Advanced imaging and diffraction tools for transmission electron microscopy

Materials science properties (metals, alloys, ceramics, semiconductors, nanoparticles) depend on great extent on their textures at nm scale level. The NanoMEGAS ASTAR device uses TEM based orientation mapping technique (EBSD-TEM like) based on collection of precession electron diffraction (PED) patterns and cross-correlation comparison with simulated intensities.

NanoMEGAS’ patented ASTAR system uses the novel precession electron diffraction (PED) technique in conjunction with 3D diffraction tomography to resolve any 3D crystal nanostructure, that is otherwise difficult to solve by conventional X-Ray diffraction techniques.

  • Digital STEM & TEM orientating imaging giving <2nm spatial resolution (FEG TEM)
  • 3D Precession diffraction tomography to solve complex nanocrystalline structures
  • Enhanced EELS and EDX spectroscopy eliminating channelling
  • Strain Mapping Analysis – high precision / <2nm spatial resolution (FEG TEM)
  • System Retro-fit on all TEMs – old or new

ASTAR can turn any transmission electron microscope (TEM) into a very powerful analytical tool enabling orientation–phase imaging at 1 nm resolution attainable (field-emission gun TEM) in combination with other TEM analytical techniques.
The device uses TEM based orientation mapping technique (electron backscatter diffraction -TEM like) based on collection of precession electron diffraction (PED) patterns and cross-correlation comparison with simulated intensities.

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DigiSTAR-precession electron diffraction (PED) device enables the collection of quasi-kinematical intensities (X-Ray like) in any transmission electron microscope (TEM).  PED in combination with powerful software (3D difffraction tomography) enables the  reconstruction of the reciprocal cell of any nanomaterial and the automatic measurement of the reflection intensities. In this way you can use your TEM as a powerful tool to solve any nanocrystal structure with performance comparable to the most advanced Synchrotron beamlines.

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