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Wyszukujesz frazę "Krol, A." wg kryterium: Autor


Wyświetlanie 1-7 z 7
Tytuł:
On the Management of Direct and Reflected Sounds in the 5.0 Surround Sound Reproduction System
Autorzy:
Kleczkowski, P.
Król, A.
Małecki, P.
Powiązania:
https://bibliotekanauki.pl/articles/1402174.pdf
Data publikacji:
2015-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
43.38.Md
43.60.-c
43.55.Lb
43.66.Lj
Opis:
Direct and ambient sounds are usually reproduced through the same loudspeakers. In multichannel systems, with the use of anechoic recordings and auralization techniques it is possible to separate these sound components so that they are reproduced via different loudspeakers. Four basic options of management of direct and reflected sounds were investigated in a perceptual experiment. One sound source and the standard 5.0 surround sound system was used. It was found that listeners consistently preferred sound reproduction with direct sound radiated from only one loudspeaker.
Źródło:
Acta Physica Polonica A; 2015, 128, 1A; A-11-A-16
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fluorescence Microscopy of Corrole-Single Silver Nanowire Hybrid Nanostructures
Autorzy:
Czechowski, N.
Olejnik, M.
Nowak-Król, A.
Piątkowski, D.
Heiss, W.
Gryko, D.
Mackowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/1419537.pdf
Data publikacji:
2012-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
33.50.-j
78.67.Uh
73.20.Mf
81.07.Pr
81.07.-b
Opis:
We report on confocal microscopy imaging of hybrid nanostructures composed of silver nanowires and corroles. Both nanomaterials were separated by a 30 nm thick $SiO_2$ spacer in order to inhibit fluorescence quenching. The results show that for such a hybrid nanostructure the average enhancement of the fluorescence intensity reached 2.5. Importantly, the coupling to plasmon excitations in metallic nanowires leaves no effect on the fluorescence spectrum of the organic molecules.
Źródło:
Acta Physica Polonica A; 2012, 122, 2; 333-336
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydroquinone Synthesis of Silver Nanoparticles from Silver Bromide Suspensions
Autorzy:
Król-Gracz, A.
Nowak, P.
Michalak, E.
Dyonizy, A.
Powiązania:
https://bibliotekanauki.pl/articles/1491287.pdf
Data publikacji:
2012-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.-Bc
61.46.Hk
Opis:
The results of research into the preparation of silver nanoparticles using photoreduction in the presence of hydroquinone as the reductant were discussed. Substrates for the synthesis of silver nanoparticles were ultrafine crystalline gelatine-stabilised aqueous suspensions of silver bromide. The influence of the reductant to substrate molar ratio and the medium's pH to the efficient production of silver nanoparticles were studied. The properties of resultant silver particles were examined using UV-Vis spectroscopy. Transmission electron microscopy was used for the photomicrography of silver nanoparticles suspensions.
Źródło:
Acta Physica Polonica A; 2012, 121, 1; 196-199
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Synthesis of Silver Halide Nanosols
Autorzy:
Michalak, E.
Nowak, P.
Król-Gracz, A.
Dyonizy, A.
Powiązania:
https://bibliotekanauki.pl/articles/1491302.pdf
Data publikacji:
2012-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.-b
Opis:
The aim of this work was to establish the average size of silver halide nanosols. The method applied was based on the optical turbidance measurements in real time of crystallization process. Dilute turbid suspensions of silver bromide, chloride and iodide stabilized by excess of halide ions and gelatin were measured over wavelength range from 450 nm to 600 nm. Experimental results were compared with the scattering theory of Rayleigh. Relation between dosing rate of reactants to dispersion system and size of obtained silver halide crystals was investigated. Interest in crystalline gelatine-stabilised aqueous suspensions of silver halide is due to their application as a substrate for the synthesis of silver nanoparticles.
Źródło:
Acta Physica Polonica A; 2012, 121, 1; 200-202
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies of the Magnetic Axis Switching in Magnetite
Autorzy:
Król, G.
Kusz, J.
Tarnawski, Z.
Kąkol, Z.
Tabiś, W.
Kozłowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/2046773.pdf
Data publikacji:
2006-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
71.30.+h
61.50.Ks
75.30.Gw
Opis:
The influence of the external magnetic field on magnetic and crystallographic structure of magnetite was studied. We have confirmed, by means of vibrating sample magnetometer measurements, that external magnetic field can switch the easy magnetic axis to the new crystallographic direction. We have also proved by the direct observation of the crystalline structure that this phenomenon is strictly related to the crystallographic structure relaxation.
Źródło:
Acta Physica Polonica A; 2006, 109, 4-5; 601-605
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Relative Reflection Difference as a Method for Measuring the Thickness of the Exfoliated MoSe₂ Layers
Autorzy:
Łempicka, K.
Norowski, K.
Grzeszczyk, M.
Król, M.
Lekenta, K.
Babiński, A.
Piętka, B.
Szczytko, J.
Powiązania:
https://bibliotekanauki.pl/articles/1033778.pdf
Data publikacji:
2017-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
63.20.dd
78.20.Ci
78.30.-j
78.66.Li
Opis:
We propose a method for measuring the thickness of the exfoliated MoSe₂ layers deposited on Si/SiO₂ substrate, based on the reflectance measurements performed with laser light illumination at two different wavelengths: red and green from confocal microscope at room temperature. We demonstrate the correlation between the number of layers in a flake and the value of its relative reflection difference. We applied the transfer matrix method to calculate the reflectivity and verify our experimental results. The approach proposed by us allows for fast and automatic verification of the exfoliated MoSe₂ layers thickness on large areas of the substrate.
Źródło:
Acta Physica Polonica A; 2017, 132, 2; 316-318
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Studies of the Verwey Transition in Magnetite
Autorzy:
Tarnawski, Z.
Wiecheć, A.
Madej, M.
Nowak, D.
Owoc, D.
Król, G.
Kąkol, Z.
Kolwicz-Chodak, L.
KozŁowski, A.
Dawid, T.
Powiązania:
https://bibliotekanauki.pl/articles/2041527.pdf
Data publikacji:
2004-11
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
61.18.Bn
75.40.-s
71.20.Lp
Opis:
Studies of the specific heat and simultaneous AC magnetic susceptibility (ρ') and electric resistance of stoichiometric magnetite single crystal are presented. The temperature hysteresis of the Verwey transition is of 0.03 K found from the specific heat data confirming its first-order character. The continuous temporal change of ρ' at T$\text{}_{V}$ can be switched off by an external magnetic field without affecting the transition. The electrical resistance decreases continuously with increasing temperature with a rapid change of slope at the point when the phase transition is completed. It was concluded that the magnetic degrees of freedom do not actively participate in the transition and that the entropy released at T$\text{}_{V}$ may come from ordering electrons.
Źródło:
Acta Physica Polonica A; 2004, 106, 5; 771-775
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-7 z 7

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