Facultatea Electronică şi Telecomunicaţii: Recent submissions

Now showing items 961-980 of 1268

Nanocrystalline and amorphous tellurium films for gas sensing applications

TSIULYANU, D.; MOCREAC, O.; AFANASIEV, A. (Tehnica UTM, 2019)

Microstructural peculiarities and gas (NO2) sensing properties of tellurium thin films dependent on the technological procedures of their physical grow are presented. The fabrication of the films was provided using thermal ...
Influence of corona discharge on photoinduced modification of optical characteristic of Cu–As2Se3 thin film srructures

NASTAS, A.M.; IOVU, M.S. (Tehnica UTM, 2019)

It was established [1], that application of negative corona discharge during recording of optical holographic diffraction gratings in Cu-As2Se3 thin film structures, in comparison of positive corona discharge, increase the ...
Electron microscopy studies of the crystallization of Ge2Sb2Te5 thin films for phase change memory

SYBINA, YU.; YAKUBOV, A.; LAZARENKO, P.; VOROBYOV, YU.; BABICH, A.,; BORGARDT, N.; KOZYUKHIN, S.; SHERCHENKOV, A. (Tehnica UTM, 2019)

The Ge2Sb2Te5 (GST225) thin films are widely used in the nonvolatile phase change memory (PCM) [1]. The crystallization process is the slowest part of a PCM operation, thus limiting the overall performance of the PCM ...
Contact resistance and mechanical property measurements for the Ge2Sb2Te5 thin films

YAKUBOV, A.; SHERCHENKOV, A.; LAZARENKO, P.; BDIKIN, I.; BABICH, A.; TEREKHOV, D. (Tehnica UTM, 2019)

Currently, Ge2Sb2Te5 (GST225) is widely investigated as material for non-volatile phase change memory. However, for the successful implementation of the multi-layered memory cell, it is necessary to understand peculiarities ...
Photoconductivity of chalcogenide thin film heterostructures

IASENIUC, O.; IOVU, M. (Tehnica UTM, 2019)

Arsenic selenide and sulfide glasses are well known as high photosensitive materials with a wide application in photonics, optoelectronics and information storage systems. In the present paper the experimental results ...
Multiple switching effects in GeSbTe thin-films

FEFELOV, S.; KAZAKOVA, L.; BOGOSLOVSKIY, N.; LAZARENKO, P. (Tehnica UTM, 2019)

The switching and memory effects in chalcogenide glassy semiconductors are actively studied both experimentally and theoretically during the last years. Possible mechanisms of these effects are widely discussed. In this ...
Composition- and electrical field-dependent surface relief recording in amorphous chalcogenide layers and structures

MOLNAR, S.; BOHDAN, R.; NEMEC, P.; BONYAR, A.; REZNIK, A.; KOKENYESI, S. (Tehnica UTM, 2019)

Optical recording processes, formation of amplitude-phase optical and even geometrical reliefs in amorphous chalcogenide layers are rather well known. In spite of established compositional, illumination, temperature ...
Surface relief formation in Yb doped As2S3–Se nanomultilayer structures

PAIUK, O.; MESHALKIN, A.; STRONSKI, A.; ACHIMOVA, E.; ABASHKIN, V.; PRISACAR, A.; TRIDUH, G.; KORCHOVYI, A.; OLEKSENKO, P. (Tehnica UTM, 2019)

Chalcogenide glasses and films are promising materials for application in optoelectronics and photonics. Nanomultilayer structures based on chalcogenide glasses attract much attention due to their property of direct ...
Resonance Raman scattering and entanglement in transition-metal dichalcogenide semiconductor MOS2 QDS

NISTREANU, A. (Tehnica UTM, 2019)

Molybdenum disulfide (MoS2) is widely used in optoelectronic devices due to its properties like high mobility, effective luminescence and strong binding energy. When 2D TMDs are reduced to 0D (zero dimensional) then we ...
Optical properties of CuInSe2 nanocrystals prepared by electrical discharge induced chemistry in solution

TARASENKO, N.; NEVAR, A.; TARASENKA, N.; SVITSIANKOU, I.; PAULOUSKI, V. (Tehnica UTM, 2019)

The paper discusses the results of characterization of CuInSe2 (CIS) nanocrystals (NCs) synthesized by plasma treatment of a stoichiometric mixture of copper, indium, and selenium micropowders in an electric discharge ...
Switching effect properties on Sn-doped Sb70Te30 thin films

ROCCA, J. A.; RODRÍGUEZ, O. C.; UREÑA, M. A.; BILOVOL, V.; FONTANA, M. (Tehnica UTM, 2019)

Ge-Sb-Te phase-change materials in compositions close to Ge2Sb2Te5 and doped with Sn have been proposed to improve performance of phase-change memories (PCM) [1]. In a previous work we found that Sb70Te30 thin films show ...
Diffraction optical elements digital recorded in nanomultilayers As2S3- Se

ACHIMOVA, E.; ABASKIN, V.; PRISACAR, A.; TRIDUH, G.; MESHALKIN, A. (Tehnica UTM, 2019)

It is well known that films of chalcogenide glasses are an appropriate material for fabrication of diffraction optical elements (DOE) which manifest high resolution and transparency in the wide range of spectrum. However, ...
The similarity between two-dimensional magnetoexcitons and the excitons in transition metal dichalcogenides

MOSKALENKO, S.A.; PODLESNY, I.V.; ZUBAC, I.A. (Tehnica UTM, 2019)

The exchange e-h Coulomb scattering takes place with the annihilation and the creation of the e-h pairs with the resultant electronic charges equal to zero. During the direct Coulomb scattering the electron and a hole ...
Effect of indium and tin ion implantations on the properties of Ge2Sb2Te5 thin films

LAZARENKO, P.; SITNIKOV, A.; KOZYUKHIN, S.; SELEZNEV, D.; KOZLOV, A.; YAKUBOV, A.; SHERCHENKOV, A.; VOROBYOV, YU.; BOYTSOVA, O.; KIRILENKO, E.; KULEVOY, T. (Tehnica UTM, 2019)

One of the most perspective electrical and optical non-volatile memory type is phase change memory (PCM) based on the chalcogenide materials, particularly on GST225 [1]. Introduction of dopants is an effective method for ...
Lucrări de laborator asistate de calculator. Studierea legii conservării energiei mecanice la rostogolirea unei bile pe un uluc înclinat

RUSU, Al.; PÎRŢAC, C.; GUTIUM, S. (Technical University of Moldova, 2015)

We propose a piece of software specifically designed for the study of conservation of mechanical energy in the form of a rolling ball on an inclined groove with a specific installation using a computer interfaced digital ...
Lucrări de laborator asistate de calculator. Determinarea căldurii specifice a lichidelor şi solidelor

RUSU, Al.; PÎRŢAC, C.; GUTIUM, S. (Technical University of Moldova, 2015)

We propose a method to determine the specific heat of liquids and solids, which involves the heating of the substance under investigation in an electrical calorimeter and collecting data points using a digital thermometer ...
Învăţarea prin cercetare a legii conservării momentului cinetic

RUSU, Al.; GUTIUM, S.; POPOVICI, A. (Technical University of Moldova, 2015)

This article presents a laboratory experiment that proves the angular momentum law of conservation in physics. The method consists of identifying the linear relationships between measured physical quantities, which are ...
Calculul indicelui de refracție din spectrele de interferență. Implementarea în procesul de studiu

PARVAN, V. (Technical University of Moldova, 2015)

Specified method has a high educational value due to possibility to process obtained data in specialized application. This application allows executing mathematical operations with data arrays, mathematical analysis of ...
Instrumente de procesare a limbajului natural pentru studierea limbilor străine

BOBICEV, V.; CARCEA, L. (Technical University of Moldova, 2015)

This paper presents an online concordancer that was created at the Applied Informatics department for teaching and learning of French language. It also contains examples of possible activities for teachers and students ...
Running OER MOOC University Courses by Using Moodle Platform

ADASCALITEI, Adrian; SECRIERU, Nicolae; TODOS, Petru (Technical University of Moldova, 2015)

This paper describes an i-pedagogically effective sequence of topics and methods for blended learning electric circuit analysis in a MOOC (Massive Open Online Courses) structure. We show how to teach using the web, Open ...

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