Materials Transformations and Dynamic Phenomena at Solid-Liquid Interfaces

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Monday, January 28, 2019 -
11:00am to 12:00pm
Brauer Hall, Room 12
Dr. Haimei Zheng, Materials Science Division, Lawrence Berkeley National Laboratory

 

An understanding of solid-liquid interfaces is significant for various applications including solution based nanomaterials synthesis, solar to fuel conversion, batteries and so on.  Transmission electron microscopy is evolving as an increasingly important tool for multidisciplinary research in areas ranging from materials science and engineering to biology, physics and chemistry. My group has been studying materials transformations and dynamic phenomena at solid-liquid interfaces by developing and applying in situ liquid phase electron microscopy. In this talk, I will show a series of our studies with liquid phase electron microscopy, including the revealing of 2D nanocrystal growth in solution, semiconductor nanocrystal deformability during self assembly, and dissolution-deposition at electrode-electrolyte interfaces during charge cycles in a nanobattery liquid cell. At the end, the future challenges and opportunities of in situ electron microscopy will be discussed.

 

 Dr. Haimei Zheng is a staff scientist in Materials Sciences Division at Lawrence Berkeley National Laboratory (LBNL) and she is also an adjunct professor in Department of Materials Science and Engineering at University of California, Berkeley. Dr. Zheng earned her Ph.D at University of Maryland, College Park. She completed her Ph.D research with Prof. Ramesh in Materials Science and Engineering at UC Berkeley. Thereafter, she became a postdoc with Prof. Paul Alivisatos in Chemistry at UC Berkeley and jointly at National Center for Electron Microscopy of Lawrence Berkeley National Laboratory.

Dr. Zheng has been leading her research group at LBNL since 2010. She currently researches physical and chemical processes of materials with a focus on materials transformations and dynamic phenomena at solid-liquid interfaces. Her primary approach is developing and applying in situ liquid phase electron microscopy. Dr. Zheng has over 100 publications with the total citations more than 17,500 times and an H index of 48. She received DOE Office of Science Early Career Award in 2011, LBNL Director’s award for exceptional scientific achievements in 2013. She was promoted to a senior scientist in LBNL in 2018. More information is available at http://haimei.zheng.lbl.gov

 

 Hosts: Bryce Sadtler & Rohan Mishra

Faculty, students, and the general public are invited.

 

http://haimeizheng.lbl.gov/

Hosted by: Bryce Sadtler/Rohan Mishra

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