LABORATORIES: CNR ISPC Stone LAB; Heritage Materials Science
NAME OF THE INSTRUMENT
FT-IR microscope and FT-IR macro
GENERAL DESCRIPTION
The instrument consists of two distinct integrated modules:
- FT-IR LUMOS II microscope equipped with a Focal Plane Array (FPA) detector, which allows the acquisition of chemical images in ATR, reflection and transmission mode;
- FT-IR INVENIO® macro unit, which allows transmission and ATR spectral analyses on organic and inorganic compounds.
The infrared microscopy instrument complete with FT-IR macro unit is used for the chemical characterization of organic and inorganic materials and conservation products used in the Cultural Heritage field, the detection of degradation products, the study of degradation processes, the identification of coatings and surface coatings and the study of archaeological finds.
The chemical imaging obtained with the FPA detector allows to characterize and visualize the distribution of compounds in a given sample, with high spatial resolution, speed (more than a thousand spectra in one second) and sensitivity. This allows, for example, to reconstruct the stratigraphy of even very small samples and with very thin paint layers (up to 5 μm thick), and thus highlight the execution technique.
TECHNICAL DESCRIPTION OF MICRO FT-IR LUMOS II
- Spectral range: 650- 4000 cm-1
- Spessore massimo dei campioni alloggiabili: 40 mm
- Obiettivo/Condensatore “Cassegrain”da 8x
- Modalità di analisi in trasmissione
- Modalità di analisi in riflessione
- Modalità di analisi in ATR (cristallo in Germanio)
- Rivelatore integrato a temperatura ambiente (TE-MCT)
- Nitrogen-cooled single-point detector (LN-MCT)
- Rivelatore raffreddato con azoto FPA dedicato all’analisi in modalità imaging integrata
- Automazioni del sample stage lungo i tre assi spaziali con interfaccia software, per applicazioni di Chemical Imaging e Mapping
- Condensatore motorizzato, con messa a fuoco automatica, sia nel visibile sia nell’IR
- Polarizzatore e analizzatore per luce visibile
TECHNICAL DESCRIPTION OF MACRO FT-IR INVENIO®
- FIR and MIR spectral range: 80-4000 cm-1
- Modalità di analisi in trasmissione
- ATR Analysis mode (Diamond crystal)
Referents:
Daniela Fico (Stone LAB) daniela.fico@ispc.cnr.it
Barbara Salvadori (Heritage Materials Science) barbara.salvadori@cnr.it