Improved versatile SERS spheroid end-facet optical fiber substrate based on silver nano-dendrites directly planted with gold nanoparticles using dual-laser assisted for pesticides detection

Pham, Thanh Binh; Hoang, Thi Hong Cam; Chuc, Nguyen Van; Vũ, Đức Chính; Bui, Huy; Pham, Van Hoi

doi:10.1016/j.optmat.2022.112196

Cited by 8 publications

(1 citation statement)

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“…Numerous significant studies have employed AuNSs on optical fiber end facets to design SERS probes, ,,,,,,− with many reports focusing on enhancing SERS sensitivity by improving structural uniformity and reproducibility. While structural uniformity and reproducibility are recognized as important, the selection of an optimal nanoparticle size, in accordance with the chosen laser wavelengths, is equally crucial.…”

Section: Discussionmentioning

confidence: 99%

A Comprehensive Numerical Study on Fiber Optic SERS Probe Design

Kim,

Gomes,

De Koninck

et al. 2024

J. Phys. Chem. C

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A fiber optic surface-enhanced Raman spectroscopy (SERS) probe has emerged as a promising solution for remote and label-free chemical sensing. However, unlocking its full potential still requires enhancing the SERS enhancement factors, which depends on two key aspects: improving the local field enhancement and efficient collection of Raman dipole moment through the fiber. Meeting this challenge requires a thorough understanding of parameters influencing the sensitivity of fiber optic SERS probes and the finding of the most effective configuration for maximizing SERS sensitivity. In our extensive numerical study, we delve into the intricate interplay among plasmonic nanostructures, excitation wavelength, fiber material properties, and SERS enhancement within a water environment. By unraveling the synergistic effects of these elements, our research pinpoints the customized parameter set that achieves maximum performance across diverse variables tailored specifically for remote chemical sensing applications.

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Section: Discussionmentioning

confidence: 99%

A Comprehensive Numerical Study on Fiber Optic SERS Probe Design

Kim,

Gomes,

De Koninck

et al. 2024

J. Phys. Chem. C

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Three‐dimensional plasmonic substrate as surface‐enhanced Raman spectroscopy (SERS) tool for the detection of trace chemicals

Kaur,

Das

2024

J Raman Spectroscopy

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A three‐dimensional (3D) plasmonic substrate was developed using gold nanorods (GNRs) onto a tapered fiber surface using optical tweezing. To determine the efficacy of the substrate, Raman spectra of two toxic chemicals Rhodamine 6G (R6G) and Crystal Violet (CV) were studied. The “dip and dry” method was used to adsorb the chemicals along the tapered fiber length. The minimum concentration detected for CV and R6G was 10−12 M. We have reported the characteristics and unique features of the manufactured substrate.

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