IRTUM – Institutional Repository of the Technical University of Moldova

Browsing Science and Society- the Use of Light by Title

Browsing Science and Society- the Use of Light by Title

Sort by: Order: Results:

  • 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 ...
  • Luminescent and optical spectroscopy of ZnO crystals obtained by new method based on the halide vapor transport 
    COLIBABA, G. V.; SHTEPLIUK, I. I.; GONCEARENCO, E. P.; INCULET, I. (Technical University of Moldova, 2015)
    The photoluminescence (PL), transmittance and IR reflectance spectra were investigated for ZnO single crystals grown by the HCl chemical vapor transport technique. Electrical parameters were also calculated from the Hall ...
  • Metal oxide nanowires for photodetectors and light emitting diodes 
    LUPAN, Oleg (Technical University of Moldova, 2015)
    In this presentation will be overviewed various nano- and microscale device structures made on a single metal oxide nanowire (ZnO, SnO2, CuO, etc.), as well as the use of their arrays. Nanowires were grown by several ...
  • Modeling of the structural transition in the nanostructured tetrathiotetracene-iodide crystal 
    ANDRONIC, Silvia (Technical University of Moldova, 2015)
    The Peierls structural transition in quasi-one-dimensional (Q1D) organic crystals of tetrathiotetracene iodide (TTT2I3) is presented in the 1D and 2D physical model. For a more complete description of the crystal, two the ...
  • Multi sections semiconductor lasers with an air gap for chaos based communication 
    ANTOHI, I.; OLOINIC, T.; SANDUȚA, A.; RUSU, S. S.; TRONCIU, V. Z. (Technical University of Moldova, 2015)
    This paper reports 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 ...
  • New take-off of Gallium Nitride 
    TIGINYANU, Ion (Technical University of Moldova, 2015)
    Gallium Nitride (GaN) is a wide-band-gap semiconductor compound (Eg = 3.4 eV at 300 K) which over the last decades played a major role in the development of modern solid-state lighting industry. An intensive investigation ...
  • Plasmonic Effects for Enhanced Optical Mixing in view of THz Signal Generation 
    HARTNAGEL, Hans (Technical University of Moldova, 2015)
    First various graphene realizations of electronic circuitry examples are described. These represent application examples for the new material graphene. Then compact THz sources are presented involving optical laser mixing, ...
  • Radiative properties of GaSe and GaSe: Eu nanolamellar structures intercalated with Cd 
    UNTILA, D.; CARAMAN, M.; CANȚER, V.; EVTODIEV, Ig. (Technical University of Moldova, 2015)
    In this work the crystalline structure, surface morphology, photoluminescence (PL) and absorption spectra of CdSe-GaSe and CdSe-GaSe<Eu> composites are studied in the fundamental absorption band edge region. The studied ...
  • Random lasers: 30 years of development 
    URSAKI, V. V. (Universitatea Tehnică a Moldovei, 2015)
    In this report an overview of random lasers development is presented staring from the first theoretical prediction of random laser action by Letokhov about 50 years ago and the first experimental demonstration by Markushev ...
  • Semiconductor lasers a key element for new generation of optoelectronic systems 
    V. Z. TRONCIU, V. Z. TRONCIU (Technical University of Moldova, 2015)
    Semiconductor laser is a key element for different photonics devices. We report the results of numerical end experimental investigations of the dynamical behaviour of different types of semiconductor lasers. Very encouraging ...
  • Spintronics and optoelectronics - the light makes them closer 
    SIDORENKO, Anatolie (Technical University of Moldova, 2015)
    Last decade very rapid development became a new direction of the microelectronics of 21st century – spintronics, or spin-dependent electronics. It is similar to the extremely rapid development of the optoelectronics in ...
  • Synchronization of chaos of quantum dots lasers under the influence of external cavity optical feedback 
    SANDUȚA; OLOINIC, T.; RUSU, S. S.; TRONCIU, V. Z. (Technical University of Moldova, 2015)
    We report the numerical results on the investigation of the dynamical behavior of a semiconductor laser with quantum dots active medium and a feedback from double cavity. Due to the influence of the external feedback, under ...
  • Technology transfer from research laboratory to industry 
    COJOCARU, A.; SCHMIDT-NIEPENBERG, H.; ADELUNG, R. (Technical University of Moldova, 2015)
    A strong collaboration between industry and the reserch laboratory helps both partners to find their common technological objectives resulting in the reduction of the development costs and risks. Nevertheless, the ...
  • Theory of Catalytic Micro- and Nanoengines: From Self-Propulsion Mechanisms to Remediation of Polluted Water 
    FOMIN, V. (Technical University of Moldova, 2015)
    A review is given of the theoretical ideas concerning the propulsion mechanisms of the catalytic micro- and nanoengines, which are prospective in robotics, biomedical engineering and environmental sustainability. Enhanced ...

Search DSpace


Browse

My Account