scholarly journals Infrared Absorption of Thin Film on Metal Surface Enhanced by Contact with KBr Prism

1969 ◽  
Vol 17 (5) ◽  
pp. 231-233 ◽  
Author(s):  
Wataru SUETAKA
Keyword(s):  
Thin Film ◽  
Metal Surface ◽  
Infrared Absorption ◽  
Surface Enhanced

Spectroimmunochemistry Using Colloidal Gold Bioconjugates

2002 ◽  
Vol 22 (5-6) ◽  
pp. 541-547 ◽  
Author(s):  
Alexander A. Kamnev ◽  
Lev A. Dykman ◽  
Petros A. Tarantilis ◽  
Moschos G. Polissiou
Keyword(s):  
Metal Surface ◽  
Infrared Absorption ◽  
Immunoglobulin G ◽  
Colloidal Gold ◽  
Protein A ◽  
Human Immunoglobulin ◽  
Vibration Modes ◽  
Surface Enhanced ◽  
Ir Spectroscopic

Using surface-enhanced infrared absorption (SEIRA) spectroscopy of dry films of colloidal gold (CG) bioconjugates with protein A, it is shown that certain characteristic bands of the protein (e.g., amide I, amide II and some other vibration modes) are essentially affected by the metal surface. Thus, the method may be used for controlling the quality of such bioconjugates. Moreover, it is demonstrated that the biospecific reaction of protein A attached to CG particles with human immunoglobulin G (IgG) results in further essential changes in SEIRA spectra, providing a means for an easy and rapid IR spectroscopic detection of biospecific immunochemical interactions (i.e., spectroimmunochemistry). The results obtained can form a basis for developing test systems for detecting various biospecific interactions.

Plasmonic Metasurfaces as Surface-Enhanced Infrared Absorption Substrates for Optoelectronics: Alq3 Thin-Film Study

2021 ◽  
Vol 125 (8) ◽  
pp. 4694-4703
Author(s):  
Roman Zvagelsky ◽  
Dmytro Chubich ◽  
Anastasia Pisarenko ◽  
Zakhar Bedran ◽  
Elena Zhukova
Keyword(s):  
Thin Film ◽  
Infrared Absorption ◽  
Film Study ◽  
Surface Enhanced

scholarly journals Modeling and Experimental Investigations of Nanostructured Ag Thin Films Produced by Oblique-Angle Deposition and Its SERS Performance

Coatings ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 458
Author(s):  
Datai Hui ◽  
Shun Zhou ◽  
Changlong Cai ◽  
Shigeng Song ◽  
Zhentao Wu ◽  
...  
Keyword(s):  
Thin Film ◽  
Raman Scattering ◽  
Surface Enhanced Raman Scattering ◽  
Oblique Angle ◽  
Scattering Effects ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Enhanced Raman Scattering ◽  
Simulation Results ◽  
Deposition Angle

The growth mechanism of nanocolumnar silver thin film deposited on a smooth silicon substrate using electron beam evaporation process at an oblique angle was simulated with the Kinetic Monte Carlo method. Following the simulated silver nanostructured thin film, a further computational simulation was done using COMSOL for surface-enhanced Raman scattering effects. The simulation results were compared against corresponding experimental results, which demonstrated high agreement between simulation results and experimental data. It was found that as the incident deposition angle increased, the density of the Ag thin film significantly decreased and the surface roughness increased. When the incident deposition angle was at 75° and 85°, the resulting nanocolumnar structure was significantly tilted. For Ag thin films deposited at all investigated angles, surface-enhanced Raman scattering effects were observed. Particularly, the Ag nanocolumns deposited at 85° showed remarkable Surface-enhanced Raman Scattering effects. This was seen in both COMSOL simulations and experimental results: Enhancement factors were 2 × 107 in COMSOL simulation and 3.3 × 105 in the experiment.

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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