Microscopie Analyse Chimique – Chemical Analysis Microscopy
The MACAM (Microscopie Analyse Chimique – Chemical Analysis Microscopy) platform is a transverse research structure centered on environmental microscopy (instrumentation, metrology, data processing, image analysis ...). X-ray spectrometry using electron probes (energy selection and wavelength dispersion spectrometers) and optical spectroscopy (Raman scattering) are widely used. The in-SEM coupling of these two kinds of spectrometry via a Renishaw SEM-SCA (Scanning Electron Microscope Structural and Chemical Analyzer) interface is an original aspect of our activity.
The activity of MACAM platform is in strong interaction with the research studies of the different departments of I2M, especially in the fields of energy and solid mechanics.
The presence of this platform at I2M is consistent with the research strategy of the Institute which investigates in fine instrumentation to acquire fields related to the phenomena involved in continuum mechanics (concentration, temperature, deformation, velocity fields ...) in heterogeneous media at small scales (micro/nano).
Case study example
Semi-quantitative chemical analysis of an altered limestone coming from a borehole drilled in the sixties on the Lascaux Hill
Local context of the study:
Cécile Verdet PhD (2015 – 2018) (Thesis Dir.: Colette Siriex, Thesis Co-dir.: Yannick Anguy ), Université de Bordeaux ED SPI 209 (Contingent « soutien à l’interdisciplinarité »).
Research collaboration between the GCE and TREFLE departments of I2M.
Setting up of the research operation « Painted Caves » (C. Sirieix) transverse to I2M.
Partner : DRAC Aquitaine.
To the left, chemical contrast image (backscattered electrons) of an altered limestone sample. To the right, mineralogical phases identified based on a semi-quantitative chemical cartography performed with an Energy Dispersive Spectrometer(EDS).