题目：Structuring Sound and Vibration Fields by Metastructures
时间：2026年10月27日 10:00-11:00
地点：机械与动力工程学院A楼 F310会议室
邀请人：李富才 教授（振动、冲击、噪声研究所）
Biography
Badreddine Assouar is a Director of Research at the CNRS, and since 2021 the Director of the LabCom MOLIÈRE. He created and has led the “Acoustic Metamaterials and Phononics group at the University of Lorraine, where he is developing research on acoustic and elastic metamaterials, metasurfaces, phononics and SAW devices. He has served on many technical program committees of international conferences and organized numerous international conferences and workshops. He is also the Chief Editor of APS Open Science.
Abstract
In this general seminar, we will present an overview of recent research developments in the field of acoustic and elastic metastructures, with a focus on how these architected materials can be used to structure and control sound and vibrations. By leveraging the physics of special resonances, wave interference and hybridization, and symmetry-breaking, metastructures enable functionalities such as wave steering, focusing, isolation, and absorption, all within compact, lightweight platforms.
In the first part of this seminar, we will discuss recent advances in the concept of elastic Bound states In the Continuum (BICs). These BICs offer a powerful mechanism for achieving infinite quality factor resonances, which are particularly promising for enhancing sound and vibration absorption and for developing highly sensitive sensors.
In the second part of the seminar, we will introduce the emerging concept of phononic skyrmions, topologically nontrivial configurations in elastic fields that mimic their magnetic counterparts. These phononic structures open exciting opportunities for encoding and transporting vibrational information in robust, reconfigurable ways.
学院OA系统
jAccount登录
ENGLISH
地址：上海市东川路800号上海交通大学闵行校区机械与动力工程学院
邮编：200240
Email：sjtume@sjtu.edu.cn