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Low-temperature catalyzed growth and plasmonic properties of columnar Au-SiO.sub.x./sub. nanocomposite thin films
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SYSNO ASEP 0573864 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Low-temperature catalyzed growth and plasmonic properties of columnar Au-SiOx nanocomposite thin films Author(s) Khmel, S. Ya. (RU)
Starinskiy, S.V. (RU)
Baranov, E.A. (RU)
Zamchiy, A.O. (RU)
Safonov, A.I. (RU)
Shukhov, Y.G. (RU)
Bulgakov, Alexander (FZU-D) ORCIDNumber of authors 8 Source Title Interfacial Phenomena and Heat Transfer. - : Begell House - ISSN 2169-2785
Roč. 11, č. 1 (2023), s. 75-85Number of pages 11 s. Language eng - English Country US - United States Keywords composite nanostructures ; thin films ; gold nanoparticles ; silicon suboxide matrix ; low-temperature catalysis ; pulsed laser deposition ; plasma chemical Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) R&D Projects EF15_003/0000445 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Method of publishing Limited access Institutional support FZU-D - RVO:68378271 UT WOS 001087843900010 EID SCOPUS 85174568598 DOI 10.1615/InterfacPhenomHeatTransfer.2023047643 Annotation The optical properties of noble metal nanoparticles can be efficiently controlled by their incorporation into host matrix films.We report on the fabrication of composite films of gold NPs in a silicon suboxide matrix by a novel approach using a combination of pulsed laser deposition for NP production and gas-jet,electron-beam plasma chemical vapor deposition for low-temperature (300°C) synthesis of a SiOx (x = 0.38–1.55) thin film as a matrix for the NPs.The produced nanocomposite exhibits unexpected plasmonic properties,non-monotonically dependent on the matrix thickness,due to a porous columnar matrix structure grown from the NPs with variable oxygen content along the columns.This implies that low-temperature,gold-catalyzed oxidation of silicon occurs during the structure growth.Calculations based on Mie theory show that the refractive index of the obtained SiOx matrix can be as low as 1.2 at certain film thicknesses. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024 Electronic address https://doi.org/10.1615/InterfacPhenomHeatTransfer.2023047643
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