Infrared thermospectroscopic imaging and tomography of confined process

In this paper is presented an IR imaging technique allowing one to retrieve quantitative concentration and temperature maps with relatively fast acquisition times of samples evolving in time. A model study is realized based on the drying of a drop of colloidal dispersion in confined geometry and quantitative maps of colloid volume fraction and temperature everywhere in the dorp are retrieved. Finally, a secondary technique of IR tomography is presented to extend the setup sensitivity to the thickness of the sample and 3D tomographs of both thermal emissivity and IR absorbance of a silica gel are constructed numerically.