Invited Speaker

Abstract: Vibration and noise control have been realized by using phononic crystals and acoustic metamaterials. However, these methods have been always suffering from some fundamental limitations including narrow working bandwidth and large volume. How to realize broadband vibration and noise control in a small footprint has been a challenge. Recently, as a booming branch of metamaterials, a new kind of artificial structure named metasurface has provided feasible solutions. As a 2D mapping of metamaterial, metasurface has enabled extraordinary wavefront manipulation with compact and lightweight structure of sub-wavelength scale. In this work, we have proposed a series of ultrathin metasurfaces for extraordinary elastic-wave manipulations, including omnidirectional isolation, “one-way” propagation and highly-efficient routing. The present work extends the strategy for wave and vibration control in elastodynamics and acoustics.

Biography: Dr. Bing Li is a full professor in the School of Aeronautics at Northwestern Polytechnical University. His current research interests include dynamics of elastic/mechanical metamaterials/metasurfaces, wave mechanics, vibration and noise control, nondestructive testing. He has published >100 scientific papers in top-tier peer-reviewed journals and renowned international conferences such as Nature Communications, Compos. Sci. Tech., Compos. Part A, Compos. Part B, Phys. Rev. Appl., Phys. Rev. B, J. Sound Vib., etc., >20 issued or pending patents, >40 invited presentations. Dr. Li is an Associate Editor/Editor Board Member/Topical Advisory Panel Member for five scientific journals. He has received a series of awards and honors, including Distinguished Expert of Chinese “Oversea Young Talents Program” (2020), The Youth Talent Program of Northwestern Polytechnical University (2018), the Fellow of IAAM (2023), Science and Technology Award of Shaanxi Higher Education (First place, 2021, 2025), etc.