Three-dimensional cavity structure-assisted gold nanoparticles for surface-enhanced Raman scattering applications

IF 2.2 3区物理与天体物理 Q2 OPTICS

Optics Communications Pub Date : 2025-03-21 DOI:10.1016/j.optcom.2025.131784

Yu Wang , Hongyan Zhao , Guangqiang Liu, Cuixia Bi, Sujuan Feng, Tong Shi, Jiacheng Li, Hao Wang

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引用次数: 0

Abstract

The effect of surface-enhanced Raman scattering (SERS) depends on the structure of the SERS substrate, and the combination of special substrate structure and Au/Ag nanoparticles is an effective means for SERS. In this study, the bottom funnel head flower-shaped collapse array structure with unique morphology is prepared by improved anodic aluminum oxide (AAO) method, and gold nanoparticle (AuNPs) layers are embedded in the structure to synthesize composite substrates for high-performance Raman signal enhancement. The experimental conditions such as anodic oxidation time, reaming time, gold plating time and annealing time are discussed in detail with 4-aminothiophenol (4-ATP) as probe molecule, the ultra-low concentration detection with molecular concentration of 10⁻¹³ mol/L can be realized. At the same time, the concentration and signal intensity shows a good linear relationship, and the field enhancement factor is as high as 1.24 × 10⁶. The structure of the substrate shows high repeatability, high sensitivity and high uniformity, which has a broad application prospect in the plasma devices based on anodic alumina.

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来源期刊

Optics Communications 物理-光学

CiteScore

5.10

自引率

8.30%

发文量

681

审稿时长

38 days

期刊介绍： Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.