Spectroscopic Ellipsometric Evaluation of Gold Nanoparticle Thin Films Fabricated Using Layer-by-Layer Self-Assembly


  • The authors wish to acknowledge the EPSRC for financial support (GR/M34959). HLZ also thanks T. Mykhaylyk and Q. Li for helpful discussions.


Uniform thin films of gold nanoparticles have been fabricated on gold substrates using a layer-by-layer self-assembly approach (see Figure). The optical properties of these nanoparticle films were characterized using variable-angle spectroscopic ellipsometry, and the data modeled using a Lorentz oscillator dispersion model. Both the thickness and refractive indices were evaluated simultaneously over a wide wavelength range.