Dr. Kai Xiao is a Distinguished Staff Scientist at Oak Ridge National Laboratory. His research focuses on the nonequilibrium synthesis and processing of atomically thin quantum materials, particularly two-dimensional transition metal dichalcogenides and their heterostructures. His current work centers on developing advanced synthesis approaches for 2D quantum materials by integrating AI/ML with in situ diagnostics, including optical spectroscopies and electron microscopy, to understand and control growth kinetics, structure evolution, and dynamic pathways that lead to the assembly of functional quantum nanostructures.
Presentation Title:
Tailoring heterogeneities in 2D quantum materials by nonequilibrium synthesis and processing with in situ diagnostics
Presentation Abstract:
Controlling heterogeneities such as defects, doping, and stacking in two-dimensional (2D) quantum materials is critical for tuning their electronic, optical, and topological properties relevant to quantum sensing and computing. This talk will present recent advances in tailoring these heterogeneities through nonequilibrium synthesis and processing integrated with real-time, in situ diagnostics. I will introduce new PLD platforms developed at CNMS featuring automation, in situ diagnostics, and AI/ML control for autonomous synthesis. Several examples will demonstrate how precision doping under nonequilibrium conditions enables the formation of Janus quantum materials, revealing fundamental growth kinetics and mechanisms that guide the design of functional 2D quantum systems.