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Wyszukujesz frazę "bartnik, J." wg kryterium: Wszystkie pola

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    Wyświetlanie 1-5 z 5
    Tytuł:
    EUV-Induced Nanostructuring of Solids
    Autorzy:
    Bartnik, A.
    Fiedorowicz, H.
    Jarocki, R.
    Kostecki, J.
    Szczurek, A.
    Szczurek, M.
    Wachulak, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1490097.pdf
    Data publikacji:
    2012-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.38.Ph
    82.50.Kx
    81.40.Wx
    Opis:
    In this work results of investigations concerning nanostructuring of polymers and some other solids using a laser-plasma extreme ultraviolet source are presented. The plasma radiation was produced using a gas puff target and focused with a gold-plated grazing incidence ellipsoidal collector. Decomposition process of polymers was investigated using a quadrupole mass spectrometer. Different kinds of micro- and nanostructures created in near-surface layers of the materials were investigated using scanning electron microscope. Forms of the structures depend on a particular material and the extreme ultraviolet exposure. In case of some polymers even a single shot is sufficient for creation of the visible changes in surface morphology. In case of inorganic solids visible changes require usually the exposure with tens or hundreds of extreme ultraviolet pulses.
    Źródło:
    Acta Physica Polonica A; 2012, 121, 2; 445-449
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Creation of Nanostructures on Polymer Surfaces Irradiated with Extreme Ultraviolet Pulses
    Autorzy:
    Bartnik, A.
    Fiedorowicz, H.
    Jarocki, R.
    Kostecki, J.
    Szczurek, A.
    Szczurek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1807534.pdf
    Data publikacji:
    2009-12
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.38.Ph
    82.50.Kx
    81.40.Wx
    Opis:
    A laser-plasma extreme ultraviolet source equipped with grazing incidence and Mo/Si collectors was used for surface modification of selected polymers. Surface morphology after irradiation was investigated. Different forms of nanostructures were obtained depending on polymer and irradiation conditions.
    Źródło:
    Acta Physica Polonica A; 2009, 116, S; S-108-S-110
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Micro- and Nanoprocessing of Polymers Using a Laser Plasma Extreme Ultraviolet Source
    Autorzy:
    Bartnik, A.
    Fiedorowicz, H.
    Jarocki, R.
    Kostecki, J.
    Rakowski, R.
    Szczurek, A.
    Szczurek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/1539081.pdf
    Data publikacji:
    2010-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    52.38.Ph
    82.50.Kx
    81.40.Wx
    Opis:
    Laser plasma with temperature of the order of tens eV can be an efficient source of extreme ultraviolet (EUV). The radiation can be focused using different kind of optics, giving sufficient fluence for some applications. In this work we present results of investigations concerning applications of a laser plasma EUV source based on a double stream gas puff target. The source was equipped with two different grazing incidence collectors. One of them was a multifoil collector, the second one was an axisymmetrical ellipsoidal collector. The multifoil mirror was used mainly in experiments concerning micromachining of organic polymers by direct photo-etching. The experiments were performed for different polymers that were irradiated through a fine metal grid as a contact mask. The smallest element of a pattern structure obtained in this way was 5 μm, while the structure height was 50 μm giving an aspect ratio about 10. The laser-plasma EUV source equipped with the axisymmetrical ellipsoidal collector was used for surface modification of organic polymers and inorganic solids. The surface morphology after irradiation was investigated. Different forms of micro- and nanostructures were obtained depending on material and irradiation conditions.
    Źródło:
    Acta Physica Polonica A; 2010, 117, 2; 384-390
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polycarbonate Polymer Surface Modification by Extreme Ultraviolet (EUV) Radiation
    Autorzy:
    Ahad, I.
    Budner, B.
    Korczyc, B.
    Fiedorowicz, H.
    Bartnik, A.
    Kostecki, J.
    Burdyńska, S.
    Brabazon, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1197673.pdf
    Data publikacji:
    2014-04
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Lg
    81.40.Wx
    81.16.Rf
    81.65.-b
    Opis:
    The degree of the biocompatibility of polycarbonate (PC) polymer used as biomaterial can be controlled by surface modification for various biomedical engineering applications. In the past, PC samples were treated by excimer laser for surface reorganization however associated process alteration of bulk properties is reported. Extreme ultraviolet radiation can be employed in order to avoid bulk material alteration due to its limited penetration. In this study, a 10 Hz laser-plasma EUV source based on a double-stream gas-puff target irradiated with a 3 ns and 0.8 J Nd:YAG laser pulse was used to irradiate PC samples. The PC samples were irradiated with different number of EUV shots. Pristine and EUV treated samples were investigated by scanning electron microscopy and atomic force microscopy for detailed morphological characterization of micropatterns introduced by the EUV irradiation. Associated chemical modifications were investigated by X-ray photoelectron spectroscopy. Pronounced wall-type micro- and nanostructures appeared on the EUV modified surface resulting in a change of surface roughness and wettability.
    Źródło:
    Acta Physica Polonica A; 2014, 125, 4; 924-928
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modification of Polymer Substrates with Extreme Ultraviolet - Potential Application in Cancer Cell Identification
    Autorzy:
    Ahad, I.
    Pabijan, J.
    Pogoda, K.
    Hughes, C.
    Bartnik, A.
    Fiedorowicz, H.
    Lekka, M.
    Brabazon, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/1030640.pdf
    Data publikacji:
    2018-02
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    81.05.Lg
    81.40.Wx
    81.16.Rf
    81.65.-b
    Opis:
    During the last two decades, the development of laboratory scale extreme ultraviolet sources has been intensified due to growing interest in use of extreme ultraviolet photons for various applications in science and technology. In this study, we present a potential application of extreme ultraviolet sources for surface modification of polymers to be used as substrates for cancer cell identification. The surface modification of polytetrafluoroethylene (PTFE) polymer samples was performed by a lab scale compact laser-plasma extreme ultraviolet source based on a double-stream gas-puff target. The gas target was irradiated with a 3 ns/0.8 J Nd:YAG laser pulse at 10 Hz. Reference HCV29 non-malignant transitional epithelium and T24 bladder cancer cells adhesion and proliferation studies on pure and extreme ultraviolet sources modified PTFE surfaces were performed. The extreme ultraviolet modified surfaces demonstrated regular increase in cancer cell proliferation comparing to pristine sample. Initial results indicate that extreme ultraviolet treated substrates can facilitate the identification of cancer cells.
    Źródło:
    Acta Physica Polonica A; 2018, 133, 2; 283-285
    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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