Curvature Determination Method for Diverging Acoustic Lens of Underwater Acoustic Transducer. [PDF]
Sensors (Basel)Li M, Xin M, Yang F, Luo Y, Liu J, Wu N.
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SQUID-COMM: a Colossal Squid-inspired distributed communication framework for real-time multi-node aquaculture monitoring networks with adaptive bioluminescent signaling and neuromorphic edge intelligence. [PDF]
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Investigating acoustic propagation in gassy marine sediments using a bubbly gel mimic
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Emitting and controlling ultra-low frequency underwater acoustic waves using a marine vibration system with time interfacing. [PDF]
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Experimental investigation of composite metamaterial for underwater sound absorption
Applied Acoustics, 2023Nansha Gao, Jie Deng, Qiaogao Huang
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Underwater sound absorption characteristics of metamaterials with steel plate backing
Applied Acoustics, 2019Abstract Generally, the better sound absorption characteristics can be achieved in the low frequency band by embedding resonance units into the conventional anechoic coating. However, in this way, the frequency range of effective sound absorption is relatively narrow, which limits the application of anechoic coating in engineering.
Kangkang Shi, Guoyong Jin, Tiangui Ye
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Underwater sound absorption of a meta-absorption layer with double negativity
Applied Acoustics, 2021Abstract An underwater meta-absorption layer (MAPL) is presented which consists of multiple steel scatters and a rubber matrix. Double negativity of the MAPL can be found within multiple frequency ranges with the effective medium method due to local resonance and wave scattering.
Ting Wang, Junyi Liu, Meixia Chen
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Low-frequency underwater sound absorption metamaterial
Physica Scripta, 2022Abstract Air bubbles in liquid are known for exhibiting low-frequency resonance and can be considered as passive scatterers. In this paper, we design an acoustic metamaterial consisting of an air bubble in a water-filled metal shell with an opening to develop low frequency underwater sound absorber. Numerical simulation is carried out
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Acoustically sticky topographic metasurfaces for underwater sound absorption
The Journal of the Acoustical Society of America, 2018A class of metasurfaces for underwater sound absorption, based on a design principle that maximizes thermoviscous loss, is presented. When a sound meets a solid surface, it leaves a footprint in the form of thermoviscous boundary layers in which energy loss takes place. Considered to be a nuisance, this acoustic to vorticity/entropy mode conversion and
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