Article Title

Highly effective and reproducible surface-enhanced Raman scattering substrates based on Ag pyramidal arrays

Authors

Yandong Wang, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
Nan Lu, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
Wentao Wang, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
Lingxiao Liu, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
Lei Feng, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
Zhoufang Zeng, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
Haibo Li, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
Weiqing Xu, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China
Zijian Wu, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Wei Hu, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Yanqing Lu, National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, China
Lifeng Chi, State Key Laboratory of Supramolecular Structure and Materials, Jilin University, Changchun 130012, China Physikalisches Institut and Center for Nanotechnology (CeNTech), Westflische Wilhelms-Universitt, D-48149 Münster, Germany

Keywords

SERS, Ag pyramidal array, reproducibility, etching, nanosphere lithography

Abstract

ABSTRACT Close-packed Ag pyramidal arrays have been fabricated by using inverted pyramidal pits on Si as a template and used to generate plentiful and homogeneous surface-enhanced Raman scattering (SERS) hot sites. The sharp nanotip and the four edges of the Ag pyramid result in strong electromagnetic field enhancement with an average enhancement factor (EF) of 2.84 × 107. Moreover, the features of the close-packed Ag pyramidal array can be well controlled, which allows SERS substrates with good reproducibility to be obtained. The relative standard deviation (RSD) was lower than 8.78% both across a single substrate and different batches of substrates.

Graphical Abstract

DOI

https://doi.org/10.1007/s12274-013-0291-0

Publisher

Tsinghua University Press

Recommended Citation

Yandong Wang,Nan Lu,Wentao Wang,Lingxiao Liu,Lei Feng,Zhoufang Zeng,Haibo Li,Weiqing Xu,Zijian Wu,Wei Hu,Yanqing Lu,Lifeng Chi, Highly effective and reproducible surface-enhanced Raman scattering substrates based on Ag pyramidal arrays. NanoRes.2013, 6(3): 159–166