Controlling elastic wave with isotropic transformation materials

Abstract

There are great demands to design functional devices with isotropic materials, however the transformation method usually leads to anisotropic material parameters difficult to be realized in practice. In this letter, we derive the isotropic transformed material parameters in case of elastodynamic under local conformal transformation, they are subsequently used to design a beam bender, a four-beam antenna and an approximate carpet cloak for elastic wave with isotropic materials, the simulation results validate the derived transformed material parameters. The obtained materials are isotropic and greatly simplify subsequent experimental implementation.

12 pages, 3 figures

References in corpus (4)

• Hiding Under the Carpet: a New Strategy for Cloaking
• Dielectric Optical Cloak
• Broadband Acoustic Cloak for Ultrasound Waves
• Design method for quasi-isotropic transformation materials based on inverse Laplace's equation with sliding boundaries

Cited by in corpus (6)

• Quasi isotropic underwater acoustic carpet cloak based on latticed pentamode metafuid
• An approximate method for controlling solid elastic waves by transformation media
• Elastic wave cloaking via symmetrized transformation media
• Constraint condition on transformed relation for generalized acoustics
• Manipulate elastic waves with conventional isotropic materials
• Analytic Materials