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Principle

Sample surface can be analyzed using reflection mode, while the structure of materials can be studied using transmitted light (samples must be few microns thick). 

A large variety of contrast modes exist to highlight different aspects of material structures, depending on the information needed.

Samples can be either solids or liquids.


Capabilities

  • Fractography
  • Dispersion in polymer blends
  • Powders, crystal morphologies
  • Thickness measurements of multilayered materials, concentricity

Assets


AssetDetails

Stereo Microscope Leica M60

Observation of surface at low magnifications (x6-x40) in reflection, with integrated annular light and digital camera.


Zeiss Discovery V12

Observation of surface at low magnifications (x6-x40) in reflection, with integrated annular light and digital camera.

Optical Microscope Leica DM2700M

Observation of samples at higher magnifications (x25-x500, limit of resolution 0,5 µm) in reflection or transmission, and digital camera.

Photo bench

Realizing quality pictures of large parts at low magnification, in repeatable conditions of lighting and exposition.

Bench and camera support (Kaizer), a reflex camera (Nikon) piloted a software (controlmynikon).


Preparative Techniques


AssetDetails

Polishing machine Struers Labopol-30

Polishing machine equipped with an autosampler, to prepare embedded sections and surfaces, with a finish at 0,25 µm.

Microtomy

Microtome to prepare cuts of samples, at room temperature, with a thickness in the range 0,5-50 µm.


Cryofracture

Fracture of frozen of samples in liquid nitrogen (-196°C), to prepare sections of soft samples.


Application Case Study


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