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Wyszukujesz frazę "Jakubczyk, M." wg kryterium: Autor

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Investigation of Structural Changes in Metallic Glass Fe$\text{}_{18}$Co$\text{}_{60}$Si$\text{}_{9}$B$\text{}_{13}$
    Autorzy:
    Jakubczyk, E.
    Filipecki, J.
    Mandecki, Z.
    Jakubczyk, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1933512.pdf
    Data publikacji:
    1995-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.43.Dq
    Opis:
    Structural changes accompanying the isothermal annealing of the metallic glass Fe$\text{}_{18}$Co$\text{}_{60}$Si$\text{}_{9}$B$\text{}_{13}$ were investigated by X-ray diffraction, positron annihilation as well as by electrical resistivity and the Hall resistivity measurements. It has been found out that at the temperature of 673 K the complete crystallization did not occur, but only a few nuclei of the α-Fe phase, which did not grow, were formed.
    Źródło:
    Acta Physica Polonica A; 1995, 88, 1; 163-169
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evolution of Laser Light Induced Sodium Clusters
    Autorzy:
    Kolwas, M.
    Kolwas, K.
    Jakubczyk, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1931531.pdf
    Data publikacji:
    1994-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.70.-p
    31.70.Hq
    36.40.+d
    Opis:
    We investigated the growing sodium clusters, induced by the laser light resonant with a sodium dimer transition. We observed the intensity of light scattered by clusters. The clusters were produced in the stainless steel cell containing sodium vapor and helium. We obtained data on cluster mean size and dynamics from fitting the theoretical formulas to the experimental data. The model of clusters' evolution basing on the thermodynamics of the vapor-liquid transition was applied.
    Źródło:
    Acta Physica Polonica A; 1994, 86, 1; 257-266
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Matrix Representation of Constants of Motion for One-Dimensional Heisenberg Magnet
    Autorzy:
    Jakubczyk, P.
    Labuz, M.
    Lulek, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/1402564.pdf
    Data publikacji:
    2015-08
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    03.65.Aa
    75.10.Jm
    Opis:
    We demonstrate an exact diagonalization of the one-dimensional Heisenberg magnet in terms of algebraic Bethe Ansatz. We point out, by a polynomial expansion of the transfer matrix with respect to spectral parameter, a complete set of observables for classification of all eigenstates. We introduce an application of our approach on the example of the Heisenberg magnet consisting of four qubits, including its constants of motion, density matrices and complete classification of eigenstates.
    Źródło:
    Acta Physica Polonica A; 2015, 128, 2; 176-178
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaporation of Micro-Droplets: the "Radius-Square-Law" Revisited
    Autorzy:
    Jakubczyk, D.
    Kolwas, M.
    Derkachov, G.
    Kolwas, K.
    Zientara, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418268.pdf
    Data publikacji:
    2012-10
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    64.70.F-
    64.70.fm
    68.03.Fg
    68.03.Hj
    05.70.Ln
    Opis:
    The range of applicability of a fundamental tool for studying the evolution of droplets, the "radius-square-law", was investigated both analytically and numerically, on the basis of the experimental results of our own as well as of other authors. Standard issues were briefly discussed. Departures from the "radius-square-law" caused by the influence of impurities encountered in non-ideal liquids, by the kinetic and surface tension effects encountered for small droplets or by thermal imbalance encountered in light-absorbing droplets were analysed. The entanglement between the kinetic and impurities effects was studied numerically yielding a possible explanation to evaporation coefficient discrepancies found in the literature. An unexpected "radius-square-law" persistence in case of non-isothermal evolutions of very small droplets in atmosphere nearly saturated with vapour was analysed. The coexistence of the kinetic effects and the strong effects of surface tension was found responsible for this effect.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 4; 709-716
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Collective Scattering of Light on Gold Nanospheres Dispersed in Diethylene Glycol Microdroplet
    Autorzy:
    Kolwas, M.
    Kolwas, K.
    Jakubczyk, D.
    Derkachov, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1033431.pdf
    Data publikacji:
    2017-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    whispering gallery modes
    Fano profile
    plasmon
    micro-cavities
    collective scattering
    droplet with inclusions
    Opis:
    Light scattering on a freely suspended, evaporating droplet of suspension of gold nanospheres (125 nm radius) in diethylene glycol is studied, revealing both local and nonlocal properties of the system. When the average distance between the nanospheres at the droplet surface matches the wavelength of light, a (broad) maximum, associated with the collective scattering on them, is observed. The number of nanospheres at the droplet surface can be found then. A fine modulation of the maximum is associated with the whispering gallery modes of the composite droplet. The Fano profile identified in the modulation is interpreted as an interference of collective scattering and whispering gallery modes. The ultra narrow enhancement-and-quench structure recognizable in the modulation is interpreted as associated with the creation and destruction of collective oscillation of plasmons of individual nanospheres. It is proposed that this phenomenon can be perceived as whispering gallery modes-assisted creation and destruction of a global plasmon.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 2; 288-293
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Size Evolution of the Light Induced Sodium Clusters
    Autorzy:
    Hnat, B.
    Jakubczyk, D.
    Kolwas, K.
    Kolwas, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1920745.pdf
    Data publikacji:
    1992-06
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    36.40.+d
    31.70.Hq
    64.70.-p
    Opis:
    We report the observation of the size evolution of the laser light formed clusters. A cell containing sodium vapor and the buffer gas (He) under high pressure was used in the experiment. Changes of the radius and of the density of transient clusters were observed via the time evolution of the intensity of right-angle scattered light. The rate of the cluster radius growth was found to vary from 0.012 to 0.1 μm/s.
    Źródło:
    Acta Physica Polonica A; 1992, 81, 6; 629-637
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Toward Better Light-Confinement in Micropillar Cavities
    Autorzy:
    Ściesiek, M.
    Gietka, K.
    Golnik, A.
    Kossacki, P.
    Jakubczyk, T.
    Pacuski, W.
    Kruse, C.
    Hommel, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1492873.pdf
    Data publikacji:
    2011-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.67.Pt
    42.70.Qs
    42.79.Fm
    78.66.Hf
    Opis:
    We report on a two-step etching of ZnTe based micropillars. We demonstrate applicability of the technology and we analyze the optical properties of obtained structures. Microphotoluminescence spectra of individual micropillars show a typical mode pattern that confirms a successful growth of photonic structures. The reflectivity and photoluminescence spectra of a planar microcavity measured for various incident angles show that additional side distributed Bragg reflectors will be important for the further enhancement of photon confinement in micropillar cavity.
    Źródło:
    Acta Physica Polonica A; 2011, 120, 5; 877-879
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    MBE Growth and Characterization of a III-V Distributed Bragg Reflectors and InAs Quantum Dots
    Autorzy:
    Rousset, J.
    Słupinski, T.
    Jakubczyk, T.
    Kobak, J.
    Stawicki, P.
    Gołasa, K.
    Babinski, A.
    Nawrocki, M.
    Pacuski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1403611.pdf
    Data publikacji:
    2012-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    78.20.Ci
    78.67.Pt
    68.37.Hk
    Opis:
    We describe the realization and characterization of a distributed Bragg reflectors and InAs quantum dots grown by molecular beam epitaxy. The distributed Bragg reflectors are based on a stack of eight or twenty pairs of GaAs and AlAs layers with a stopband centered at about E_0=1.24 eV (λ_0=1000 nm). The whole structures exhibit a reflectivity coefficient above 90%. The growth rate was monitored in situ by measurement of the oscillations of the thermal emission intensity. The investigations conducted on the InAs quantum dots grown on GaAs show photoluminescence around E=1.25 eV (λ=990 nm). The combination of these two elements results in the realization of a microcavity containing InAs quantum dots and surrounded by 20 pairs of distributed Bragg reflectors.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 6; 984-987
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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