@inproceedings{306a3acf5b5741a49aed4bab5dbee758,
title = "Tunable acoustic metamaterial based on piezoelectric ceramic transducer",
abstract = "In this paper, a tunable metamaterial consisting of periodic layers of steel, polyurea and piezoelectric ceramic transducer (PZT) was presented. The PZT layer in this structure was connected to an inductor L. Transfer matrix method was used to calculate the band structure of the sample. It was observed that an extremely narrow stop band was induced by the PZT layer with inductor L. This narrow stop band was attributed to the resonance circuit constituted by the piezoelectric layer, for the piezoelectric layer with electrodes could be seen as a capacitor. Further, homogenization was used to calculate the effective elastic constants of the sample. Results showed that the effective parameters of this structure behaved negative in the narrow stop band. The location of the narrow stop band was in the charge of inductor L, which could be used to design acoustic filters or noise insulators by changing the parameters of structure.",
keywords = "Band structure, Negative elastic constant, Transfer matrix method",
author = "Xiaohui Zhu and Jing Qiao and Guangyu Zhang and Qiang Zhou and Yingdan Wu and Longqiu Li",
note = "Publisher Copyright: {\textcopyright} 2017 SPIE.; Active and Passive Smart Structures and Integrated Systems 2017 ; Conference date: 26-03-2017 Through 29-03-2017",
year = "2017",
doi = "10.1117/12.2259963",
language = "英语",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Gyuhae Park and Alper Erturk and Jae-Hung Han",
booktitle = "Active and Passive Smart Structures and Integrated Systems 2017",
address = "美国",
}