Broadband acoustic amplification via impedance-matched meta-structure resonator

Jia, Xiao1,2,3; Li, Yang1; Zhou, Yinghao2,3; Yan, Ming2,3; Hong, Minghui1

2018-11

10.7567/APEX.11.117301

Applied Physics Express   影响因子和分区

1882-0778

1882-0786

The narrow bandwidth and low amplification performance of a subwavelength acoustic resonator greatly limit its applications. In this study, broadband acoustic amplification using an array of two-dimensional quarter-wavelength resonators is investigated. A new acoustic resonator unit is designed, which contains one open end with an impedance-gradient meta-structure and another closed end to confine the acoustic transmission and achieve sound amplification. The sound pressure level (SPL) gain and bandwidth of the resonator can be controlled by changing its geometric parameters. In an energy-harvesting experiment, the broadband amplification resonator provides a 17.2-dB SPL gain and enhanced output voltages. (C) 2018 The Japan Society of Applied Physics

SCI ; EI

英语

通讯

State Key Laboratory of Luminescence and Applications[SKLA-2018-09]

Physics

Physics, Applied

WOS:000447160800001

IOP PUBLISHING LTD

20184506029665

Acoustic impedance ; Acoustic resonators ; Acoustic wave transmission ; Bandwidth ; Energy harvesting

Energy Conversion Issues:525.5 ; Information Theory and Signal Processing:716.1 ; Acoustic Waves:751.1 ; Acoustic Properties of Materials:751.2 ; Acoustic Devices:752.1

Web of Science

1.Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117583, Singapore
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Southern Univ Sci & Technol, Shenzhen Key Lab Addit Mfg Adv Mat, Shenzhen 518055, Guangdong, Peoples R China

Jia, Xiao,Li, Yang,Zhou, Yinghao,et al. Broadband acoustic amplification via impedance-matched meta-structure resonator[J]. Applied Physics Express,2018,11(11).

Jia, Xiao,Li, Yang,Zhou, Yinghao,Yan, Ming,&Hong, Minghui.(2018).Broadband acoustic amplification via impedance-matched meta-structure resonator.Applied Physics Express,11(11).

Jia, Xiao,et al."Broadband acoustic amplification via impedance-matched meta-structure resonator".Applied Physics Express 11.11(2018).