The impedance-matched reduced acoustic cloaking with realizable mass and its layered design

TL;DR

This paper introduces a practical, impedance-matched acoustic cloaking design with manageable mass, utilizing a layered isotropic material approach, demonstrated through numerical simulations to significantly reduce scattering of an air cylinder.

Contribution

The paper proposes a reduced acoustic cloaking method with impedance matching and a layered isotropic design, making it more feasible for real-world applications.

Findings

Layered cloak significantly reduces scattering

Impedance matching improves cloaking performance

Numerical results validate the layered design

Abstract

The authors present an impedance-matched reduced version of acoustic cloaking whose mass is in a reasonable range. A layered cloak design with isotropic material is also proposed for the reduced cloak. Numerical calculations from the transfer matrix methods show that the present layered cloak can reduce the scattering of an air cylinder substantially.