Join us for the October Characterization User Forum focused on environmental transmission electron microscopy.
DATE: Wednesday, October 8, 2025
TIME: 4:00 p.m. — 5:00 p.m. ET
LOCATION: 12-0168 (MIT.nano basement teaching space)
- Get to know your Characterization community.
- Bring questions about your data.
- Share your feedback in a user-led town hall.
- Stay up-to-date with facility news.
- Food and drink will be provided.
Each user forum also includes a spotlight talk by a graduate student or postdoc. The October forum will feature:
Visualizing material-gas reactions over broad pressure ranges in an Environmental TEM
Speaker
Hanglong Wu, Postdoc Associate
Materials Science and Engineering, MIT
Abstract
Environmental TEM (ETEM) allows researchers to image materials in controlled gaseous environments at elevated temperatures inside a TEM. This technique has been proven effective for revealing atomic-scale mechanisms that govern many metal redox reactions. In this talk, Wu will introduce the fundamentals of HF5000-IS ETEM at Characterization.nano, with a special focus on its capability for simultaneous secondary electron imaging. He will then highlight its applications in visualizing nanoscale gas-solid interfacial reactions, including iron redox processes, lime cycles and intergranular corrosion of alloys, under varying gas pressures up to ambient conditions.
Biography
Hanglong is currently a senior postdoc associate in Frances Ross's lab in DMSE. His research interests focus on developing multi-scale electrochemical liquid-phase TEM and Environmental TEM techniques for studying materials relevant to energy storage, sustainability, and semiconductor technologies.