Analysis of Cummer–Schurig acoustic cloaking
نویسندگان
چکیده
منابع مشابه
Acoustic Cloaking
Introduction An acoustic cloak is a shell surrounding an object so that sound incident from any direction passes through and around the cloak, making the cloak and the object acoustically “invisible.” We do not experience acoustic cloaking because the materials required are exotic and, as far as we know, not found in nature. Yet there is no fundamental physical restriction on acoustic cloaking....
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An acoustic cloak is a compact region enclosing an object, such that sound incident from all directions passes through and around the cloak as though the object was not present. A theory of acoustic cloaking is developed using the transformation or change-of-variables method for mapping the cloaked region to a point with vanishing scattering strength. We show that the acoustical parameters in t...
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For any E ≥ 0, we construct a sequence of bounded potentials V E n , n ∈ N, supported in an annular regionBout\Binn ⊂ R, which act as approximate cloaks for solutions of Schrödinger’s equation at energy E: For any potential V0 ∈ L∞(Binn) such that E is not a Neumann eigenvalue of −∆+ V0 in Binn, the scattering amplitudes aV0+V E n (E, θ, ω) → 0 as n → ∞. The V E n thus not only form a family of...
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ژورنال
عنوان ژورنال: New Journal of Physics
سال: 2007
ISSN: 1367-2630
DOI: 10.1088/1367-2630/9/12/450