Tutorials
Tutorial 1: Features of reflectivity curves
Tutorial 2: WinSpall SPR simulation software.
Also have a look at our theory section.
Tutorial 1 - Features of reflectivity curves
The resonance angle
The resonance angle. This is “our plasmon” – the quantity, we want to determine. In the absence of any film, its angular position is given by the optical constants of the prism, the surrounding medium, and the type of metal. Measuring the plasmon of such a “blank substrate” is important to determine exactly these parameters and use them later on for the analysis of the plasmon measured after layer deposition. The modeling of these reflectivity curves is then done using the parameters of the blank fit and adjusting only film related layer parameters.
Note, the plasmon must not always touch the zero line. This depends quite critically on the thickness of the metal layer. The closer this thickness is to 50 nm the “deeper” will the dip be.
Download:
Res Tec Tutorial 1 - Features of reflectivity curves (pdf)