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Wyszukujesz frazę "Drewniak, S. E." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Studies of physicochemical properties of graphite oxide and thermally exfoliated/reduced graphene oxide
    Autorzy:
    Drewniak, S. E.
    Pustelny, T. P.
    Muzyka, R.
    Plis, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/779581.pdf
    Data publikacji:
    2015
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    graphite oxide
    thermally exfoliated/reduced graphene oxide
    topography investigations
    Raman spectroscopy
    elemental analysis
    Opis:
    The aim of the experimental research studies was to determine some electrical properties of graphite oxide and thermally exfoliated/reduced graphene oxide. The authors tried to interpret the obtained physicochemical results. For that purpose, both resistance measurements and investigation studies were carried out in order to characterize the samples. The resistance was measured at various temperatures in the course of composition changes of gas atmospheres (which surround the samples). The studies were also supported by such methods as: scanning electron microscopy (SEM), Raman spectroscopy (RS), atomic force microscopy (AFM) and thermogravimetry (TG). Moreover, during the experiments also the elemental analyses (EA) of the tested samples (graphite oxide and thermally exfoliated/reduced graphene oxide) were performed.
    Źródło:
    Polish Journal of Chemical Technology; 2015, 17, 4; 109-114
    1509-8117
    1899-4741
    Pojawia się w:
    Polish Journal of Chemical Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigations of SAW Structures with Oxide Graphene Layer to Detection of Selected Gases
    Autorzy:
    Drewniak, S.
    Pustelny, T.
    Setkiewicz, M.
    Maciak, E.
    Urbańczyk, M.
    Procek, M.
    Opilski, Z.
    Jagiello, J.
    Lipinska, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1399339.pdf
    Data publikacji:
    2013-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    42.81.Pa
    82.47.Rs
    07.07.Df
    Opis:
    In this paper we present the results of investigations of graphene oxide layers using the SAW structure (structure with surface acoustic wave propagated) exposed to the affect of low concentrations of hydrogen and nitrogen dioxide in synthetic air. During the measurements, the differential signal (from two measuring channels) was recorded. The sensing graphene oxide layer was deposited only on first channel, whereas the second channel was not covered by any additional layer. The tests were made with various concentrations of the analyzed gases and at various temperatures of the sensing structure during the measurements. Analyses were performed with special emphasis on the time response of the sensor structure to changes in the gas atmosphere.
    Źródło:
    Acta Physica Polonica A; 2013, 124, 3; 402-405
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gas sensors based on nanostructures of semiconductors ZnO and TiO2
    Autorzy:
    Pustelny, T.
    Procek, M.
    Maciak, E.
    Stolarczyk, A.
    Drewniak, S.
    Urbańczyk, M.
    Setkiewicz, M.
    Gut, K.
    Opilski, Z.
    Powiązania:
    https://bibliotekanauki.pl/articles/201719.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    gas sensors
    nanostructures
    TiO2
    ZnO
    Opis:
    The paper presents a resistance structures with sensor layers based on nanostructures elaborated on the base of TiO2 and ZnO. The structures were tested concerning their sensitivities to the effects of nitrogen dioxide in the atmosphere of synthetic air. The TiO2 and ZnO nanostructures played the role of sensor layers. Investigations have proved that the elaborated resistance structures with TiO2 and ZnO layers are sensitive to the presence of NO2 in the atmosphere of synthetic air. The resistance of the structure amounted to about 20 in the case of ZnO structures and to about 200 in the case of TiO2 structures. The investigations confirmed that resistance structures with ZnO and TiO2, exposed to the effect of nitrogen dioxide in the atmosphere of synthetic air changes their resistances relatively fast. This indicates that such structures might be practically applied in sensors of nitrogen dioxide ensuring a short time of response.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 4; 853-859
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The sensitivity of sensor structures with oxide graphene exposed to selected gaseous atmospheres
    Autorzy:
    Pustelny, T.
    Drewniak, S.
    Setkiewicz, M.
    Maciak, E.
    Urbańczyk, M.
    Procek, M.
    Gut, K.
    Opilski, Z.
    Jagiello, J.
    Lipinska, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/200229.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    graphene
    graphene oxide
    gas sensors
    resistive sensors
    Opis:
    The paper presents the results of investigations on the resistive structure with a graphene oxide (GO) sensing layer. The effects of dangerous gases (hydrogen and nitrogen dioxide) on the structure were studied; the resistance changes were examined during the flow of the selected gas in the atmosphere of synthetic air. Measurements were performed with a special emphasis on the detection of low concentrations of the analyzed gases. The reactions of the sensing structure to the effect of nitrogen and synthetic air at different humidity were also tested. Much attention was also paid to the fast response of the sensor to the changes in the gas atmosphere. The thin palladium layer (~2 nm) has been applied in order to improve the sensing properties of the structure. The investigations were performed in the temperature range from RT to 120°C and the analyzed gases in synthetic air were batched alternately with pure synthetic air.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 3; 705-710
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Influence of Humidity on the Resistance Structures with Graphene Sensor Layer
    Autorzy:
    Pustelny, T.
    Setkiewicz, M.
    Drewniak, S.
    Maciak, E.
    Stolarczyk, A.
    Procek, M.
    Urbańczyk, M.
    Gut, K.
    Opilski, Z.
    Pasternak, I.
    Strupinski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/1418032.pdf
    Data publikacji:
    2012-11
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    07.07.Df
    42.81.Pa
    82.47.Rs
    Opis:
    In the paper the results of investigations are presented concerning the influence of humidity of air on the resistance of a gas sensor structure with a graphene layer. The affects of nitrogen dioxide and humidity action on graphene were studied. We indicated that humidity might play an important role in determining the gas sensing properties of the graphene layer. In the paper it has been shown that in the case of a nitrogen oxide sensor, the reaction of $NO_2$ with water vapour can generate permanent defects in graphene.
    Źródło:
    Acta Physica Polonica A; 2012, 122, 5; 870-873
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The sensibility of resistance sensor structures with graphene to the action of selected gaseous media
    Autorzy:
    Pustelny, T.
    Setkiewicz, M.
    Drewniak, S.
    Maciak, E.
    Stolarczyk, A.
    Urbańczyk, M.
    Procek, M.
    Gut, K.
    Opilski, Z.
    Pasternak, I.
    Strupinski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/200915.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    graphene
    resistance
    sensor
    hydrogen sensor
    nitrogen dioxide sensor
    Opis:
    The paper presents resistance sensor structures with a graphene sensing layer. The structures were tested concerning their sensitivity to the affects of hydrogen, nitrogen dioxide and steam in an atmosphere of a synthetic air. Investigations have proved that resistance structures with a graphene layer are sensitive to the presence of the tested gases. The resistance of the structures amounted to about 10Ω, whereas changes in the resistances affected by the external gaseous medium were contained within the range of a several mΩ. The investigations confirmed that the resistance structures with graphene exposed to the affect of hydrogen in atmosphere of synthetic air change their resistances practically at once (within the order of only a few seconds). This indicates that such structures might be practically applied in sensors of hydrogen ensuring a short time of response.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 2; 293-300
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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