报告题目： Metamaterial-like Vibration Isolation of Mass Chain-filled Carbon Nanotubes （质量链填充碳纳米管超材料式振动隔离）
时 间：2019年3月20日（周三）10:00
报告人：茹重庆 教授 (加拿大阿尔伯塔大学)
地 点：工科楼D345会议室
报告内容：
Inspirited by recent literature on metaelastic materials of locally resonant microstructure, vibration of CNTs (carbon nanotubes) filled with mass chains (such as carbon atom-chain or C60 molecule chain) is studied as a potential new kind of metaelastic materials. Our work revealed that a mass chain-filled CNT does exhibit negative effective mass density and an associated bandgap within a certain terahertz range of frequencies. Our results clearly confirmed that when the applied exciting frequency falls in the bandgap, forced vibration of the mass chain-filled CNT is highly isolated nearby the site of the applied stimulus and all other parts of the filled CNT remains essentially static. This result predicts that mass chain-filled CNTs could offer a new kind of metaelastic materials and exhibit remarkable vibration isolation in the terahertz range. The results shown here may provide useful insights into vibration controlling of CNT-related materials at terahertz frequencies.
报告人简介：
茹重庆，阿尔伯塔大学机械工程系教授。茹重庆博士获得北京大学固体力学博士学位，1997年加入阿尔伯塔大学，自2004起担任阿尔伯塔大学机械工程系教授。研究方向包括材料的塑性屈曲，弹性夹杂的力学问题，电弹性力学以及一些关于固体力学的应用数学问题。目前的研究兴趣涉及包括微纳尺度的固体力学，软物质固体力学以及薄膜材料固体力学等方向，相关研究在固体力学界具有广泛的影响力。
