Applied Physics Seminar

***Refreshments at 3:45pm on Gates-Thomas mezzanine

Abstract:

The last decade has seen a paradigm change in (scanning) transmission electron microscopy ((S)TEM), with unprecedented improvements in spatial, spectroscopic, and temporal resolution being realized by aberration correctors, monochromators, and ultrafast detectors. Spatial resolution now extends to the picometer level, spectroscopic resolution into the sub-10meV regime and temporal resolution is now on the nanosecond timescale. The challenge now in performing experiments in an (S)TEM lies in the following three goals: 1) to implement in-situ capabilities to allow engineering systems to be studied under their native and realistic environmental conditions; 2) to achieve high dimensionality and statistical significance in in-situ imaging; 3) to achieve full autonomy in TEM experiments and data analytics. In this presentation, I will discuss the recent developments in the design and implementation of artificially intelligent TEM and in-situ environmental experiments being pursued in my group at UC Irvine. Examples will be presented of the use of these capabilities for the direct imaging of the fundamental processes important for energy storage and conversion materials. Using machine learning to achieve superresolution 3D imaging beyond state-of-the-art and study in-situ materials dynamics will also be discussed.

More about the Speaker:

Huolin Xin received his Ph.D. from the Physics Department of Cornell University in 2011. He was a postdoc at Lawrence Berkeley National Lab from 2011 to 2013. He worked at Brookhaven National Laboratory as a principal investigator from 2013 to 2018. He joined the University of California, Irvine in 2018. His research has resulted in more than 270 peer-reviewed publications (h-index 67 and citations 21,800). He was named the Climate Action 30 by Insider and Highly Cited Researcher by Clarivate. He received the MRS Outstanding Early-Career Investigator Award, the DOE Early Career Award, the MSA Burton Medal Award, the UCI Distinguished Early-Career Faculty for Research, the Beall Innovation Award in Physical Science. Xin has published more than 300 peer-reviewed publications and has co-authored more than 43 publications in Science and Nature sister journals (corresponding author on 18).