SpectrolabSystems.net

You are here: Home

FTIR Accessories

Monolayer/Grazing Angle Specular Reflectance

Skip to content

Monolayer/Grazing Angle Specular Reflectance

User Rating:

/ 0

Environmental Chamber

The Monolayer/Grazing Angle Specular Reflectance Accessory P/N GS19650 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.
The range of grazing incident angles available with this accessory are from 8º to 85º with no stray light, on most spectrometer systems. Aperture stops are provided to redefine the beam profile, for prime position on samples at or near grazing angles, to enhance the performance.
In the monolayer mode a variety of monolayer systems including surfactants, proteins, detergents, oils, polymers and phospholipids in biological membranes can be studied in their native environment for information such as solvation, molecular orientation, configuration and phase transition. A special liquid sampling trough, fabricated in PTFE, is used to contain the sample of interest. A rotatable polarizer mount and surface film stretching device are provided to aid in the studies. Any of Specac’s P/N GS12000 series polarisers can be placed into the polarizer mount. The polarizer substrate chosen will determine the frequency range that can be observed in the Mid IR.

Key Features

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

Applications