Approximate Cloaking Using Transformation Optics for Acoustic and Electromagnetic Waves
نویسندگان
چکیده
منابع مشابه
Isotropic transformation optics: approximate acoustic and quantum cloaking
Transformation optics constructions have allowed the design of electromagnetic, acoustic and quantum parameters that steer waves around a region without penetrating it, so that the region is hidden from external observations. The material parameters are anisotropic, and singular at the interface between the cloaked and uncloaked regions, making physical realization a challenge. We address this ...
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In this paper, we study approximate cloaking for the Helmholtz equation in three dimensions where the cloaking device is based on transformations which blow up a cylinder of fixed height and small cross section of radius ε into the cloaked region. Assuming the zero Dirichlet boundary condition is imposed on the boundary of the cloaked region, we show that the degree of visibility is of order ε ...
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ژورنال
عنوان ژورنال: Acta Mathematica Vietnamica
سال: 2019
ISSN: 0251-4184,2315-4144
DOI: 10.1007/s40306-019-00334-5