NDLI: Multi-Effect Enhanced Raman Scattering Based on Au/ZnO Nanorods Structures.

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Multi-Effect Enhanced Raman Scattering Based on Au/ZnO Nanorods Structures.

Content Provider	Europe PMC
Author	Lin, Yi Zhang, Jun Zhang, Yalan Yan, Sai Nan, Feng Yu, Yanlong
Editor	Botti, Sabina
Copyright Year	2022
Abstract	Surface-enhanced Raman scattering (SERS) was considered a potential spectroscopic technique for applications of molecular detection and has drawn great research interest during the past decade. So far, fabrications of cost-effective SERS substrates with high sensitivity and stability and the corresponding enhanced mechanisms are always among the list of research topics, although great progress has been made. In this work, Au particles were decorated on Si, ZnO film and ZnO nanorod arrays simultaneously by an economical method of ion sputtering, generating three kinds of SERS substrates for R6G detection. The morphology difference of Au particles on different samples and the consequent influence on Raman scattering were studied. The experiment results exhibited that substrates with Au particles decorated on ZnO nanorods had the highest Raman enhancement factor. Furthermore, multi-effect enhanced mechanisms summarized as localized surface plasmon resonance (LSPR) filed coupling, electron transferring induced by LSPR of Au particles and whispering gallery mode (WGM) effect of the ZnO cavity were presented. This work provides a convenient and efficient method of fabricating SERS substrates and indicates that such proper metal/semiconductor composite structures are promising candidates for SERS applications.
Journal	Nanomaterials (Basel, Switzerland)
Volume Number	12
PubMed Central reference number	PMC9655003
Issue Number	21
PubMed reference number	36364559
e-ISSN	20794991
DOI	10.3390/nano12213785
Language	English
Publisher	MDPI
Publisher Date	2022-10-27
Access Restriction	Open
Rights License	Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2022 by the authors.
Subject Keyword	surface-enhanced Raman scattering nano-composite structure Au nanoparticles ZnO nanorod arrays localized surface plasmon resonance whispering gallery mode resonance
Content Type	Text
Resource Type	Article
Subject	Chemical Engineering Materials Science

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