Quattro ESEM for Materials Science from Thermo Scientific

The Thermo Scientific™ Quattro SEM combines all-around performance in imaging and analytics with an innovative environmental mode (ESEM™) that allows samples to be examined in their natural state. It is suitable for a broad range of industrial, academic and government labs that need the versatility and ease-of-use required for multiple users of varying skill levels and disciplines on a system that also aids unique in situ experiments.

Quattro’s field emission gun (FEG) guarantees exceptional resolution, while its three vacuum modes (low vacuum, high vacuum and ESEM) provide the flexibility to house the most extensive range of samples of any SEM available, which includes samples that are outgassing or otherwise not vacuum-compatible.

High-Performance Versatility

The Quattro ESEM is the ultimate analytical platform, thanks to its chamber that allows for a range of accessories. Analytical capabilities include electron backscatter diffraction (EBSD) coplanar with EDS, energy dispersive X-ray spectroscopy (EDS) with ports for 180 degree dual EDS attachment, and wavelength dispersive X-ray spectroscopy (WDS).

The Quattro ESEM supports an optional High Vacuum Heating Stage, a Python-based scripting tool, AutoScript and a new RGB cathodoluminescence (CL) detector. The RGB CL detector creates color images emphasizing sample properties not visible with conventional electron or X-ray imaging methods. Using AutoScript, users can program imaging and stage movements for unattended data acquisition. The High Vacuum Heating Stage facilitates for clean sample observations at high temperature.

Defects in glass due to the reduction of silica glass in silicon and the relative oxidation of metals (Fe, Cu, and others) in their corresponding oxides.

Defects in glass due to the reduction of silica glass in silicon and the relative oxidation of metals (Fe, Cu, and others) in their corresponding oxides. Sample courtesy of Stazione Sperimentale del Vetro, Murano Venezia, Italy.

Quattro ESEM applications include:

Nanocharacterization

  • Films/coatings
  • Metals and alloys, polished sections, fractures, welds, magnetic and superconducting materials
  • Ceramics, plastics, composites
  • Geological sections, minerals
  • Particles, fibers, porous materials
  • Soft materials: pharmaceuticals, filters, polymers, tissues, plant material, gels

Characterization in situ

  • Material growth
  • Crystallization/phase transformation
  • Oxidation, catalysis
  • Tensile (with heating or cooling)
  • Hydration/dehydration/wetting/contact angle analysis

CaCu3Ti4O12 (CCTO) is a compound with an extraordinarily high dielectric constant.

CaCu3Ti4O12 (CCTO) is a compound with an extraordinarily high dielectric constant. Sample courtesy of Mr Sylvain Marinel, CRISMAT laboratory, France.

Dynamic in situ experiments

Quattro’s versatility makes it ideal for a wide range of topics in materials science. It is similarly adept at performing conventional high- resolution SEM imaging/analysis and dynamic in situ experiments. It allows Scientists to explore the broadest range of samples in their natural state for the most accurate information regarding composition and structure.

Quattro allows the study of samples at 100% humidity, such as these pollen grains, in ESEM mode.

Quattro allows the study of samples at 100% humidity, such as these pollen grains, in ESEM mode.

Unique Environmental Mode

The capability of Quattro’s environmental SEM (ESEM) allows Scientists to examine materials in a range of conditions, such as hot, wet/humid or reactive environments, as they develop new materials and products for a wide range of disciplines, including automotive, construction, coatings, packaging and energy. Quattro’s unique ability to investigate the progress of chemical reactions, such as corrosion, crystal growth, etching, oxidation and catalysis, can have a huge impact on the environment as well as science.

Salt crystals dissolving and recrystallizing as water is either condensing or evaporating in ESEM mode.

Salt crystals dissolving and recrystallizing as water is either condensing or evaporating in ESEM mode.

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