Abstract
Herein, we report the experimental and theoretical study on scattering spectra of single-sprouted potato-shaped Au-Ag bimetallic nanoparticles. In detail, first, the sprouted potato-shaped nanoparticles are synthesized using the wet-chemistry method, and the morphology of the nanoparticles is studied using a field emission scanning electron microscope. Moreover, the scattering images and spectra of single nanoparticles of different sizes are captured using a dark field microscope. The finite element method (FEM) simulations are performed on these nanoparticles and investigated the dependence of the far-field scattering spectra and local field distribution on the morphology of the nanoparticles (i.e. size and shape of the sprouts and the nanoparticle bases or cores on which the sprouts are anchored).
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The data that support the findings of this study are available from the corresponding author upon reasonable request.
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Funding
V.R.D. thanks Science and Engineering Research Board (SERB), Government of India, under Grant CRG/2021/002951. G.M.D thanks ENSEMBLE3 Project (MAB/2020/14) which is carried out within the International Research Agendas Programme (IRAP) of the Foundation for Polish Science co-financed by the European Union under the European Regional Development Fund and the Teaming Horizon 2020 program (GA. No. 857543) of the European Commission.
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Sibanisankar Sahoo synthesized and characterized the nanoparticles, and performed the experiment. Gour Mohan Das performed the numerical simulations. Sibanisankar Sahoo, Gour Mohan Das, and Venkata Ramanaiah Dantham wrote the manuscript.
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Sahoo, S., Das, G.M. & Dantham, V.R. Experimental and Numerical Investigation on Plasmonic Properties of Single-Sprouted Potato-Shaped Au-Ag Bimetallic Nanoparticles. Plasmonics 18, 2103–2115 (2023). https://doi.org/10.1007/s11468-023-01931-9
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DOI: https://doi.org/10.1007/s11468-023-01931-9