Doctoral Students
James Horwath

Alexandre Foucher
E-mail: afoucher@seas.upenn.edu
Biography:
Alexandre received a combined BS/MS in Mechanical and Industrial Engineering at Arts et Métiers ParisTech, France. He also completed a Master of Materials Science and Nanoengineering at Rice University in May 2017. He joined the group of Prof. Eric Stach at the University of Pennsylvania as a Ph.D. student in August of 2017.
Research Interest:
His research focuses on in-situ and operando diagnostics using electron microscopy in order to understand the evolution of bimetallic catalysts under working conditions. He is also working on electron pair-distribution analysis. Alexandre is part of the Integrated Mesoscale Architectures for Sustainable Catalysis (IMASC), an Energy Frontier Research Center (EFRC).



Vincent Antoine Verret

Hyeongjun Koh
E-mail: hjkoh@seas.upenn.edu
Biography:
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.
Research Interest:
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 Zheng
E-mail: jxzheng@seas.upenn.edu
Biography:
Jeffrey received a Bachelor’s degree in Materials Science and Engineering from Cornell University in 2019 and currently a Ph.D. candidate at University of Pennsylvania.
Research Interest:
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.
