Title: Synthesis of 2D and Quantum Materials using AI/ML
Abstract: Two-dimensional (2D) and other quantum materials are of interest for next-generation devices such as lightweight transistors and quantum light emitters, as well as for demonstrating novel physics. However, the synthesis of 2D materials and quantum dots is significantly more complicated than traditional 3D semiconductor thin film growth. In this talk, I will discuss our recent efforts to synthesize high-quality 2D films and 0D quantum dots using molecular beam epitaxy (MBE). I will discuss the general recipe that we have found for growing wafer-scale 2D materials with a low density of these defects and a highly controllable thickness. This recipe works to grow films down to a few monolayers, allowing the unusual quantum mechanical effects to be observed. I will show recent work in which we use selective area epitaxy to grow 2D materials as site-controlled and size-controlled quantum dots. I will then discuss our recent efforts to use AI/ML techniques to improve film synthesis using process modeling and Bayesian optimization.
Bio: Prof. Stephanie Law is an Associate Professor and Wilson Faculty Fellow in the department of Materials Science and Engineering at Penn State University. She holds affiliate appointments in the Penn State Department of Physics and the Institute for Energy and the Environment. She is the Director of Education and Training programs for the Penn State Two-Dimensional Crystal Consortium and is an Associate Editor for the Journal of Vacuum Science and Technology. She received her B.S. in Physics from Iowa State University and her Ph.D. in Physics from the University of Illinois Urbana Champaign. She then held a postdoctoral position in the Electrical Engineering department at Illinois before moving to the University of Delaware as an Assistant Professor. Prof. Law has won the North American Molecular Beam Epitaxy Young Investigator award, the Department of Energy Early Career award, the AVS Peter Mark Memorial Award, the International Conference on Molecular Beam Epitaxy Young Investigator Award, and the Presidential Early Career Award for Scientists and Engineers (PECASE). She is a fellow of the American Vacuum Society.
Host: Ioannis Kymissis