Browsing by Author "Luchian, Efimia"

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    CRYSTALLINE STRUCTURE, SURFACE MORPHOLOGY AND OPTICAL PROPERTIES OF NANOLAMELLAR COMPOSITES OBTAINED BY INTERCALATION OF InSe WITH Cd
    (2015) Untila, Dumitru; Caraman, Iuliana; Evtodiev, Igor; Canțer, Valeriu; Spalatu, Nicolae; Leontie, Liviu; Dmitroglo, Liliana; Luchian, Efimia
    A material composed of InSe and CdSe crystallites was obtained by heat treatment at 753K of InSe single crystalline plates in Cd vapour for 3÷24 hours. The average diameters of CdSe and InSe crystallites determined from diffraction lines analysis are respectively equal to 20 nm and 22 nm. The photoluminescence spectra at 300K and 80K of composite decompose well into two Gaussian curves, one is in good correlation with the photoluminescence of CdSe crystals and the other is shifted to higher energies than the width of the band gap of CdSe crystals.
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    INSTRUMENTE INTERACTIVE DE MĂSURĂ PENTRU ÎNVĂŢĂMÂNTUL MODERN
    (CEP USM, 2014) Luchian, Efimia; Evtodiev, Silvia; Rotaru, Irina; Untila, Dumitru
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    LABORATOR DE ŞTIINŢE INTEGRATE DIDACT VEGA PENTRU ÎNVĂŢĂMÂNTUL PREUNIVERSITAR
    (Tipografia "CentroGrafic" ,Cahul, 2015) Evtodiev, Silvia; Luchian, Efimia; Evtodiev, Igor; Untilă, Dumitru; Caraman, Mihail
    Experimental investigations are a set of analysis techniques and methods, very important for today's society and in particularly for undergraduate and graduate education. To achieve the objectives and purpose in the most efficient way, in this paper were chosen solutions offered by the PASCO company (Didact Vega), whose equipments offers a wide range of procedures for conducting investigations. SPARKscience includes reading, data analysis and real time processing software, SPARKvue and capstone. Data acquisition system includes over a thousand PASPORT sensors for physics, chemistry, biology and environmental engineering. The SPARK mobile system can be used for experimental investigations both in laboratory and in the field. Integrated Science Laboratory contains a broad and well-structured base of labs (SPARKlab) offers to pupil/student/teacher the posibility to increase the level, volume and quality of experimental investigations in the field of Integrated Sciences .
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    STRUCTURA ŞI FOTOLUMINESCENŢA COMPOZITELOR OBŢINUTE PRIN TRATAMENT TERMIC ÎN VAPORI DE CD A MONOCRISTALELOR DE GA2S3
    (CEP USM, 2014) Vatavu, Elmira; Caraman, Iuliana; Evtodiev, Igor; Caraman, Mihail; Luchian, Efimia; Untila, Dumitru
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    STUDIUL STRUCTURII ŞI MECANISME DE GENERARE-RECOMBINARE ÎN COMPOZITE NANOLAMELARE OBŢINUTE PRIN INTERCALAREA CU CD A MONOCRISTALELOR GASE ŞI GASE:EU
    (CEP USM, 2014) Untila, Dumitru; Dmitrolo, Liliana; Evtodiev, Igor; Caraman, Iuliana; Luchian, Efimia; Rotaru, Irina; Gorobcic, Tatiana