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Conferinţe: Recent submissions

Now showing items 981-1000 of 2187

Problem Formula of the Giant Impressed Electric Field Strength to Single Transmembrane With Nanopore Structures

IGNAT, M.; FLORESCU, L. (Tehnica UTM, 2015)

A new model and a new experiment which describes the fabrication and use of hierarchical nanofluidic device made of a boron nitride nanotube that pierches an ultrathin membrane and connects two fluid reservoirs , is ...
Suppression of phonon heat conduction in cross-section modulated nanowires

ISACOVA, C.; COCEMASOV, A.; NIKA, D. (Tehnica UTM, 2015)

In this work we have theoretically investigated phonon heat flux in cross- section modulated Si/Ge segmented nanowires, employing the Born-von Karman type and Face-centered cubic cell models of lattice vibrations and the ...
Features of Nanotemplates Manufacturing on the II-VI Compound Substrates

COLIBABA, G. V.; MONAICO, E. V.; GONCEARENCO, E. P.; INCULET, I.; TIGINYANU, I. M. (Tehnica UTM, 2015)

Application of ZnSe, ZnS, ZnSSe, CdS, ZnCdS and ZnO single crystal substrates for the preparation of nanoporous matrices by electrochemical etching using various electrolytes is analyzed. We demonstrate prospects of using ...
Evaluation of Spin Relaxation Time by Polarization- and Time-Resolved Pump and Probe Measurements

FUMA, S.; ITO, T.; GOTO, H.; ICHIDA, M.; ANDO, H. (Tehnica UTM, 2015)

Polarization- and time-resolved pump and probe (PP) measurements were performed to observe spin superposition in GaAs/AlGaAs multiple quantum wells (MQWs). We used a linearly polarized right for pump light under resonant ...
Activation Process of GaAs NEA Photocathode and its Spectral Sensitivity

MITSUNO, K.; MASUZAWA, T.; HATANAKA, Y.; NEO, Y.; MIMURA, H. (Tehnica UTM, 2015)

Negative electron affinity (NEA) Gallium Arsenide (GaAs) photocathodes with high photo-electric conversion quantum efficiency (QE) and high response speed are expected as an electron source for THz frequency vacuum devices. ...
Observation of Electron Spin Relaxation Time in PNPN Structured GaAs

MOROZUMI, A.; ITO, T.; ICHIDA, M.; ANDO, H. (Tehnica UTM, 2015)

To observe effect of electron-hole exchange interaction on electron spin relaxation time, we performed polarization- and time-resolved PL measurements by using pnpn structured GaAs. This structure is supposed spatial ...
Anticipated Synchronization of Passive Dispersive Reflector Semiconductor Laser

CIOBANU, N.; RUSU, S.; TRONCIU, V. (Tehnica UTM, 2015)

We discuss a model of anticipated synchronization of two distributed feedback lasers (DFB) with passive dispersive reflector. The influence of passive dispersive reflector parameters on the anticipated synchronization is ...
Entanglement Among Photon and Phonon Degrees of Freedom

CÂRLIG, S. (Tehnica UTM, 2015)

We have investigated the quantum dynamics of a laser pumped quantum dot placed on a semiconductor beam suspended in an optical cavity. We demonstrate that optical and vibrational modes are correlated and we attest the ...
Excitonic Crystal in Nanotechnology

PYSHKIN, S. (Tehnica UTM, 2015)

This paper demonstrates the results of development of growth technology for perfect and free of contamination gallium phosphide (GaP) crystals and investigation of influence of crystallization conditions on quality and ...
Slow Relaxation of Magnetization in a Family of Linear MnIIIMIIIMnIII (M = Fe, Ru, Os) Compounds

REVENCO, M.; SECU, M.; OSTROVSKY, S.; REU, O.; PALII, A.; PALAMARCIUC, O.; PEDERSEN, K.; CLERAC, R.; KLOKISHNER, S. (Tehnica UTM, 2015)

The experimental and theoretical study of a family of linear trimeric [NEt4] {[Mn(L)]2[M(CN)6]} (M = Fe, Ru, Os) compounds is reported. All three complexes demonstrate slow relaxation of magnetization at low temperatures. ...
Characterization of TiO2 Nanoparticles and ZnO/TiO2 Composite Obtained by Hydrothermal Method

RUSU, E.; URSAKI, V.; GUTUL, T.; VLAZAN, P.; SIMINEL, A. (Tehnica UTM, 2015)

ZnO and TiO2 nanoparticles as well as ZnO/TiO2 core/shell structures have been prepared by hydrothermal method and characterized by means of scanning electron microscopy, XRD and EDX analysis, FTIR and luminescence ...
Effect of Spin Coating Technique on Mechanical Properties of Silicophosphate Thin Film Doped by Neodymium

GRABCO, D.; SHIKIMAKA, O.; ELISA, M.; SAVA, B.; BOROICA, L.; HAREA, E.; PYRTSAC, C.; PRISACARU, A.; FERARU, I.; BARBOS, Z.; VREME, Ia. (Tehnica UTM, 2015)

This work is focused on the effect of spin coating technique on the mechanical properties of silicophosphate (SP) thin films belonging to system SiO2-P2O5-Nd2O3. The thin films have been obtained by spin coating technique ...
X-Ray Photoelectronic Spectroscopy of GaN, AlGaN layers, Grown on Silicon by the Chemical Transport Reactions Method

RAEVSCHI, S.; BOTNARIUC, V.; GORCEAC, L.; POTLOG, T.; DOBROMIR, M.; LUCA, D. (Tehnica UTM, 2015)

Thin layers of GaN, and AlGaN were synthesized on Silicon substrates by chemical transport reactions method in the system (H2-NH3-HCl-Al-Ga).The composition of surface layers was studied by X-ray Photoelectron Spectroscopy ...
Detection in the Contacts with HTSC - InSb: Numerical Modeling of the Contact Area Role

KERNER, Ia.I. (Tehnica UTM, 2015)

Diode detectors (DD) are widely used in electronic information and communication systems. The numerical modeling of the electrical properties in the contacts of the high temperature superconductor (HTSC) with semiconductor ...
Perspectives of Bulk and Nanosized II-VI Compounds for Light-emission Application

RADEVICI, I.; SUSHKEVICH, K.; COLIBABA, G.; HUHTINEN, H.; NEDEOGLO, D.; PATURI, O. (Tehnica UTM, 2015)

Activation of II-VI semiconductors with transition metals (Cr) and rare-earths elements (Yb) results in interaction of the doping ions with the native defects (e.g., zinc vacancies). This interaction has the most significant ...
Nanomultilayer As2S3:Mn-Se Systems: Properties and Use as the Recording Media

PAIUK, O.; MESHALKIN, A.; TRIDUH, G.; PRISACAR, A.; ACHIMOVA, E.; STRONSKI, A.; ABASHKIN, V.; LYTVYN, O.; SENCHENKO, O.; GUBANOVA, A. (Tehnica UTM, 2015)

Properties of nanomultilayer As2S3:Mn systems and peculiarities of holographic gratings recording with their use are considered in this report. Optical constants were obtained from transmission data, spectral dependencies ...
Peculiarity of High-Field Galvanomagnetic Effects in Bicrystals of Bi and its Alloys with Sb

MUNTYANU, E. M.; GILEWSKI, A.; CHISTOL, V.; ROGACKI, K. (Tehnica UTM, 2015)

We present the results of investigation of high-field (up to 40 T) galvanomagnetic effects in bicrystals of semimetalic Bi and 3D topological insulator Bi1−x Sbx (0.07 < x <0.22) with nano-width crystallite interfaces ...
Influence of Resonant Optical Phonons on Intersubband Magnetoabsorption in Nanowires

SINYAVSKII, E. P.; KANAROVSKII, E. Yu.; KOSTYUKEVICH, N. S. (Tehnica UTM, 2015)

The investigation concerns the influence of the electron-phonon interaction on the form of bands of the intersubband absorption of a weak electromagnetic wave in quantum wires in a transverse magnetic field. The interaction ...
Chronic Toxicity of Silver Nanoparticles

PAVLOVSCHI, I.; GONCEAR, V.; SCUTARI, C. (Tehnica UTM, 2015)

The unique physical and chemical properties of silver nanoparticles make them excellent candidates for a variety of purposes in various fields, but the rhythm of using nanoscale materials is rapidly growing and possible ...
Slow Magnetic Relaxation in Dysprosium Based Single-Ion Magnets

PREUSS, K.; CLERAC, R.; REU, O.; OSTROVSKY, S.; PALII, A.; KLOKISHNER, S. (Tehnica UTM, 2015)

The experimental and theoretical study of two mononuclear dysprosium-based complexes is reported. Both complexes demonstrate slow relaxation of magnetization at low temperatures. The Hamiltonian for explanation of the ...

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