Silver nanoparticles produced by laser ablation for a study on the effect of SERS with low laser power on N719 dye and Rhodamine-B

MRS Advances ◽  
2019 ◽  
Vol 4 (11-12) ◽  
pp. 723-731
Author(s):  
Nelson Fabian Villegas Borrero ◽  
José Maria Clemente da Silva Filho ◽  
Viktor A. Ermakov ◽  
Francisco Chagas Marques
Keyword(s):  
Thin Film ◽  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Laser Ablation ◽  
Rhodamine B ◽  
Laser Power ◽  
Surface Enhanced Raman Spectroscopy ◽  
Localized Surface Plasmon ◽  
Optical Absorption Spectroscopy ◽  
Ag Nps

ABSTRACTThe effect of surface-enhanced Raman spectroscopy (SERS) was investigated in N719 dye thin films deposited on silicon wafer with a thin film of silver nanoparticles (Ag-NPs) fabricated by laser ablation in an aqueous solution, using a NdYAG laser (λ = 1064nm). Optical absorption spectroscopy of the Ag-NPs colloidal solution shows an absorption peak at λ = 400nm, associated with a localized surface plasmon resonance in the Ag-NPs. Scanning electron microscopy (SEM) reveals that these NPs have an approximately spherical shape, with their diameter being tunable by laser power intensity. Raman spectroscopy measurements were performed using low laser power to avoid damage to the N719 dye films. Thus, a small Raman signal is obtained. The Raman intensity was greatly increased when the N719 film was deposited on a substrate with a thin film of Ag-NPs due to the SERS effect. The process was also used in Rhodamine-B to clearly demonstrate the SERS effect obtained by the use of these NPs produced by laser ablation.

scholarly journals Use of aminothiophenol as an indicator for the analysis of silver nanoparticles in consumer products by surface-enhanced Raman spectroscopy

The Analyst ◽  
2016 ◽  
Vol 141 (18) ◽  
pp. 5382-5389 ◽  
Author(s):  
Trang H. D. Nguyen ◽  
Peng Zhou ◽  
Azlin Mustapha ◽  
Mengshi Lin
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Consumer Products ◽  
Engineered Nanoparticles ◽  
Ag Nps ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Silver nanoparticles (Ag NPs) are one of the top five engineered nanoparticles that have been used in various products.

Surface-enhanced Raman spectroscopy and density functional theory study of thymine-1-acetic acid interaction with silver nanoparticles

2021 ◽  
pp. 1-8
Author(s):  
Scott G. Harroun ◽  
Yaoting Zhang ◽  
Yu-Syuan Lin ◽  
Huan-Tsung Chang
Keyword(s):  
Density Functional Theory ◽  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Acetic Acid ◽  
Density Functional ◽  
Surface Enhanced Raman Spectroscopy ◽  
Ag Nps ◽  
Functional Theory ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Thymine-1-acetic acid (TAA) is a modified nucleobase often used to add thymine functionality to materials. This study reports the Raman band assignments for TAA by comparing its experimental and density functional theory (DFT) simulated Raman spectra. Further comparison of experimental surface-enhanced Raman spectroscopy (SERS) of TAA on silver nanoparticles (Ag NPs) with simulated spectra of various complexes of xAg+ (x = 1, 2, or 3) and TAA reveals its likely adsorption orientation on the Ag NPs. This is one of the few studies that has achieved reasonably accurate simulation of SERS by employing multiple unconnected Ag+ ions, which could represent a compromise between a single atom or ion on one hand and a computationally expensive cluster on the other.

Silver oxide model surface improves computational simulation of surface-enhanced Raman spectroscopy on silver nanoparticles

2021 ◽  
Author(s):  
Scott G. Harroun ◽  
Yaoting Zhang ◽  
Tzu-Heng Chen ◽  
Huan-Tsung Chang ◽  
Alexis Vallée-Bélisle
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Silver Oxide ◽  
Accurate Result ◽  
Computational Simulation ◽  
Surface Enhanced Raman Spectroscopy ◽  
Model Surface ◽  
Surface Enhanced ◽  
Model Surfaces ◽  
Surface Enhanced Raman

For simulation of SERS on silver nanoparticles, Ag2O can provide a more accurate result than standard model surfaces such as Ag+, Ag, Ag4+ and Ag4.

scholarly journals Laser Raman Spectroscopy with Different Excitation Sources and Extension to Surface Enhanced Raman Spectroscopy

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Md. Wahadoszamen ◽  
Arifur Rahaman ◽  
Nabil Md. Rakinul Hoque ◽  
Aminul I Talukder ◽  
Kazi Monowar Abedin ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Rhodamine 6G ◽  
Detection Efficiency ◽  
Colloidal Suspension ◽  
Surface Enhanced Raman Spectroscopy ◽  
Laser Raman Spectroscopy ◽  
Raman Signal ◽  
Fluorescence Signal ◽  
Present System

A dispersive Raman spectrometer was used with three different excitation sources (Argon-ion, He-Ne, and Diode lasers operating at 514.5 nm, 633 nm, and 782 nm, resp.). The system was employed to a variety of Raman active compounds. Many of the compounds exhibit very strong fluorescence while being excited with a laser emitting at UV-VIS region, hereby imposing severe limitation to the detection efficiency of the particular Raman system. The Raman system with variable excitation laser sources provided us with a desired flexibility toward the suppression of unwanted fluorescence signal. With this Raman system, we could detect and specify the different vibrational modes of various hazardous organic compounds and some typical dyes (both fluorescent and nonfluorescent). We then compared those results with the ones reported in literature and found the deviation within the range of ±2 cm−1, which indicates reasonable accuracy and usability of the Raman system. Then, the surface enhancement technique of Raman spectrum was employed to the present system. To this end, we used chemically prepared colloidal suspension of silver nanoparticles as substrate and Rhodamine 6G as probe. We could observe significant enhancement of Raman signal from Rhodamine 6G using the colloidal solution of silver nanoparticles the average magnitude of which is estimated to be 103.

SERS Tags Derived from Silver Nanoparticles and Aryl Diazonium Salts for Cell Raman Imaging

Nanoscale ◽  
2022 ◽  
Author(s):  
Da Li ◽  
Philippe Nizard ◽  
Delphine Onidas ◽  
Aazdine Lamouri ◽  
Jean Pinson ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Surface Functionalization ◽  
Surface Enhanced Raman Spectroscopy ◽  
Raman Imaging ◽  
Diazonium Salts ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Silver Nps ◽  
Sers Tags

The surface functionalization of silver nanoparticles (NPs) by Raman reporters has stimulated a wide interest in recent years for the design of Surface-Enhanced Raman Spectroscopy (SERS) labels. However, silver NPs...

Graphene/silver nanoparticles‐based surface‐enhanced Raman spectroscopy detection platforms: Application in the study of DNA molecules at low pH

2019 ◽  
Vol 50 (12) ◽  
pp. 1849-1860
Author(s):  
Cristina M. Muntean ◽  
Nicoleta E. Dina ◽  
Maria Coroş ◽  
Nicoleta Toşa ◽  
Alexandru I. Turza ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Silver Nanoparticles ◽  
Surface Enhanced Raman Spectroscopy ◽  
Low Ph ◽  
Dna Molecules ◽  
Surface Enhanced ◽  
Surface Enhanced Raman
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