Articole ştiinţifice: Recent submissions

  • New organic luminophore compounds-polymer nanocomposites: technology and absorbance 
    VERLAN, V.; IOVU, M.; CULEAC, I.; POPUSHOI, A.; DRAGALINA, G.; ROBU, S.; BARBĂ, N.; MALAHOV, L. (SPIE, Society of Photo-Optical Instrumentation Engineers, 2010)
    New light-emitting layers of nanocomposites on polymer base have been obtained. As polymeric matrices the copolymers of styrene and butilmetacrylate in the ratio (1:1) have been used. As organic luminophore compounds from ...
  • New luminescent compounds based on chalcogenides and organic materials 
    IOVU, M. S.; ANDRIESH, A. M.; VERLAN, V. I.; BUZURNIUC, S. A.; CULEAC, I. P.; NISTOR, YU. H.; ZUBAREVA, V. (National Institute of Optoelectronics, Romania, 2009)
    Data concerning fabrication and luminescent properties of new composite materials on the base of organic coordination compounds of Eu(III) (Eu(TTA)3H2O, Eu(TTA)3Phen or Eu(DBM)3Phen dispersed in SBMA copolymer are presented. ...
  • New composite materials for optoelectronic applications 
    IOVU, M. S.; BUZURNIUC, S. A.; VERLAN, V. I.; CULEAC, I. P.; NISTOR, Yu. H. (SPIE, Society of Photo-Optical Instrumentation Engineers, 2009)
    The problem of obtaining low cost but efficient luminescent materials is still actually. Data concerning fabrication and luminescent properties of new composite materials on the base of thenoyltrifluoroacetone (TTA) of ...
  • The study of some luminescent materials on the basis of organic copolymers grafted with isothiocyanatochalcones and phthalocyanine derivatives 
    ROBU, Şt.; DRAGALINA, G.; POPUŞOI, A.; MITCOV, D.; BARBĂ, N.; ANDRIEŞ, A.; CULEAC, I.; IOVU, M.; NISTOR, Iu. (Institutul de Fizică Aplicată al AŞM, 2010)
    Novel polymeric materials grafted with chalcone and phthalocyanine derivatives were synthesized and their luminescent properties were investigated.
  • Managing the luminescence efficiency of the organic compounds of europium(III) through preparation technology 
    BORDIAN, Olga; VERLAN, Victor; CULEAC, Ion; BULHAC, Ion; ZUBAREV, Vera (SPIE, Society of Photo-Optical Instrumentation Engineers, 2020)
    A series of coordination organic compounds based on the trivalent Eu3+ ion were synthesized and optimized: Eu(o-MBA)3phen, Eu(DBM)3(Ph3PO)1•H2O and Eu(TTA)3(Ph3PO)2. The efficiency of the photoluminescence (PL) emission ...
  • Luminophore organic nanocomposites on the base of polymer and isothiocianatohalconic compounds 
    VERLAN, V.; ANDRIESH, A.; IOVU, M.; BORDIAN, O.; BUZURNIUC, S.; NISTOR, Yu.; CULEAC, I.; POPUŞOI, A.; DRAGALIN, G.; BARBĂ, N. (Institutul de Fizică Aplicată al AŞM, 2012)
    The paper presents the results of technology for obtaining nanocomposite thin layers (NC) of organic luminophore compounds (OLC), particularly, those prepared by the sol-gel method.
  • Kinetics of photoinduced absorption in chalcogenide-glass fibers 
    ANDRIESH, A. M.; BINCHEVICI, V. A.; COPACI, T. N.; CULEAC, I. P.; ENACHI, N. A.; LOGHIN, V. M. (SPIE, Society of Photo-Optical Instrumentation Engineers, 1995)
    Experimental and theoretical results are presented for the kinetics of photoinduced absorption in chalcogenide glass fibres. Photoinduced absorption measurements were carried out both at room temperature as well as at ...
  • IR sensing by fiber-optic speckle based interferometer 
    CULEAC, I. P.; NISTOR, Iu. H.; ANDRIESH, A. M.; IOVU, M. S.; ZAGONENCO, V. F. (Institutul de Fizică Aplicată al AŞM, 2012)
    In the previous papers we presented a speckle-based fiber optic method for registration of low intensity infrared radiation, which is based on the interference of propagation modes in the far field of a multimode fiber. ...
  • Infrared Reflectance Investigation of the Structure of xSb2S3.(l-x)As2S3 Glasses 
    KAPOUTSIS, J. A.; KAMITSOS, E. I.; CULEAC, I. P.; IOVU, M. S. (Springer Nature Switzerland, 1997)
    Chalcogenide glasses have attracted much attention over the years in light of their technological applications, including infrared transmitting optical elements, acoustooptic and memory switching devices, and materials ...
  • Generation of coherent phonon pulses by hot electrons in non-crystalline semiconductors 
    ANDRIESH, A. M.; ENAKI, N. A.; KOROLI, V. I.; CULEAC, I. P.; CIORNEA, V. I. (National Institute of Optoelectronics, Romania, 2000)
    We study the cooperative generation of phonon pulses in semiconductors by groups of inverted equidistant multilevel coupled excitations (electrons, excitons). Such equidistant systems take place in chalcogenide glasses ...
  • Fluorescence properties of As2S3 glass doped with rare-earth elements 
    IOVU, M.; ANDRIESH, A.; CULEAC, I. (National Institute of Optoelectronics, Romania, 2005)
    Chalcogenide glasses doped with various rare-earth ions are extensively studied as potential materials for fiber optic amplifiers operating at 1.3 and 1.5 µm telecommunication windows. The experimental results on optical ...
  • Fiber optic speckle based interferometry for IR radiation sensing and intrusion monitoring systems 
    CULEAC, I. P.; NISTOR, Iu. H.; IOVU, M. S.; ANDRIESH, A. M. (Institutul de Fizică Aplicată al AŞM, 2010)
    In the previous paper we have reported a fiber optic method for registration of low intensity infrared radiation based on the effect of interference of propagation modes in the far field of a multimode fiber. In this paper ...
  • Fiber Optic Interferometric Method for Registration of IR Radiation 
    CULEAC, Ion; NISTOR, I.; IOVU, M.; ANDRIESH, A. (Springer Nature Switzerland, 2012)
    A high sensitivity speckle based fi ber-optic method for registration of low intensity IR radiation is described. The method is based on the effect of variation of the speckle pattern in the far-fi eld of a multimode fi ...
  • Fiber—optic displacement sensor 
    ANDRIESH, A. M.; CULEAC, I. P.; BINCHEVICI, V. A.; ABASHKIN, V. G.; SCHITSCO, V. N. (SPIE, Society of Photo-Optical Instrumentation Engineers, 1993)
    This paper describes a microbend displacement sensor with high sensitivity and wide dynamic range designed on the bases of multimode sensor—oriented fiber. A number of high sensitive sensors has been design on the basis ...
  • Evaluation of hole drift mobility in glassy As2S3 in the temperature range 77 - 330 K 
    ANDRIESH, A. M.; CULEAC, I. P.; EWEN, P. J. S.; OWEN, A. E. (National Institute of Optoelectronics, Romania, 2001)
    The temperature behaviour of time-averaged hole drift mobility in As2S3 glass was studied in the range 77-330 K on the basis of temperature dependence of steady-state photoinduced absorption. The time-averaged hole mobility ...
  • DNA-based composite with quercetin and fluorescein for medical applications 
    ROBU, S.; GONTA, A.; GONTA, M.; CULEAC, I.; FILIP, V.; RAU, I. (Institutul de Fizică Aplicată al AŞM, 2014)
    We report here preparation and characterization of DNA based composites, containing DNA as a matrix, and luminescent additives - fluorescein, an organic dye, and quercetin, an organic antioxidant.
  • Coordination complex [Eu(μ2-OC2H5)(btfa)(NO3) (phen)]2·phen with high luminescent efficiency 
    IOVU, Mihail S.; VERLAN, Victor I.; CULEAC, Ion P.; BORDIAN, Olga; ZUBAREVA, Vera E.; BULHAC, Ion; ENACHESCU, Marius; SIMINEL, Nichita A.; SIMINEL, Anatol V. (Institutul de Inginerie Electronică şi Nanotehnologii "D. Ghiţu" al AŞM, 2021)
    Experimental results on the bis[(μ2-etoxi)(benzoyl trifluoroacetonato)(nitrato)(1,10-phenantroline)europium(III)]1,10-phenantroline europium(III) coordination complex (hereafter, [Eu(μ2-OC2H5)(btfa)(NO3)(phen)]2·phen) are ...
  • Characterization the nanocomposites of coordination compounds of Eu3+ ions/PEPC by TGA, DSC, TEM AND SEM 
    BORDIAN, O.; VERLAN, V.; CULEAC, I.; IOVU, M.; BRANCOVEANU, O.; BALAN, D.; BOJIN, D.; ZUBAREVA, V.; ENACHESCU, M. (Institutul de Fizică Aplicată al AŞM, 2016)
    Coordination compounds of Europium(III) are excellent materials for a new generation of light emitting devices with high efficiency, easy color tuning, temperature insensitivity, and high stability. Compounds Eu(TTA)3(Ph3PO)2, ...
  • Characterization of the luminophore compounds based on Eu3+ ions coordinated with different ligands 
    VERLAN, V. I.; BORDIAN, O.; CULEAC, I. P.; IOVU, M. S.; ZUBAREVA, V. E. (Institutul de Fizică Aplicată al AŞM, 2016)
    Organic materials on Eu3+ ions base are excellent materials for a new generation of light emitting devices with high efficiency, and wide potential applications as luminescent labels in biological systems, etc. Organic ...
  • CdSe Quantum Dots and SBMA/CdSe Nanocomposites Characterization by Optical and 2D DOSY NMR Methods 
    GERU, I. I.; BORDIAN, O. T.; CULEAC, I. P.; VERLAN, V. I. (Horizon Research Publishing, 2015)
    We present experimental results on preparation and characterization of colloidal CdSe quantum dots (QDs) and polymer nanocomposite based on them. CdSe QDs were characterized by UV absorbance and visible photoluminescence ...

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