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Wyszukujesz frazę "nanorods" wg kryterium: Temat

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Nanomechanical properties of metallic fcc nanorods from molecular simulations with the Sutton-Chen force field
    Autorzy:
    Białoskorski, M.
    Rybicki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1933985.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Gdańska
    Tematy:
    nanorods
    nanomechanical properties
    elastic constants
    plasticity
    Opis:
    Basic elastic constants (Young’s modulus, Poisson’s ratio, shear modulus) were determined for several monocrystalline, metallic (Ni, Cu, Pt, Au) nanorods using molecular dynamics with the Sutton-Chen force field. Stress-strain curves were also calculated and discussed.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2012, 16, 1-2; 97-133
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis of Single Crystalline Titanium Oxide and Sodium Titanate Nanorods via Salt-Assisted Ultrasonic Spray Pyrolysis
    Autorzy:
    Hwangbo, Y.
    Yoo, J.-H.
    Lee, Y.-I.
    Powiązania:
    https://bibliotekanauki.pl/articles/352337.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    TiO2
    nanorods
    salt
    Ultrasonic Spray Pyrolysis
    optical properties
    Opis:
    The simple and continuous synthesis of single crystalline anatase titanium dioxide and sodium titanate nanorods by a saltassisted ultrasonic spray pyrolysis method is demonstrated. This method does not require expensive precursors, long reaction time, and physical templates or surfactant. In addition, its continuous nature makes it a suitable method for the large-scale preparation. Moreover, the effect of a salt concentration in a starting solution on material properties, including morphology and phase of the synthesized products was systematically investigated. The synthesized nanorods had one-dimensionality, a single crystalline and the average diameter of 12.3 nm with dual phases of titanium dioxide and sodium titanate by FE-SEM, XRD, HR-TEM as well as FFT-converted SAED pattern analysis.
    Źródło:
    Archives of Metallurgy and Materials; 2017, 62, 2B; 1411-1414
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polypropylene – zinc oxide nanorod hybrid material for applications in separation processes
    Autorzy:
    Jakubiak, Sz.
    Tomaszewska, J.
    Jackiewicz, A.
    Michalski, J.
    Kurzydłowski, K. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/185592.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    filter materials
    nanomaterials
    ZnO nanorods
    materiały filtracyjne
    nanomateriały
    nanopręt ZnO
    Opis:
    Hybrid filter material was obtained via modification of polypropylene (PP) nonwoven with nanosize zinc oxide particles of a high aspect ratio. Modification was conducted as a three-step process, a variant of hydrothermal method used for synthesis of nano-ZnO, adopted for coating three dimensional polymeric nonwoven filters. The process consisted of plasma treatment of nonwoven to increase its wettability, deposition of ZnO nanoparticles and low temperature hydrothermal growth of ZnO rods. The modified nonwovens were investigated by a high resolution scanning electron microscopy (HR-SEM). It has been found that the obtained hybrid filters offer a higher filtration efficiency, in particular for so called most penetrating particle sizes.
    Źródło:
    Chemical and Process Engineering; 2016, 37, 3; 393-403
    0208-6425
    2300-1925
    Pojawia się w:
    Chemical and Process Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Large-Area Sodium Titanate Nanorods Formed On Titanium Surface Via NaOH Alkali Treatment
    Wielkopowierzchniowe nanopręty tlenku tytanu sodu wytworzone na powierzchni tytanu pod wpływem NaOH
    Autorzy:
    Lee, K.
    Yoo, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/354441.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    sodium titanate
    nanorods
    alkali treatment
    SEM
    tytanian sodu
    nanopręty
    obróbka alkaliczna
    Opis:
    Ti surfaces covered with large sodium titanate nanorods act as efficient electrodes for energy conversion and environmental applications. In this study, sodium titanate nanorod films were prepared on a Ti substrate in a 5M NaOH aqueous solution followed by heat treatment. The morphological characterization and the crystal structures of the sodium titanate nanorods were investigated via scanning electron microscopy (SEM), X-ray diffraction (XRD), and energy dispersive spectroscopy (EDS). Thin amorphous sodium titanate layers formed during the alkali-treatment, and sodium titanate nanorods were obtained after heat treatment at a temperature of 700°C. The sodium titanate nanorods obtained at this temperature had a thickness of about 80 nm and a length of 1 μm. The crystal structure of the sodium titanate was identified with the use of Na2Ti5O11. The nanorods were agglomerated at a temperature above 900°C, and large-scale nanorods formed on the Ti surface, which may be used for electrodes for energy conversion applications.
    Źródło:
    Archives of Metallurgy and Materials; 2015, 60, 2B; 1371-1374
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Si/ZnO nanorods with Ag nanoparticles/AZO heterostructures in PV applications
    Autorzy:
    Gwóźdź, K.
    Płaczek-Popko, E.
    Gumienny, Z.
    Zielony, E.
    Pietruszka, R.
    Witkowski, B. S.
    Wachnicki, Ł.
    Gierałtowska, S.
    Godlewski, M.
    Chang, L. B.
    Powiązania:
    https://bibliotekanauki.pl/articles/201432.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    solar cells
    ZnO
    Si
    heterojunction
    nanorods
    nanoparticles
    ogniwa słoneczne
    nanopręty
    nanocząstki
    Opis:
    Our studies focus on test structures for photovoltaic applications based on zinc oxide nanorods grown using a low-temperature hydrothermal method on a p-type silicon substrate. The nanorods were covered with silver nanoparticles of two diameters – 20–30 nm and 50–60 nm – using a sputtering method. Scanning electron microscopy (SEM) micrographs showed that the deposited nanoparticles had the same diameters. The densities of the nanorods were obtained by means of atomic force microscope (AFM) images. SEM images and Raman spectroscopy confirmed the hexagonal wurtzite structure of the nanorods. Photoluminescence measurements proved the good quality of the samples. Afterwards an atomic layer deposition (ALD) method was used to grow ZnO:Al (AZO) layer on top of the nanorods as a transparent electrode and ohmic Au contacts were deposited onto the silicon substrate. For the solar cells prepared in that manner the current-voltage (I-V) characteristics before and after the illumination were measured and their basic performance parameters were determined. It was found that the spectral characteristics of a quantum efficiency exhibit an increase for short wavelengths and this behavior has been linked with the plasmonic effect.
    Źródło:
    Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 3; 529-533
    0239-7528
    Pojawia się w:
    Bulletin of the Polish Academy of Sciences. Technical Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Loading Effect of Ag Nanoparticles on Photocatalytic Activity of TiO2 Nanorod Arrays Prepared by Hydrothermal Method
    Autorzy:
    Lee, Kwangmin
    Yoo, Daeheung
    Zakiyuddin, Ahmad
    Powiązania:
    https://bibliotekanauki.pl/articles/2049271.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    TiO2 nanorods
    Ag nanoparticles
    hydrothermal
    Electrochemical impedance spectroscopy
    UV-Vis spectroscopy
    Opis:
    Rutile-TiO2 nanorod thin films were formed on Ti disks via alkali treatment in NaOH solutions followed by heat treatment at 700°C. Ag nanoparticles were loaded on nanorods using a photo-reduction method to improve the photocatalytic properties of the prepared specimen. The surface characterization and the photo-electrochemical properties of the Ag-loaded TiO2 nanorods were investigated using a field-emission scanning electron microscope (FE-SEM), X-ray photoelectron spectroscopy (XPS), UV-Vis spectroscopy and electrochemical impedance spectroscopy (EIS). The TiO2 nanorods obtained after the heat treatment were 80 to 180 nm thick and 1 μm long. The thickness of the nanorods increased with the NaOH concentration. The UV-Vis spectra exhibit a shift in the absorption edge of the Ag-loaded TiO2 to the visible light range and further narrowing of the bandgap. The decrease in the size of the capacitive loops in the EIS spectra showed that the Ag loading effectively improved the photocatalytic activity of the TiO2 nanorods.
    Źródło:
    Archives of Metallurgy and Materials; 2021, 66, 3; 751-754
    1733-3490
    Pojawia się w:
    Archives of Metallurgy and Materials
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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