Workshop presenting confocal raman microscopes and modular solutions or spectroscopy and imaging on Sunday, September 3rd.
For more details, click here.
Held by Dr. Marcus Schulz, Application Engineer Molecular Spectroscopy, Agilent Technologies
The workshop will be held on Sunday, September 3rd.
The Cary Universal Measurement Accessory (UMA) provides the ability to automatically measure absolute specular reflectance, transmission and scattering at a wide range of angles and different polarizations, unattended. This accessory is unique to the materials market providing solutions to both research and QA/QC in the areas of thin films and coatings, optics, glass, solar and new materials. The Cary 7000 UMS is the first truly universal measurement system for the UV-Vis/NIR wavelength range, replacing the need for multiple accessories and eliminating accessory changeover or reconfiguration. This ensures unprecedented data quality and prevents sample non-uniformity effects or spectral inconsistencies that occur when multiple analysis techniques are used to perform a single measurement. The Cary UMS can cover a wide range of different applications like:
- QA/QC coating quality,
- film thickness control,
- bulk optic performance and characterization,
- coating uniformity,
- color/visual appearance
and many more. After a short introduction of the system we will perform measurements of different type of samples to demonstrate the capabilities of the UMA.
Held by Prof. Tomasz Łojewski (AGH University of Science and Technology)
Prediction of a long-term behavior of materials necessary to asses a service lifetime for a product and type of degradation it undergoes requires performing accelerated ageing tests. Such tests are usually based on standardized protocols and in case of irradiation weathering requires days or weeks of illumination using laboratory ageing chambers or harsh outdoor conditions. Fading behavior is then assessed by comparing color indexes (usually in CIE L*a*b* color space) for before/after state of the object. Standardized methods of light-stability testing were developed decades ago and doesn’t reflect current state of the art in respect to high irradiance experimentation. In the late nineties an experimental method was proposed for the study of artworks fading, which allows to perform such tests in a matter of minutes and, what is extremely important for this area of research, in a non-destructive manner. The concept of micro-fading tests (MFT) is based on the use of fiber-optics reflectance spectroscopy combined with a high-power broad-band light illumination (xenon or white LED light sources). The size of the illuminated spot depends on the optics used but usually does not exceed 0.5 mm in diameter. In the course of ageing experiment both, diffuse reflectance and color indexes derived from it are calculated on-the-fly and as a result of test a time series of spectra and color change curves (ΔE vs. time) are recorded.
Following a short introduction to the MFT technique and accelerated aging in general, workshop participants would be familiarized with a new automated MFT instrumentation and perform light-ageing tests for a fading reference material (Blue Wool Standards) and a sample of choice (textiles, ink-jet printouts, watercolor painting). Participants are encouraged to bring their own objects for MFT tests.
The workshop will be held on Monday, September 4th (and Tuesday, September 5th, in case of interest), in parallel to poster session(s).