<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Cummer, S. A.</style></author><author><style face="normal" font="default" size="100%">Popa, B. I.</style></author><author><style face="normal" font="default" size="100%">Schurig, D.</style></author><author><style face="normal" font="default" size="100%">Smith, D. R.</style></author><author><style face="normal" font="default" size="100%">Pendry, J. B.</style></author><author><style face="normal" font="default" size="100%">Rahm, M.</style></author><author><style face="normal" font="default" size="100%">Starr, A. F.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Scattering theory derivation of a 3D acoustic cloaking shell</style></title><secondary-title><style face="normal" font="default" size="100%">Physical Review Letters</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2008</style></year></dates><number><style face="normal" font="default" size="100%">2</style></number><volume><style face="normal" font="default" size="100%">100</style></volume><isbn><style face="normal" font="default" size="100%">0031-9007</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Through acoustic scattering theory we derive the mass density and bulk modulus of a spherical shell that can eliminate scattering from an arbitrary object in the interior of the shell-in other words, a 3D acoustic cloaking shell. Calculations confirm that the pressure and velocity fields are smoothly bent and excluded from the central region as for previously reported electromagnetic cloaking shells. The shell requires an anisotropic mass density with principal axes in the spherical coordinate directions and a radially dependent bulk modulus. The existence of this 3D cloaking shell indicates that such reflectionless solutions may also exist for other wave systems that are not isomorphic with electromagnetics.</style></abstract><issue><style face="normal" font="default" size="100%">2</style></issue><accession-num><style face="normal" font="default" size="100%">WOS:000252471200036</style></accession-num><notes><style face="normal" font="default" size="100%">Times Cited: 62</style></notes></record></records></xml>