Work

Quasi-isotropic underwater acoustic carpet cloak based on latticed pentamode metafluid

Year: 2019

Type: article

Abstract: We present a practical design of an underwater acoustic carpet cloak with 2-dimensional version of the pentamode lattice. The quasi-conformal transformation, which is achieved by inverse Laplace's equations with Neumann and Dirichlet boundaries, is used to obtain the required parameters of the impedance matching carpet cloak. The theoretical carpet cloak is pre-divided into 300 cells and then filled with the corresponding pentamode material unit cells to achieve the latticed pentamode carpet cloak. The simulation results indicate that the proposed carpet cloak has a good and broadband cloaking effect. Moreover, the technique in this work can also be used to design arbitrary shaped devices.

Source: Applied Physics Letters

DOI: 10.1063/1.5085568

Authors: Zhaoyong Sun, Xuecong Sun, Han Jia, Yafeng Bi, Jun Yang

Institutions: Chinese Academy of Sciences, Institute of Acoustics, University of Chinese Academy of Sciences, State Key Laboratory of Acoustics

Language: English

Topic: Acoustic Wave Phenomena Research

Subfield: Biomedical Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funders: National Natural Science Foundation of China, Youth Innovation Promotion Association of the Chinese Academy of Sciences, Youth Innovation Promotion Association

Awards: G1055906231, G2099116470, G2994315484, G5047444499, G6323955532