires demonstrate photoluminescence characteristics identical ...
  • Electrochemically Nanostructured ZnSe for Photonic and Optoelectronic Applications 
    TIGINYANU, I.M.; MONAICO, E.; URSAKI, V.V.; COLIBABA, G.; NEDEOGLO, D.D.; LEPORDA, N. (Technical University of Moldova, 2009)
    In this paper we demonstrate the possibility to control the conductivity of ZnSe in a degree acceptable for electrochemical nanostructuring. Technological methods for the preparation of nanostructures and composite materials ...
  • Exciton Spectra of CuAlS2 and CuAlSe2 Crystals 
    SYRBU, N. N.; URSAKI, V. V.; DOROGAN, A.; GALBIC, I.; KORZUN, B. V.; FADZEYEVA, A. A.; MIANZELEN, R. R. (Technical University of Moldova, 2009)
    The reflectivity exciton spectra are researched for CuAlS2 and CuAlSe2 crystals at 10K. The chipping values were calculated caused by the crystal field and spin-orbital interaction of valence zones. There have been estimated ...
  • Zinc Oxide – The Material of Future Optoelectronics and Photonics 
    TIGINYANU, I.M.; URSAKI, V.V.; RUSU, E.V. (Technical University of Moldova, 2009)
    In this review paper we present new possibilities for nanostructuring of ZnO grown by MOCVD, CVD and electrochemical deposition. The prospects for future applications of ZnO are evaluated on the basis of laser developments. ...

Search DSpace


Browse

My Account