Ideal Cylindrical Cloak: Perfect but Sensitive to Tiny Perturbations

by: Zhichao Ruan, Min Yan, Curtis W Neff, Min Qiu

Physical Review Letters, Vol. 99, No. 11. (2007)

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Abstract

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.

@article{citeulike:2185551, abstract = {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.}, author = {Ruan, Zhichao and Yan, Min and Neff, Curtis W. and Qiu, Min }, citeulike-article-id = {2185551}, doi = {10.1103/PhysRevLett.99.113903}, journal = {Physical Review Letters}, keywords = {cloaking, metamaterial}, number = {11}, posted-at = {2008-02-04 13:02:44}, priority = {2}, publisher = {APS}, title = {Ideal Cylindrical Cloak: Perfect but Sensitive to Tiny Perturbations}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PRLTAO000099000011113903000001\&idtype=cvips\&gifs=yes}, volume = {99}, year = {2007} }

RIS record

TY - JOUR ID - citeulike:2185551 TI - Ideal Cylindrical Cloak: Perfect but Sensitive to Tiny Perturbations JF - Physical Review Letters VL - 99 IS - 11 PB - APS N2 - 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. KW - cloaking KW - metamaterial AU - Ruan, Zhichao AU - Yan, Min AU - Neff, Curtis AU - Qiu, Min PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PRLTAO000099000011113903000001&idtype=cvips&gifs=yes ER -

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