Nanopillar arrays with nanoparticles fabricated by a femtosecond laser pulse train for highly sensitive SERRS

Qianqian Yang, Xin Li, Lan Jiang, Ning Zhang, Guangming Zhang, Xuesong Shi, Kaihu Zhang, Jie Hu, Yongfeng Lu

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

This work presents a novel method for fabricating repeatable, uniform, large-area, highly sensitive, surfaceenhanced resonance Raman scattering (SERRS) substrates combined with silicon nanopillar arrays and silver nanoparticles. The proposed method consists of two steps: (1) induce periodic ripples in deionized water using a linearly polarized femtosecond laser; and (2) generate dense 80-nm-diameter nanopillar arrays with silver nanoparticles in silver nitrate solution with a 90° rotated polarization, femtosecond double-pulse train. As the pulse delay increases from 0 to 1000 fs, the mean size of the silver nanoparticles reduces, and the average number of nanoparticles increases, which, in turn, increases the enhancement factor of SERRS signals up to 1.1 × 109. Furthermore, melamine (down to 125 ppb) was detected by the fabricated SERRS substrates.

Original languageEnglish (US)
Pages (from-to)2045-2048
Number of pages4
JournalOptics Letters
Volume40
Issue number9
DOIs
StatePublished - Jan 1 2015

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resonance scattering
Raman spectra
nanoparticles
silver
pulses
lasers
melamine
silver nitrates
ripples
augmentation
silicon
polarization
water

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Nanopillar arrays with nanoparticles fabricated by a femtosecond laser pulse train for highly sensitive SERRS. / Yang, Qianqian; Li, Xin; Jiang, Lan; Zhang, Ning; Zhang, Guangming; Shi, Xuesong; Zhang, Kaihu; Hu, Jie; Lu, Yongfeng.

In: Optics Letters, Vol. 40, No. 9, 01.01.2015, p. 2045-2048.

Research output: Contribution to journalArticle

Yang, Q, Li, X, Jiang, L, Zhang, N, Zhang, G, Shi, X, Zhang, K, Hu, J & Lu, Y 2015, 'Nanopillar arrays with nanoparticles fabricated by a femtosecond laser pulse train for highly sensitive SERRS', Optics Letters, vol. 40, no. 9, pp. 2045-2048. https://doi.org/10.1364/OL.40.002045
Yang, Qianqian ; Li, Xin ; Jiang, Lan ; Zhang, Ning ; Zhang, Guangming ; Shi, Xuesong ; Zhang, Kaihu ; Hu, Jie ; Lu, Yongfeng. / Nanopillar arrays with nanoparticles fabricated by a femtosecond laser pulse train for highly sensitive SERRS. In: Optics Letters. 2015 ; Vol. 40, No. 9. pp. 2045-2048.
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AU - Zhang, Kaihu

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