Ark Scientific - Laboratory Solutions

Specular Reflectance Accessories

Specular Reflectance Accessory 30°

Specular Reflectance Accessory 30°

Specular reflectance is a non-destructive method for surface measurements using a mirror-like reflection from the shiny or semi-matt surface of a sample. Specular reflectance occurs when the reflected angle of infrared radiation equals the angle of incidence. The amount of light reflected depends on the angle of incidence, the refractive index, surface roughness and absorption properties of the sample.

Key Features

  • 30° fixed angle
  • Convenient horizontal sample position (20.8 mm diameter full aperture)
  • Accommodates powder samples
  • Suitable for dispersive and large beam FT-IR
  • Minimal alignment
Monolayer/Grazing Angle Specular Reflectance Accessory

Monolayer/Grazing Angle Specular Reflectance Accessory

The Monolayer/Grazing Angle Specular Reflectance Accessory is a dual purpose sampling device designed to provide the means of in-situ FTIR monolayer investigation of films at an air/liquid interface and grazing incidence angle measurements of thin film coatings on solid reflective surfaces. The accessory can be easily converted from one form to the other by simple changeover of the appropriate sample holder.

Applications

  • Reflection-absorption spectra of solids
  • Langmuir-Blodgett films
  • Surfactant studies
  • Liquids in biological membranes
  • Semi-conductors
  • Paints, resins, polymer coatings, matt surfaced samples
  • Molecular orientation of surfaces

Key Features

  • Grazing angle capability
  • Monolayer analysis
  • Continuously variable incidence angles from 8° – 85° (dependant on spectrometer)
  • Volume of trough 8.9 ml
  • Sample size 85 x 22 mm liquid & 140 x 35 mm solid
  • Built-in polarizer mount
  • Aperture stop facility for controlling the sampled area
  • Liquid film compression/expansion capability
  • Inert PTFE sample trough (liquids)