Determination of Thickness, Dielectric Constant of Thiol Films, and Kinetics of Adsorption Using Surface Plasmon Resonance

Langmuir ◽  
2005 ◽  
Vol 21 (2) ◽  
pp. 602-609 ◽  
Author(s):  
Flavio S. Damos ◽  
Rita C. S. Luz ◽  
Lauro T. Kubota
Keyword(s):  
Dielectric Constant ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Kinetics Of Adsorption ◽  
Kinetics Of

scholarly journals Optical Characterization of Ultra-Thin Films of Azo-Dye-Doped Polymers Using Ellipsometry and Surface Plasmon Resonance Spectroscopy

Photonics ◽  
2021 ◽  
Vol 8 (2) ◽  
pp. 41
Author(s):  
Najat Andam ◽  
Siham Refki ◽  
Hidekazu Ishitobi ◽  
Yasushi Inouye ◽  
Zouheir Sekkat
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Surface Plasmon Resonance ◽  
Surface Plasmon ◽  
Spectroscopic Ellipsometry ◽  
Plasmon Resonance ◽  
Complex Refractive Index ◽  
Resonance Spectroscopy ◽  
Doped Polymers

The determination of optical constants (i.e., real and imaginary parts of the complex refractive index (nc) and thickness (d)) of ultrathin films is often required in photonics. It may be done by using, for example, surface plasmon resonance (SPR) spectroscopy combined with either profilometry or atomic force microscopy (AFM). SPR yields the optical thickness (i.e., the product of nc and d) of the film, while profilometry and AFM yield its thickness, thereby allowing for the separate determination of nc and d. In this paper, we use SPR and profilometry to determine the complex refractive index of very thin (i.e., 58 nm) films of dye-doped polymers at different dye/polymer concentrations (a feature which constitutes the originality of this work), and we compare the SPR results with those obtained by using spectroscopic ellipsometry measurements performed on the same samples. To determine the optical properties of our film samples by ellipsometry, we used, for the theoretical fits to experimental data, Bruggeman’s effective medium model for the dye/polymer, assumed as a composite material, and the Lorentz model for dye absorption. We found an excellent agreement between the results obtained by SPR and ellipsometry, confirming that SPR is appropriate for measuring the optical properties of very thin coatings at a single light frequency, given that it is simpler in operation and data analysis than spectroscopic ellipsometry.

β-Casein monomers as potential flavonoids nanocarriers: Thermodynamics and kinetics of β-casein-naringin binding by fluorescence spectroscopy and surface plasmon resonance

2020 ◽  
Vol 108 ◽  
pp. 104728
Author(s):  
Ana Flávia Coelho Pacheco ◽  
Natália Moreira Nunes ◽  
Hauster Maximiler Campos de Paula ◽  
Yara Luiza Coelho ◽  
Luis Henrique Mendes da Silva ◽  
...  
Keyword(s):  
Surface Plasmon Resonance ◽  
Fluorescence Spectroscopy ◽  
Surface Plasmon ◽  
Plasmon Resonance ◽  
Thermodynamics And Kinetics ◽  
Kinetics Of
Sign in / Sign up

Export Citation Format

Share Document