scholarly journals In situ preparation of Ag nanoparticles on silicon wafer as highly sensitive SERS substrate

RSC Advances ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 2887-2891 ◽  
Author(s):  
Xinglong Tu ◽  
Zheng Li ◽  
Jing Lu ◽  
Yanpeng Zhang ◽  
Guilin Yin ◽  
...  
Keyword(s):  
Silicon Wafer ◽  
Ag Nanoparticles ◽  
Sers Substrate ◽  
Surface Modifier ◽  
In Situ Preparation ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

An intensive surface enhanced Raman scattering (SERS) effect is realized by ordered Ag nanoparticles (NPs) in situ grown on silicon wafer directly using (3-aminopropyl) trimethoxysilane (APS) as both the surface modifier and reducing agent.

Electrospun flexible poly(bisphenol A carbonate) nanofibers decorated with Ag nanoparticles as effective 3D SERS substrates for trace TNT detection

The Analyst ◽  
2017 ◽  
Vol 142 (24) ◽  
pp. 4756-4764 ◽  
Author(s):  
Yi Li ◽  
Rui Lu ◽  
Jinyou Shen ◽  
Weiqing Han ◽  
Xiuyun Sun ◽  
...  
Keyword(s):  
Bisphenol A ◽  
Ag Nanoparticles ◽  
Chemical Reduction ◽  
Sers Substrate ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Tnt Detection

A flexible 3D hybrid PC/Ag surface-enhanced Raman scattering (SERS) substrate was fabricated through the combination of electrospinning and in situ chemical reduction.

scholarly journals Development of Effectual Substrates for SERS by Nanostructures-on flexible surfaces

2021 ◽  
Vol 2114 (1) ◽  
pp. 012084
Author(s):  
Hammad R. Humud ◽  
Fatimah Jumaah Moaen
Keyword(s):  
Raman Scattering ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Scattering ◽  
Wave Number ◽  
Plasmonic Nanostructures ◽  
Sers Substrate ◽  
Two Dimensional ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

Abstract The current study examines recent advancements in surface-enhanced Raman scattering (SERS), a technique that employs flexible surfaces as an active substrate, this surfaces consist from two-dimensional thermo-plasmonic grating. With 53 nm Au layer (was deposited on the 2D grating structure of the PDMS by the PVD method). The explosive wire technique was used to preparing Ag nanoparticles that were used for the purpose of SERS. The effect of the plasmonic nanostructures on the absorption spectra and Surface - Enhanced Raman Scattering (SERS) activities was examined. Rhodamine 6G dye was used as a probe molecule. X-Ray diffraction (XRD) was used to examine the structural characteristics of the nanoparticles. The morphology was assessed using Field Emission Scanning Electron Microscopy(FESEM). A twin beam UV-Vis Spectrophotometer was used to measure the absorption of the combined Rh6G dye (concentration 1×10“–6M) with the nanostructures. a Sunshine Raman microscope system and a 50mm objective lens, used for investigating the Raman spectra of the Rh6G combined with nanostructures. The results showed that the enhancement factor (EF) for SERS of R6G (1×M) reached to (2.2×10 3) When using Ag nanoparticles and (0.08 × 103) when R6G deposited directly on the flexible substrates without nanostructures at the wave number (1650 cm−1), we produced a recyclable, homogeneous, and highly sensitive SERS substrate with dependable reproducibility. For the SERS substrate, a surface made up of two-dimensional (2D) flexible grating substrates was chosen to provide multiple modalities in electrical and medicinal applications.

scholarly journals Highly ordered arrays of hat-shaped hierarchical nanostructures with different curvatures for sensitive SERS and plasmon-driven catalysis

Nanophotonics ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Chao Zhang ◽  
Zhaoxiang Li ◽  
Si Qiu ◽  
Weixi Lu ◽  
Mingrui Shao ◽  
...  
Keyword(s):  
Hot Spots ◽  
Hybrid Structure ◽  
Sers Substrate ◽  
Polystyrene Spheres ◽  
Hierarchical Nanostructures ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Narrow Gaps

Abstract Regulation of hot spots exhibits excellent potential in many applications including nanolasers, energy harvesting, sensing, and subwavelength imaging. Here, hat-shaped hierarchical nanostructures with different space curvatures have been proposed to enhance hot spots for facilitating surface-enhanced Raman scattering (SERS) and plasmon-driven catalysis applications. These novel nanostructures comprise two layers of metal nanoparticles separated by hat-shaped MoS2 films. The fabrication of this hybrid structure is based on the thermal annealing and thermal evaporation of self-assembled polystyrene spheres, which are convenient to control the metal particle size and the curvature of hat-shaped nanostructures. Based on the narrow gaps produced by the MoS2 films and the curvature of space, the constructed platform exhibits superior SERS capability and achieves ultrasensitive detection for toxic molecules. Furthermore, the surface catalytic conversion of p-nitrothiophenol (PNTP) to p, p′-dimercaptobenzene (DMAB) was in situ monitored by the SERS substrate. The mechanism governing this regulation of hot spots is also investigated via theoretical simulations.

An in situ approach for facile fabrication of robust and scalable SERS substrates

Nanoscale ◽  
2014 ◽  
Vol 6 (13) ◽  
pp. 7232-7236 ◽  
Author(s):  
Yi-Chung Wang ◽  
Joseph S. DuChene ◽  
Fengwei Huo ◽  
Wei David Wei
Keyword(s):  
High Sensitivity ◽  
Sers Substrate ◽  
Biological Detection ◽  
Sers Substrates ◽  
Widespread Implementation ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Facile Fabrication ◽  
Enhanced Raman Scattering

The widespread implementation of surface enhanced Raman scattering (SERS) techniques for chemical and biological detection requires an inexpensive, yet robust SERS substrate with high sensitivity and reproducibility.

scholarly journals Highly sensitive and reliable SERS probes based on nanogap control of a Au–Ag alloy on silica nanoparticles

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 7015-7021 ◽  
Author(s):  
Xuan-Hung Pham ◽  
Minwoo Lee ◽  
Seongbo Shim ◽  
Sinyoung Jeong ◽  
Hyung-Mo Kim ◽  
...  
Keyword(s):  
Raman Scattering ◽  
Silica Nanoparticles ◽  
Ag Nanoparticles ◽  
Surface Enhanced Raman Scattering ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

We developed highly sensitive surface-enhanced Raman scattering (SERS) probes based on SiO2@Au@Ag nanoparticles (NPs) using the Ag growth onto Au NP seeds method.

Fabrication of a highly sensitive surface-enhanced Raman scattering substrate for monitoring the catalytic degradation of organic pollutants

2015 ◽  
Vol 3 (25) ◽  
pp. 13556-13562 ◽  
Author(s):  
Wei Song ◽  
Wei Ji ◽  
Sanpon Vantasin ◽  
Ichiro Tanabe ◽  
Bing Zhao ◽  
...  
Keyword(s):  
Organic Pollutants ◽  
Degradation Process ◽  
Catalytic Degradation ◽  
Sers Substrate ◽  
Silver Foil ◽  
Electrospinning Technique ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

We have described a simple electrospinning technique combined with a calcination process to fabricate ZnO nanofibers deposited on a silver foil surface. These can be used as a photocatalyst and a SERS substrate for monitoring the catalytic degradation process of organic pollutants.

A novel sensitive and stable surface enhanced Raman scattering substrate based on a MoS2 quantum dot/reduced graphene oxide hybrid system

2018 ◽  
Vol 6 (46) ◽  
pp. 12547-12554 ◽  
Author(s):  
Di Wu ◽  
Jianli Chen ◽  
Yaner Ruan ◽  
Kai Sun ◽  
Kehua Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Molecular Detection ◽  
Sers Substrate ◽  
Stable Surface ◽  
System P ◽  
Reduced Graphene ◽  
Highly Sensitive ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering

A MoS2 QD/rGO nanocomposite is synthesized as a novel highly sensitive and stable surface SERS substrate for dye molecular detection.

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