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Browsing Facultatea Calculatoare, Informatică şi Microelectronică by Author "URSAKI, V."

Browsing Facultatea Calculatoare, Informatică şi Microelectronică by Author "URSAKI, V."

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  • Characterization of TiO2 Nanoparticles and ZnO/TiO2 Composite Obtained by Hydrothermal Method 
    RUSU, E.; URSAKI, V.; GUTUL, T.; VLAZAN, P.; SIMINEL, A. (Tehnica UTM, 2015)
    ZnO and TiO2 nanoparticles as well as ZnO/TiO2 core/shell structures have been prepared by hydrothermal method and characterized by means of scanning electron microscopy, XRD and EDX analysis, FTIR and luminescence ...
  • The Impact of Porosification Upon Luminescence of HVPE Grown GaN and the Influence of the Porous Layer Upon the Quality of the Overgrown GaN Film 
    BRANISTE, T.; POPA, V.; MARTIN, D.; CARLIN, J.-F.; URSAKI, V.; GRANDJEAN, N.; TIGINYANU, I. (Tehnica UTM, 2015)
    In this paper, we show that the quality of the porous layers produced by photoelectrochemical (PEC) etching of HVPE GaN in oxalic acid is better than that of the initial material, and the quality of GaN films overgrown on ...
  • Mechanisms of enhancement of nonlinear optical response in nanostructured III-V compounds 
    SERGENTU, V.; KRAVETSKY, I.; URSAKI, V.; SIRBU, L.; VOLCIUC, O.; POPA, V.; TIGINYANU, I. M.; BOYD, Robert W. (Technical University of Moldova, 2005)
    The goal of this paper is to propose a new mechanism of nonlinear optical properties enhancement in nanostructured semiconductors based on the concept of photonic crystals (PC). The photonic crystal is usually formed as a ...
  • Nanoperforated Indium Phosphide for Terahertz Imaging Bio-applications 
    ESINENCO, D.; SIRBU, L.; VODA, I.; GHIMPU, L.; MULLER, R.; VOICU, R.; DANILA, M.; LECA, A.; DASCALU, T.; TIGINYANU, I. M.; URSAKI, V. (Technical University of Moldova, 2011)
    We demonstrate the fabrication of thin InP membranes with porous compact packed structure that have been cut during electrochemical etching in the same anodic process. Besides, we show the possibility of pore filling with ...
  • Porous vs. Magnetron RF Sputtering Of InP for Portable THz-TDS in Pharmaceutical and Medical Applications 
    SIRBU, L.; DANILA, M.; MULLER, R.; GHIMPU, L.; DOBLETBAEV, R.; DASCALU, T.; GRIGORE (SANDU), O.; SARUA, A.; URSAKI, V. (Technical University of Moldova, 2013)
    We developed a combination of technology for deposition contacts/wires upon nanoporous InP thin film structures and RF sputtering InP films. Indium phosphide (InP) films were deposited onto glass substrate using RF magnetron ...
  • Preparation and characterization of gap colloidal nanoparticles and films 
    PYSHKIN, S.; RUSU, E.; IACOB, M.; URSAKI, V.; GUTSUL, T.; BALLATO, J. (Tehnica UTM, 2013)
    In this communication, we present results of investigations of the influence of technological conditions upon the properties of GaP nanoparticles produced by using a new precursor as a source of Ga atoms. The obtained ...
  • Superhydrophobic Polytetrafluoroethylene Coated Micro-fluidic Chip for Bio-applications Integrated With THz Spectroscopy Technology 
    SIRBU, L.; GHIMPU, L.; MULLER, R.; VOICU, R.; DASCALU, T.; SERGENTU, V.; DOBLETBAEV, R.; URSAKI, V. (Technical University of Moldova, 2013)
    The hydrophobic properties were achieved for RF-sputtered ultra-thin polytetrafluoroethylene (PTFE) films deposited on silicon surfaces. In our investigation, super-hydrophobic surfaces with water contact angles higher ...
  • Synthesis of Colloidal InP Nanocrystal Quantum Dots 
    SIRBU, L.; GUTUL, T.; TODOSICIUC, A.; DANILA, M.; MULLER, R.; SARUA, A.; WEBSTER, R.; TIGINYANU, I. M.; URSAKI, V. (Technical University of Moldova, 2013)
    InP nanodots with the diameter of 4−10 nm were synthesized using sol-gel method. The nanodot dimensions were obtained using TEM, and we found the d(111) spacing to be 0.328nm which agrees within 3% of the literature value. ...
  • Thin-film cadmium telluride solar cells 
    GHIMPU, L.; ANTONIUC, C.; POTLOG, T.; TIGINYANU, I.; URSAKI, V. (Technical University of Moldova, 2005)
    This work investigates the photovoltaic properties of CdS/CdTe thin-film solar cells. CdS and CdTe were deposited by the close-space-sublimation method on glass plates with an area of 2x2 cm2 covered with a SnO2 layer. ...

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