An all-dielectric metasurface absorber based on surface wave conversion effect

2021 ◽  
Vol 119 (6) ◽  
pp. 062902
Author(s):  
Jingda Wen ◽  
Qiang Ren ◽  
Ruiguang Peng ◽  
Qian Zhao
2018 ◽  
Vol 7 (5) ◽  
pp. 18008-18008 ◽  
Author(s):  
Shuo Liu ◽  
Tie Jun Cui ◽  
Ahsan Noor ◽  
Zui Tao ◽  
Hao Chi Zhang ◽  
...  

2017 ◽  
Vol 10 (2) ◽  
pp. 161-168 ◽  
Author(s):  
Mounir Teniou ◽  
Helene Roussel ◽  
Mohammed Serhir ◽  
Nicolas Capet ◽  
Gerard-Pascal Piau ◽  
...  

This paper presents a procedure for the design of tensorial metasurface antennas radiating polarized beams through aperture field synthesis. The aperture field is generated using the surface wave to leaky wave conversion resulting from metasurface modulation. The design procedure of the feeder is presented with a description of the geometrical parameters affecting the antenna matching. Numerical solutions for single beam and multi-beam metasurface antennas working respectively, at 12.25 and 20 GHz are presented. In addition, a metasurface prototype working at 12.25 GHz is manufactured and measured.


2008 ◽  
Vol 124 (4) ◽  
pp. 2061-2067 ◽  
Author(s):  
André Baillard ◽  
Jeremiah Chiumia ◽  
Dominique Décultot ◽  
Gérard Maze ◽  
Aleksander Klauson ◽  
...  

Author(s):  
W.J. de Ruijter ◽  
M.R. McCartney ◽  
David J. Smith ◽  
J.K. Weiss

Further advances in resolution enhancement of transmission electron microscopes can be expected from digital processing of image data recorded with slow-scan CCD cameras. Image recording with these new cameras is essential because of their high sensitivity, extreme linearity and negligible geometric distortion. Furthermore, digital image acquisition allows for on-line processing which yields virtually immediate reconstruction results. At present, the most promising techniques for exit-surface wave reconstruction are electron holography and the recently proposed focal variation method. The latter method is based on image processing applied to a series of images recorded at equally spaced defocus.Exit-surface wave reconstruction using the focal variation method as proposed by Van Dyck and Op de Beeck proceeds in two stages. First, the complex image wave is retrieved by data extraction from a parabola situated in three-dimensional Fourier space. Then the objective lens spherical aberration, astigmatism and defocus are corrected by simply dividing the image wave by the wave aberration function calculated with the appropriate objective lens aberration coefficients which yields the exit-surface wave.


1989 ◽  
Vol 1 (1) ◽  
pp. 247-265
Author(s):  
Joseph Rose ◽  
Aleksander Pilarski ◽  
Yimei Huang
Keyword(s):  

1990 ◽  
Vol 137 (6) ◽  
pp. 467 ◽  
Author(s):  
M. Kirci ◽  
E. Akcakaya
Keyword(s):  

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