Spectroscopies and Microscopies of Interfaces

Local contact  : Grégory Francius, DR

Analysis of samples (organic, inorganic and biological) in any type of medium (in air, in organic solvent, in an aqueous medium) with temperature control.

  • Surface imaging/topography of samples (z resolution: 0.1 nm).
    Force spectroscopy (resolution: 5 pN).
    Mapping of mechanical and adhesion properties (resolution: 256×256 pixels).
    Nanomanipulation & specific force measurements (single-molecule and single-cell force spectroscopy).
    Quantitative imaging (peak force tapping – quantitative nanomechanical mapping).
    Simultaneous acquisition of morphology and physicochemical properties.
    Co-localized AFM-Raman measurements.

Local contact : Mariela Brites Helu, IRLiang Liu , CR

Analysis of the electrochemical reactivity of samples, in electrolyte medium as well as with gel probes.

  • Imaging of surface topography of samples.
  • Local electrochemical measurements, e.g. CV, EIS, chronoamperometry, chronopotentiometry, with micrometer spatial resolution
  • Mapping of electrochemical properties of the samples.
  • Approach curves of the microelectrode or gel probe by current or shear force.
  • Coupling with EQCM.

Local contact : Mariela Brites Helu, IRAurélien Renard, IE

Surface imaging of solid samples SEM-FEG:

  • Resolution under high vacuum: 1.5 nm (30 kV), 4.0 nm (1.0 kV).
  • Resolution under low vacuum: 3.0 nm (15 kV).

Chemical analysis, EDS:

  • Analytical resolution (X-ray mapping) of 50 nm at 5 kV

Local contact Mustapha Abdelmoula, IR – Romain Coustel, MCF

  • Qualitative and quantitative analysis of the Mössbauer active atoms (Fe) in solids at concentrations of percent range and the analysed sample of thickness 4 to 100 µm
  • Spectrometer in transmission geometry at room temperature
  • Two spectrometers in cryogenic mode and transmission geometry: one cold head from 300 to 4 K, one cold head from 300 to 8 K.
  • A miniature MIMOS spectrometer in backscatter mode at room temperature for surface analysis developed by G. Klinglelhofer (Mainz University) similar to the one launched in 2004 on the Mars planet.

Local contact  : Cédric Carteret, PU – Manuel Dossot, MCF – Fabienne Quilès, CR – Jérôme Grausem, IE

  • Near infrared to far infrared absorption infrared spectroscopy and near infrared to mid infrared microspectroscopy
  • Raman spectroscopy and microspectroscopy
  • UV-Visible absorption

Local contact :

Wide range of analysed samples: mineral phases, organo-mineral hybrids, nanomaterials, thin films, electrogenerated materials, electrodes (sensors), biological materials (biofilms, antimicrobial materials), dehydrated food materials, polymers,…

  • Study of the extreme surface (<10 nm) for all types of solid materials compatible with ultra-high vacuum.
  • Identification of all elements (except H and He) and elemental quantification (>0.1% at.).
  • Information about electronic states, nature of chemical bonds, oxidation degrees…
  • Study of valence band structures (density of electronic states) and measurement of work function.