• DOI:10.3788/COL201513.102401
• Corpus ID: 119449833

Silver hierarchical structures grown on microstructured silicon in chip for microfluidic integrated catalyst and SERS detector

@article{Yan2015SilverHS,
  title={Silver hierarchical structures grown on microstructured silicon in chip for microfluidic integrated catalyst and SERS detector},
  author={Zhao-Xu Yan and Chunhao Li and Yang Luo and Ji-Hong Zhao and Hai Yang and Prabhat Verma and Satoshi Kawata},
  journal={Chinese Optics Letters},
  year={2015},
  volume={13},
  pages={102401-102405},
  url={https://api.semanticscholar.org/CorpusID:119449833}
}

• Zhao-Xu Yan, Chunhao Li, +4 authors S. Kawata
• Published 20 October 2015
• Engineering, Chemistry, Materials Science
• Chinese Optics Letters

In this Letter, silver (Ag) hierarchical nanostructures grown on black silicon (BS) are used as the catalyst and a surface-enhanced Raman scattering (SERS) detector integrated in a microfluid. The BS is fabricated via femtosecond laser ablation in an atmosphere of sulfur hexafluoride, and then hydrogenated with hydrofluoric acid. As formed, the BS substrate directly acts as a reducing template to grow silver hierarchical nano-structures. Particularly, Ag-BS composite micro/nano-structures… 

In this Letter, silver (Ag) hierarchical nanostructures grown on black silicon
(BS) are used as the catalyst and a surface-enhanced Raman scattering (SERS) detector
integrated in a microfluid. The BS is fabricated via femtosecond laser ablation in an
atmosphere of sulfur hexafluoride, and then hydrogenated with hydrofluoric acid. As
formed, the BS substrate directly acts as a reducing template to grow silver
hierarchical nano-structures. Particularly, Ag-BS composite micro/nano-structures can be
in-situ constructed in silicon-based microchannels. These structures
simultaneously serve as integrated catalytic reactors and a SERS substrate for sensing.
The sensitivity is tested to be as low as 10−8  mol/L using Rhodamine
6G.