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Deformable broadband metamaterial absorbers engineered with an analytical spatial Kramers-Kronig permittivity profile
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2017 (English)In: Laser & Photonics reviews, ISSN 1863-8880, E-ISSN 1863-8899, Vol. 11, no 1, article id 1600253Article in journal (Refereed) Published
Abstract [en]

Electromagnetic (EM) materials with perfect absorption have long been investigated for their important applications in many practical technologies. The trial-and-error method has been mostly employed to achieve this target, either by varying the constituent compositions for traditional natural material absorbers or by running computer simulations for general metamaterial (MM) absorbers. In this work, the authors propose a new method with analytical guidance to build omnidirectional perfect absorbers inspired by the recently proposed spatial Kramers-Kronig (KK) nonreflecting dielectric profile. The subtle combination of the spatial and time dispersions in the metamaterial-engineered KK profile gives the desired broadband response property. More importantly, these features remain invariant when the sample is uniformly compressed or stretched with large thickness change, i.e., this particular broadband absorber is deformable, which has been firstly reported in the literature. The current results will pave a new way to design high-efficiency EM absorbers that could also be extended in general to manipulate waves for other fields or applications. (Figure presented.).

Place, publisher, year, edition, pages
John Wiley & Sons, 2017. Vol. 11, no 1, article id 1600253
Keywords [en]
absorber, dispersion engineering, metamaterial, Deformation, Dispersion (waves), Dispersions, Broadband absorbers, Broadband response, Dielectric profiles, Metamaterial absorbers, Permittivity profiles, Trial-and-error method, Metamaterials
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-202266DOI: 10.1002/lpor.201600253ISI: 000393316000010Scopus ID: 2-s2.0-85006990457OAI: oai:DiVA.org:kth-202266DiVA, id: diva2:1075829
Note

Funding text: The authors are grateful to the partial supports from NSFC (61271085 and 91233208), NSF of Zhejiang province (LR15F050001), the Program of Zhejiang Leading Team of Science and Technology Innovation (2010R50007), Swedish VR and AOARD. QC 20170221

Available from: 2017-02-21 Created: 2017-02-21 Last updated: 2017-11-29Bibliographically approved

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He, Sailing

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