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Proceedings Paper

Metal-coated Si nanograss as highly sensitive SERS sensors
Author(s): Min Hu; Jing Tang; Fung Suong Ou; Huei Pei Kuo; Shih-Yuan Wang; Zhiyong Li; R. Stanley Williams
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Paper 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.

Paper Details

Date Published: 1 May 2009
PDF: 6 pages
Proc. SPIE 7312, Advanced Environmental, Chemical, and Biological Sensing Technologies VI, 73120I (1 May 2009); doi: 10.1117/12.818992
Show Author Affiliations
Min Hu, Hewlett-Packard Labs. (United States)
Jing Tang, Hewlett-Packard Labs. (United States)
Fung Suong Ou, Hewlett-Packard Labs. (United States)
Huei Pei Kuo, Hewlett-Packard Labs. (United States)
Shih-Yuan Wang, Hewlett-Packard Labs. (United States)
Zhiyong Li, Hewlett-Packard Labs. (United States)
R. Stanley Williams, Hewlett-Packard Labs. (United States)


Published in SPIE Proceedings Vol. 7312:
Advanced Environmental, Chemical, and Biological Sensing Technologies VI
Tuan Vo-Dinh; Robert A. Lieberman; Günter Gauglitz, Editor(s)

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