Hierarchical micro/nanostructured TiO2/Ag substrates based on femtosecond laser structuring: A facile route for enhanced SERS performance and location predictability

doi:10.1016/j.apsusc.2019.01.257

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	Hierarchical micro/nanostructured TiO2/Ag substrates based on femtosecond laser structuring: A facile route for enhanced SERS performance and location predictability
	J.L.Lu; J.J.Yang; S.C.Singh; Z.B.Zhan; Z.Yu; W.Xin
	2019
发表期刊	Applied Surface Science
ISSN	0169-4332
卷号	478 页码:737-743
摘要	Hierarchical micro/nanostructured TiO2/Ag substrates for surface-enhanced Raman scattering (SERS) application are fabricated by depositing Ag nanoparticles on the surface of TiO2 hierarchical micro/nanostructures, which are formed by combining femtosecond laser structuring with scalable hydrothermal treatment. Our results show that the morphology of hierarchical micro/nano TiO2/Ag architectures can significantly influence SERS performance. Compare with one-dimensional TiO2/Ag nanostructures hydrothermally fabricated on laser untreated Ti surface, a four-fold enhancement is shown in the SERS signal with excellent reproducibility. Most importantly, enhancement is significantly stronger in the valleys of our microstructures than on the hills due to geometrical orientation of nanostructures on the surface of the microstructure. The site predictability for SERS enhancement is one of the major roadblock for SERS applications. Present study provides an effective way to enhance the site predictability for optimal SERS in addition to a significant enhancement in signal strength.
关键词	Femtosecondlaser,Chemical treatment,Hierarchical micro/nanostructured,TiO2/Ag,SERS,surface,nanoparticles,arrays,spectroscopy,pollutants,foil,Chemistry,Materials Science,Physics
DOI	10.1016/j.apsusc.2019.01.257
收录类别	SCI ; EI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/63158
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	J.L.Lu,J.J.Yang,S.C.Singh,et al. Hierarchical micro/nanostructured TiO2/Ag substrates based on femtosecond laser structuring: A facile route for enhanced SERS performance and location predictability[J]. Applied Surface Science,2019,478:737-743.
APA	J.L.Lu,J.J.Yang,S.C.Singh,Z.B.Zhan,Z.Yu,&W.Xin.(2019).Hierarchical micro/nanostructured TiO2/Ag substrates based on femtosecond laser structuring: A facile route for enhanced SERS performance and location predictability.Applied Surface Science,478,737-743.
MLA	J.L.Lu,et al."Hierarchical micro/nanostructured TiO2/Ag substrates based on femtosecond laser structuring: A facile route for enhanced SERS performance and location predictability".Applied Surface Science 478(2019):737-743.

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