Nanovoids embedded in FIB-fabricated Au/Ag nanorod arrays for ultrasensitive SERS-active substrate

Kundan Sivashanmugan, Jiunn-Der Liao, Chih Kai Yao

研究成果: Article同行評審

11 引文 斯高帕斯(Scopus)

摘要

A focused ion beam (FIB) was employed to fabricate Au/Ag nanorod (NR) arrays (fibAu/Ag-NR). After an annealing process, the fibAu/Ag-NR exhibited a Au/Ag diffused structure or nanovoids (NVs) embedded in NRs preferentially at the Au/Ag interface. With crystal violet (CV) used as the probe molecule, NV-Au/Ag-NRs were found to show an increase in the effect of surface-enhanced Raman scattering. An enhancement of 7 orders of magnitude was obtained at low concentrations of CV. It is most likely that the embedded NVs increase the effective surface area for the interactions between CV molecules and laser light. A strong electromagnetic field effect is presumably generated inside NVs and around NRs.

原文English
文章編號092202
期刊Applied Physics Express
7
發行號9
DOIs
出版狀態Published - 2014 九月 1

All Science Journal Classification (ASJC) codes

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

指紋 深入研究「Nanovoids embedded in FIB-fabricated Au/Ag nanorod arrays for ultrasensitive SERS-active substrate」主題。共同形成了獨特的指紋。

引用此