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Browsing Science and Society- the Use of Light by Title

Browsing Science and Society- the Use of Light by Title

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  • 2D materials nanotechnologies between great expectations and lost illusions 
    DRAGOMAN, Mircea (Technical University of Moldova, 2015)
    This talk will be a review of the state of the art of 2D materials starting with graphene. The graphene discovery and latter of other 2D materials have produced a revolution in nanotechnology. New physical phenomena were ...
  • 2D semiconductor-metal quasi-periodic structures for photonics 
    MONAICO, Eduard (Technical University of Moldova, 2015)
    We report on fabrication of metal nanotubes in semiconductor nanotemplates possessing ordered two-dimensional hexagonal arrays of pores grown in semiconductor substrates using anodic etching in neutral electrolyte.
  • Alternative technology for artificial stimulation of the motility of the gastrointestinal tract 
    POPA, V.; HOTINEANU, V.; SCORPAN, A.; CAZAC, A.; BRANISTE, T.; TIGINYANU, I. (Universitatea Tehnică a Moldovei, 2015)
    In most of the situations the direct electrical stimulation via electrodes of the gastrointestinal tract is not acceptable. An alternative remote method was developed by implantation of high concentration of piezoelectric ...
  • Behaviour of endothelial cells on surfaces functionalized by GaN nanoparticles 
    BRANISTE, Tudor; TIGINYANU, Ion; HORVATH, Tibor; RAEVSCHI, Simion; CEBOTARI, Serghei; LUX, Marco; HAVERICH, Axel; HILFIKER, Andres (Technical University of Moldova, 2015)
    In this work, we identify the mechanisms of interaction between GaN semiconductor compound nanoparticles and living endothelial cells. Cellular viability and uptaking of nanoparticles by cells as well as adhesion and ...
  • Bioinspired Optical Materials 
    ZOLLFRANK, Cordt (Universitatea Tehnică a Moldovei, 2015)
    Natural systems are able to produce materials with unique properties. The formation of complex three-dimensional structures in nature is of fundamental importance to break the limits imposed by available construction ...
  • Cavity quantum dynamics with pumped few-level emitters 
    CIORNEA, Viorel; BARDETSKI, Profirie; MACOVEI, Mihai A. (Technical University of Moldova, 2015)
    Cavity quantum electrodynamics attracted a lot of attention due to possible applications in various areas. Here we demonstrate increased photon-photon correlations in a setup consisting of a moderately pumped two-level ...
  • Chaos-based optical communication of semiconductor lasers with air gaps 
    OLOINIC, T.; RUSU, S. S.; TRONCIU, V. Z. (Technical University of Moldova, 2015)
    We report the numerical results of the dynamical behavior of a novel integrated semiconductor laser subject to multiple optical feedback loops. The laser’s setup consists of distributed feedback active section coupled to ...
  • Device for controlled hypothermia on Fuzzy logic algorithms 
    COJOCARU, Victor (Technical University of Moldova, 2015)
    We propose a sample of a device for therapeutics with hypothermia used in medical purposes for directed cooling of specific tissues using Peltier, elements. Peltier cooling elements allow elaboration of a small mobile ...
  • Discovery of the laser: Historical aspects 
    TIGINYANU, Ion (Technical University of Moldova, 2015)
    The main steps undertaken by the mankind towards the discovery of the laser are reviewed, starting from the development of quantum theory of radiation by Albert Einstein in 1917, first demonstration of stimulated emission ...
  • Enhanced efficiency of p-GaN/n-ZnO light-emitting diodes by using NiO and ZnSe interlayers 
    SIRKELI, V. P.; YILMAZOGLU, O.; KÜPPERS, F.; HARTNAGEL, H. L. (Technical University of Moldova, 2015)
    We report the results from numerical simulations of p-GaN/n-ZnO light-emitting diodes (LEDs) with different architectures. p-GaN/n-ZnO, p-GaN/p-NiO/n-ZnO, and p-GaN/p-NiO/n-ZnSe/n-ZnO LED structures have been examinated ...
  • Entanglement and cooperative effects between the mode components of raman process in cavity and their analogy with atomic collective effects 
    ENAKI, Nicolae A. (Technical University of Moldova, 2015)
    It is proposed the cooperative excitation and absorption of three cavity modes which corresponds to pump, Stokes and anti-Stokes photons stimulated by the atomic inversion. The three modes collective Roman emission is ...
  • Exciton–Polariton laser under the influence of the Landau quantization, Rashba spin-orbit coupling and Zeeman splitting 
    MOSKALENKO, S. A. (Technical University of Moldova, 2015)
    The report consists from two parts. In the first of them I present a review of the investigations effectuated during last decades of the phenomenon of the Bose-Einstein Condensation (BEC) in the system of two-dimensional ...
  • Expected thermoelectric properties of nanostructured TTT(TCNQ)2 crystals 
    SANDULEAC, I. I. (Technical University of Moldova, 2015)
    Advanced thermoelectric materials represent a keystone for development of new efficient devices for energy harvesting, local power generation from the waste heat and direct cooling systems. Thermal absorption of IR radiation, ...
  • Fabrication of ultrathin GaN membranes with relatively large sizes for practical applications 
    CIOBANU, Vladimir; BRANISTE, Tudor; POPA, Veaceslav; GRIDENCO, Oleg; BATIRI, Mihail; TIGINYANU, Ion (Technical University of Moldova, 2015)
    We propose for the implementation a cost effective technological route allowing one to fabricate ultrathin GaN membranes for sensor applications. The main efforts are focused on the design and development of active parts ...
  • Hybrid folded phonons in twisted graphene 
    NIKA, D. L.; COCEMASOV, A. I.; BALANDIN, A. A. (Technical University of Moldova, 2015)
    We theoretically investigated phonon dispersion and specific heat in AA-stacked, AB-stacked and twisted bilayer graphene with various rotation angles. Twisting bilayer graphene leads to emergence of new phonon branches – ...
  • IR absorption by free carriers in nanostructured organic crystals of tetrathiotetracene-iodide 
    CASIAN, Anatolie (Technical University of Moldova, 2015)
    The coefficient of long wave infra red (IR) absorption α is calculated for nanostructured organic crystals of tetrathiotetracene-iodide, TTT2I3, at room temperature as a function of radiation frequency v in the interval ...
  • Laser - magic tool for medical applications 
    CIOBANU, Nellu (Technical University of Moldova, 2015)
    Recently, stimulated radiation produced by laser plays an important and increasing role in biology and medical applications. A laser is a device that emits a high intensity, narrow beam of light, usually of one single color ...
  • Lasing properties of ZnO nanostructures 
    ZALAMAI, V. (Technical University of Moldova, 2015)
    On the base of zinc oxide was developed solar cells, although it efficiency is lower then industrial one using cost effective and uncomplicated technology of chemical bath deposition (CBD) makes this material very perspective. ...
  • Light interacting with interconnected Nanomaterials: from extreme absorbers to fast sensors 
    ADELUNG, Rainer (Technical University of Moldova, 2015)
    Almost perfect black and white materials can be created on the basis of highly porous 3D materials from metal oxide semiconductors like ZnO or SnO2 in a flame transport synthesis. The white appearance originates by the ...
  • Luminescence and optical second harmonic generation in atomically thin layered transition metal dichalcogenides 
    KULYUK, Leonid (Technical University of Moldova, 2015)
    This work concerns the photoluminescence (PL) properties of 2H-WS2, 2H-WSe2, 2H- and 3R-MoS2 bulk crystals and 2D flakes intercalated with halogen molecules, caused by direct gap emission with both neutral and charged ...

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