Results 21 to 30 of about 556,769 (269)
Manipulation of wavefront using helical metamaterials
Optics Express, 2016 Helical metamaterials, a kind of 3-dimensional structure, has relatively strong coupling effect among the helical nano-wires. Therefore, it is expected to be a good candidate for generating phase shift and controlling wavefront with high efficiency.
Zhenyu Yang +3 more
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Realization of Terahertz Wavefront Manipulation Using Transmission-Type Dielectric Metasurfaces [PDF]
Frontiers in Physics, 2020 Metasurfaces, composed of an array of subwavelength artificial structures, have attracted great interest, owing to their high ability in locally manipulating the wavefront of electromagnetic waves.
Jiaqi Li +5 more
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Independent wavefront manipulation based on multifunctional terahertz metasurface
AIP AdvancesIn this paper, a full-space metasurface is designed to control the transmitted circularly polarized waves and reflected linearly polarized waves independently at two different terahertz frequencies. The proposed metasurface unit consists of two layers of
Xinyu Liu, Jiajun Liang, Xiangsuo Fan
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Acoustic Wavefront Manipulation: Impedance Inhomogeneity and Extraordinary Reflection [PDF]
arXiv, 2013 Optical wavefront can be manipulated by interfering elementary beams with phase inhomogeneity. Therefore a surface allowing huge, abrupt and position-variant phase change would enable all possibilities of wavefront engineering. However, one may not have the luxury of efficient abrupt-phase-changing materials in acoustics. This motivates us to establish
Jiajun Zhao +3 more
arxiv +3 more sources
Wavefront manipulation by acoustic metasurfaces: from physics and applications [PDF]
Nanophotonics, 2018 Molding the wavefront of acoustic waves into the desired shape is of paramount significance in acoustics, which however are usually constrained by the acoustical response of naturally available materials.
Liang Bin +2 more
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All-metallic geometric metasurfaces for broadband and high-efficiency wavefront manipulation [PDF]
Nanophotonics, 2019 Geometric metasurfaces have shown superior phase control capacity owing to the geometric nature of their phase profile. The existing geometric metasurfaces are generally composed of metal-dielectric composites or all-dielectric subwavelength structures ...
Xie Xin +7 more
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Scatterings and wavefront manipulations of surface plasmon polaritons
Acta Physica Sinica, 2020 Surface plasmon polaritons (SPPs) have found many important applications in on-chip signal transportation, enhanced nonlinear/Raman effect, biological/chemical sensing, super resolution imaging, etc. In these applications, the near-field propagation and far-field scattering of SPPs play a vital role.
Fuxin Guan +5 more
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Switchable Polarization Selective Terahertz Wavefront Manipulation in a Graphene Metasurface [PDF]
IEEE Photonics Journal, 2019 We propose a graphene-based metasurface to investigate the function of switchable polarization selective wave manipulation in THz regime by using the finite-difference time-domain method. The proposed metasurface consists of two layers of graphene arrays,
Yuhui Zhang +4 more
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A Gaussian reflective metasurface for advanced wavefront manipulation
Optics Express, 2019 Metasurfaces enable us to control the fundamental properties of light with unprecedented flexibility. However, most metasurfaces realized to date aim at modifying plane waves. While the manipulation of nonplanar wavefronts is encountered in a diverse number of applications, their control using metasurfaces is still in its infancy.
Jade Martínez-Llinàs +5 more
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IEEE Photonics Journal, 2023 In this article, we introduced an ultra-thin broadband single-layer metasurface (MS) comprising an S-shaped resonator (SSR) structure enclosed by a circular cover adhered on a dielectric substrate.
Bingzhen Li +7 more
doaj +2 more sources