The Thermo Scientific™ Quattro ESEM™ combines a unique environmental mode (ESEM™) with versatile, high-resolution SEM; alongside high performance in imaging and analytics.
This powerful combination allows samples to be studied in their natural state, making the Quattro ESEM™ an ideal choice in a range of industrial, academic and governmental laboratory settings. It is especially suited for settings where users have a diverse range of experience levels and come from a range of different disciplines. Here, the Quattro ESEM’s ease-of-use and versatility makes it an ideal platform for unique in situ experimentation.
The field emission gun (FEG) included in the Quattro package guarantees excellent resolution. It is able to accommodate a wider range of samples than any other SEM on the market thanks to its three vacuum modes (high vacuum, low vacuum and ESEM™); even samples that are outgassing or not normally vacuum-compatible.
The Quattro ESEM’s chamber allows for a range of accessories to be added on to the instrument, making it a truly revolutionary analytical platform. Its analytical capabilities include electron backscatter diffraction (EBSD), coplanar with EDS, energy dispersive X-ray spectroscopy (EDS) complete with ports for a 180 degree dual EDS attachment and wavelength dispersive X-ray spectroscopy (WDS).
Additionally, the Quattro ESEM™ can accommodate a range of additional features:
- An optional High Vacuum Heating Stage allowing for clean sample observations at high temperatures.
- A new RGB cathodoluminescence (CL) detector, capable of producing color images that highlight sample properties not able to be seen via conventional X-ray or electron imaging techniques.
- AutoScript, a Python-based scripting tool that allows users to program stage movements and imaging for unattended acquisition of data.
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:
- Fractures, welds, metals and alloys, polished sections, superconducting and magnetic materials
- Composites, plastics, ceramics
- Minerals, geological sections
- Soft materials such as pharmaceuticals, polymers, plant material, filters, tissues and gels
- Fibers, particles, porous materials
Characterization in Situ
- Phase transformation/crystallization
- Catalysis, oxidation
- Material growth
- Contact angle analysis/wetting/hydration/dehydration
- Tensile (with cooling or heating)
CaCu3Ti4O12 (CCTO) is a compound with an extraordinarily high dielectric constant. Sample courtesy of Mr Sylvain Marinel, CRISMAT laboratory, France.
Dynamic in Situ Experiments
One of Quattro’s key strengths is its versatility, making it suitable for a wide range of topics in materials science. It allows researchers to study a broad range of samples in their natural states and provides accurate information about the composition and structure of these samples. The instrument is equally capable of performing dynamic in situ experiments as it is conventional high resolution SEM imaging and analysis.
Quattro allows the study of samples at 100% humidity, such as these pollen grains, in ESEM mode.
Unique Environmental Mode
Quattro’s environmental SEM (ESEM™) capability enables the study of materials in a wide range of conditions such as reactive, wet, humid or hot environments. Being able to study materials in a variety of settings is essential in the development of new materials and products across a broad spectrum of disciplines such as automotive, packaging, construction, coatings and energy.
By being able to study the progress of chemical reactions like corrosion, etching, oxidation, catalysis and crystal growth, the Quattro ESEM™ has the potential to revolutionize not only science but the environment itself.
Salt crystals dissolving and recrystallizing as water is either condensing or evaporating in ESEM mode.