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Metasurfaces can reshape the wavefront in the desired manner by manipulating the phase profile and amplitude of the incident wave. In this paper, we demonstrate an ultrathin terahertz metalens based on our designed resonator structure, where the polarization state can be converted to the orthogonal direction and the parabolic phase profile is designed covering a 2 phase region. Many functional metalenses are also engineered to meet the demand of focusing, dual-polarization confocal, and dual focuses for orthogonal polarization in the frequency range from 0.65 to 0.8 THz. The presented metalenses can provide potential applications in terahertz communications and imaging systems.

Optical and magnetic responsive deforming multilayered films with rapid deforming recovery property were successfully fabricated by electrospinning technology. Polyvinyl alcohol (PVA)/liquid crystal (LC) 5CB (4‐cyano‐4'pentylbiphenyl)/graphite fiber film was orderly collected on the thermoplastic polyurethanes (TPU) substrate film by parallel electrode electrospinning method. Graphite and nano‐magnetic particles had been added to endue it with optical and magnetic responsibility. Evaluated by a customized 3D‐printed platform, the deforming multilayered film shows its high deforming recovery speed. Therefore, the proposed deforming multilayered films can be applied in the field of bionic control with the advantage of rapid optical and magnetic responsibility, nontoxicity, and simple fabrication approach. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46884.