Effect of thermal post-treatment on surface plasmon resonance characteristics of gold nanoparticles formed in glass by UV laser irradiation
Autor: | Juergen Ihlemann, V. V. Pryadchenko, Lusegen A. Bugaev, Sviatoslav Yu Kaptelinin, V. V. Srabionyan, Anna V. Skidanenko, Manfred Dubiel, Jörg Meinertz, Leon A. Avakyan, A. S. Mikheykin, Maximilian Heinz, Kamal G. Abdulvakhidov, G. B. Sukharina, VeniaminA. Durymanov |
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Rok vydání: | 2019 |
Předmět: |
Materials science
Scattering Mechanical Engineering Metals and Alloys Analytical chemistry chemistry.chemical_element 02 engineering and technology Thermal treatment 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry Mechanics of Materials Colloidal gold Sputtering Materials Chemistry Particle Irradiation Surface plasmon resonance 0210 nano-technology Tin |
Zdroj: | Journal of Alloys and Compounds. 803:354-363 |
ISSN: | 0925-8388 |
Popis: | Effects of thermal post treatment and of thickness of the initial gold film coated the silicate glass surface, on localized surface plasmon resonance (SPR) of gold nanoparticles formed in glass by UV laser irradiation were studied to develop effective technique for production of gold nanoparticles and their arrays with required and stable characteristics of SPR. Optical spectra of the obtained Au/glass samples showed that SPR of gold nanoparticles formed by irradiation of glasses sputter coated with gold films of thickness 6–10 nm depends of T-treatment, while irradiation of glass coated with gold film ∼70 nm leads to SPR stable of temperature. The origin of such dependences was studied by the structural analysis of gold nanoparticles in Au/glass samples before and after thermal treatment using XRD, EXAFS methods, TEM-EDX images and direct calculations of optical spectra. It was revealed that the changes or stability of SPR parameters under thermal post-treatment of Au/glass samples depend respectively of the presence or absence of tin atoms in the near-surface region (shell) of the gold particles. Thus, if tin atoms are presented in the shell of gold particles (as in “as prepared” Au/glass samples initially coated with gold films of 6–10 nm) then the leave of tin atoms from the particle's volume during the heating leads to partial dissolution of the particles shell and consequently, to decreasing of the particles size, which in turn leads to the observed changes in SPR. The most probable explanation of the presence of tin atoms in the shell of gold particles formed by irradiation of samples initially coated with gold films of thickness 6–10 nm and their absence in the case of sample with film ∼70 nm was proposed, basing on the difference in the effects of the first laser pulse actions on these films on the tin-bath side of the glass samples. The sizes of coherent scattering region in gold nanoparticles before and after thermal treatment of Au/glass samples were determined and the dependence of these sizes upon the thickness of the gold film coating the sample's surface before laser irradiation was revealed. |
Databáze: | OpenAIRE |
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