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Updated: May 30, 2026

Aqueous Synthesis of Plasmonic Gold-Tin Alloy Nanoparticles
Published on: March 15, 2024
Equal intensity double plasmon resonance of bimetallic quasi-nanocomposites based on sandwich geometry
V S K Chakravadhanula1, M Elbahri, U Schürmann
1Chair for Multicomponent Materials, Technical Faculty of the CAU Kiel, Kaiserstrasse 2, D-24143 Kiel, Germany.
Abstract:
We report a strategy to achieve a material showing equal intensity double plasmon resonance (EIDPR) based on sandwich geometry. We studied the interaction between localized plasmon resonances associated with different metal clusters (Au/Ag) on Teflon AF (TAF) in sandwich geometry. Engineering the EIDPR was done by tailoring the amount of Au/Ag and changing the TAF thickness. The samples were investigated by transmission electron microscopy (TEM) and UV-visible spectroscopy. Interestingly, and in agreement with the dipole-surface interaction, the critical barrier thickness for an optimum EIDPR was observed at 3.3 nm. The results clearly show a plasmon sequence effect and visualize the role of plasmon decay.
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