Experimental Verification of Plasmonic Cloaking at Microwave Frequencies with Metamaterials

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Abstract

Plasmonic cloaking is a scattering-cancellation technique based on the local negative polarizability of metamaterials. Here we report its first experimental realization and measurement at microwave frequencies. An array of metallic fins embedded in a high-permittivity fluid has been used to create a metamaterial plasmonic shell capable of cloaking a dielectric cylinder, yielding over 75% reduction of total scattering width.

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Optical Cloaking with Non-Magnetic Metamaterials

Vladimir M. Shalaev, Alexander Kildishev, Uday K Chettiar … (2006)

Artificially structured metamaterials have enabled unprecedented flexibility in manipulating electromagnetic waves and producing new functionalities, including the cloak of invisibility based on coordinate transformation. Here we present the design of a non-magnetic cloak operating at optical frequencies. The principle and structure of the proposed cylindrical cloak are analyzed, and the general recipe for the implementation of such a device is provided. The cloaking performance is verified using full-wave finite-element simulations.

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Achieving transparency with plasmonic coatings

Andrea Alù, Nader Engheta (2005)

The possibility of using plasmonic covers to drastically reduce the total scattering cross section of spherical and cylindrical objects is discussed. While it is intuitively expected that increasing the physical size of an object may lead to an increase in its overall scattering cross section, here we see how a proper design of these lossless metamaterial covers near their plasma resonance may induce a dramatic drop in the scattering cross section, making the object nearly invisible to an observer, a phenomenon with obvious applications for low observability and non invasive probe design. Physical insights into this phenomenon and some numerical results are provided.

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On the cloaking effects associated with anomalous localized resonance

Graeme Milton, Nicolae-Alexandru P Nicorovici (2006)

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Author and article information

Journal

Journal ID (publisher-id): PRLTAO

Title: Physical Review Letters

Abbreviated Title: Phys. Rev. Lett.

Publisher: American Physical Society (APS)

ISSN (Print): 0031-9007

ISSN (Electronic): 1079-7114

Publication date Created: October 2009

Publication date (Electronic): October 6 2009

Volume: 103

Issue: 15

Article

DOI: 10.1103/PhysRevLett.103.153901

PubMed ID: 19905638

SO-VID: 3e21e668-fe98-4330-9edc-fd03cd887ee4

License:

http://link.aps.org/licenses/aps-default-license

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