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The Nion UltraSTEM 100 is an aberration corrected STEM that offers sub-angstrom resolution at both 100 keV and 60 keV. The Nion can also run at 40KeV with near 1Å resolution. A special monochromater newly developed for ASU offers ultra-fast ELLS spectra at energy resolution better than 20 meV (0.02 eV). The instrument is part of ASU's Southwestern Center for Aberration Corrected Electron Microscopy.
The instrument's flexible column provides < 1 Å resolution imaging as well as rapid nanoanalysis with an atom-sized electron probe containing >0.5 nA of current, and efficient coupling into a variety of detectors. It can also produce high-quality diffraction patterns and even CTEM images.
The UltraSTEM has produced atomic-resolution elemental maps in less than a minute and has also produced unsurpassed images of graphene and similar light-Z materials, while operating at 60 keV, below the knock-on threshold for C and other light atoms.
The principal design elements of the UltraSTEM that have made this advance possible are:
Here's a link to an informative poster on the EELS capability of the Nion
|Cost for ASU Internal||Cost for ASU Internal with Staff Assistance||Cost for Other Academic/Non-Profit||Cost for Other Academic/Non-Profit with Staff Assistance|
See ASU Emergency Procedures and Information for emergency procedures for any of the following: Personal Threat or Assault, Power Outage, Major Accidents, Flooding, Hazardous Materials Incident, Radiation Spills, Biological Spills, Suspicious Packages, Natural Disaster & Inclement Weather, Bomb Threat, Evacuation, Medical Emergency, Personal Injury, and Fire.
Emergency Phone Numbers
In an emergency, dial 911 from any campus or other phone.
Call the General ASU Emergency Information Phone at 7-9911 (on-campus phone) or 480-727-9911 or toll-free 877-278-2785 (877-ASU-ASU5) to get a recorded message. For non-emergencies, The ASU Department of Public Safety office can be reached at 5-3465 (on-campus phone) or 480-965-3465.
Active users can schedule time using their iLab account with the following link: Nion UltraSTEM 100 Schedule
If you are not currently in iLab please click on the following link: iLab registration
The Center for High Resolution Electron Microscopy is organized to provide easy access to instruments by campus-wide ASU researchers. Facility use is a telephone call or e-mail message away.
Although emphasis is placed on accommodating internal (ASU) researchers, all appropriate users, including industrial and educational researchers, are welcome.
Most samples can be accommodated in CHREM microscopes. The exception may be those that are particularly hazardous to human health. No radioactive samples, and the sample must survive in a vacuum and under the electron beam.