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| Date | Activity | Name | Title | Video Available | Slides Available |
|---|---|---|---|---|---|
| 2023-05-18 | qcrystal23 | Liu, Chaoxing (Penn State) | Z2-nontrivial Moire Minibands and Interaction-driven Quantum Anomalous Hall Insulators in Topological Insulator Based Moire Heterostructures | Yes | No |
| 2022-03-15 | binary_c22 | Liu, Xin (Univ. of Illinois) | Electromagnetic Observations of Binary Supermassive Black Holes: New Opportunities with Large Synoptic Surveys | Yes | Yes |
| 2021-08-09 | topology21 | Liu, Chaoxing (Penn State) | Pseudo-Gauge Field in Dirac/Weyl Materials | Yes | No |
| 2012-11-17 | topomat11 | Liu, Chaoxing (Univ. Wuerzburg) | Half quantum spin Hall effect on the surface of weak topological insulators | Yes | Yes |