Local Electric Field Enhancement in the Vicinity of Ag Nanoparticles and Their Agglomerates in Zinc-Phosphate and Silicate Glass

IF 0.6 4区材料科学 Q4 MATERIALS SCIENCE, CERAMICS

Glass and Ceramics Pub Date : 2024-05-24 DOI:10.1007/s10717-024-00650-9

V. V. Srabionyan, M. P. Vetchinnikov, D. S. Rubanik, V. A. Durymanov, I. A. Viklenko, L. A. Avakyan, E. M. Zinina, G. Yu. Shakhgildyan, V. N. Sigaev, L. A. Bugaev

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Abstract

Based on calculations, the spatial distribution of the local electric field (LEF) for various structural configurations of silver nanoparticles (NPs) in silicate and zinc-phosphate glasses was studied. The features of this distribution determine the efficiency of energy transfer from plasmonic NPs to rare earth (RE) ions located in the particle vicinity. The mechanism of energy transfer through field enhancement via surface plasmon resonance of particles, which is dominant for NPs of sizes of ≥ 5 nm, is determined by several factors. To clarify their roles and significance, the dependencies of LEF upon the size, spatial distribution, and degree of agglomeration of silver NPs in glass were studied. Comparative analysis of the nature of the field enhancement in places of hypothetical location of RE ions was carried out on the basis of a visual representation of the spatial distribution of the LEF in the vicinity of agglomerates of plasmonic NPs. Based on simulations, the dependencies of LEF intensity enhancement, the spatial distribution of such places in relation to the nearest plasmonic particle, upon the concentration of NPs, their size, degree of agglomeration, and the presence of small (≤ 5 nm) particles in the sample along with the relatively large ones, were determined. The optimal configuration of silver particles in glass for obtaining the maximum average enhancement of LEF intensity per the site of possible location of RE ion is revealed to be an agglomerate of NPs with sizes slightly larger than 25 nm and average distances between particle centers about 30 nm.

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磷酸锌和硅酸盐玻璃中的银纳米粒子及其团聚体附近的局部电场增强

根据计算，研究了硅酸盐和磷酸锌玻璃中不同结构配置的银纳米粒子（NPs）的局部电场（LEF）空间分布。该分布的特征决定了能量从等离子 NPs 向位于粒子附近的稀土 (RE) 离子转移的效率。通过粒子表面等离子体共振增强场的能量传递机制由几个因素决定，对于尺寸≥ 5 nm 的 NPs 而言，这种机制占主导地位。为了明确这些因素的作用和意义，我们研究了 LEF 与玻璃中银 NPs 的尺寸、空间分布和团聚程度的关系。根据等离子 NPs 聚集体附近 LEF 空间分布的直观表示，对 RE 离子假定位置的场增强性质进行了比较分析。在模拟的基础上，确定了 LEF 强度增强的依赖性、这些位置与最近的质子粒子的空间分布关系、NPs 的浓度、它们的大小、聚集程度以及样品中小粒（≤ 5 nm）与相对较大的粒子的存在情况。结果表明，玻璃中银粒子的最佳配置是由尺寸略大于 25 nm、粒子中心之间的平均距离约为 30 nm 的 NPs 组成的团聚体，这样可使每个 RE 离子可能所在位置的 LEF 强度平均增强最大。

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来源期刊

Glass and Ceramics 工程技术-材料科学：硅酸盐

CiteScore

1.00

自引率

16.70%

发文量

审稿时长

6-12 weeks

期刊介绍： Glass and Ceramics reports on advances in basic and applied research and plant production techniques in glass and ceramics. The journal''s broad coverage includes developments in the areas of silicate chemistry, mineralogy and metallurgy, crystal chemistry, solid state reactions, raw materials, phase equilibria, reaction kinetics, physicochemical analysis, physics of dielectrics, and refractories, among others.