Development of a Two-Dimensional Evaluation Method for Thin Layers Using Surface Plasmon Resonance

Abstract A two-dimensional evaluation method for intermolecular interactions based on surface plasmon resonance (SPR) was developed. The measurement was conducted at varying wavelengths. The wavelength affording the minimum brightness (SPR wavelength) was determined at each pixels of the image. The spatial distribution of SPR wavelength was converted to a thickness distribution in nm scale, which well presented structures of thin materials attached on silver film.