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Enhancing the resolution in imaging using folded metamaterial split ring resonator structure at microwave frequencies

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dc.contributor.author Bindu, C.
dc.contributor.author Chakyar, Sreedevi P.
dc.contributor.author Sebastian, Anju
dc.contributor.author Simon, Sikha K.
dc.contributor.author Jose, Jovia
dc.contributor.author Paul, Nees
dc.contributor.author Umadevi, K. S.
dc.contributor.author Kizhakooden, Joe
dc.contributor.author Andrews, Jolly
dc.contributor.author Joseph, V. P.
dc.date.accessioned 2025-01-16T08:00:19Z
dc.date.available 2025-01-16T08:00:19Z
dc.date.issued 2019-10-19
dc.identifier.citation AIP Conference Proceedings Volume 2162, Issue 1 en_US
dc.identifier.issn 1551-7616
dc.identifier.uri https://doi.org/10.1063/1.5130277
dc.identifier.uri http://starc.stthomas.ac.in:8080/xmlui/xmlui/handle/123456789/379
dc.description.abstract A novel and better resolution topology for reducing the sensing area of conventional Split Ring Resonator (SRR) metamaterial structure is proposed. The conventional planar SRR structure is fabricated on a thin flexible film and is folded to raise its split region slightly up with respect to the plane of the SRR (Folded Split Ring Resonator-FSRR).The structure exhibits strong localization of electric field in the projected region of the sensor, by confining the evanescent waves in that region having dimension much smaller than the operating wavelength. The proposed sensor is placed between transmitting and receiving probes of a Vector Network Analyzer (VNA) to form the sensing probe. Two dielectric samples arranged at different distances of separation are scanned and the corresponding transmission characteristics S21 are drawn for analysing the image resolution. The resolution and sensitivity of the above proposed sensor is compared with conventional SRR and is found to be superior in performance. This novel FSRR provides a better resolution and thereby overcomes the diffraction limit in imaging up to λ/30, whereas for the conventional planar SRR it will be around λ /15. The design is simple, compact and inexpensive. The potential of proposed sensor can be extended to sub-wavelength imaging of dielectric materials, biological samples and can be used for non-destructive testing. en_US
dc.language.iso en en_US
dc.publisher AIP Publishing en_US
dc.subject Wave mechanics en_US
dc.subject Microwave frequencies en_US
dc.subject Vector network analyzer en_US
dc.subject Dielectric materials en_US
dc.subject Optical metamaterials en_US
dc.subject Nondestructive testing techniques en_US
dc.subject Diffraction optics en_US
dc.title Enhancing the resolution in imaging using folded metamaterial split ring resonator structure at microwave frequencies en_US
dc.type Article en_US


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