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An anisotropic Ag@Au nanostructure is fabricated via physical vapor deposition of gold at oblique incidence onto a glass substrate with a preformed silver nanoparticle array. Utilization of silver nanoparticles as a scaffold for subsequent gold deposition makes it possible to control the size and shape of the gold capping layer. The obtained Ag@Au nanostructures are characterized by adjustable absorption bands and linear dichroism. The proposed technique provides for new opportunities in creation of plasmonic nanoparticles with targeted optical characteristics for applications in nanophotonics.
(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.
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Alexandra V. Afanasjeva, Evgeniia O. Soloveva, Igor A. Gladskikh, Tigran A. Vartanyan, Daler R. Dadadzhanov, "Nanovoid irregular array in plasmonic Ag@Au nanostructures," Proc. SPIE 12991, Nanophotonics X, 129911Y (10 June 2024); https://doi.org/10.1117/12.3022540