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 (Corresponding Author), Shouxiang Jiang (Corresponding Author)

    Research output: Journal article publicationJournal articleAcademic researchpeer-review

    12 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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