Highly reproducible SERS substrate based on polarization-free Ag nanoparticles decorated SiO2/Si core-shell nanowires array | Zendy

Xiaoying Liu | Zendy; JianAn Huang | Zendy; Bo Yang | Zendy; Xuejin Zhang | Zendy; Yongyuan Zhu | Zendy

Open Access

Highly reproducible SERS substrate based on polarization-free Ag nanoparticles decorated SiO2/Si core-shell nanowires array

Author(s) -

Xiaoying Liu,

JianAn Huang,

Bo Yang,

Xuejin Zhang,

Yongyuan Zhu

Publication year - 2015

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4921943

Subject(s) - nanowire , raman scattering , materials science , nanoparticle , polarization (electrochemistry) , substrate (aquarium) , shell (structure) , nanotechnology , raman spectroscopy , optoelectronics , optics , chemistry , composite material , physics , oceanography , geology

SiO2/Si core-shell nanowires array coated with gap-rich silver nanoparticles were demonstrated as a highly reproducible surface-enhanced Raman scattering (SERS) substrate. SERS detection of a relative standard deviation of 8% for 10−4 M R6G with a spot size of ∼2 μm and 900 spots over an area of 150 × 150 μm2 was reported. The high reproducibility is ascribed to the polarization-independent electrical field distribution among three-dimensional nanowire structure with an optimized thickness of SiO2 shell layer.published_or_final_versio

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