Focused-ion-beam-fabricated homogeneous acute-angled Au nanorods for surface-enhanced Raman scattering

Kundan Sivashanmugan, Jiunn-Der Liao, Bernard Haochih Liu

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Well-ordered acute-angled Au nanorod (NR) arrays were fabricated using a focused ion beam (FIB) (fibAu-NR). The angle between the NRs and the substrate was tilted at 30-90°. A fibAu-NR with an angle of less than 90° significantly increased the effect of surface-enhanced Raman scattering, which was evaluated using low-concentration rose bengal (<10-5M) as the molecular test probe. The results show that an angled NR surface produces a strong local electromagnetic effect owing to a large number of Raman active sites. In addition, an optimized fibAu-NR was found to distinguish cyanuric acid in milk solution with good reproducibility.

Original languageEnglish
Article number052402
JournalApplied Physics Express
Volume8
Issue number5
DOIs
Publication statusPublished - 2015 May 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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