Ideal cylindrical cloak: Perfect but sensitive to tiny perturbations
2007 (English)In: Physical Review Letters, ISSN 0031-9007, Vol. 99, no 11Article in journal (Refereed) Published
A cylindrical wave expansion method is developed to obtain the scattering field for an ideal two-dimensional cylindrical invisibility cloak. A near-ideal model of the invisibility cloak is set up to solve the boundary problem at the inner boundary of the cloak shell. We confirm that a cloak with the ideal material parameters is a perfect invisibility cloak by systematically studying the change of the scattering coefficients from the near-ideal case to the ideal one. However, because of the slow convergence of the zeroth-order scattering coefficients, a tiny perturbation on the cloak would induce a noticeable field scattering and penetration.
Place, publisher, year, edition, pages
2007. Vol. 99, no 11
Atom and Molecular Physics and Optics
IdentifiersURN: urn:nbn:se:kth:diva-16954DOI: 10.1103/PhysRevLett.99.113903ISI: 000249474700027ScopusID: 2-s2.0-34548760813OAI: oai:DiVA.org:kth-16954DiVA: diva2:334997
QC 20100525 QC 201111292010-08-052010-08-052011-11-29Bibliographically approved