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Proceedings Article

Metal-coated Si nanograss as highly sensitive SERS sensors

[+] Author Affiliations
Min Hu, Jing Tang, Fung Suong Ou, Huei Pei Kuo, Shih-Yuan Wang, Zhiyong Li, R. Stanley Williams

Hewlett-Packard Labs. (USA)

Proc. SPIE 7312, Advanced Environmental, Chemical, and Biological Sensing Technologies VI, 73120I (April 30, 2009); doi:10.1117/12.818992
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From Conference Volume 7312

  • Advanced Environmental, Chemical, and Biological Sensing Technologies VI
  • Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz
  • Orlando, Florida, USA | April 13, 2009

abstract

We created novel SERS substrates by metalizing (Ag or Au) Si nanograss fabricated by a Bosch process on single crystalline silicon. We demonstrated that the fabricated SERS substrates are highly sensitive. The sensitivity of the substrates depends on the target molecules, the excitation laser wavelengths and the metal coating on the silicon nanograss. With the optimal excitation condition at 633 nm, an enhancement factor of 6 × 107 can be achieved for trans- 1,2-bis(4-pyridyl)-ethylene (BPE) molecules on the gold coated silicon nanograss substrate.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Min Hu ; Jing Tang ; Fung Suong Ou ; Huei Pei Kuo ; Shih-Yuan Wang, et al.
"Metal-coated Si nanograss as highly sensitive SERS sensors", Proc. SPIE 7312, Advanced Environmental, Chemical, and Biological Sensing Technologies VI, 73120I (April 30, 2009); doi:10.1117/12.818992; http://dx.doi.org/10.1117/12.818992


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