Electron Optics Facility

ESEM

The FEI Philips XL 40 ESEM is a tungsten source environmental scanning electron microscope capable of high and low vacuum imaging.

Philips XL 40 ESEM

Overview

The FEI Philips XL 40 Environmental Scanning Microscope is a large chamber scanning electron microscope capable of imaging hydrated and contaminated samples. Advanced accessories include a thin-window energy dispersive spectrometer (EDS) and hot or cold stages. The system is operated via easy-to-use software control using a Windows user interface. The ESEM can be used for organic and inorganic scanning electron analysis.

A close up of the primary ESEM instrument.

Capabilities

Remote Training and Collaboration

  • New laboratory web camera
  • Zoom screen-share abilities from both the microscope control and AzTEC analysis computers
  • Remote technical assistance with Raritan DKX4-101 KVM-over-IP
  • Remote operation with Raritan DKX4-101 KVM-over-IP

Instrumentation

  • The NC/VP Materials Characterization Facility is home to the only environmental scanning electron microscope on campus.
  • The instrument is capable of operating in low or high vacuum modes. It includes Oxford AZtec EDS and both high (1,000 C) and low temperature stages.
    • Remember to insert the EDS detector before use and remove it before venting. If the detector is not inserted, the counts will be VERY low.
    • Insert the detector:
      • On the AZtec computer, in the bottom right corner of the screen, click on the EDS icon and select Insertion then In. 
    • Remove the detector:
      • On the AZtec computer, in the bottom right corner of the screen, click on the EDS icon and select Insertion then OUT.
      • WARNING: This must be done before venting the chamber to prevent equipment damage.
  • Large area montage imaging and elemental mapping (up to few square centimeters)
  • EDS-based phase analysis
  • Chemical contrast imaging and EDS-based particle analysis (Oxford AZtecFeature)
  • Crystallographic phase mapping, texture analysis and grain size orientation distribution by Electron Backscatter Diffraction (EBSD, Oxford AZtecCrystal)

Research micrograph in the ESEM system.

Training

Courses

Michigan Tech offers many undergraduate and graduate courses related to materials characterization.

Some of these courses offer direct, hands-on training in scanning electron microscopy.