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Wyszukujesz frazę "68.60.-p" wg kryterium: Wszystkie pola

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Comparison of Five-Layered ZrO₂ and Single-Layered Ce, Eu, and Dy-Doped ZrO₂ Thin Films Prepared by Sol-Gel Spin Coating Method
    Autorzy:
    Çiçek Bezir, N.
    Evcin, A.
    Kayali, R.
    Özen, M.
    Esen, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031178.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.37.-d
    68.55-a
    68.60-p
    78.20.-e
    81.10.Dn
    71.20.Be
    Opis:
    In order to investigate the influence of the number of layers on the properties of ZrO₂ thin films, we prepared one pure ZrO₂ film sample with five layers and Ce, Eu, and Dy-doped ZrO₂ samples with single layer, by spin-coating sol gel-method. The crystal structures of thin films were determined using X-ray diffraction, morphology of the samples was analyzed by scanning electron microscopy, and the optical properties of the samples were determined by ultraviolet/visible absorbance measurements. The results of these measurements have shown that the concentration of the dopants and the thickness of thin film layers play a vital role in the physical, chemical, and optical properties of the pure and doped ZrO₂ thin films.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 612-616
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of Pure and Doped TiO₂ Thin Films Prepared by Sol-Gel Spin-Coating Method
    Autorzy:
    Çiçek Bezir, N.
    Evcin, A.
    Kayali, R.
    Özen, M.
    Balyaci, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031525.pdf
    Data publikacji:
    2017-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    68.37.-d
    68.55.-a
    68.60.-p
    78.20.-e
    81.10.Dn
    71.20.Be
    Opis:
    In this study, using spin-coating sol-gel method we fabricated TiO₂ thin films, doped with different concentrations (1, 2, and 3 mole %) of Ce, Dy, and Eu. Characterization of the prepared samples was performed by means of the X-ray diffraction, scanning electron microscopy, ultraviolet visible absorption, and differential thermal and thermo gravimetric analysis. X-ray diffraction measurements have shown that in Eu and Dy-doped samples crystal structure consists of mixed rutile and the dominant anatase phases, however the Ce doped samples consist of anatase phase only. Scanning electron microscopy images have revealed that while average thin film thickness of the Dy-doped samples decreases with increasing concentration of Dy, the average film thicknesses of samples doped with Ce and Eu increases with increasing concentrations of these dopants. Ultraviolet visible absorption spectroscopy measurements have shown that while absorbances of the samples doped by 1 and 2 mole % of the dopants have nearly similar properties, these properties differ from each other for 3 mole % of the dopants. Finally, differential thermal and thermo gravimetric analyses have shown that the chemical reactions and weight losses of the samples have occurred at the expected temperatures.
    Źródło:
    Acta Physica Polonica A; 2017, 132, 3; 620-624
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lysozyme Amyloid Fibrils Doped by Carbon Nanotubes
    Autorzy:
    Majorošová, J.
    Tomašovičová, N.
    Mitróová, Z.
    Rajňák, M.
    Girman, V.
    Kopčanský, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030498.pdf
    Data publikacji:
    2018-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    61.48.De
    68.37.Lp
    68.37.-d
    75.60.Ej
    87.14.Ee
    Opis:
    Production of new composites for the creation of modern materials with desired properties is the key feature of nanotechnology. Despite the well known advantages of magnetic nanoparticles, the aim of the present study was to synthesize lysozyme amyloid fibrils from hen egg white and subsequently doped this solution with single walled carbon nanotubes and with the magnetite Fe₃O₄ labelled single walled carbon nanotubes. Transmission electron microscopy and polarization optical microscopy were used to obtain the structural and dimensional information about samples. Measurements of magnetic properties indicate the considerable increase of the saturation magnetization for solutions included the magnetite nanoparticles.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 3; 588-590
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The influence of selected organic compounds on the corrosion of historical glass based on their state of preservation
    Autorzy:
    Greiner-Wronowa, E.
    Świt, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1058515.pdf
    Data publikacji:
    2016-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    89.90.+n
    61.43.Fs
    07.60.Pb
    68.37.-d
    68.37.Hk
    81.70.-q
    07.07.Df
    07.75.+h
    81.40.Np
    Opis:
    The aim of this study was to investigate the influence of selected organic compounds such as acetic acid and formaldehyde on the historical glass objects of corrosion processes. This is a very important problem for the field of conservation and restoration of glass of art. Glass objects exhibited in museum display cases can be suffered by evaporating organic compounds which undergo to reaction with leached glass elements to create corrosion deposit on their surface. The proposed method called glass sensors has been used to identify results of impact of various external factors on the tested glass. Due to aggressive environment for the objects there created corrosion phenomena. Glass sensor were prepared as reproduced XVIII-cent. materials. The current studies were carried out by modern physico-chemical methods such as optical, metallography, scanning electron microscopy, inductively coupled plasma mass spectrometry and the Fourier transform infrared spectrometry. These techniques allow to determine the composition of the corrosion layers as well as their structure. The issues raised in this work have been studied following an interdisciplinary approach. The information obtained by using different techniques provides a valuable source of knowledge about the chemical reactions taking place on the surface of the glass. The results derived from this work are useful for the design and implementation of exhibition recommendations and better planning of conservation tasks.
    Źródło:
    Acta Physica Polonica A; 2016, 130, 6; 1406-1414
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Characterization of Magnetosomes After Exposure to the Effect of the Sonication and Ultracentrifugation
    Autorzy:
    Molčan, M.
    Hashim, A.
    Kováč, J.
    Rajňák, M.
    Kopčanský, P.
    Makowski, M.
    Gojzewski, H.
    Molokáč, M.
    Hvizdák, L.
    Timko, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1368025.pdf
    Data publikacji:
    2014-07
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.07.-b
    75.60.-d
    87.50.Y-
    68.37.-d
    Opis:
    Magnetosomes are intracellular organelles of widespread aquatic microorganisms called Magnetotactic bacteria. At present they are under investigation especially in biomedical applications. This ability depends on the presence of intracellular magnetosomes which are composed of two parts: first, nanometer-sized magnetite $(Fe_{3}O_{4})$ or greigite $(Fe_{3}S_{4})$ crystals (magnetosome crystal), depending on the bacterial species; and second, the bilayer membrane surrounding the crystal (magnetosome membrane). The magnetosomes were prepared by biomineralization process of magnetotactic bacteria Magnetospirillum Magnetotacticum sp. AMB-1. The isolated magnetosome chains (sample M) were centrifugated at speed of 100000 rpm for 4 hours (sample UM) and sonicated at power of 120 W for 3 hours (sample SM), respectively. The prepared suspensions were investigated with respect to morphological, structural and magnetic properties. The results from scanning electron microscopy showed that isolated chains of magnetosomes were partially broken to smaller ones after ultracentrifugation. On the other hand the application of the sonication process caused the formation of individual magnetosomes (unordered in chain). These results were confirmed by coercivity and magnetization saturation measurements.
    Źródło:
    Acta Physica Polonica A; 2014, 126, 1; 198-199
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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