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Broadband electromagnetic cloaking with smart metamaterials.

Publication ,  Journal Article
Shin, D; Urzhumov, Y; Jung, Y; Kang, G; Baek, S; Choi, M; Park, H; Kim, K; Smith, DR
Published in: Nature communications
January 2012

The ability to render objects invisible with a cloak that fits all objects and sizes is a long-standing goal for optical devices. Invisibility devices demonstrated so far typically comprise a rigid structure wrapped around an object to which it is fitted. Here we demonstrate smart metamaterial cloaking, wherein the metamaterial device not only transforms electromagnetic fields to make an object invisible, but also acquires its properties automatically from its own elastic deformation. The demonstrated device is a ground-plane microwave cloak composed of an elastic metamaterial with a broad operational band (10-12 GHz) and nearly lossless electromagnetic properties. The metamaterial is uniform, or perfectly periodic, in its undeformed state and acquires the necessary gradient-index profile, mimicking a quasi-conformal transformation, naturally from a boundary load. This easy-to-fabricate hybrid elasto-electromagnetic metamaterial opens the door to implementations of a variety of transformation optics devices based on quasi-conformal maps.

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Published In

Nature communications

DOI

EISSN

2041-1723

ISSN

2041-1723

Publication Date

January 2012

Volume

3

Start / End Page

1213
 

Citation

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Shin, D., Urzhumov, Y., Jung, Y., Kang, G., Baek, S., Choi, M., … Smith, D. R. (2012). Broadband electromagnetic cloaking with smart metamaterials. Nature Communications, 3, 1213. https://doi.org/10.1038/ncomms2219
Shin, Dongheok, Yaroslav Urzhumov, Youngjean Jung, Gumin Kang, Seunghwa Baek, Minjung Choi, Haesung Park, Kyoungsik Kim, and David R. Smith. “Broadband electromagnetic cloaking with smart metamaterials.Nature Communications 3 (January 2012): 1213. https://doi.org/10.1038/ncomms2219.
Shin D, Urzhumov Y, Jung Y, Kang G, Baek S, Choi M, et al. Broadband electromagnetic cloaking with smart metamaterials. Nature communications. 2012 Jan;3:1213.
Shin, Dongheok, et al. “Broadband electromagnetic cloaking with smart metamaterials.Nature Communications, vol. 3, Jan. 2012, p. 1213. Epmc, doi:10.1038/ncomms2219.
Shin D, Urzhumov Y, Jung Y, Kang G, Baek S, Choi M, Park H, Kim K, Smith DR. Broadband electromagnetic cloaking with smart metamaterials. Nature communications. 2012 Jan;3:1213.

Published In

Nature communications

DOI

EISSN

2041-1723

ISSN

2041-1723

Publication Date

January 2012

Volume

3

Start / End Page

1213