Oak Ridge National Laboratory installs advanced atomic-scale microscope

Oak Ridge National Laboratory Installs Advanced Scanning Transmission Electron Microscope

A new scanning transmission electron microscope installed at the Department of Energy’s Oak Ridge National Laboratory reveals individual atoms and structural defects across a wide range of materials. Operating with spatial resolution below 0.05 nanometers, the instrument combines atomic imaging with simultaneous chemical analysis to help researchers examine materials for manufacturing, energy, and transportation applications.

The Tech TL;DR:

• ORNL’s new microscope achieves spatial resolution under 0.05 nanometers to image individual atoms and material defects.
• The instrument integrates chemical analysis with high-throughput data collection for future autonomous workflows.
• Insights aim to improve lightweight vehicle alloys, permanent magnets, and industrial catalysts.

Connecting Atomic Structure to Material Performance

Understanding why certain materials withstand years of stress while others fail requires detailed views of internal microstructures. Installed in ORNL’s Advanced Microscopy Laboratory, the microscope allows scientists to study a material’s structure, composition, and defects simultaneously. David Cullen, a distinguished R&D staff member in ORNL’s Applied Microanalysis and Thermophysics Group, noted that automating workflow portions generates larger datasets to reveal underlying nanostructures governing performance and durability.

These observations support the development of advanced alloys, permanent magnets, and catalysts important to United States manufacturing and energy technologies. Automakers seeking lighter metals that improve fuel efficiency without sacrificing safety or durability rely on such characterization. Allen Haynes, director of the Department of Energy’s Powertrain Materials Core Program consortium, stated that the microscope examines specific atomic-scale features influencing strength and stability, revealing why certain lightweight alloys remain durable after years of vibration, heat, and stress.

High-Throughput Data Feeds Autonomous Microscopy Workflows

Beyond individual sample imaging, the instrument is designed for high-throughput data collection intended to feed future autonomous workflows. Researchers are developing autonomous microscopy approaches to increase the speed of generating scientific understanding. Every image and measurement contributes to a growing body of data that helps identify microstructural and chemical patterns.

The instrument also supports the investigation of permanent magnets for electric traction motors, examining how critical minerals distribute throughout materials and how substitutes affect magnetic performance at high temperatures. Scientists are examining aging catalysts to understand why some degrade while others remain effective. Supported by the Department of Energy’s Transportation Technologies Office and Alternative Fuels and Feedstocks Office, the microscope accelerates development for fuel cells, electrochemical devices for critical mineral recovery, and large-scale chemical manufacturing technologies.

UT-Battelle manages Oak Ridge National Laboratory for the Department of Energy’s Office of Science.