Surface enhanced infrared absorption on Au nanoparticle films deposited on SiO2/Si for optical biosensing: Detection of the antibody–antigen reaction

2006 ◽  
Vol 600 (23) ◽  
pp. L305-L308 ◽  
Author(s):  
Dominik Enders ◽  
Swen Rupp ◽  
Alexander Küller ◽  
Annemarie Pucci
Keyword(s):  
Infrared Absorption ◽  
Au Nanoparticle ◽  
Optical Biosensing ◽  
Nanoparticle Films ◽  
Surface Enhanced

Maximum size limit of Au nanoparticle applicable for surface enhanced infrared absorption

2019 ◽  
Vol 125 (12) ◽  
Author(s):  
Yuta Ishigo ◽  
Hiroshi Nakashima ◽  
Masamichi Tsushima ◽  
Toru Shimada ◽  
Yushi Suzuki
Keyword(s):  
Infrared Absorption ◽  
Maximum Size ◽  
Au Nanoparticle ◽  
Size Limit ◽  
Surface Enhanced

Study of Surface Raman and Fluorescence Enhancement of RhB Molecules Adsorbed on Au Nanoparticles

2012 ◽  
Vol 20 ◽  
pp. 33-41 ◽  
Author(s):  
Jun Tang ◽  
Huan Fei Wen ◽  
Peng Lan Chai ◽  
Jun Liu ◽  
Yun Bo Shi ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Deposition Time ◽  
Surface Enhanced Raman Spectroscopy ◽  
Au Nanoparticle ◽  
Enhanced Fluorescence ◽  
Surface Enhanced Fluorescence ◽  
Interesting Phenomenon ◽  
Nanoparticle Films ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

In this work, an interesting phenomenon demonstrating the similarities between the results from both Surface Enhanced Raman Spectroscopy (SERS) and Surface Enhanced Fluoresence (SEF) for rhodamine B (RhB) molecules adsorbed on gold nanoparticles was reported. By changing the deposition time, porous Au nanoparticle films with various densities and sizes were deposited. Via thermal annealing, the densities and sizes were modified. It is concluded from the results that the intensity of SERS and SEF varied in parallel with different Au nanoparticle films: different sizes and different densities. We believe that the results obtained can provide us with a reference when developing bio-chemical sensors based on Surface Enhanced Raman Spectroscopy and Surface Enhanced Fluorescence.

scholarly journals Surface-Enhanced Infrared Absorption of o-Nitroaniline on Nickel Nanoparticles Synthesized by Electrochemical Deposition

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Yufang Niu ◽  
Jie Yao ◽  
Keyu Wang
Keyword(s):  
Infrared Absorption ◽  
Indium Tin Oxide ◽  
Nickel Nanoparticles ◽  
Ph Value ◽  
Glass Plate ◽  
Nickel Sulfate ◽  
Nickel Chloride ◽  
Attenuated Total Reflection ◽  
Enhancement Effect ◽  
Surface Enhanced

Nickel nanoparticles were electrochemically deposited on indium-tin oxide (ITO) coated glass plate in a modified Watt’s electrolyte. The surface-enhanced infrared absorption (SEIRA) effect of the nanoparticles was evaluated by attenuated total reflection spectroscopy (ATR-FTIR) using o-nitroaniline as a probe molecule. Electrodeposition parameters such as deposition time, pH value, and the type of surfactants were investigated. The morphology and the microstructure of the deposits were characterized by the field emission scanning electron microscope (FESEM) and the atomic force microscope (AFM), respectively. The results indicate that the optimum parameters were potential of 1.3 V, time of 30 s, and pH of 8.92 in the solution of 0.3756 mol/L diethanolamine, 0.1 mol/L nickel sulfate, 0.01 mol/L nickel chloride, and 0.05 mol/L boric acid. The FESEM observation shows that the morphology of nickel nanoparticles with best enhancement effect is spherical and narrowly distributed particles with the average size of 50 nm. SEIRA enhancement factor is about 68.

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