Transparency Effect Induced by Elastic Metamaterials
In the quasi-static limit, it is shown that the neutral inclusion concept can be applied to predict the transparency phenomenon. The transparency designs for a coated ellipsoid for electromagnetic wave and a multilayered sphere for acoustic wave with metamaterials have been proposed. In this paper, we will show how to cloak a solid object with elastic wave metamaterial, where the shear wave in the system is nontrivial. Based on the Mie theory, it is shown that the effective bulk modulus, mass density, and shear modulus of the assemblage made of the coated spheres dominate the zero, the first and the second order scattering coefficients of one coated sphere, respectively. So letting the first three scattering coefficients vanish, the isotropic coated metamaterial can be determined in order to make a spherical object transparent for elastic wave, this again corresponds to the neutral inclusion concept.
Xiaoming Zhou Jin Hu Gengkai Hu
Department of Applied Mechanics,School of Science,Beijing Institute of Technology Beijing 100081,China
国际会议
Progress in Electromagnetics Research Symposium 2008(2008年电磁学研究新进展学术研讨会)(PIERS 2008)
杭州
英文
1-4
2008-03-24（万方平台首次上网日期，不代表论文的发表时间）