NDLI: Thermally generated Au-Ag nanostructures with tunable localized surface plasmon resonance as SERS activity substrates.

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Thermally generated Au-Ag nanostructures with tunable localized surface plasmon resonance as SERS activity substrates.

Content Provider	Europe PMC
Author	Ji, Jialin Li, Zhengwang
Copyright Year	2023
Abstract	Various Au–Ag bimetallic alloy nanostructures were obtained as sensitive surface-enhanced Raman scattering (SERS) substrates by changing the thermal annealing sequence. The atomic force microscopy (AFM) and scanning electron microscopy (SEM) results confirm that Au/Ag bimetallic clusters and Ag–Au core-shell like structures can be designed by thermal annealing. The absorption spectra showed that the localized surface plasmon resonance (LSPR) frequency of the annealed Au/Ag bimetallic alloy structure could effectively shift from the near ultraviolet to the visible region. At the same time, the Au/Ag bimetallic alloy films modified by thermal annealing have shown satisfactory performance as SERS substrates. Raman enhancement mechanism of Au–Ag bimetallic alloy films is verified by finite-difference time-domain (FDTD) simulation results.
Journal	Heliyon
Volume Number	9
PubMed Central reference number	PMC10336595
Issue Number	7
PubMed reference number	37449172
e-ISSN	24058440
DOI	10.1016/j.heliyon.2023.e17749
Language	English
Publisher	Elsevier
Publisher Date	2023-06-28
Access Restriction	Open
Rights License	This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). © 2023 The Authors
Subject Keyword	Thermal annealing Red-shift Surface-enhanced Raman scattering Au/Ag bimetallic clusters Ag–Au core-shell
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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