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dc.contributor.authorSong, Qing Huaen
dc.contributor.authorWu, Pin Chiehen
dc.contributor.authorZhu, Wei Mingen
dc.contributor.authorZhang, Wuen
dc.contributor.authorShen, Ze Xiangen
dc.contributor.authorChong, Peter Han Jooen
dc.contributor.authorLiang, Qing Xuanen
dc.contributor.authorTsai, D. P.en
dc.contributor.authorBourouina, Tariken
dc.contributor.authorLeprince-Wang, Yaminen
dc.contributor.authorLiu, Ai Qunen
dc.identifier.citationSong, Q. H., Wu, P. C., Zhu, W. M., Zhang, W., Shen, Z. X., Chong, P. H. J., . . . Liu, A. Q. (2019). Split Archimedean spiral metasurface for controllable GHz asymmetric transmission. Applied Physics Letters, 114(15), 151105-. doi:10.1063/1.5084329en
dc.description.abstractA chiral metasurface, which obtains chirality through a subwavelength artificial structure, is essential for realizing asymmetric transmission in the application of enantioselective sensing, spin-dependent light emission, and other polarization control systems. Here, we studied a split Archimedean spiral metasurface, which can control the propagating wave from asymmetric transmission to symmetric transmission for linear polarized light. As a proof of concept, a dual-band asymmetric transmission is demonstrated in the GHz region using the coupling of the split spiral structures. The maximum asymmetric transmission parameter reaches 53%. By manipulating the height of the split spiral structures using microfluidic technology, a broadband asymmetric transmission is obtained with the bandwidth of 25.9%. Meanwhile, the asymmetric transmission can be controlled from 50% to 0%, enabling the propagation wave from asymmetric transmission to symmetric transmission. Furthermore, the asymmetric transmission is maintained when the metasurface is bent into different curvatures, promising high potential applications for optical isolation, one-way glass, and optical interconnects.en
dc.description.sponsorshipNRF (Natl Research Foundation, S’pore)en
dc.format.extent6 p.en
dc.relation.ispartofseriesApplied Physics Lettersen
dc.rights© 2019 Author(s). Published under license by AIP Publishing.en
dc.subjectArchimedean Spiralen
dc.subjectArtificial Structuresen
dc.subjectDRNTU::Engineering::Electrical and electronic engineeringen
dc.titleSplit Archimedean spiral metasurface for controllable GHz asymmetric transmissionen
dc.typeJournal Articleen
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen
dc.description.versionPublished versionen
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