Detection and Identification of Pesticides in Fruits Coupling to an Au-Au Nanorod Array SERS Substrate and RF-1D-CNN Model Analysis.

Pengxing Sha, Chushu Zhu, Tianran Wang, Peitao Dong, Xuezhong Wu

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Article in Nanomaterials (Basel, Switzerland), 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed

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1 citing paper in PubMed.

Single-Molecule Detection Technologies: Advances in Devices, Transduction Mechanisms, and Functional Materials for Real-World Biomedical and Environmental Applications.Biosensors · 2025
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Authors and funding

5 authors.

Pengxing ShaColleage of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.

Chushu ZhuColleage of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.

Tianran WangColleage of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.

Peitao DongColleage of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.ORCID 0000-0002-8173-0819

Xuezhong WuColleage of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China.

Funding

National Natural Science Foundation of China 51475468National Natural Science Foundation of China 51605486

6 · The paper itself

Abstract

In this research, a method was developed for fabricating Au-Au nanorod array substrates through the deposition of large-area Au nanostructures on an Au nanorod array using a galvanic cell reaction. The incorporation of a granular structure enhanced both the number and intensity of surface-enhanced Raman scattering (SERS) hot spots on the substrate, thereby elevating the SERS performance beyond that of substrates composed solely of an Au nanorod. Calculations using the finite difference time domain method confirmed the generation of a strong electromagnetic field around the nanoparticles. Motivated by the electromotive force, Au ions in the chloroauric acid solution were reduced to form nanostructures on the nanorod array. The size and distribution density of these granular nanostructures could be modulated by varying the reaction time and the concentration of chloroauric acid. The resulting Au-Au nanorod array substrate exhibited an active, uniform, and reproducible SERS effect. With 1,2-bis(4-pyridyl)ethylene as the probe molecule, the detection sensitivity of the Au-Au nanorod array substrate was enhanced to 10

Indexed as

1D-CNN model analysisAu–Au nanorod arraygalvanic cell reactionpesticidesurface-enhanced Raman scattering

Identifiers

PMID38668211

DOI10.3390/nano14080717

PMCPMC11053652

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