Layers and Coatings

Thin solid films are typically applied as coatings (“nanolayers”) to provide functionality to everyday products from electronics and phone displays through batteries, solar cells and packaging to automotive components and doorknobs.

Advanced Nanolayer Analysis with MP-SPR Technology

With BioNavis’ novel configuration of Multi-Parametric Surface Plasmon Resonance (MP-SPR), we combine plasmonics to reach the Ångström level with a goniometric setup similar to that of ellipsometer to obtain a working range and multiple wavelengths similar to spectroscopic ellipsometry to define refractive index of each measured layer. This provides reliable measurements of thickness and refractive index of nanolayers, their plasmonic properties and surface interactions.

Reasons to choose MP-SPR for measurements of thin solid films:

  • Measures ultrathin films from a few Ångström thickness thanks to measurement at wide angular range and multiple wavelengths
  • Thickness and refractive index solved simultaneously using LayerSolver™ 
  • Extremely sensitive instruments for real-time adsorption kinetics on surfaces
  • From dry to wet state with the same configuration – MP-SPR works in both states due to its goniometric configuration
  • Cross-validation with microscopy and modelling is possible
  • Measurements do not require vacuum
  • Measurements can be performed in organic solvents

Use MP-SPR to

  • Select the best barrier (non-stick / antireflective / moisture) coating
  • Determine the minimum required thickness of nanolayers for desired functionality
  • Assess the quality of the coating
  • Find the coating process that provides homogeneous layer
  • Determine the time needed for nanoparticles to assemble on the surface
  • Find the ideal pH and electric potential conditions for the coating process
  • Assess layer swelling in contact with gas, moisture or solvent
  • Measure the SPR response of metal layers
  • Easy handling of sensor slides for ex situ modification

We have a wide range of ready made sensor surfaces to choose from, or you can make your own coatings in your premises. We are glad to provide our expertise and measure your samples in our facilities.

Discover the world of MP-SPR

Selected application notes


Contact us to find out how BioNavis instruments can enhance your research.

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