Radiation Chemistry in Environmental Transmission Electron Microscopy

Publication Alert in ACS Nano using the Atmosphere AX for Materials Science

Tuesday publication post! 📖 This recently published study by authors at #NorthwesternUniversity looked at how the high-energy electron beam can alter reaction pathways through radiolysis—a phenomenon well-studied in liquid-phase but largely unexplored in gas-phase systems, using the #AtmosphereAX system!

The authors used a numerical model and examined radiation chemistry in both gas and liquid E-TEM environments, revealing:
☁️ Gas-phase E-TEM generates radiolytic species with lower reactivity than liquid-phase systems.
📈 However, at elevated pressures, these species accumulate to levels that alter reaction kinetics.
🔬 In case studies of aluminum oxidation and carbon monoxide disproportionation, increasing the electron beam dose rate accelerated reactions—leading to enhanced AlOx growth and carbon deposition.

These type of fundamental studies are extremely important to not only resolve a fundamental challenge in electron microscopy but also enhance our ability to rationally design materials with sub-Ångstrom precision.

Want to read the entire study? Find it here!
https://doi.org/10.1021/acsnano.4c18504

In the video the oxidation processes were tracked using the #AXONSynchronicity and #AXONDose software!

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