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Browsing 2017 by Issue Date

Browsing 2017 by Issue Date

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  • Critical current of MgB2 microbriges 
    SURDU, A.; SOKROVISCIUC, A.; ANTROPOV, E.; MIKHAILOV, M.; SIVAKOV, A.; POKHILA, A.; SIDORENKO, A. (Technical University of Moldova, 2012)
    In the present work we study the peculiarities of the critical current of MgB2 extracted from current-voltage (I-V) characteristics. The (I-V) characteristics of two parallel connected MgB2 microbriges (of 3 µm width and ...
  • Fabrication and characterization of flexible composite material based on Aerographite/InP micro-nanostructures 
    PLESCO, Irina; STROBEL, Julian; SCHÜTT, Fabian; GORCEAC, Leonid; CINIC, Boris; HIMCINSCHI, Cameliu; MISHRA, Yogendra Kumar; KIENLE, Lorenz; ADELUNG, Rainer; TIGINYANU, Ion (Technical University of Moldova, 2017)
    The goal of this work is to extend the class of flexible hybrid nanomaterials based on aerographite scaffolds. For this purpose, we developed the technological conditions for the deposition of InP:Zn micro- and nanostructures ...
  • Pulsed Electroplating of Metal Nanoparticles form DODUCO Electrolytes 
    MONAICO, Eduard; BRINCOVEANU, Oana; MESTERCA, Raluca; URSAKI, Veaceslav; PRODANA, Mariana; ENACHESCU, Marius; TIGINYANU, Ion (Technical University of Moldova, 2017)
    The mechanisms of Au deposition on InP porous substrates during a pulsed electroplating process are investigated by means of Topography imaging and Current Mapping measurements. The obtained results confirm the formation ...
  • Pd-doped ZnO nanostructured films for multifunctional applications 
    POSTICA, Vasile; HOPPE, Mathias; ADELUNG, Rainer; PAUPORTÉ, Thierry; ABABII, Nicolai; TROFIM, Viorel; SONTEA, Victor; LUPAN, Oleg (Technical University of Moldova, 2017)
    In this work Pd-doped ZnO (ZnO:Pd) nanostructured films were deposited on pre-cleaned glass substrates via a synthesis from chemical solutions (SCS) approach from aqueous baths. The post-rowth thermal annealing, namely ...
  • Influence of TiO2 Ultra-Thin Films on Gas Sensing Properties of CuO:Zn 
    ABABII, Nicolai; REIMER, Tim; POSTICA, Vasile; HOPPE, Mathias; CHEMNITZ, Steffen; SONTEA, Victor; BENECKE, Wolfgang; ADELUNG, Rainer; LUPAN, Oleg (Technical University of Moldova, 2017)
    Copper oxide is a p-type metal oxide with remarkable optical, electrical, thermal and sensing properties. The oxidation of Cu2O to CuO can be performed by thermal annealing at relatively low temperatures. The present study ...
  • Hydrogen detection by individual Pd-modified ZnO nanowire 
    LUPAN, Oleg; PAUPORTÉ, Thierry; POSTICA, Vasile; VIANA, Bruno; ADELUNG, Rainer; CHOW, Lee; TIGINYANU, Ion (Technical University of Moldova, 2017)
    In this work an individual Pd-modified ZnO nanowire (Pd/ZnO NW) was integrated into a nanosensor device using focused ion beam (FIB)/scanning electron microscopy (SEM) system. The Pd/ZnO arrays were synthesized by ...
  • Gas sensors based on optical fiber coated with nanocrystalline TiO2 and nanofibrous ZnO 
    GHIMPU, Lidia; PLESCO, Irina; URSACHI, Veaceslav; TIGINYANU, Ion; ZARRELLI, Mauro; ZOTTI, Aldobeneddetto; BORRIELLO, Anna (Technical University of Moldova, 2017)
    The paper is divided into two main sections: first, we report on magnetron sputtering of zinc oxide and titanium dioxide; second, the results of the investigation of the morphology and sensing characteristics of the optical ...
  • Термоэлектрическая эффективность полупроводниковых нитей Bi1-xSbx 
    ПОПОВ, Иван; БОДЮЛ, Павел; МОЛОШНИК, Евгений; ПАРА, Георгий; ИСТРАТИЙ, Евгений (Technical University of Moldova, 2017)
    В работе представлены исследования температурных зависимостей термоэлектрических свойств монокристаллических нитей Bi1-xSbx в стеклянной оболочке различных составов с диаметром 1,5 мкм. Монокристаллические нити Bi1-xSbx в ...
  • Influence of Metal Deposition on Electrochemical Impedance Spectra of Porous GaP and GaN Semiconductors 
    ANICAI, Liana; GOLGOVICI, Florentina; MONAICO, Eduard; URSAKI, Veaceslav; PRODANA, Mariana; ENACHESCU, Marius; TIGINYANU, Ion (Technical University of Moldova, 2017)
    A comparative analysis of electrochemical impedance spectroscopy (EIS) characterization is performed in porous GaN and GaP templates with and without metal nanostructured layers deposited by pulsed electroplating. The ...
  • Radiative Transitions in Sm2+ Doped ZnAl2Se4 and KCl Crystals 
    TIRON, Andrew; ZALAMAI, Victor; RUSU, Emil; SYRBU, Nicolae; BEJAN, Nicolae (Technical University of Moldova, 2017)
    Photoluminescence spectra of ZnAl2Se4:Sm2+ and KCl:Sm2+ due to the processes of charge carriers recombination from levels 5Dj,5Lj,5Gj and 5Hj (4f55d1) on levels 7Fj of samarium ions were investigated. The broad photoluminescence ...
  • Sincronizarea laserelor semiconductoare cu mediu activ puncte cuantice 
    OLOINIC, Tatiana; PÎRŢAC, Constantin; RUSU, Spiridon; TRONCIU, Vasile (Technical University of Moldova, 2017)
    În această lucrare sunt cercetate proprietățile de sincronizare ale laserelor cu puncte cuantice sub influența feedbackului optic extern de la 4 cavități. S-a demonstrat că datorită influenței unui astfel de feedback, în ...
  • Fiber Optic Speckle Interferometry for Intrusion Monitoring Systems 
    CULEAC, I.; BORSCIOV, V.; VERLAN, V.; COJOCARU, I.; IOVU, M.; CIORNEA, V.; BUZDUGAN, A. (Technical University of Moldova, 2017)
    A speckle based fiber-optic technique for perimeter intrusion-monitoring systems is discussed. The method is based on the effect of variation of the speckle pattern in the far-field of a multimode fiber. Computer processing ...
  • Dezvoltarea tehnologiilor satelitare în cadrul Universităţii Tehnice a Moldovei 
    BOSTAN, Ion; BOSTAN, Viorel; SECRIERU, Nicolae; CANDRAMAN, Sergiu; MARGARINT, Andrei (Technical University of Moldova, 2017)
    În majoritatea țărilor Europene preocupările în domeniul tehnologiilor spațiale câștigă tot mai mult teren, atrăgând în sfera cercetării noi adepți, în special în rândul tinerilor cercetători. În acest context, în cadrul ...
  • Nanosatellite TUMnanoSat II for tracking and measure of the orbital parameters and decline 
    SECRIERU, Nicolae; LEVINEŢ, Nicolae; MELNIC, Vladimir; CANDRAMAN, Sergiu; ILCO, Valentin; GIRSCAN, Adrian; MARGARINT, Andrei (Technical University of Moldova, 2017)
    This paper reflects the development of the TUMnanoSat II nanosatellite at the TUM Space Technology Center with a special research and educational mission - determining the decline of nanosatellite orbit using the optical ...
  • Remote control and monitoring of irrigation process operation and control system architecture 
    SECRIERU, Nicolae; LEVINEŢ, Nicolae; CANDRAMAN, Sergiu; ILCO, Valentin; GIRSCAN, Adrian; MARGARINT, Andrei (Technical University of Moldova, 2017)
    This paper reflects the development results of the irrigation processes automating platform for the plantations, which can be very user-friendly to optimize these processes and minimize irrigation costs and therefore serves ...
  • Resonance Raman Scattering and Excitons Optical Orientation in CuGaSe2 Crystals 
    ZALAMAI, Victor; SYRBU, Nicolae; Tiron, Andrew; DOROGAN, Valerian (Technical University of Moldova, 2017)
    Resonance Raman and luminescence spectra of CuGaSe2 crystals measured at 9 K and excited by He-Ne (632.8 nm) and Ar+ (514.5 nm) lasers were investigated. Excitons parameters in the region of A, B and C excitonic series ...
  • Particularităţile proiectării reţelei de televiziune digitală terestră DVBT-2 în Republica Moldova 
    BELENIUC, Cristina; URSACHI, Tatiana; AVRAM, Ion (Technical University of Moldova, 2017)
    DBV-T (Digital Video Broadcasting - Terrestrial) is the terrestrial digital transmission system specified in the DVB standard and offers the ideal solution for direct transmission of televisions programs to viewers. DVB-T ...
  • Metodologia determinarii nivelului de radiaţie emis de echipamentele radio. SAR (SAR – Specific Absorbtion Rate) 
    SOROCHIN, Serafima; LACHI, Arina; MOROZAN, Pavel; SAVA, Lilia (Technical University of Moldova, 2017)
    Telefoanele mobile şi-au început existenţa ca o metodă de comunicare destinată uzului militar şi cînd au început să fie folosite şi de populaţia civilă nu au existat studii de sănătate în privinţa efectelor lor.Însă, ...
  • Modelarea sistemelor orientate pe servicii prin RPS Reconfigurabile cu trăsături dinamice 
    GUȚULEAC, Emilian; ZAPOROJAN, Sergiu; GÎRLEANU, Ion; SCLIFOS, Alexei; IAVORSCHI, Inga (Technical University of Moldova, 2017)
    În lucrare sunt definite rețele Petri stocastice (RPS) reconfigurabile marcaj – controlabile cu trăsături dinamice (ReRPST), care permit de a descrie formal, în mod compact și flexibil, funcţionarea sistemelor orientate ...
  • Metodologia determinării nivelului radiaţiei emis de telefoanele mobile 
    SOROCHIN, Serafima; MOROZAN, Pavel; LACHI, Arina; SAVA, Lilia (Technical University of Moldova, 2017)
    Telefoanele mobile şi-au început existenţa ca o metodă de comunicare destinată uzului militar şi cînd au început să fie folosite şi de populaţia civilă nu au existat studii de sănătate în privinţa efectelor lor. Însă, ...

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