Electron Optic Documents


JEOL Resources

Documents of interest in support of your JEOL product

STEM-in-SEM – Analysis of Biological Specimens

STEM-in-SEM (Scanning Transmission Electron Microscopy in an SEM) has become a popular technique for biologists, polymer scientists and materials scientists for its ease of use, cost effectiveness and high resolution. It is especially suited to investigating the internal structure of thin film (100-200nm) samples as well as size and shape of submicron to nanometer particles. With standard SEM imaging modes on bulk samples, there are limitations in the ultimate resolution that can be achieved due in part by the beam-sample interactions. With STEM-in-SEM, the sample is very thin and the interaction volume is small. Therefore, the resolution more closely approximates the diameter of the electron beam at the exit surface of the sample allowing for high resolution; using STEM with our state of the art FE SEMs, sub-nanometer resolution is easily achieved.

Three Dimensional Image Software

JEOL’s Three Dimensional Image Software is a program that takes stereo pair SEM images and constructs a three dimensional (3D) image of the sample surface. From this 3D image, height and contour maps can be created to provide cross sectional shape and height data. The easiest approach to creating stereo pair images is to take two images of the same area but at different tilt angles. Images can be taken with any detector, at any magnification, with high or low accelerating voltage and even in low vacuum mode. With this software, any offset to the stereo pair images can be corrected for automatically and an anaglyph image or 3D model of the surface created.

TTL system: Reduction of Effects of Lens Aberrations

Imaging of nanostructured materials requires a new design of SEM that provides ultimate resolution for both imaging and microanalysis, combined with the ability to image any type of material. An innovative new SEM column design from JEOL Ltd. utilizes a hybrid lens (combination electrostatic and electromagnetic lenses) in conjunction with a Through-The-Lens (TTL) detection system to provide the user with ultimate imaging and analytical performance. The hybrid electrostatic/electromagnetic lens minimizes magnetic field effects at the sample and is relatively impervious to stray magnetic fields. The lens is characterized by low values for the spherical and chromatic aberration coefficients. Moreover, the proven Aberration Correction Lens (ACL) technology automatically maintains small probe size for both imaging and microanalysis.

XtndEDS – Flexible EDS Analysis with JEOL FE-SEM

SEM offers a unique ability to visualize specimen surface morphology (via secondary electron imaging), as well as obtain crystallographic or Z-contrast information (via backscatter electron imaging) while at the same time performing chemical composition analysis via energy dispersive spectroscopy (EDS). In the past, this simultaneous acquisition was often hindered by deficiencies in detector and column design, that would not allow sufficient count rates or sufficient resolution for adequate analysis at various working distances.

Other Resources

The following resources are available concerning Electron Optic related instruments:

  • Image Gallery
    -View a selection of electron images
  • FAQs
    -See answers from questions often asked about our SEM and Surface Analysis instruments
  • Links & Resources
    -View our page of useful and interesting links to various electron microscopy resources
  • Videos
    -View some product presentations of our instruments
  • SEM Theory and SEM Training

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  • Technical Documentation for JEOL EPMA (Microprobes)