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MAE Seminar Series: Jun Liu
September 1, 2023 @ 10:00 am - 11:00 am
Title:
Understanding Phonon Transport Phenomena at Nanoscale: Complex Crystals, Organic Systems, and Hybrid Materials
Abstract:
A better understanding of phonon transport phenomena at nanoscale facilitates the current engineering efforts toward a higher efficiency of energy utilization and energy conversion. For example, ultralow thermal conductivity in materials enables better thermal insulation and thermoelectric energy conversion. In this talk, I will start with our efforts to understand thermal transport in complex crystals, especially in ferroelectric materials, and utilize electrical field to tune their thermal conductivity on demand. Then, I will show how we understand phonon transport in organic systems and hybrid organic-inorganic layered materials to unlock the potential of these less-explored materials. Finally, I will show our recent work on the efficient conversion of waste heat into quantum spin information without using magnetic materials.
Bio:
Dr. Jun Liu is currently an Associate Professor in the Department of Mechanical and Aerospace Engineering at North Carolina State University. Prior to this, he was a postdoctoral research associate in the Department of Materials Science and Engineering at the University of Illinois at Urbana-Champaign. He received his Ph.D. in Mechanical Engineering from University of Colorado at Boulder in December 2013. He earned his B.S. in 2008 from Power and Energy Engineering at Huazhong University of Science and Technology. He is the recipient of the NC State University Outstanding Teacher Award in 2023, NSF CAREER Award in 2020, and Outstanding Dissertation Award in 2013.
