Ordered substrate based on gold film over SiO2 microspheres for increasing the sensitivity of the laser-induced breakdown spectroscopy method in the study of nanoparticles

IF 3.2 2区化学 Q1 SPECTROSCOPY

Spectrochimica Acta Part B: Atomic Spectroscopy Pub Date : 2025-02-18 DOI:10.1016/j.sab.2025.107159

M.A. Shevchenko , A.N. Maresev , M.O. Astafurov , N.V. Tcherniega , S.O. Klimonsky , S.G. Dorofeev , S.F. Umanskaya , V.V. Voronova

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Abstract

In this work, we present an ordered substrate obtained by the vertical deposition of SiO₂ microspheres coated with a gold layer to increase the sensitivity of the Laser-Induced Breakdown Spectroscopy (LIBS) method for analysis of TiO₂ nanoparticles. Plasmonic-ordered-structure-enhanced-LIBS method (POSELIBS) provides enhancement due to localized surface plasmon resonance of an ordered substrate.

Using computer modeling, the dependence of the maximum local field amplification on the excitation wavelength and geometric parameters of the substrate was investigated. Conditions close to resonance were selected to obtain the maximum amplification of the LIBS signal. Measurements were performed for off- and near-resonant ordered substrates, which are consistent with the modeling results. Using ordered substrates, an increase in the intensity of Ti emission lines by more than an order of magnitude, as well as a significant increase in signal stability, has been demonstrated. Optimal particle concentrations for the most effective signal enhancement were also determined. The ordered substrate synthesized via described method is a convenient way for LIBS signal resonance enhancement in a wide range of excitation wavelengths.

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来源期刊

Spectrochimica Acta Part B: Atomic Spectroscopy 物理-光谱学

CiteScore

6.10

自引率

12.10%

发文量

173

审稿时长

81 days

期刊介绍： Spectrochimica Acta Part B: Atomic Spectroscopy, is intended for the rapid publication of both original work and reviews in the following fields: Atomic Emission (AES), Atomic Absorption (AAS) and Atomic Fluorescence (AFS) spectroscopy; Mass Spectrometry (MS) for inorganic analysis covering Spark Source (SS-MS), Inductively Coupled Plasma (ICP-MS), Glow Discharge (GD-MS), and Secondary Ion Mass Spectrometry (SIMS). Laser induced atomic spectroscopy for inorganic analysis, including non-linear optical laser spectroscopy, covering Laser Enhanced Ionization (LEI), Laser Induced Fluorescence (LIF), Resonance Ionization Spectroscopy (RIS) and Resonance Ionization Mass Spectrometry (RIMS); Laser Induced Breakdown Spectroscopy (LIBS); Cavity Ringdown Spectroscopy (CRDS), Laser Ablation Inductively Coupled Plasma Atomic Emission Spectroscopy (LA-ICP-AES) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). X-ray spectrometry, X-ray Optics and Microanalysis, including X-ray fluorescence spectrometry (XRF) and related techniques, in particular Total-reflection X-ray Fluorescence Spectrometry (TXRF), and Synchrotron Radiation-excited Total reflection XRF (SR-TXRF). Manuscripts dealing with (i) fundamentals, (ii) methodology development, (iii)instrumentation, and (iv) applications, can be submitted for publication.