Acoustic transmission enhancement through a soft interlayer with a reactance boundary

2015 ◽  
Vol 138 (2) ◽  
pp. 782-790 ◽  
Author(s):  
Li Quan ◽  
Feng Qian ◽  
Xiaozhou Liu ◽  
Xiufen Gong
Keyword(s):  
Acoustic Transmission ◽  
Soft Interlayer ◽  
Transmission Enhancement

scholarly journals Tunable Fluid-Type Metasurface for Wide-Angle and Multifrequency Water-Air Acoustic Transmission

Research ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Zhandong Huang ◽  
Shengdong Zhao ◽  
Yiyuan Zhang ◽  
Zheren Cai ◽  
Zheng Li ◽  
...  
Keyword(s):  
Incident Angle ◽  
Acoustic Energy ◽  
Wide Angle ◽  
Acoustic Metamaterials ◽  
Fluid Type ◽  
Acoustic Transmission ◽  
Interface Instability ◽  
Practical Applications ◽  
Air Interface ◽  
Transmission Enhancement

Efficient acoustic communication across the water-air interface remains a great challenge owing to the extreme acoustic impedance mismatch. Few present acoustic metamaterials can be constructed on the free air-water interface for enhancing the acoustic transmission because of the interface instability. Previous strategies overcoming this difficulty were limited in practical usage, as well as the wide-angle and multifrequency acoustic transmission. Here, we report a simple and practical way to obtain the wide-angle and multifrequency water-air acoustic transmission with a tunable fluid-type acoustic metasurface (FAM). The FAM has a transmission enhancement of acoustic energy over 200 times, with a thickness less than the wavelength in water by three orders of magnitude. The FAM can work at an almost arbitrary water-to-air incident angle, and the operating frequencies can be flexibly adjusted. Multifrequency transmissions can be obtained with multilayer FAMs. In experiments, the FAM is demonstrated to be stable enough for practical applications and has the transmission enhancement of over 20 dB for wide frequencies. The transmission enhancement of music signal across the water-air interface was performed to demonstrate the applications in acoustic communications. The FAM will benefit various applications in hydroacoustics and oceanography.

scholarly journals Acoustic Transmission Enhancement through a Periodically Structured Stiff Plate without Any Opening

2010 ◽  
Vol 105 (7) ◽  
Author(s):  
Zhaojian He ◽  
Han Jia ◽  
Chunyin Qiu ◽  
Shasha Peng ◽  
Xuefei Mei ◽  
...  
Keyword(s):  
Acoustic Transmission ◽  
Transmission Enhancement

Broadband acoustic transmission enhancement through metamaterials with gradual-type channels

2018 ◽  
Vol 11 (7) ◽  
pp. 077302 ◽  
Author(s):  
Weipeng Tang ◽  
Chunyu Ren ◽  
Shuaishuai Tong ◽  
Zixiang Zhou
Keyword(s):  
Acoustic Transmission ◽  
Transmission Enhancement

Acoustic transmission enhancement through a stiff plate drilled with subwavelength side openings

2011 ◽  
Vol 93 (3) ◽  
pp. 34004 ◽  
Author(s):  
Pai Peng ◽  
Chunyin Qiu ◽  
Rui Hao ◽  
Jiuyang Lu ◽  
Zhengyou Liu
Keyword(s):  
Acoustic Transmission ◽  
Transmission Enhancement

Tunable asymmetric acoustic transmission via binary metasurface and zero-index metamaterials

2021 ◽  
Vol 118 (11) ◽  
pp. 113501
Author(s):  
Zhongming Gu ◽  
Xinsheng Fang ◽  
Tuo Liu ◽  
He Gao ◽  
Shanjun Liang ◽  
...  
Keyword(s):  
Acoustic Transmission ◽  
Zero Index

scholarly journals High-amplitude sound propagation in acoustic transmission-line metamaterial

2021 ◽  
Vol 118 (10) ◽  
pp. 104102
Author(s):  
Jiangyi Zhang ◽  
Vicente Romero-García ◽  
Georgios Theocharis ◽  
Olivier Richoux ◽  
Vassos Achilleos ◽  
...  
Keyword(s):  
Transmission Line ◽  
Sound Propagation ◽  
High Amplitude ◽  
Acoustic Transmission
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