Wideband-Switchable Metamaterial Absorber Using Injected Liquid Metal
DC Field | Value | Language |
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dc.contributor.author | Kim, Hyung Ki | - |
dc.contributor.author | Lee, Dongju | - |
dc.contributor.author | Lim, Sungjoon | - |
dc.date.available | 2019-03-08T12:38:17Z | - |
dc.date.issued | 2016-08 | - |
dc.identifier.issn | 2045-2322 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/6629 | - |
dc.description.abstract | Metamaterial absorbers can provide good solutions for radar-cross-section (RCS) reduction. In spite of their attractive features of thinness, lightness, and low cost, resonant metamaterial absorbers have a drawback of narrow bandwidth. For practical radar applications, wideband absorbers are necessary. In this paper, we propose a wideband-switchable metamaterial absorber using liquid metal. In order to reduce RCS both for X-band and C-band, the switchable Jerusalem cross (JC) resonator is introduced. The JC resonator consists of slotted circular rings, chip resistors, and microfluidic channels. The JC resonator is etched on a flexible printed circuit board (FPCB), and the microfluidic channels are laseretched on a polydimethylsiloxane (PDMS) material. The proposed absorber can switch the absorption frequency band by injecting a liquid metal alloy into the channels. The performance of the absorber was demonstrated through full-wave simulation and through measurements employing prototypes. The experimental results showed absorption ratios of over 90% from 7.43 GHz to 14.34 GHz, and from 5.62 GHz to 7.3 GHz, with empty channels and liquid metal-filled channels, respectively. Therefore, the absorption band was successfully switched between the C-band (4-8 GHz) and the X-band (8-12 GHz) by injecting liquid metal eutectic gallium indium alloy (EGaIn) into the channels. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | NATURE PUBLISHING GROUP | - |
dc.title | Wideband-Switchable Metamaterial Absorber Using Injected Liquid Metal | - |
dc.type | Article | - |
dc.identifier.doi | 10.1038/srep31823 | - |
dc.identifier.bibliographicCitation | SCIENTIFIC REPORTS, v.6 | - |
dc.description.isOpenAccess | Y | - |
dc.identifier.wosid | 000381695200002 | - |
dc.identifier.scopusid | 2-s2.0-84983503874 | - |
dc.citation.title | SCIENTIFIC REPORTS | - |
dc.citation.volume | 6 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordPlus | ALLOY | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalWebOfScienceCategory | Multidisciplinary Sciences | - |
dc.description.journalRegisteredClass | sci | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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