Highly reproducible SERS substrate based on polarization-free Ag nanoparticles decorated SiO2/Si core-shell nanowires array
Source abstract
Abstract
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.
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Research context
OpenAlex topics: Gold and Silver Nanoparticles Synthesis and Applications · Quantum Dots Synthesis And Properties · Plasmonic and Surface Plasmon Research
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Affiliations
Nanjing University 1 Key Laboratory of Modern Acoustics and National Laboratory of Solid State Microstructures, School of Physics, , Nanjing 210093, China
University of Hong Kong 2 Department of Electrical and Electronic Engineering, , Hong Kong SAR, China
Funding
Priority Academic Program Development of Jiangsu Higher Education Institutions · State Key Program for Basic Research of China · National Natural Science Foundation of China
References (13)
Show source-provided references
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