scholarly journals Hyperbolic metamaterial as super absorber for scattered fields generated at its surface

2012 ◽  
Vol 86 (20) ◽  
Author(s):  
Caner Guclu ◽  
Salvatore Campione ◽  
Filippo Capolino
Keyword(s):  
Hyperbolic Metamaterial ◽  
Super Absorber ◽  
Scattered Fields

scholarly journals Silicon based mid-IR super absorber using hyperbolic metamaterial

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Mai Desouky ◽  
Ahmed M. Mahmoud ◽  
Mohamed A. Swillam
Keyword(s):  
Hyperbolic Metamaterial ◽  
Super Absorber ◽  
Silicon Based

MEASUREMENTS ON ELECTROMAGNETIC SCATTERED FIELDS OF SOME RF AND MICROWAVE EQUIPMENTS

2017 ◽  
Vol 16 (10) ◽  
pp. 2371-2380
Author(s):  
Sorin-Bogdan Balmus ◽  
Dumitru D. Sandu ◽  
Paul Gasner ◽  
Sorin Dobrea
Keyword(s):  
Scattered Fields

scholarly journals Ultrasonic Scattered Field Distribution of One and Two Cylindrical Solids with Phased Array Technique

2019 ◽  
Vol 32 (1) ◽  
Author(s):  
Xiaozhou Liu ◽  
Jian Ma ◽  
Haibin Wang ◽  
Sha Gao ◽  
Yifeng Li ◽  
...  
Keyword(s):  
Plane Wave ◽  
Field Distribution ◽  
Scattered Field ◽  
Phased Array ◽  
Simulation Analysis ◽  
Plane Waves ◽  
Theoretical Solution ◽  
Steel Matrix ◽  
Field Distributions ◽  
Scattered Fields

AbstractThe scattered fields of plane waves in a solid from a cylinder or sphere are critical in determining its acoustic characteristics as well as in engineering applications. This paper investigates the scattered field distributions of different incident waves created by elastic cylinders embedded in an elastic isotropic medium. Scattered waves, including longitudinal and transverse waves both inside and outside the cylinder, are described with specific modalities under an incident plane wave. A model with a scatterer embedded in a structural steel matrix and filled with aluminum is developed for comparison with the theoretical solution. The frequency of the plane wave ranged from 235 kHz to 2348 kHz, which corresponds to scaling factors from 0.5 to 5. Scattered field distributions in matrix materials blocked by an elastic cylindrical solid have been obtained by simulation or calculated using existing parameters. The simulation results are in good agreement with the theoretical solution, which supports the correctness of the simulation analysis. Furthermore, ultrasonic phased arrays are used to study scattered fields by changing the characteristics of the incident wave. On this foundation, a partial preliminary study of the scattered field distribution of double cylinders in a solid has been carried out, and the scattered field distribution at a given distance has been found to exhibit particular behaviors at different moments. Further studies on directivities and scattered fields are expected to improve the quantification of scattered images in isotropic solid materials by the phased array technique.

Analytic solutions of the scattering by two multilayered dielectric spheres

1992 ◽  
Vol 70 (9) ◽  
pp. 696-705 ◽  
Author(s):  
A-K. Hamid ◽  
I. R. Ciric ◽  
M. Hamid
Keyword(s):  
Boundary Conditions ◽  
Cross Sections ◽  
Plane Electromagnetic Wave ◽  
Expansion Method ◽  
Analytic Solutions ◽  
Addition Theorem ◽  
Modal Expansion ◽  
Modal Expansion Method ◽  
Dielectric Spheres ◽  
Scattered Fields

The problem of plane electromagnetic wave scattering by two concentrically layered dielectric spheres is investigated analytically using the modal expansion method. Two different solutions to this problem are obtained. In the first solution the boundary conditions are satisfied simultaneously at all spherical interfaces, while in the second solution an iterative approach is used and the boundary conditions are satisfied successively for each iteration. To impose the boundary conditions at the outer surface of the spheres, the translation addition theorem of the spherical vector wave functions is employed to express the scattered fields by one sphere in the coordiante system of the other sphere. Numerical results for the bistatic and back-scattering cross sections are presented graphically for various sphere sizes, layer thicknesses and permittivities, and angles of incidence.

Mid-infrared biosensors with grating coupled graphene based hyperbolic metamaterial

2021 ◽  
Author(s):  
Sarah Cynthia ◽  
Rajib Ahmed ◽  
Sharnali Islam ◽  
Khaleda Ali ◽  
Mainul Hossain
Keyword(s):  
Mid Infrared ◽  
Hyperbolic Metamaterial
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