The size effect of silver nanocubes on gap-mode surface enhanced Raman scattering substrate

  • Kai Wei Tsai
  • , Kundan Sivashanmugan
  • , Chen Hsueh Lin
  • , Po Ju Tsai
  • , Shu Chun Cheng
  • , Yung Chiang Lan
  • , Tsan Yao Chen
  • , Ten Chin Wen

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

This study demonstrates the size effect of silver nanocubes with the namely dimension 50 and 70 nm atop the massed silver surface (denoted, 50-NcIM and 70-NcIM) on surface enhanced Raman scattering (SERS) by using rhodamine 6 G and melamine with the irradiation of 532, 633, and 780 nm lasers. In addition, the NcIM substrate was exhibited a strong SERS effect under 633 and 780 nm laser irradiation. The enhancement factors of 50-NcIM and 70-NcIM samples were reached nearly 109 and 108, respectively. The simulation results show that plasmonic cavities (PC) derived from 50-NcIM and 70-NcIM respectively possess the stronger electromagnetic field density and the larger extended PC area under 633 and 780 nm laser irradiation, interpreting the experimental results well.

Original languageEnglish
Pages (from-to)146-150
Number of pages5
JournalJournal of the Taiwan Institute of Chemical Engineers
Volume69
DOIs
Publication statusPublished - 2016 Dec 1

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering

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