Surface-enhanced Raman scattering (SERS)-active substrates from silver plated-porous silicon for detection of crystal violet

Abstract Surface-enhanced Raman scattering (SERS) is a powerful spectroscopic technique for ultrasensitive and selective bio-chemical detection due to its capability of providing “fingerprint” information of molecular structures in low concentrations even at single molecular level. In this work, we present the silver nanoparticles/porous silicon (AgNPs/PSi) hybrid structures as SERS substrates prepared by a fast, straightforward and effective method using the PSi immersion plating in silver nitrate (AgNO3) solution. The nano-silvers can simultaneously grow on the surface and nano-pillars of porous silicon making quasi-three-dimension (quasi-3D) structural SERS substrate that has a large surface area to adsorb moleculars for SERS measurement. The proposed SERS substrate can detect Diphenylamine (DPA) with ultralow concentration of 10-9 M (~0.17 ppb), which would have higher enhancement than 2D surface SERS based on nano-silver deposited on silicon substrate and other electrochemical sensors.

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Fabrication of flexible paper‐based Surface‐enhanced Raman scattering substrate from Au nanocubes monolayer for trace detection of crystal violet on shell

Journal of Raman Spectroscopy ◽

10.1002/jrs.5620 ◽

2019 ◽

Vol 50 (8) ◽

pp. 1074-1084 ◽

Cited By ~ 7

Author(s):

Shuang Lin ◽

Xiang Lin ◽

Xueying Song ◽

Siqingaowa Han ◽

Li Wang ◽

...

Keyword(s):

Raman Scattering ◽

Crystal Violet ◽

Surface Enhanced Raman Scattering ◽

Trace Detection ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

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Surface Enhanced Raman Spectroscopy Detection of Crystal Violet Based on an Excellent Silver Nanoparticles/Silicon Pyramid Arrays Structure

Journal of Nanoelectronics and Optoelectronics ◽

10.1166/jno.2020.2867 ◽

2020 ◽

Vol 15 (11) ◽

pp. 1321-1326

Author(s):

Aning Ma ◽

Wenjing Wei ◽

Zhongqiang Zhang ◽

Sichang Peng ◽

Yurong Wang ◽

...

Keyword(s):

Raman Spectroscopy ◽

Silver Nanoparticles ◽

Raman Scattering ◽

Crystal Violet ◽

Surface Enhanced Raman Scattering ◽

Surface Enhanced Raman Spectroscopy ◽

Label Free ◽

Surface Enhanced ◽

Surface Enhanced Raman ◽

Enhanced Raman Scattering

An efficient surface-enhanced Raman scattering substrate based on silver nanoparticles/silicon pyramid arrays structure is theoretically investigated and experimentally demonstrated. The electric field distributions using finite-element-method are calculated. The surface-enhanced Raman scattering behaviors of sensitivity, uniformity and stability are emphatically discussed and compared by the detection of crystal violet. These theoretical and experimental results reveal that the silver nanoparticles/silicon pyramid arrays substrate is expected to be an effective surface-enhanced Raman scattering platform for label-free sensitive surfaceenhanced Raman spectroscopy detection in areas of biotechnology, medicine and food safety.

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