Cylindrical invisibility cloak with simplified material parameters is inherently visible
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 99, no 23Article in journal (Refereed) Published
It was proposed that perfect invisibility cloaks can be constructed for hiding objects from electromagnetic illumination [J. B. Pendry, D. Schurig, and D. R. Smith, Science 312, 1780 (2006)]. The cylindrical cloaks experimentally demonstrated [D. Schurig , Science 314, 977 (2006)] and theoretically proposed [W. Cai , Nat. Photon. 1, 224 (2007)] have however simplified material parameters in order to facilitate easier realization as well as to avoid infinities in optical constants. Here we show that the cylindrical cloaks with simplified material parameters inherently allow the zeroth-order cylindrical wave to pass through the cloak as if the cloak is made of a homogeneous isotropic medium, and thus visible. To all high-order cylindrical waves, our numerical simulation suggests that the simplified cloak inherits some properties of the ideal cloak, but finite scatterings exist.
Place, publisher, year, edition, pages
2007. Vol. 99, no 23
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-17149DOI: 10.1103/PhysRevLett.99.233901ISI: 000251451000019ScopusID: 2-s2.0-36749078650OAI: oai:DiVA.org:kth-17149DiVA: diva2:335192
QC 20100525 QC 201111292010-08-052010-08-052011-11-29Bibliographically approved