Broadband solid cloak for underwater acoustics

By Yi Chen, Mingye Zheng, Xiaoning Liu, Yafeng Bi, Zhaoyong Sun, Ping Xiang, Jun Yang, G. Hu. 2016

140 citations recorded by the source corpus.

Application of transformation theory to underwater acoustics has been a challenging task because highly anisotropic density is unachievable in water. A possible strategy is to exploit anisotropic modulus rather than density, while has not been experimentally demonstrated. We present an annular underwater acoustic cloak designed from particular graded solid microstructures. The geometry tailored microstructures mimics meta-fluid with highly anisotropic modulus through substantially suppressed shear wave. Transient wave experiments are conducted with the cloak in a designed 2D underwater waveguide system and proved excellent cloaking performance for enclosed target over broadband frequency 9-15 kHz. This finding paves the way for controlling underwater acoustics using the structured anisotropic modulus meta-fluid.

Subfields: Aerospace Engineering, Biomedical Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/de38d359d8edc87d97ec1f3c69650b82790c1895

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Biomedical Engineering

1. Hanbei Guo
2. Ting Wang
3. Junyi Liu

In Electronic, Optical and Magnetic Materials

1. Hanbei Guo
2. Ting Wang
3. Junyi Liu

Citations in the corpus

• A Review of Acoustic Metamaterials and Phononic Crystals (2020, background): “(a) Image of the cloak machined from an aluminum block; (b) Enlarged view of one segment, highlighted in (a) [91].”