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PIER PIER B PIER C PIER M PIER Letters
2008-08-21
Sensitivity of Transformation Cloak in Engineering
By
Jing Jing Zhang,
Yu Luo,

    Dr. Yu Luo

    The Electromagentics Academy at Zhejiang University

    Zhejiang University

    China

    Homepage

Hongsheng Chen,

    Professor Hongsheng Chen

    The Electromagnetics Academy at Zhejiang Unviersity

    Zhejiang University

    China

    Homepage

Bae-Ian Wu

    Dr. Bae-Ian Wu

    Massachusetts Institute of Technology

    USA

    Homepage

Progress In Electromagnetics Research, Vol. 84, 93-104, 2008
doi:10.2528/PIER08071301
Abstract
The sensitivity of cylindrical and spherical transformation cloak to several factors has been carefully studied in this paper. We find that the performance of the transformation cloak is quite sensitive to the crevice in the shell. When an obstacle is not completely wrapped inside the cloaking shell,noticeable scattering will be induced outside. It is also shown that if the shape of the cloak is changed in certain ways while the material parameters remain the same,the backward scattering is still zero. In addition,the combination of parts of cylindrical cloak can only achieve perfect invisibility in one direction,while combining the cylindrical cloak with two halves of spherical cloak can still make a perfect 3-dimensional (3D) invisible cloak. The findings are verified with finite element based simulations as well as theoretical calculations. Our discussion results are valuable to the implementation of cloak in engineering.
Citation
Jing Jing Zhang, Yu Luo, Hongsheng Chen, and Bae-Ian Wu, "Sensitivity of Transformation Cloak in Engineering," Progress In Electromagnetics Research, Vol. 84, 93-104, 2008.
doi:10.2528/PIER08071301
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