A stable, ultrasensitive and flexible substrate integrated from 1D Ag/α-Fe2O3/SiO2 fibers for practical surface-enhanced Raman scattering detection

Jiangtao Xu, Songmin Shang, Shouxiang Jiang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

6 Citations (Scopus)

Abstract

Conventionally, the surface-enhanced Raman spectroscopy (SERS) measurement is performed by dispersing noble metal nanoparticles onto the target sample directly or assembling noble metal nanoparticles onto a micro-sized substrate. Despite it is flourishing, this method is not adequate for various samples, mainly limited by either a defined confinement of the test position or the complex extraction process of the target sample on the irregularly shaped surface, besides the costive materials, complex and uncontrollable fabricating processes. Herein, we demonstrate that the α-Fe2O3 thin film is decorated with Ag nanoparticles constructed on SiO2 fibers as a flexible SERS-active substrate, which yields a functional optical enhancement of the signal at 532 nm laser excitation. It shows a high enhancement factor of 4.71 × 105, ultrahigh sensitivity of 10−15 M, and excellent signal stability with a relative standard deviation (RSD) of 1.22% and reproducibility with a RSD of 0.258%.

Original languageEnglish
Article number107376
JournalComposites Part B: Engineering
Volume177
DOIs
Publication statusPublished - 15 Nov 2019

Keywords

  • Ag nanoparticles
  • SERS
  • SiO fiber
  • Ultra-high sensitivity
  • α-Fe2O3 thin film

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

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