SERS substrates of Ag nanoparticles decorated Si nanostage with neck for Thiram detection
Abstract Nanosphere lithography enables tunable fabrication of Si nanoarrays (hexagons, stages, cones) on Si (100) by precisely controlling etching time. Specifically, the nanostage arrays, with their high surface area due to neck regions, can absorb more Ag nanoparticles (AgNPs), leading to superior surface enhanced Raman scattering performance through the formation of hotspots. In addition, COMSOL simulations confirm plasmon coupling inter-particle, particle-film, and inter-structure. The linear detection of Thiram (0.05–50 ppm) remains stable within 120 d, meeting practical requirements for pesticide detection and showing potential for food safety applications.
Authors
- Rufei Cui (ORCID: https://orcid.org/0000-0003-2817-6975)
- Renxian Gao
- Kunhao Zhang (ORCID: https://orcid.org/0000-0002-9968-3811)
- Fan Zhang (ORCID: https://orcid.org/0000-0002-3658-9887)
- Yaxin Wang (ORCID: https://orcid.org/0000-0003-1903-1037)
- Yuxia Wang (ORCID: https://orcid.org/0009-0007-2444-4000)
- Xiaoxia Zhong (ORCID: https://orcid.org/0000-0002-5371-7932)
- Fengyi Zhang
- Xiaoyu Zhao (ORCID: https://orcid.org/0000-0002-4006-6296)
- Chengxuan Tang
- Jiahong Wen
- Yongjun Zhang
- H. Ren
Institutions
- Wenzhou Medical University (CN)
- Huainan Normal University (CN)
- Hangzhou Dianzi University (CN)
Publication Details
- Journal
- Journal of Physics D Applied Physics
- Published
- 2025-05-09
- DOI
- https://doi.org/10.1088/1361-6463/add6b0
- Primary Topic
- Gold and Silver Nanoparticles Synthesis and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China