Over the last three decades, electron energy loss spectroscopy (EELS) has become a formidable characterization technique. Used in combination with a transmission electron microscope (TEM), it can provide atomic-level chemical and structural characterization. This includes information about elemental composition, chemical bonding, oxidation states, valence and conduction band electronic properties, and surface properties. It can also be used in conjunction with other techniques, such as electron tomography, to provide advanced 3D mapping of elements and oxidation states.

As materials characterization becomes increasingly more demanding, there is a growing need for highly localized characterization of increasingly complex structures with ever smaller features. Fortunately, improvements in EELS and S/TEM instrumentation have kept pace with these demands, with advances including spherical aberration correction of the S/TEM lenses, as well as the use of monochromators to improve energy resolution, providing sub-angstrom spatial resolution and a higher probe current.

With our X-FEG/Mono, X-FEG/UltiMono and X-CFEG guns on the Thermo Scientific Spectra and X-FEG on the Thermo Scientific Talos S/TEM platforms, Thermo Fisher Scientific has all your EELS applications covered. These systems allow you to perform ultra-high resolution EELS analysis to obtain valuable structural, elemental, and chemical information at the atomic scale.

OptiMono+ exciting an X-FEG/UltiMono from the monochromator off state (with 1 eV energy resolution) to the monochromator fully excited state (<30 meV) at 60 kV.

Localized positions of plasmon excitations along a gold nanowire as a function of their excitation energy (between 0.18 – 1.2 eV), investigated with an electron probe of <0.2 eV energy resolution.

OptiMono+ exciting an X-FEG/UltiMono from the monochromator off state (with 1 eV energy resolution) to the monochromator fully excited state (<30 meV) at 60 kV.

Localized positions of plasmon excitations along a gold nanowire as a function of their excitation energy (between 0.18 – 1.2 eV), investigated with an electron probe of <0.2 eV energy resolution.

Applications

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Fundamental Materials Research

Novel materials are investigated at increasingly smaller scales for maximum control of their physical and chemical properties. Electron microscopy provides researchers with key insight into a wide variety of material characteristics at the micro- to nano-scale.

 

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Quality Control
 

Quality control and assurance are essential in modern industry. We offer a range of EM and spectroscopy tools for multi-scale and multi-modal analysis of defects, allowing you to make reliable and informed decisions for process control and improvement.

 


Samples


Battery Research

Battery development is enabled by multi-scale analysis with microCT, SEM and TEM, Raman spectroscopy, XPS, and digital 3D visualization and analysis. Learn how this approach provides the structural and chemical information needed to build better batteries.

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Polymers Research

Polymer microstructure dictates the material’s bulk characteristics and performance. Electron microscopy enables comprehensive microscale analysis of polymer morphology and composition for R&D and quality control applications.

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Metals Research

Effective production of metals requires precise control of inclusions and precipitates. Our automated tools can perform a variety of tasks critical for metal analysis including; nanoparticle counting, EDS chemical analysis and TEM sample preparation.

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Fibers and Filters

The diameter, morphology and density of synthetic fibers are key parameters that determine the lifetime and functionality of a filter. Scanning electron microscopy (SEM) is the ideal technique for quickly and easily investigating these features.

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Forensics

Micro-traces of crime scene evidence can be analyzed and compared using electron microscopy as part of a forensic investigation. Compatible samples include glass and paint fragments, tool marks, drugs, explosives, and GSR (gunshot residue).

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Geological Research

Geoscience relies on consistent and accurate multi-scale observation of features within rock samples. SEM-EDS, combined with automation software, enables direct, large-scale analysis of texture and mineral composition for petrology and mineralogy research.

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Catalysis Research

Catalysts are critical for a majority of modern industrial processes. Their efficiency depends on the microscopic composition and morphology of the catalytic particles; EM with EDS is ideally suited for studying these properties.

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2D Materials

Novel materials research is increasingly interested in the structure of low-dimensional materials. Scanning transmission electron microscopy with probe correction and monochromation allows for high-resolution two-dimensional materials imaging.

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Automotive Materials Testing

Every component in a modern vehicle is designed for safety, efficiency, and performance. Detailed characterization of automotive materials with electron microscopy and spectroscopy informs critical process decisions, product improvements, and new materials.

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Products

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Spectra 300

  • Highest-resolution structural and chemical information at the atomic level
  • Flexible high-tension range from 30-300 kV
  • Three lens condenser system

Spectra 200

  • High-resolution and contrast imaging for accelerating voltages from 30-200 kV
  • Symmetric S-TWIN/X-TWIN objective lens with wide-gap pole piece design of 5.4 mm
  • Sub-Angstrom STEM imaging resolution from 60 kV-200 kV

Themis ETEM

  • Precise control and knowledge of sample temperature
  • Improved sample stability, navigation, and assisted sample drift correction in x, y, and z axes
  • Advancing high-quality imaging and movie acquisition functions

Talos L120C TEM

  • Increased stability
  • 4k × 4K Ceta CMOS camera
  • TEM magnification range from 25–650 kX
  • Flexible EDS analysis reveals chemical information

Talos F200X TEM

  • High resolution/throughput in STEM imaging and chemical analysis
  • Add in situ sample holders for dynamic experiments
  • Features Velox Software for fast and easy acquisition and analysis of multimodal data

Talos F200i TEM

  • High-quality S/TEM images and accurate EDS
  • Available with dual EDS technology
  • Best all-round in situ capabilities
  • Large field-of-view imaging at high speed

Talos F200S TEM

  • Precise chemical composition data
  • High performance imaging and precise compositional analysis for dynamic microscopy
  • Features Velox Software for fast and easy acquisition and analysis of multimodal data

Talos F200C TEM

  • Flexible EDS analysis reveals chemical information
  • High-contrast, high-quality TEM and STEM imaging
  • Ceta 16 Mpixel CMOS camera provides large field of view and high read-out speed

Elemental Mapping

  • Fast and reliable information on the distribution of elements within the sample or the selected line
  • Easily exported and reported results
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Electron microscopy services for
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To ensure optimal system performance, we provide you access to a world-class network of field service experts, technical support, and certified spare parts.