Temat: spin coating - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Spin-coated chitosan on copolyester substrates
Autorzy:: Niemczyk, Agata
Kaczorowski, Paweł
El Fray, Mirosława
Tematy:: chitosan coating
interfacial interactions
polyester substrate
spin-coating process; Pokaż więcej
Wydawca:: Sieć Badawcza Łukasiewicz - Polskie Towarzystwo Chitynowe
Powiązania:: https://bibliotekanauki.pl/articles/1034958.pdf Link otwiera się w nowym oknie
Opis:: In this work, uniform thin chitosan coatings were spin coated onto copolyester substrate. The use of high concentration acetic acid (50 wt.%) as the chitosan solvent increased the protonation of chitosan amino groups, allowing for greater interactions between the solution and the surface of the substrate. Further, surface oxidation was used to incorporate additional functional groups in the copolyester surface, facilitating solution/substrate interactions. The interfacial interactions between the chitosan solution and copolyester substrate were evaluated by the contact angle measurements.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Pattern replication in polyaniline-polystyrene thin films
Autorzy:: Łużny, W.
Budkowski, Andrzej
Haberko, J.
Bernasik, A.
Rysz, Jakub
Raczkowska, Joanna
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 3.

Tytuł:: Utilization of the spin-coating method to produce elastic composites for applications in biomedical engineering
Autorzy:: Mystkowska, Joanna
Powojska, Anna
Ławrynowicz, Jakub
Tematy:: Elastic composite
Spin-coating
Composite thickness
Thin films; Pokaż więcej
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Powiązania:: https://bibliotekanauki.pl/chapters/58907288.pdf Link otwiera się w nowym oknie
Opis:: The production of elastic composites for applications in biomedical engineering is an interesting and dynamically developing issue. The presented work concerns research on the use of the spin-coating method for the production of flexible composite materials. The work contains a description of experimental methods for testing density and thickness, as well as contact angle of the composites produced by spin-coating. Research was carried out to determine the effect of the spincoating parameters: spin speed and spin time on the properties of the produced composites. Composite materials were made with 10, 15 and 20vol% Al2O3 powder filler in a silicon matrix. The composite samples were prepared at rotational speeds of 1000, 1500 and 2000 rpm and with coating times of 10, 15 and 20 seconds. The results obtained from the tests carried out made it possible to determine the influence of the process parameters on the studied properties of the composites. The paper proves that the parameters of the spin-coating process affect chosen properties of the produced composites. The density for composite with 15vol% filler was of d = 1.52 g/cm³, and for composite with 20vol% filler was d = 1.65 g/cm³. The thickness of the material with 10vol% filler at 1000 rpm and 10 s was 21 μm, while for the composite with 20vol% filler it was of 60 μm. Performed research showed that the spin-coating parameters affected thickness and roughness of the composites, while they had no significant effect on the density and contact angle of tested composites. The content of the powder filler affected the thickness of the prepared composites.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Effect of Cd Doping on Structural and Some Optical Studies of Nano CuO Films Prepared by Sol–Gel Technique
Autorzy:: Kadhim, Raheem G.
Ban, Raheem Saleh Kzar
Tematy:: Cd
CuO
Sol–Gel Spin Coating Technique
Thin Film; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1182823.pdf Link otwiera się w nowym oknie
Opis:: This research deals with the study of the structural and optical properties of CuO and Cd doped CuO nano films in thickness 100nm were deposited on a glass substrate using sol-gel spin coating technique. XRD results indicated that the films are polycrystalline and have monoclinic structure with a preferred orientation along ((111).) ̅ and the grain size increase with increasing concentration Cd. Data of AFM indicate that the surface of films is smooth. From SEM image observed the particles are smallest an even particle distribution on a smooth surface. The optical transition in the CuO and (Cd– doped CuO) thin films are observed to be allowed direct transition. The value of the optical energy gap decreases with increasing of (Cd) for all samples.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Humidity and solvent effects in spin‐coated polythiophene-polystyrene blends
Autorzy:: Goustouridis, D.
Jaczewska, Justyna
Sanopoulou, M.
Bernasik, A.
Budkowski, Andrzej
Rysz, Jakub
Raczkowska, Joanna
Raptis, I.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 6.

Tytuł:: Enhanced photoelectrochemical water splitting activity of porous anodic $WO_3$ photoelectrodes decorated with $FeWO_4$ nanoparticles
Autorzy:: Sulka, Grzegorz
Szczerba, Mateusz
Pisarek, Marcin
Piecha, Daniel
Chatterjee, Piyali
Marzec, Mateusz M.
Uchacz, Tomasz
Opis:: Only a few strategies have been reported to overcome the limitations of tungsten trioxide $(n-WO_{3})$ photoanode fabricated via anodic oxidation of metallic tungsten foil for efficient photoelectrochemical (PEC) water splitting. This work presents a method for synthesizing pure iron tungstate $(p-FeWO_{4})$ nanoparticles (∼37 nm size) via a hydrothermal process, followed by their application as co-catalyst through spin coating onto porous anodic $WO_{3}$ (∼351 nm total thickness). A thin $FeWO_{4}$ layer was essential to ensure sufficient light exposure of the underlaying $WO_{3}$ during front illumination. Due to the high crystallinity of FeWO4 and the favorable band alignment between these two semiconductors, the modified $WO_{3}$ exhibited suppressed charge carrier recombination and enhanced charge separation and transfer. As a result, the modified photoanode achieved a stable photocurrent density up to 1.5 times higher than that of pristine $WO_{3}$ under simulated solar illumination with practically unchanged onset potential. Notably, performance under visible light also improved, although no significant red shift of absorption edge (band gap of ∼2.9 eV) was noted. The results demonstrated high reproducibility, and we emphasize the significance of this approach for $WO_{3}$ photoanodes on opaque substrates, as it should be easily adaptable to $WO_{3}$ electrodes fabricated by any technique.
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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Skocz do pozycji: 7.

Tytuł:: Structural and Optical Properties of CuO Doped (Li) Thin Films Prepared by Sol-Gel Technique
Autorzy:: Kadhim, Raheem G.
Kzar, Kzar
Tematy:: CuO
Li
Sol-gel
spin coating
x-ray diffraction
UV- Visible; Pokaż więcej
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Powiązania:: https://bibliotekanauki.pl/articles/1188084.pdf Link otwiera się w nowym oknie
Opis:: CuO and (Li–doped CuO) thin films have been prepared on glass substrates by sol-gel method using spin coating technique. X-ray diffraction (XRD) results reveal that the deposited CuO and (Li– doped CuO) thin films monoclinic crystal structure and the grain size increase with increasing concentration Li. The optical transition in the CuO and (Li– doped CuO) thin films are observed to be allowed direct transition. The value of the optical energy gap decreases with increasing of (Li) for all samples.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Polyvinylpyrrolidone/Silicon Dioxide Composite Thin Films - Preparation and Analysis of Properties
Autorzy:: Tański, T.
Matysiak, W.
Zaborowska, M.
Tematy:: spin coating
PVP/SiO2
thin films
composite coatings
optical properties; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/355952.pdf Link otwiera się w nowym oknie
Opis:: The purpose of this study was to produce composite thin films with polyvinylpyrrolidone (PVP) matrix with nanoparticles of silicon dioxide (SiO₂ ) as the reinforcing phase (5 and 10%) using spin coating method and to investigate the influence of mass concentration of silica particles and process parameters on the morphology and optical properties of the obtained PVP/SiO₂ nanocomposite coatings. The composite layer topography examination, made using atomic force microscope (AFM), showed the increase of roughness due to the increase of silica mass concentration in thin films. UV-Vis spectroscopy analysis showed that with the increase of SiO₂ nanoparticles in polymer matrix and use of higher rotation speed, the absorbance level decrease. Besides, composite layers with 10% mass concentration relative to polymer concentration were characterized by wider energy band gap, so it can be concluded that obtained nanocomposite thin films can be used as protective layers against UV radiation, with zero absorption in the range of visible light wavelengths.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Characteristics of GZO/IZO Dual-Layer as an Electron Transport Layer in Dye-Sensitized Solar Cell
Autorzy:: Manzari Tavakoli, M. H.
Ahmadi, M.
Sabet, M.
Tematy:: dual-layer
sol-gel
spin coating
thin film
GIZO
solar cell; Pokaż więcej
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Powiązania:: https://bibliotekanauki.pl/articles/353232.pdf Link otwiera się w nowym oknie
Opis:: GZO/IZO semiconductor thin films were prepared on the ITO substrate via sol-gel spin coating method for using in the dye-sensitized solar cells (DSSCs). For this purpose, GZO and IZO thin films were optimized by the percentage of doping gallium and indium in zinc oxide and were studied their electrical, optical and structural properties. After that, the layers with the best performance were selected for use in the DSSCs. The concentration of all solutions for spin coating processes was 0.1 M and zinc oxide has been doped with gallium and indium, with different doping percentages (0, 0.5, 1, 2 and 4 volume percentage). So, by studying the properties of the fabricated thin films, it was found the films with 0.5%GZO and 0.5%IZO have the best performance and hence, the optimized dual-layer (0.5% GZO/0.5% IZO (GIZO)) were prepared and studied their electrical and optical properties. The synthesized optimized dual-layer film was successfully used as the working electrode for dye-sensitized solar cells. The sample with 0.5%IZO shows the 9.1 mA/cm² short-circuit current density, 0.52 V open circuit voltage, 63% fill factor and 2.98% efficiency.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Polymer blends spin-cast into films with complementary elements for electronics and biotechnology
Autorzy:: Rysz, Jakub
Bernasik, Andrzej
Jaczewska, Justyna
Lekka, Małgorzata
Björström-Svanström, Cecilia M.
Awsiuk, Kamil
Moons, Ellen
Budkowski, Andrzej
Zemła, Joanna
Opis:: Versatility of solution-processing strategy based on the simultaneous rather than additive deposition of different functional molecules is discussed. It is shown that spin-cast polymer blends result in films with domains that could form elements with complementary functions of (i) solar cells, (ii) electronic circuitries, and (iii) test plates for protein micro-arrays: Alternating layers, rich in electron-donating polyfluorene and electron-accepting fullerene derivative, result in optimized solar power conversion. Surface patterns, made by soft lithography, align conductive paths of conjugated poly(3-alkylthiophene) in dielectric polystyrene. Proteins, preserving their biologically activity, are adsorbed to hydrophobic domains of polystyrene in hydrophilic matrix of poly(ethylene oxide). The authors report the research progress on structure formation in three polymer blend families, resulting in films with complementary elements for electronics and biotechnology. Blend film structures are determined with secondary ion mass spectrometry, atomic force microscopy, and fluorescence microscopy. In addition, the authors present recent results on (i) structure formation in fullerene derivative/poly(3-alkylthiophene) blends intended for solar cells, (ii) 3-dimensional SIMS imaging of conductive paths of poly(3-alkylthiophene) in dielectric polystyrene, (iii) test plates for multiprotein micro-arrays fabricated with blend films of hydrophobic polystyrene and thermoresponsive poly(N-isopropylacrylamide).
Dostawca treści:: Repozytorium Uniwersytetu Jagiellońskiego

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