LABORATORIES \ PHOTONIC SPECTROSCOPY

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PHOTONIC SPECTROSCOPY LABORATORY

 

 

 

Brief description of laboratory activities. TOP

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Analysis techniques: TOP

When electromagnetic radiation in the UV-Vis-NIR wavelength range interacts with a sample, four results are possible: the radiation is absorbed, transmitted, reflected or scattered.
Typically UV-Vis-NIR spectrometers are equipped to measure the transmittance or absorbance of a transparent solid or homogenous solution as a function of wavelength. However, when equipped with the proper accessories, UV-Vis-NIR instruments can measure the reflected and scattered energy from a sample. Reflected radiation can be either specular or diffuse.

Our Lambda 950 UV-Vis-NIR spectrophotometer is equipped with the accessories necessary for all the above mentioned measurement types.

Lambda 950 UV-Vis-NIR Spectrophotometer

Manufacturer: PerkinElmer

Specifications :

  • Double-beam, double holographic grating monochromators, computer interfaced;
  • Measuring range: 175nm - 3300 nm;
  • Nitrogen purging possibility of both optical and sample chambers for measurements below 185 nm;
  • Maximum resolution: 0.05 nm (UV-Vis); 0.20 nm (NIR) ;
  • Wavelenght accuracy : ± 0.08 nm (UV-Vis) ; ± 0.3 nm (NIR);
  • Photometric stability: < 0.0002 A/h;
  • Multiple functional parameters controlled by “UV-WinLab” software.

Accessories:

Universal Reflectance Accessory (URA) module
This accessory allows absolute and relative specular reflectance measurements for different radiation incidence angles on the sample.
Sample characteristics: smooth mirror-like solid surfaces

Integrating sphere module
The instrument is also equipped with an integrating sphere module accessory. The sphere has a diameter of 150 mm which is internally covered with Spectralon and works in the 250 – 2500 nm wavelength range. It allows diffuse reflection and also diffuse transmission measurements on a wide range of materials.
Sample characteristics: solids (minimum dimensions 8 x 8 mm, maximum dimensions 100 x 100 x 30 mm), powders, suspensions.

 

Applications: TOP

Application areas range from surface characterization of solids to the photometric analysis of turbid, colloidal, transparent and translucent samples.

Examples:

Efficiency of UV light absorbing coating foils on glass windows

 

Contact: TOP

 

Head of Laboratory Person responsible for the device:

Phone: 0721168275