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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201907308
|2 doi
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|a DE-627
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|a eng
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|a Akram, Muhammad Rizwan
|e verfasserin
|4 aut
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|a Ultrathin Single Layer Metasurfaces with Ultra-Wideband Operation for Both Transmission and Reflection
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|c 2020
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|a Text
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|a ƒaComputermedien
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|a ƒa Online-Ressource
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Artificially engineered metasurfaces provide extraordinary wave control at the subwavelength scale. However, metasurfaces proposed so far suffer due to limited bandwidths. In this paper, extremely thin metasurfaces made of single metallic layer is experimentally presented for ultra-wideband operation from 9.3 to 32.5 GHz (with a fractional band of 112%), working at both transmission and reflection modes simultaneously. The phase control is achieved by azimuthally rotating the scatterer based on Pancharatnam-Berry phase principle. Nearly uniform efficiency (≈25%), approaching the theoretical limit of the infinitely thin metasurface, is achieved throughout the operation band. Finally, the proposed design is implemented for applications, e.g., the generation of electromagnetic waves carrying orbital angular momentums as well as anomalous reflections and refractions. The metasurfaces are characterized numerically and experimentally and the results are in good agreements
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|a Journal Article
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|a Pancharatnam-Berry phase
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|a cross-polarization
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|a metasurfaces
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|a orbital angular momentum
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|a Ding, Guowen
|e verfasserin
|4 aut
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|a Chen, Ke
|e verfasserin
|4 aut
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|a Feng, Yijun
|e verfasserin
|4 aut
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|a Zhu, Weiren
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 12 vom: 21. März, Seite e1907308
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:32
|g year:2020
|g number:12
|g day:21
|g month:03
|g pages:e1907308
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|u http://dx.doi.org/10.1002/adma.201907308
|3 Volltext
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