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Achromatic focusing effect of metasurface-based binary phase Fresnel zone plate
Physics Letters, Section A: General, Atomic and Solid State Physics, 2021Traditional binary phase Fresnel zone plate (BPFZP) fails to provide a single-layered solution for multi-wavelength achromatic focusing. In this article, by combining metasurfaces and BPFZP model, we propose an ultra-thin single-layered transmissive ...
Junyi Wang, Jiaqi Yang, G. Kang
semanticscholar +3 more sources
Ultrasonic tunable focusing by a stretchable phase-reversal Fresnel zone plate
Applied Physics Letters, 2020This paper reports a stretchable silicone phase-reversal (PR) Fresnel zone plate (FZP) that can focus ultrasonic energy at different focal lengths with a high transmission coefficient in water.
Xiangxiang Xia +5 more
semanticscholar +3 more sources
Applied Physics Letters, 2020
We present a simple and efficient method for generating focused acoustic vortices in air over a wide range of ultrasonic frequencies by means of an Active-Spiral Fresnel Zone Plate.
Ruben D. Muelas-Hurtado +2 more
semanticscholar +3 more sources
We present a simple and efficient method for generating focused acoustic vortices in air over a wide range of ultrasonic frequencies by means of an Active-Spiral Fresnel Zone Plate.
Ruben D. Muelas-Hurtado +2 more
semanticscholar +3 more sources
Ultrasonics, 2022
Acoustic focusing with high energy intensity, broadband and few side lobes properties are highly demanded in many fields and can be achieved with Fresnel zone plate (FZP) lens as an artificial structure.
Xiaojiang J. Pan +4 more
semanticscholar +1 more source
Acoustic focusing with high energy intensity, broadband and few side lobes properties are highly demanded in many fields and can be achieved with Fresnel zone plate (FZP) lens as an artificial structure.
Xiaojiang J. Pan +4 more
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation, 2021
This article presents an aperture-shared dual-band large frequency-ratio high gain antenna for sub-6 GHz and millimeter-wave (mm-wave) bands applications. Initially, the partially reflective surface (PRS) of the Fabry–Pérot cavity (FPC) antenna operating
Jianfeng Zhu, Yang Yang, S. Liao, Q. Xue
semanticscholar +1 more source
This article presents an aperture-shared dual-band large frequency-ratio high gain antenna for sub-6 GHz and millimeter-wave (mm-wave) bands applications. Initially, the partially reflective surface (PRS) of the Fabry–Pérot cavity (FPC) antenna operating
Jianfeng Zhu, Yang Yang, S. Liao, Q. Xue
semanticscholar +1 more source
Study of focusing parameters of wavelength-scale binary phase Fresnel zone plate
Journal of Optics, 2021Binary Fresnel zone plates (FZP) are among the most commonly used focusing elements of 2D-planar optical circuits in micro- and nano-photonics. When the diameter and focal distance of a FZP are reduced to the wavelength dimensions, the parameters of the ...
Yuri E. Geints +3 more
semanticscholar +1 more source
, 2021
Accurate measurement of the contact stress on the mating surface of the core engine's multi-stage rotor is of great significance for improving the structural connection quality and comprehensive performance of aero-engines.
Enxiao Liu +6 more
semanticscholar +1 more source
Accurate measurement of the contact stress on the mating surface of the core engine's multi-stage rotor is of great significance for improving the structural connection quality and comprehensive performance of aero-engines.
Enxiao Liu +6 more
semanticscholar +1 more source
Gold filled in Fresnel zone plate fabricated by femtosecond laser on fiber tip
Optical fiber technology (Print), 2021We present a method to fabricate Fresnel zone plate (FZP) on the multimode fiber (MMF) tip by combining femtosecond laser direct writing with coating, polishing and chemical etching.
Cong Xu +5 more
semanticscholar +1 more source
Implementation of a 2-D Reconfigurable Fresnel-Zone-Plate Antenna
IEEE Transactions on Antennas and Propagation, 2021Combining the advantages of the phase tunability provided by active frequency selective surfaces (FSSs) and the beam-steering scheme used in conventional 1-D Fresnel-zone-plate (FZP) antennas, we report in this communication a 2-D beam-steering FZP ...
Chao Ma +8 more
semanticscholar +1 more source