I am currently working on Surface Plasmon Resonance based biosensor. I want to utilise AZO (aluminum doped Zinc Oxide) and TiN (Titanium Nitride) as the plasmonic material for my sensor. So I need the wavelength dependent refractive index equation of AZO and TiN so that I can perform the simulation in COMSOL. It would be a great help if anyone can provide me with these equations or hints about from where I can find them.
Thanks in advance!