The Laser Induced Breakdown Spectroscopy (LIBS) focus a laser beam on a surface sample. The material is vaporized, the chemical elements constituting the material are "excited" and when they return to the steady state, they emit photons of specific wavelength. This light is collected by a fiber and a spectrometer permit to obtain a spectrum with the intensity as a function of the wavelengths. That allow to characterize the material. The impact on the material is almost invisible (200 μm) and any chemical elements present in the periodic table can be detected, including low atomic weight elements such as hydrogen, boron or lithium.
Epitopos has created in partnership with the ILM (Institute Laser Matter, Vincent Motto-Ros) and CRITT Materials Alsace (Frédéric Pelascini) a LIBS analytical system dedicated to the field of heritage. The goal was to create a powerful analytical tool to recognize, on site, the nature of the pigments present on a pictorial work.
Epitopos, in collaboration with Géocoop, has developed a methodology for studying rock cubes and, in collaboration with CRITT Matériaux Alsace, carrying out high resolution LIBS elementary chemical mappings to obtain chemical maps of interest for metallogenists.
Epitopos develops innovative solutions for technological and methodological perspectives in order to answer a problem. This approach is made for the specific requirement of Epitopos but is also applied to companies and external issues.