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Electromagnetic Metamaterials
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Electromagnetic Metamaterials and their
Approximations:
Practical and Theoretical Aspects
CSIC Building (#406),
Seminar Room 4122.
Directions: home.cscamm.umd.edu/directions
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Negative
Refraction and High-performance PDE Solvers:
Superlens Cloaking of Small Dielectric Bodies
Professor
Oscar Bruno
California Institute of Technology
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Abstract:
It has been conjectured that, in the quasistatic
regime, dielectric bodies of finite size could be
perfectly cloaked by certain cylindrical
arrangements of materials of positive and negative
permittivities known as superlenses. We consider
this and related negative refraction problems, and
associated problems of solution of PDEs involving
non-coercive coefficients and singular boundaries.
In particular we show that, although they do not
cloak perfectly dielectrics objects of any size,
cylindrical superlenses do cloak, to a significant
extent, dielectric bodies of small size. |
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