Now showing items 1-20 of 160

    • Some of the photothermal properties of one- and two-layer structures 

      Pieszyński, Krzysztof (Politechnika Łódzka, 2007)
      The results of numerical calculations of temperature on a multi-layer structures' surface illuminated with intensity periodically-modulated beam of light are presented. In fact the influence of some geometrical and thermal ...
    • Laser surface melting of cobalt monocrystal 

      Rożniakowski, Kazimierz (Politechnika Łódzka, 2007)
      The paper presents a concise description of laser surface melting of cobalt monocrystal and some related phenomena. Pulses of electromagnetic radiation of nano and mili-second duration, generated by Nd:YAG laser were used ...
    • Self-consistent calculations of the dynamic, thermodynamic and elastic properties of a lattice of atomic crystals 

      Malinowska-Adamska, Cecylia; Słoma, Piotr (Politechnika Łódzka, 2007)
      The application of the self-consistent phonon theory (SCPT) formulated by Plakida and Siklós on the basis of the double-time Green's function method to the atomic crystals: rare gas solids (RGS), quantum crystals (QC) and ...
    • Dielectric relaxation modes in antiferroelectric liquid crystal mixture 

      Wojciechowski, Marek (Politechnika Łódzka, 2007)
      Mixture of liquid crystals, with induced antiferroelectric phase has been studied by means of dielectric spectroscopy. The dielectric measurements were carried out in a cell with gold electrodes at planar orientation. The ...
    • What is the true order of magnitude of the quadratic electrooptic coefficient |g1111-g1122| in RDP crystal? 

      Górski, Piotr; Kilański, Łukasz; Ledzion, Rafał; Kucharczyk, Włodzimierz (Politechnika Łódzka, 2007)
      Measurements based on the dynamic polarimetric technique of the electrooptic coefficient |g1111-g1122| are applied to determine the order of magnitude of the quadratic electrooptic effect in RDP. The results obtained confirm ...
    • Microscopic investigations of Gold Basin and El Hammani chondrites 

      Szurgot, Marian; Polański, Krzysztof (Politechnika Łódzka, 2007)
      Elemental and mineral composition of Gold Basin and El Hammami meteorites discovered in 1995 and 1997 have been studied by analytical electron microscopy and optical microscopy. It was established that the main meteorite ...
    • Curing process and the curing product of a nematic epoxy resin containing ester groups 

      Włodarska, Magdalena; Mossety-Leszczak, Beata; Bąk, Grzegorz; Galina, Henryk (Politechnika Łódzka, 2007)
      Curing process and the product of curing of one liquid crystalline epoxy monomer with a standard omine were examined. The reactions were monitored by DSC measurement and dielectric spectroscopy. Progress of curing of the ...
    • On the contribution of the quadratic electrooptic effect to the nonlinear response proportional to the fourth power of modulating field 

      Izdebski, Marek; Kucharczyk, Włodzimierz (Politechnika Łódzka, 2007)
      It is shown that the fourth-order electrooptic effect cannot be measured without a background of the contribution that is proportional to the square of the quadratic electrooptic coefficient. The contribution manifests on ...
    • Field emission and microstructural characterization of diamond films deposited by HF CVD method 

      Jarzyńska, Dagmara; Staryga, Elżbieta; Znamirowski, Zbigniew; Fabisiak, Kazimierz; Gotszalk, Teodor; Woszczyna, Mirosław; Strzelecki, Włodzimierz; Dłużniewski, Maciej (Politechnika Łódzka, 2007)
      Electron emission from diamond films (DF) deposited using HF CVD technique on silicon substrates has been studied. The field emission characteristics were analyzed using the Fowler-Nordheim model. The diamond films were ...
    • Hole drift mobility in antrachinon layers 

      Kania, Sylwester (Politechnika Łódzka, 2007)
      The drift mobility of holes in the antrachinon layers were determined. The layers were evaporated in the vacuum of the order of 10-5Torr. Due to the substrate temperature the layers were in the structure polycrystalline ...
    • Thermodynamic properties of solid neon in the reduced all-neighbours approximation of the self-consistent phonon theory 

      Tomaszewski, Janusz; Malinowska-Adamska, Cecylia; Słoma, Piotr (Politechnika Łódzka, 2007)
      The results of studies of physical properties of solid neon with the help of the reduced, all-neighbours approximation of the self-consistent phonon theory are presented. The interatomic interactions are described by the ...
    • Kerr constant of Fomblin Z 

      Ledzion, Rafał; Karolczak, Stefan; Górski, Piotr; Kucharczyk, Włodzimierz (Politechnika Łódzka, 2008)
      The Kerr constant B of polyperfluoroethylenemethylene oxide Fomblin Z has been determined within the temperature range 295-323K. At 300K the constant B was found to be equal to 1.7 10(-15) m/V2. The results obtained indicate ...
    • Microstructure of NWA 4435 meteorite 

      Szurgot, Marian; Polański, Krzysztof (Politechnika Łódzka, 2008)
      Elemental composition, mineral composition and microstructure of NWA 4435 meteorite found in 2006 has been studied by analytical electron microscopy and optical microscopy. It was established that the main meteorite minerals: ...
    • Gaussian light beam propagation in inhomogeneous medium 

      Pieszyński, Krzysztof (Politechnika Łódzka, 2008)
      In this work the results of numerical calculations describing propagation of Gaussian light beam in inhomogeneous media is presented. Numerical calculation was based on scalar wave approximation. Additionally the split-step ...
    • Dielectric characteristics of antiferroelectric liquid crystalline mixture 

      Wojciechowski, Marek (Politechnika Łódzka, 2008)
      Mixture of liquid crystals, with induced antiferroelectric phase has been studied by means of dielectric spectroscopy. The dielectric measurements were carried out in a cell with gold electrodes at planar orientation. The ...
    • Charge carrier conductivity mechanism for activated tetracene layers 

      Kania, Sylwester; Kuliński, Janusz (Politechnika Łódzka, 2008)
      The activation process and the transport process for electrons in the tetracene layers is considered. Obtained results may suggests the hopping transport through the localized states near the Fermi level as a dominant kind ...
    • Role of ions mobility in flexoelectric deformations of conductive homeotropic nematic layers 

      Buczkowska, Mariola; Derfel, Grzegorz (Politechnika Łódzka, 2008)
      Numerical studies of d.c. electric field induced deformations of homeotropic layers of flexoelectric nematics containing ions are presented. It is shown that anomalous dependencies of threshold voltage for deformations on ...
    • Electrooptic modulation of light beams deviated far from normal incidence 

      Izdebski, Marek (Politechnika Łódzka, 2008)
      It is shown that the electrooptic modulation of the phase difference for the light beams propagating oblique through the crystalline plane-parallel plate appears not only as the direct result of the field-induced changes ...
    • Numerical investigation of deformations of planar flexoelectric nematic layers containing ions 

      Buczkowska, Mariola; Wasilewski, Grzegorz (Politechnika Łódzka, 2008)
      Deformations of planar nematic layers of conducting nematic liquid crystal possessing flexoelectric properties and subjected to external d.c. voltage were studied numerically. Various kinds of electrodes, from strongly ...
    • Dielectric relaxation modes in liquid crystalline mixture 

      Wojciechowski, Marek (Politechnika Łódzka, 2009)
      Mixture of two liquid crystalline compounds (which do not exhibit antiferroelectric or ferrielectric phase separately) shows ferrielectric phase in a broad temperature range. The dielectric spectroscopy technique was used ...