Format

Send to:

Choose Destination
See comment in PubMed Commons below
Phys Rev Lett. 2008 Jan 18;100(2):024301. Epub 2008 Jan 14.

Scattering theory derivation of a 3D acoustic cloaking shell.

Author information

  • 1Department of Electrical and Computer Engineering, Duke University, Durham, North Carolina 27708, USA. cummer@ee.duke.edu

Abstract

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.

PMID:
18232873
[PubMed]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for American Physical Society
    Loading ...
    Write to the Help Desk