STEMPack Spectrum Imaging

A powerful method of obtaining detailed analytic data from a sample on an electron microscope equipped with scanning mode.  

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The STEMPack™ system enables a powerful method of obtaining detailed analytic data from a sample on an electron microscope equipped with scanning mode.  By acquiring multimodal data in scanning mode, a wealth of information from precise positions within a scanned image or line profile is acquired. This approach is the basis of a family of techniques known as spectrum imaging (SI).

Spectrum imaging systematically probes a defined specimen area to gather the maximum possible information in a fully automated process. The STEMPack system supports the acquisition of data from a broad range of detectors, including: electron energy loss (EELS), characteristic x-ray emission (EDS), cathodoluminescence emission (CL), absorbed / induced current (EBAC/EBIC), and electron diffraction.  The resulting spectral data is then analyzed with powerful processing and visualization methods to reveal unique detail in the specimen. The combination of detailed spectral information with high spatial resolution is the most powerful aspect of electron microscopy and the STEMPack system can help you realize this power.

  • Maximize data flexibility and artifact rejection with feature rich acquisition options
  • Use a single application to analyze dense data sets as simply as a single spectrum; while directly cross reference data and results
  • Acquire the data size and region you choose with fully configurable acquisition
  • Jointly acquire virtually any signal produced in the electron microscope as part of a spectrum image
  • Obtain high speed and dose-efficient data acquisition for detail rich mapping using direct hardware communication
  • Both new users and seasoned practitioners can achieve outstanding results with simple, yet flexible user interface

For more information pertaining to EELS techniques, step-by-step instructions on analytical experiments, and access to downloadable spectra, please visit EELS.info, an educational site that is dedicated to supporting the EELS community.

Publications

Nature Communications
2015

Shukla, A. K.; Ramasse, Q. M.; Ophus, C.; Duncan, H.; Hage, F.; Chen, G.

Catalysis Science & Technology
2016

Cats, K. H.; Andrews, J. C.; Stéphan, O.; March, K.; Karunakaran, C.; Meirer, F.; de Groot, F. M. F.; Weckhuysen, B. M.

Microscopy Today
2015

Longo, P.; Thomas, P. J.; Aitouchen, A.; Rice, P.; Topuria, T.; Twesten, R. D.

Resources:

 

Model 777

Datasheets

STEMPack high speed EDS acquisition, model 777.U3
STEMPack high speed spectrum imaging upgrade, model 777.U2

Applications

EELS.info

Fast STEM spectrum imaging using simultaneous EELS and EDS in Gatan Microscopy Suite software
Enhanced phase identification with simultaneous STEM EDS and EELS/ELNES
Fast STEM EELS spectrum imaging analysis of Pd-Au based catalysts
A quantitative investigation of biological materials using EELS
High speed composition analysis of high Z metal alloys in DualEELS™ mode
Fast atomic level EELS mapping analysis using high energy edges in DualEELS mode
Atomic resolved EELS analysis across interfaces in III-V MOSFET high k dielectric gate stacks

Configurations

STEMPack spectrum imaging platform, model 777.U1 
STEMPack spectrum imaging platform with advanced BF/DF detector, model 963.U5
STEMPack high speed spectrum imaging upgrade, model 777.U2
STEMPack high speed EDS acquisition upgrade, model 777.U3
EDS acquisition suite, model 707.10
Diffraction imaging suite, model 703.50 
Spectrum image stage mapping, model 703.70
Cathodoluminescence spectrum imaging suite, model CLSI

System configuration, requirements, and limitations exist.  Please contact your Gatan representative for complete details.

Related products

GIF Quantum® energy filters 
Enfinium™ spectrometers
Gatan Microscopy Suite® software
STEMx™ system
Advanced STEM detector
MonoCL4 system
Vulcan cathodoluminescence detector

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