Research Activities >
Programs >
Electromagnetic Metamaterials
|
|
Electromagnetic Metamaterials and their
Approximations:
Practical and Theoretical Aspects
CSIC Building (#406),
Seminar Room 4122.
Directions: home.cscamm.umd.edu/directions
|
Isotropic
Transformation Optics and Approximate Cloaking
Professor
Allan Greenleaf
University of Rochester
|
Abstract:
Interesting transformation optics designs, such as
cloaks, field rotators, beam splitters or wormholes,
typically are based on singular changes of
variables. These inevitably give rise to physical
parameters that are both anisotropic and singular,
i.e., at least one eigenvalue goes to zero or
infinity at some points, making physical realization
of such designs a challenge.
We address this problem in the context of cloaking
by showing how to construct isotropic and
nonsingular parameters that give approximate
cloaking to any desired degree of accuracy for
electrostatic, acoustic and quantum waves. This
technique should be applicable to a wider range of
transformation optics designs. |
|
