摘要
We present a conformal metamaterial with simultaneous optical transparency and broadband millimeter-wave absorption for a curved surface. By tailoring the reflection response of meta-atoms at oblique angles, it is possible to achieve excellent absorption performance from 26.5 to 40.0 GHz within a wide angular range from 0° to 60°for transverse-electric and transverse-magnetic waves. In the meantime, by employing transparent substrates,including polyvinyl chloride and polyethylene terephthalate, good optical transmittance(80.1%) and flexibility are obtained simultaneously. The reflectivity of a curved metallic surface coated with the proposed curved metamaterial is simulated and measured experimentally. Both results demonstrate excellent absorption performance of the metamaterial, which is highly favored for practical applications.
We present a conformal metamaterial with simultaneous optical transparency and broadband millimeter-wave absorption for a curved surface. By tailoring the reflection response of meta-atoms at oblique angles, it is possible to achieve excellent absorption performance from 26.5 to 40.0 GHz within a wide angular range from 0° to 60°for transverse-electric and transverse-magnetic waves. In the meantime, by employing transparent substrates,including polyvinyl chloride and polyethylene terephthalate, good optical transmittance(80.1%) and flexibility are obtained simultaneously. The reflectivity of a curved metallic surface coated with the proposed curved metamaterial is simulated and measured experimentally. Both results demonstrate excellent absorption performance of the metamaterial, which is highly favored for practical applications.
基金
National Key Research and Development Program of China(2017YFA0700201,2017YFA0700202,2017YFA0700203)
National Natural Science Foundation of China(NSFC)(11227904,61138001,61371035,61501112,61501117,61522106,61571117,61631007,61701107,61701108,61722106,61731010)
111 Project(111-2-05)
Natural Science Foundation of Jiangsu Province(BK20150020)
Fundamental Research Funds for the Central Universities(KYCX17_0091)
Postgraduate Research&Practice Innovation Program of Jiangsu Province(KYCX17_0091)
Scientific Research Foundation of Graduate School of Southeast University(YBJJ1812)
