Journal
PHYSICAL REVIEW A
Volume 79, Issue 5, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.79.053854
Keywords
finite element analysis; light scattering; optical design techniques
Categories
Funding
- German Federal Ministry of Education and Research (MetaMat)
- Thuringian State Government (MeMa)
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We describe a strategy to cloak twisted domains where, in contrast to the usual cloaks, the outer domain does not necessarily need to possess a direct connection to the point of inflation. The strategy consists of two steps. At first, a transformation is applied to untwist the geometry. Then, a second transformation is applied to create a point-transformed cloak with vanishing scattering cross section. As an extreme, yet analytical example, we construct a cloak having the shape of a spiral. Full-wave simulations confirm that electromagnetic waves impinging on the spiral-type cloak are bent around the structure with no discernible scattering.
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