IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Articole din publicaţii internaţionale by Subject "impedance"

Browsing Articole din publicaţii internaţionale by Subject "impedance"

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  • Effect of aging and temperature on alternating current conductivity of tellurium thin films 
    TSIULYANU, D.; MARIAN, T.; TIULEANU, A.; LIESS, H.-D.; EISELE, I. (Elsevier, 2009)
    The impedance spectra of tellurium films with interdigital platinum electrodes were investigated in air at temperatures between 10 and 50 °C. Cole–Cole analysis made it possible to assess time constants, resistance, and ...
  • Impedance Characterization of Gas Sensitive Chalcogenide Films 
    TSIULYANU, Dumitru; CIOBANU, Marina; MOCREAC, Olga (Springer Nature Switzerland, 2018)
    The gas sensing performance of chalcogenide thin films, investigated by the method of impedance spectroscopy is reported and discussed in order to assess their use in future gas sensors operating at room temperature.
  • A method of virtual image for determination of negative refraction index of a nanomedium 
    SERGENTU, V.; URSAKI, V. (Romanian Academy Publishing House, 2017)
    In this paper we propose a method for measuring the negative refraction index of films of optically transparent materials. The method is based on recording the direction of propagation and the shifting of the ray reflected ...
  • Millimeter-wave receiver based on a folded dipole antenna and Schottky diode for maximum power transfer 
    MONTERO-de-PAZ, J.; UGARTE-MUÑOZ, E.; GARCIA-MUÑOZ, L. E .; SEGOVIA-VARGAS, D.; SCHOENHERR, D.; OPREA, I.; AMRHEIN, A.; COJOCARI, O.; HARTNAGEL, H. L. (IEEE, 2012)
    In this article a millimeter-wave (mm-wave) receiver based on a folded dipole antenna, zero bias Schottky diode and silicon (Si) lens is presented. The antenna is designed in such a way that its input impedance is equal ...
  • Quasi-Optical Schottky Barrier Diode Detector for mmWave/sub-THz Wireless Communication 
    MUHSIN, Ali; GUZMAN, Robinson Cruzoe; RIVERA-LAVADO, Alejandro; COJOCARI, Oleg; GARCIA-MUFIOZ, Luis Enrique; CARPINTERO, Guillermo (IEEE, 2018)
    We report on the development of a compact quasioptical zero-bias Schottky barrier diode (QO-SBD) envelope detector for mmWave/sub-THz frequencies. The detector consists of a Schottky diode mounted on a self-complementary ...
  • Self-induced oscillation of the macropore diameter in n-type silicon 
    COJOCARU, Ala; CARSTENSEN, Jürgen; LEISNER, Malte; FÖLL, Helmut; TIGINYANU, Ion (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2009)
    Electrochemical etching of n-type silicon in viscous-electrolyte containing HF for macropore formation has been employed to obtain deep pores at high growth rates. Under certain conditions, a new kind of macropore growth ...
  • Work function and AC operating gas-sensitive films based on quaternary chalcogenides 
    TSIULYANU, D.; CIOBANU, M.; LIESS, H.-D. (WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim, 2016)
    A study of quaternary alloys of As–S–Ge–Te was performed in order to assess their use in future gas sensors operating at room temperature. To elucidate the effect of tellurium, the quaternary compositions As2Te13Ge8S3 and ...

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