Journal
ADVANCED MATERIALS
Volume 27, Issue 7, Pages 1195-1200Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201405047
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Funding
- National Natural Science Foundation of China [61401122, 61371044]
- National University of Singapore [R-263-000-688-112]
- AFOSR [FA9550-13-1-0204]
- Welch Foundation [F-1802]
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Novel ultrathin dual-functional meta lenses are proposed, fabricated, tested, and verified in the microwave regime for the first time. The significance is that their anomalous transmission efficiency almost reaches the theoretical limit of 25%, showing a remarkable improvement compared with earlier ultrathin metasurface designs with less than 5% coupling efficiency. The planar metalens proposed empowers significant reduction in thickness, versatile focusing behavior, and high transmission efficiency simultaneously.
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