• Ab initio Study of Exciton Transfer Dynamics from a Core-Shell Semiconductor Quantum-Dot to a Porphyrin-Sensitizer 

    Kilin, D. S.; Tsemekhman, K.; Prezhdo, O. V.; Zenkevich, E. I.; von Borczyskowski, C. (2007)
    The observed resonance energy transfer in nanoassemblies of CdSe/ZnS quantum dots and pyridyl-substituted free-base porphyrin molecules [Zenkevich et al., J. Phys. Chem. B 109 (2005) 8679] is studied computationally by ab initio electronic structure and quantum dynamics approaches. The system harvests light in a broad energy range and can transfer the excitation from the dot ...
    2017-05-27
  • Acoustic Response to the Action of Nanosecond Laser Pulses on an In/CdTe Thin-Film Heterostructure 

    Vlasenko, A. I.; Veleshchuk, V. P.; Gnatyuk, V. A.; Levitskii, S. N.; Vlasenko, Z. K.; Ivlev, G. D.; Gatskevich, E. I. (2015)
    The photothermoacoustic method has been used for diagnostics of thermobarodynamic processes in the metal In(400 nm)/semiconductor (CdTe) thin-film system under nanosecond laser irradiation (7 ns, λ = 532 nm) in natural conditions (in air) and in a liquid medium (water). From the analysis of the data obtained, the dependence of the pressure induced in the energy-release region on ...
    2017-11-22
  • All-space existence and dispersion of athermal directions in monoclinic KY(WO4)2 

    Filippov, V.; Yumashev, K. V.; Kuleshov, N. V.; Pavlyuk, A. A.; Loiko, P. A. (Elsevier, 2014)
    The analytical expressions for thermo-optic coefficients, dn/dT, for “fast” and “slow” light waves propagating along the arbitrary direction in a biaxial crystal are derived. On the basis of these expressions, the all-space analysis of existence of athermal directions is performed for monoclinic and biaxial KY(WO4)2 at 1.03 μm. The calculations are performed for an arbitrary ...
    2016-02-08
  • Anchorage of Retaining Walls and Antilandslide Structures 

    Nikitenko, M.; Boiko, I.; Sernov, V.; Chernoshey, N.; Sikorae, N. (2013)
    The article describes the experience of designing, arrangement and testing of anchors for fixing the protection of deep foundation pits in narrow urban areas on various construction projects during the reconstruction
    2018-03-10
  • Anisotropy of the photo-elastic effect in Nd : KGd(WO4) 2 laser crystals 

    Loiko, P. A.; Savitski, V. G.; Kemp, A.; Pavlyuk, A. A.; Kuleshov, N. V.; Yumashev, K. V. (Wiley, 2014)
    The anisotropy of thermal lensing and the photo-elastic effect is characterized for diodepumped Nd : KGd(WO4)2 crystals cut along the Np and Ng optical indicatrix axes and along its optical axis, O = Ng + 43°, at a laser wavelength of 1067 nm. Distortions in the spatial profile of the output laser beam are analyzed. The thermal lens is astigmatic; the orientation of its principal ...
    2016-02-08
  • Application of active powders at fluidised bed heat treatment technologies 

    Babul, T.; Kucharieva, N. (Inderscience Enterprises Ltd, 2014)
    The paper describes the principles and conditions of carrying out of a new type of fluidised bed thermochemical treatment in chemically active powders with different ways of fluidisation. These new fluidised bed thermochemical treatments in chemically active powders are primarily for the formation of surface diffusion layers on parts made of constructional and tool steel. This ...
    2016-01-05
  • Application of Modern Educational Technologies at the Research University 

    Kachalov, N.; Velsh, A.; Antonova, Z.; Konysheva, A.; Proschaeva, N. (2015)
    Application of modern educational technologies for diagnosing set education results, student motivation increase, influencing creative thinking ability aimed at problem solving, critical understanding of information and independent educational activity skills development are discussed in the paper
    2018-03-10
  • Assembly principles and relaxation processes in nanosized heterogeneous complexes 

    Zenkevich, E. I.; von Borczyskowski, C. (2009)
    Based on the extra-ligand addition effect, the principles of targeted self-assembly of nanosized multiporphyrin complexes of various types with controllable geometry and composition (up to 8 tetrapyrroles) and heterogeneous composites based on trioctylphosphine oxide-stabilized CdSe/ZnS semiconductor nanocrystals and organic compounds were developed. The dynamics and mechanisms ...
    2017-05-27
  • Bautin ideal of a cubic map 

    Benediktovitch, I.; Romanovski, V. (2001)
    We compute the radical of the ideal generated by the first three focus quantities of maps defined by irreducible branches of a cubic curve on the real plane. It is shown that the ideal is not radical in this case
    2018-03-10
  • Behavior of nanoparticle clouds around a magnetized microsphere under magnetic and flow fields 

    Magnet, С.; Kuzhir, P.; Bossis, G.; Meunier, A.; Nave, S.; Zubarev, A.; Lomenech, C.; Bashtovoi, V. G. (American Physical Society, 2014)
    When a micron-sized magnetizable particle is introduced into a suspension of nanosized magnetic particles, the nanoparticles accumulate around the microparticle and form thick anisotropic clouds extended in the direction of the applied magnetic field. This phenomenon promotes colloidal stabilization of bimodal magnetic suspensions and allows efficient magnetic separation of ...
    2016-01-05
  • Biomechanical properties of composite compact-porous titanium produced by electric discharge sintering 

    Minko, D.; Belyavin, K.; Sheleg, V. (2017)
    The main disadvantage of currently used endosteal implants is their unsatisfactory biostable performance. Under action of functional stress caused by flaws of the design or lower mechanical characteristics the areas of stresses extreme concentration exceeding strength limits of bone tissue appears in the bone surrounding the implant that leads to the tearing away the implant. The ...
    2018-03-15
  • Broadly tunable femtosecond mode-locking in a Tm:KYW laser near 2 μm 

    Lagatsky, A. A.; Calvez, S.; Gupta, J. A.; Kisel, V. E.; Kuleshov, N. V.; Brown, C. T. A.; Dawson, M. D.; Sibbett, W. (Optical Society of America, 2011-05-09)
    Efficient mode-locking in a Tm:KY(WO4)2 laser is demonstrated by using InGaAsSb quantum-well SESAMs. Self-starting ultrashort pulse generation was realized in the 1979-2074 nm spectral region. Maximum average output power up to 411 mW was produced around 1986 nm with the corresponding pulse duration and repetition rate of 549 fs and 105 MHz respectively. Optimised pulse durations ...
    2012-01-24
  • Broadly tunable femtosecond mode-locking in a Tm:KYW laser near 2 μm 

    Lagatsky, A. A.; Calvez, S.; Gupta, J. A.; Kisel, V. E.; Kuleshov, N. V.; Brown, C. T. A.; Dawson, M. D.; Sibbett, W. (2011)
    Efficient mode-locking in a Tm:KY(WO4)(2) laser is demonstrated by using InGaAsSb quantum-well SESAMs. Self-starting ultrashort pulse generation was realized in the 1979-2074 nm spectral region. Maximum average output power up to 411 mW was produced around 1986 nm with the corresponding pulse duration and repetition rate of 549 fs and 105 MHz respectively. Optimised pulse durations ...
    2018-03-15
  • Business valuation in emerging markets 

    Trifonov, N. Yu. (TAF, 2008)
    Problems of peculiarities of business valuation techniques in emerging markets are discussed in the paper.
    2014-02-05
  • Calculation of Residual Magnetic-Field Distributions upon Hysteretic Interference of a Pulsed Magnetic Field 

    Pavlyuchenko, V. V.; Doroshevich, E. S.; Pivovarov, V. L. (2015)
    Equations that are used for the calculation and distributions of the electrical voltage U(t) output from a magnetic-field transducer as it scans a discrete magnetic medium with recorded residual magnetic fields, which were produced in it by acting individual magnetic-field pulses with opposite-polarity surges, are reported. The distributions were obtained via the Delphi programming ...
    2017-11-23
  • Central and Eastern European Countries 

    Trifonov, N. Yu. (Kluwer academic publishers, 2002)
    Trifonov, Nikolai. Central and Eastern European Countries / Nikolai Trifonov // Real estate education throughout the world: past, present and future / Karl-Werner Schulte . - Kluwer academic publishers: 2002. - Chapter 5. – Р. 61 – 88.
    2014-01-28
  • Changing of technical and operational road parameters caused by traffic load and climatic factors 

    Leonovich, I.; Melnikova, I. (2014)
    Climatic factors and car wheels are the reasons of changes in road condition: deformations of subgrade, cracks, potholes and rut appear, roughness and safety are deteriorating, and the strength of the road structure reduces. In our opinion, cracks in the road structure are of particular importance. The appearance of cracks causes the destruction of the whole road structure during ...
    2018-03-10
  • Choosing The Risk Curve Type 

    Vlasenko, O.; Kozlov, S. (2009)
    Dialectics of categories of risk and return are becoming increasingly important in business process. The knowledge of risk indices allows to shape the judgement and make a decision. The provided risk-management method lets to make more reasonable and adequate managing decisions. The paper provides the substantiation of necessity of the enterprise risk level integral estimation. ...
    2018-03-15
  • Compact 0.7 mJ/11 ns eye-safe erbium laser 

    Vitkin, V. V.; Polyakov, V. M.; Kharitonov, A. A.; Buchenkov, V. A.; Rodionov, A. Yu.; Zhilin, A. A.; Dymshits, O. S.; Loiko, P. A. (2016)
    We report on the development of a compact diode-end-pumped eye-safe (similar to 1.54 mu m) passively-cooled Er, Yb:glass laser. The design of this laser is facilitated by the use of a double-pass pumping scheme and a special ZrO2 diffuse reflector for a uniform pump distribution. In the free-running mode, this laser generates 8.2 mJ/3 ms pulses with a slope efficiency of 15%. ...
    2018-02-27
  • Compact passively Q-switched diode-pumped Tm:KY(WO4)2 laser with 8 ns/30 μJ pulses 

    Gaponenko, M. S.; Onushchenko, A. A.; Kisel, V. E.; Malyarevich, A. M.; Yumashev, K. V. (2012)
    A compact diode-pumped solid-state Tm:KY(WO4)2 laser with cavity length of 1 cm passively Q-switched with a PbS-quantum-dot-based saturable absorber is presented. The laser operates at the wavelength of 1.94 ¹m and produces pulses with duration of 8 ns and energy of 30 ¹J at the repetition rate up to 4.2 kHz. The maximum output power of 120 mW is achieved at incident pump power of 1.15 W
    2018-03-18