Hyeongjun (Jun) Koh
Jun received a Bachelor’s degree in 2016 and a Master’s degree in 2018 in Chemical and Biomolecular Engineering from Korea Advanced Institute of Science and Technology (KAIST). He is a Ph.D. candidate at University of Pennsylvania and joined Stach’s group in 2019.
Before moving to Stach’s group, his research was focused on understanding the electrical behaviors of Ti3C2Tx MXene films upon gas exposure through in-situ XRD during his Master. In Stach’s group, he is currently interested in in-situ and ex-situ exploration of Li-metal batteries using Cryo-TEM.
Jeffrey received a Bachelor’s degree in Materials Science and Engineering from Cornell University in 2019 and currently a Ph.D. candidate at the University of Pennsylvania.
His research involves studying nucleation and growth of ultra-thin ferroelectric materials film in order to develop correlations between interfacial interactions, process conditions, microstructure, and properties. He is co-advised by Prof. Eric Stach of MSE department and Prof. Troy Olsson of ESE department.
Cheng-Yu received a Bachelor’s degreein in 2019 and a Master’s Degree in 2021 in Materials Science and Engineering at from the National Taiwan University. He joined the group at Penn in the Fall of 2022.
During his Master’s studies, his research focused on reconstructing 3D microstructures by electron tomography using HAADF-STEM images. He will be researching the degradation processes of supported nanocatalyst systems through in-situ TEM imaging, combined with automated image analysis through machine learning methods.