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All-dielectric invisibility cloaks made of BaTiO3-loaded polyurethane foam

All-dielectric invisibility cloaks made of BaTiO3-loaded polyurethane foam
All-dielectric invisibility cloaks made of BaTiO3-loaded polyurethane foam
Transformation optics has led the way in the development of electromagnetic invisibility cloaks from science fiction to engineering practice. Invisibility cloaks have been demonstrated over a wide range of the electromagnetic spectrum, and with a variety of different fabrication techniques. However, all previous schemes have relied on the use of metamaterials consisting of arrays of sub-wavelength inclusions. We report on the first cloaking structure made of a high-kappa dielectric-loaded foam mixture. A polyurethane foam mixed with different ratios of barium titanate is used to produce the required range of permittivities, and the invisibility cloak is demonstrated to work for all incident angles over a wide range of microwave frequencies. This method will greatly facilitate the development and large-scale manufacture of a wide range of transformation optics-based structures.
Bao, D.
9223e357-8f8b-45d8-bdfa-dab0b97134bc
Rajab, K.Z.
73c2052e-0a75-4aef-b291-01ff536276e4
Hao, Y.
c7c11617-f452-4f28-8a2b-9ced9c5416c8
Kallos, E.
c96fd06b-8f8b-4a14-a1ac-4b111adc4801
Tang, W.X.
29cd6910-5c52-4031-9200-2658e0b4b899
Argyropoulos, C.
e64cf069-0f2f-4c77-8358-f56d880a4594
Piao, Y.Z.
fd87e311-1266-41f5-aeb2-5132b3926195
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Bao, D.
9223e357-8f8b-45d8-bdfa-dab0b97134bc
Rajab, K.Z.
73c2052e-0a75-4aef-b291-01ff536276e4
Hao, Y.
c7c11617-f452-4f28-8a2b-9ced9c5416c8
Kallos, E.
c96fd06b-8f8b-4a14-a1ac-4b111adc4801
Tang, W.X.
29cd6910-5c52-4031-9200-2658e0b4b899
Argyropoulos, C.
e64cf069-0f2f-4c77-8358-f56d880a4594
Piao, Y.Z.
fd87e311-1266-41f5-aeb2-5132b3926195
Yang, Shoufeng
e0018adf-8123-4a54-b8dd-306c10ca48f1

Bao, D., Rajab, K.Z., Hao, Y., Kallos, E., Tang, W.X., Argyropoulos, C., Piao, Y.Z. and Yang, Shoufeng (2011) All-dielectric invisibility cloaks made of BaTiO3-loaded polyurethane foam. New Journal of Physics, 13. (doi:10.1088/1367-2630/13/10/103023).

Record type: Article

Abstract

Transformation optics has led the way in the development of electromagnetic invisibility cloaks from science fiction to engineering practice. Invisibility cloaks have been demonstrated over a wide range of the electromagnetic spectrum, and with a variety of different fabrication techniques. However, all previous schemes have relied on the use of metamaterials consisting of arrays of sub-wavelength inclusions. We report on the first cloaking structure made of a high-kappa dielectric-loaded foam mixture. A polyurethane foam mixed with different ratios of barium titanate is used to produce the required range of permittivities, and the invisibility cloak is demonstrated to work for all incident angles over a wide range of microwave frequencies. This method will greatly facilitate the development and large-scale manufacture of a wide range of transformation optics-based structures.

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More information

Published date: 19 October 2011
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 343302
URI: https://eprints.soton.ac.uk/id/eprint/343302
PURE UUID: 57b14ec4-63e1-4c51-b1ce-d9feb6cfba18
ORCID for Shoufeng Yang: ORCID iD orcid.org/0000-0002-3888-3211

Catalogue record

Date deposited: 03 Oct 2012 11:05
Last modified: 05 Nov 2019 01:42

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