Localized Surface Plasmon Resonance of Ag-SiO2 Core–Shell Nanowire Tetramers

IF 4.3 4区物理与天体物理 Q2 CHEMISTRY, PHYSICAL

Plasmonics Pub Date : 2025-02-03 DOI:10.1007/s11468-025-02802-1

Jijun Ding, Ziyang Liu, Wenkai Li, Caiwang Yin, Haixia Chen

{"title":"Localized Surface Plasmon Resonance of Ag-SiO2 Core–Shell Nanowire Tetramers","authors":"Jijun Ding, Ziyang Liu, Wenkai Li, Caiwang Yin, Haixia Chen","doi":"10.1007/s11468-025-02802-1","DOIUrl":null,"url":null,"abstract":"<div>Ag@SiO2 polymer structure model is established with the assistance of COMSOL software. The effects of SiO2-free layer configuration and different SiO2 thickness on the electric field distribution, absorption spectrum, and far-field radiation in the gap of different Ag nanostructures were calculated the simulation results demonstrate that the Ag@SiO2 polymer structure exhibits two plasmon resonance modes: low energy and high energy. With an increase in SiO2 thickness, the high energy mode is redshifted, while the low energy mode is blue shifted, and the peak of the absorption spectrum changes with the thickness of the SiO2 layer. The alteration of the tetramer configuration enables the attainment of an octupole resonance mode, giving rise to a novel resonance absorption peak within the wavelength range of 400 to 500 nm. The maximum peak offset observed is 82 nm, a phenomenon that results in the broadening of the polymer's absorption spectrum range. This development provides a solid theoretical foundation for high-wavelength resonance coupling.</div>","PeriodicalId":736,"journal":{"name":"Plasmonics","volume":"20 8","pages":"5721 - 5733"},"PeriodicalIF":4.3000,"publicationDate":"2025-02-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasmonics","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1007/s11468-025-02802-1","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

Ag@SiO₂ polymer structure model is established with the assistance of COMSOL software. The effects of SiO₂-free layer configuration and different SiO₂ thickness on the electric field distribution, absorption spectrum, and far-field radiation in the gap of different Ag nanostructures were calculated the simulation results demonstrate that the Ag@SiO₂ polymer structure exhibits two plasmon resonance modes: low energy and high energy. With an increase in SiO₂ thickness, the high energy mode is redshifted, while the low energy mode is blue shifted, and the peak of the absorption spectrum changes with the thickness of the SiO₂ layer. The alteration of the tetramer configuration enables the attainment of an octupole resonance mode, giving rise to a novel resonance absorption peak within the wavelength range of 400 to 500 nm. The maximum peak offset observed is 82 nm, a phenomenon that results in the broadening of the polymer's absorption spectrum range. This development provides a solid theoretical foundation for high-wavelength resonance coupling.

查看原文本刊更多论文

Ag-SiO2核壳纳米线四聚体的局部表面等离子体共振

利用COMSOL软件建立聚合物结构模型Ag@SiO2。计算了无SiO2层构型和不同SiO2厚度对不同银纳米结构间隙电场分布、吸收光谱和远场辐射的影响。仿真结果表明：Ag@SiO2聚合物结构表现出低能和高能两种等离子体共振模式。随着SiO2厚度的增加，高能量模式发生红移，低能量模式发生蓝移，吸收光谱峰随SiO2厚度的变化而变化。四聚体结构的改变能够实现八极共振模式，从而在400至500 nm的波长范围内产生新的共振吸收峰。观察到的最大峰偏移为82 nm，这一现象导致聚合物的吸收光谱范围变宽。这一发展为高波长共振耦合提供了坚实的理论基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Plasmonics 工程技术-材料科学：综合

CiteScore

5.90

自引率

6.70%

发文量

164

审稿时长

2.1 months

期刊介绍： Plasmonics is an international forum for the publication of peer-reviewed leading-edge original articles that both advance and report our knowledge base and practice of the interactions of free-metal electrons, Plasmons. Topics covered include notable advances in the theory, Physics, and applications of surface plasmons in metals, to the rapidly emerging areas of nanotechnology, biophotonics, sensing, biochemistry and medicine. Topics, including the theory, synthesis and optical properties of noble metal nanostructures, patterned surfaces or materials, continuous or grated surfaces, devices, or wires for their multifarious applications are particularly welcome. Typical applications might include but are not limited to, surface enhanced spectroscopic properties, such as Raman scattering or fluorescence, as well developments in techniques such as surface plasmon resonance and near-field scanning optical microscopy.