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Wyświetlanie 1-8 z 8
Tytuł:
Electrochemical Impedance of Sn Nanowire Arrays
Autorzy:
Kaya, H.
Aydogmus, E.
Avcu, D.
Powiązania:
https://bibliotekanauki.pl/articles/1218401.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.Gf
81.15.Pq
82.80.Fk
Opis:
In this study, Sn nanowires were produced electrochemically in anodic aluminum oxide membranes. During the deposition process some parameters such as ion content, pH, deposition time, and temperature of solution were kept constant. The scanning electron microscope results showed that the diameters of produced tin nanowires were approximately 300 nm and their lengths were about 8-10 μm. Electrochemical impedance studies of Sn nanowire arrays were also studied by Iviumstat galvanostat/potentiostat system.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 307-309
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetoimpedance Effects in Electrodeposited NiFe Nanowire Array
Autorzy:
Aydogmus, E.
Kaya, H.
Atalay, F.
Atalay, S.
Avcu, D.
Powiązania:
https://bibliotekanauki.pl/articles/1207745.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.Gf
81.15.Pq
75.75.-c
Opis:
In this work, NiFe nanowires were grown in highly ordered porous anodic alumina oxide templates by dc electrodeposition at a pH value of 2.6. Scanning electron microscopy showed that wires have diameters of about 250-310 nm and length 25-30 μm. The energy dispersive X-ray analysis showed that the composition of the nanowires is $Ni_{65}Fe_{35}$. Electrical contacts were made on both sides of the nanowire array and their magnetoimpedance properties were investigated. All the magnetoimpedance curves showed single peak behavior due to the high shape anisotropy. The maximum magnetoimpedance change at the 79 MHz driving current frequency was ≈ 1.45%.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 227-229
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetoresistance of Electrodeposited Co/Cu Multilayer Nanowires
Autorzy:
Avcu, D.
Atalay, F.
Atalay, S.
Kaya, H.
Aydogmus, E.
Powiązania:
https://bibliotekanauki.pl/articles/1401297.pdf
Data publikacji:
2015-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.Gf
81.15.Pq
75.75.-c
Opis:
Co/Cu multilayer nanowires were electrodeposited potentiostatically on highly ordered porous anodic alumina oxide templates. Scanning electron microscopy (SEM) showed that wires have diameters of about 250-300 nm and length of 40-50 μm. Co/Cu multilayer nanowire arrays embedded in anodic alumina oxide were mechanically polished with diamond in a suspension of oil until the wires appeared. Then the top and bottom surfaces of the material were coated with a layer of Au with a thickness of 100 nm for electrical contacts. Magnetic field was applied by an electromagnet and resistance was measured by four point technique.
Źródło:
Acta Physica Polonica A; 2015, 127, 4; 1115-1117
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetoresistance of Electrochemically Produced NiFe and CoNiFe Nanowires
Autorzy:
Avcu, D.
Atalay, F.
Aydogmus, E.
Kaya, H.
Atalay, S.
Powiązania:
https://bibliotekanauki.pl/articles/1215584.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.Gf
81.15.Pq
75.75.-c
Opis:
CoNiFe and NiFe nanowires were electrochemically produced by dc electrodeposition on highly ordered porous anodic alumina oxide templates. Scanning electron microscope images of nanowires after removing the alumina membrane showed that these nanowires are uniform with the diameters of about 220-300 nm and about 25-30 μm length. The energy dispersive X-ray analysis showed that the composition of the nanowires is $Ni_{88}Fe_{12}$, $Co_7Ni_{82}Fe_{11}$. Magnetic field was applied by an electromagnet and resistance was measured by four point technique.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 230-231
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Electrochemical Capacitance of Cobalt Oxide Nanotubes on Nickel Foam
Autorzy:
Yagmur, V.
Atalay, F.
Kaya, H.
Avcu, D.
Aydogmus, E.
Powiązania:
https://bibliotekanauki.pl/articles/1399695.pdf
Data publikacji:
2013-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.De
82.47.Uv
88.80.fh
Opis:
In this study, densely packed $Co_3O_4$ nanotubes for supercapacitors have been obtained by means of chemically depositing cobalt hydroxide within a porous anodic aluminum oxide and then annealed at 360°C. The morphological properties obtained $Co_3O_4$ nanotubes were studied by scanning electron microscopy, the chemical composition was determined by examination of the energy dispersive X-ray spectra. Supercapacitor characteristics such as charging/discharging and impedance (Z) characteristics were also examined.
Źródło:
Acta Physica Polonica A; 2013, 123, 2; 215-217
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Fabrication of NiO Microtubes Using Bacillus subtilis/Bacteria
Autorzy:
Atalay, F.
Asma, D.
Aydogmus, E.
Turanci, H.
Kaya, H.
Powiązania:
https://bibliotekanauki.pl/articles/1195249.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.-b
82.47.Uv
88.80.fh
Opis:
The nickel oxide microtubes with high surface-to-volume ratio have been achieved using the Bacillus subtilis bacteria. Surface properties of the metal-oxide nanostructured materials were investigated by electron microscopy. The surface area of that was also studied by the Brunauer-Emmett-Teller analysis method. The materials were used at the construction of supercapacitor as an electrode active material.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 235-237
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Formation of Free Standing NiO Nanostructures on Nickel Foam for Supercapacitors
Autorzy:
Atalay, F.
Aydogmus, E.
Yigit, H.
Avcu, D.
Kaya, H.
Atalay, S.
Powiązania:
https://bibliotekanauki.pl/articles/1194862.pdf
Data publikacji:
2014-02
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.07.-b
82.47.Uv
88.80.fh
Opis:
In this study, free standing NiO nanostructures for supercapacitors were obtained by means of chemically depositing of nickel oxide on Ni foam and then they were annealed at various temperatures. The morphological properties of densely covered Ni foams were studied by scanning electron microscopy. Supercapacitor characteristics, such as charging/discharging and impedance characteristics, were also examined.
Źródło:
Acta Physica Polonica A; 2014, 125, 2; 224-226
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
An ESR study on 2,4 diaminotoluene exposed to gamma rays and application of machine learning
Autorzy:
Ceylan, Y.
Usta, K.
Yumurtaci Aydogmus, H.
Usta, A.
Ceylan, N.
Aras, E.
Powiązania:
https://bibliotekanauki.pl/articles/1068245.pdf
Data publikacji:
2016-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.66.Uv
36.20.Kd
39.30.+w
33.35.+r
Opis:
The polycrystals of 2,4 diaminotoluene were produced by slow evaporation of solvent. The polycrystalline samples were exposed to ⁶⁰Co gamma rays with dose rate of 0.950 kGy/h, at room temperature, for 12, 24, 48, and 72 hours. The electron paramagnetic resonance measurements were carried out on these samples in the temperature range between 298 K and 400 K. No electron paramagnetic resonance signal was observed in the samples irradiated for 12, 24, 48 hours. Two types of radicals were detected using ESR spectrometer in the sample irradiated for 72 h. These radiation damage centers were called RI and RII. The average values of g and the hyperfine coupling constant were calculated. This study also investigates the potential usage of machine learning methods and aims to test the success of these methods and to select the best method.
Źródło:
Acta Physica Polonica A; 2016, 130, 1; 184-187
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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