Optical spectroscopy

Electronic & Chemical & Magnetic Characterization (Optical spectroscopy)

UV/Vis/NIR spectroscopy is the measurement of the attenuation of a beam of light after it passes through a sample or after reflection from a sample surface. It can be used either in solution or solid state for the quantitative determination of different analyses and optical absorption characteristics. Absorption measurements can be at a single wavelength or over an extended spectral range. This spectroscopy is usually applied to molecules or inorganic complexes in solution. The spectra have broad features that are of limited use for sample identification but are very useful for quantitative measurements.

Since the UV-Vis range spans the range of human visual acuity of approximately 400 - 750 nm, this spectroscopy is useful to characterize the absorption, transmission, and reflectivity of a variety of technologically important materials, such as pigments, coatings, windows, and filters.

The infrastructure provides UV/Vis/NIR spectrophotometry combined with integrating sphere, which can be used for high precision diffused reflectance and scattered transmittance measurements on virtually any solid or liquid.

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          provided at NFFA-Europe laboratories by:
CNR-ISM
Italy
CSIC-ICMAB
Spain
FORTH
Greece
ICN2
Spain
PSI
Switzerland
TUG
Italy
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          provided by:
EURONANOLAB
France
PSI
Switzerland
Perkin Elmer lambda 19 spectrometer @ Laboratory for Micro- and Nanotechnology
Optical spectroscopy
200-3200 nm
Reflection and transmission mode
0.05 to 5 nm (UV/VIS) 0.2 to 20 nm (NIR)
Typically 15x15 mm2 samples up to 50x50 mm2 and standard optical cuvettes for liquids/gases
Gas/liquid
CNR-ISM
Italy
Optical Spectrometer
Steady state optical spectroscopy is the basic tool for the characterization of materials and the first step to pump-probe experiments.
The optical spectrometer allows measurements of transmittance and reflectance in the wavelength range of 220-850 nm. The instrument is equipped with an integrating sphere.
Solid and liquid samples measured in air.
Atmospheric pressure.