Hybrid device for acoustic noise reduction and energy harvesting based on a silicon micro-perforated panel structure  

作　　者：吴少华 杜利东 孔德义 平皓月 方震 赵湛 

机构地区：[1]State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences [2]State Key Laboratory of Transducer Technology, Institute of Intelligent Machines, Chinese Academy of Sciences [3]University of Chinese Academy of Sciences

出　　处：《Chinese Physics B》2014年第4期351-357,共7页中国物理B（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.51305423);the National Basic Research Program of China(GrantNo.2011CB302104)

摘　　要：A kind of hybrid device for acoustic noise reduction and vibration energy harvesting based on the silicon micro- perforated panel （MPP） resonant structure is investigated in the article. The critical parts of the device include MPP and energy harvesting membranes. They are all fabricated by means of silicon micro-electro-mechanical systems （MEMS） tech- nology. The silicon MPP has dense and accurate micro-holes. This noise reduction structure has the advantages of wide band and higher absorption coefficients. The vibration energy harvesting part is formed by square piezoelectric membranes arranged in rows. ZnO material is used as it has a good compatibility with the fabrication process. The MPP, piezo- electric membranes, and metal bracket are assembled into a hybrid device with multifunctions. The device exhibits good performances of acoustic noise absorption and acoustic-electric conversion. Its maximum open circuit voltage achieves 69.41 mV.A kind of hybrid device for acoustic noise reduction and vibration energy harvesting based on the silicon micro- perforated panel （MPP） resonant structure is investigated in the article. The critical parts of the device include MPP and energy harvesting membranes. They are all fabricated by means of silicon micro-electro-mechanical systems （MEMS） tech- nology. The silicon MPP has dense and accurate micro-holes. This noise reduction structure has the advantages of wide band and higher absorption coefficients. The vibration energy harvesting part is formed by square piezoelectric membranes arranged in rows. ZnO material is used as it has a good compatibility with the fabrication process. The MPP, piezo- electric membranes, and metal bracket are assembled into a hybrid device with multifunctions. The device exhibits good performances of acoustic noise absorption and acoustic-electric conversion. Its maximum open circuit voltage achieves 69.41 mV.

关 键 词：hybrid device noise energy harvesting acoustic noise reduction silicon micro-perforated panel 

分 类 号：O327[理学—一般力学与力学基础] O422.8[理学—力学]