All-dielectric ultrathin conformal metasurfaces: lensing and cloaking applications at 532 nm wavelength.
All-dielectric ultrathin conformal metasurfaces: lensing and cloaking applications at 532 nm wavelength.
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DOI:
10.1038/srep38440
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发表时间:
2016-12-08
影响因子:
4.6
通讯作者:
Mosallaei H
中科院分区:
文献类型:
--
作者:
Cheng J;Jafar-Zanjani S;Mosallaei H
Metasurfaces are ideal candidates for conformal wave manipulation on curved objects due to their low profiles and rich functionalities. Here we design and analyze conformal metasurfaces for practical optical applications at 532 nm visible band for the first time. The inclusions are silicon disk nanoantennas embedded in a flexible supporting layer of polydimethylsiloxane (PDMS). They behave as local phase controllers in subwavelength dimensions for successful modification of electromagnetic responses point by point, with merits of high efficiency, at visible regime, ultrathin films, good tolerance to the incidence angle and the grid stretching due to the curvy substrate. An efficient modeling technique based on field equivalence principle is systematically proposed for characterizing metasurfaces with huge arrays of nanoantennas oriented in a conformal manner. Utilizing the robust nanoantenna inclusions and benefiting from the powerful analyzing tool, we successfully demonstrate the superior performances of the conformal metasurfaces in two specific areas, with one for lensing and compensation of spherical aberration, and the other carpet cloak, both at 532 nm visible spectrum.
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影响因子:
4.6
作者:
Li X;Wei L;Poelma RH;Vollebregt S;Wei J;Urbach HP;Sarro PM;Zhang GQ
通讯作者:
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影响因子:
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通讯作者:
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通讯作者:
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