Thin Fresnel zone plate lenses for focusing underwater sound

2015 ◽  
Vol 107 (1) ◽  
pp. 014103 ◽  
Author(s):  
David C. Calvo ◽  
Abel L. Thangawng ◽  
Michael Nicholas ◽  
Christopher N. Layman
Keyword(s):  
Fresnel Zone ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Underwater Sound ◽  
Fresnel Zone Plate Lenses

scholarly journals Bifocal Ultrasound Focusing Using Bi-Fresnel Zone Plate Lenses

Sensors ◽  
2020 ◽  
Vol 20 (3) ◽  
pp. 705 ◽  
Author(s):  
Sergio Pérez-López ◽  
José Miguel Fuster ◽  
Pilar Candelas ◽  
Daniel Tarrazó-Serrano ◽  
Sergio Castiñeira-Ibáñez ◽  
...  
Keyword(s):  
Control Parameter ◽  
Fresnel Zone ◽  
Dynamic Control ◽  
Limited Range ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
The Finite Element Method ◽  
Fem Simulations ◽  
Fresnel Zone Plate Lenses ◽  
Good Agreement

In this work, we present a bifocal Fresnel zone plate (BiFZP) capable of generating focusing profiles with two different foci. The performance of the BiFZP is demonstrated in the ultrasound domain, with a very good agreement between the experimental measurements and the finite element method (FEM) simulations. This lens becomes an appealing alternative to other dual-focusing lenses, in which the foci location can only be set at a limited range of positions, such as M-bonacci zone plates. Moreover, the variation of the operating frequency has also been analyzed, providing an additional dynamic control parameter in this type of lenses.

scholarly journals MILLIMETER-WAVE OFFSET FRESNEL ZONE PLATE LENSES CHARACTERIZATION

2014 ◽  
Vol 54 ◽  
pp. 125-131 ◽  
Author(s):  
German Leon ◽  
Luis F. Herran ◽  
Max O. Munoz ◽  
Fernando Las-Heras ◽  
Yang Hao
Keyword(s):  
Millimeter Wave ◽  
Fresnel Zone ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Fresnel Zone Plate Lenses

Improved zoning rule for designing square Fresnel zone plate lenses

2006 ◽  
Vol 49 (2) ◽  
pp. 276-278 ◽  
Author(s):  
I. V. Minin ◽  
O. V. Minin ◽  
A. Petosa ◽  
S. Thirakoune
Keyword(s):  
Fresnel Zone ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Fresnel Zone Plate Lenses

Scalar FDTD Analysis of Fresnel Zone-Plate Lenses

2006 ◽  
Vol 27 (1) ◽  
Author(s):  
Keh-Yi Lee ◽  
Ming-Huei Shyu ◽  
Jia-Bao Huang ◽  
Shin-Shong Jeng ◽  
Juinn-Shien Lo ◽  
...  
Keyword(s):  
Fresnel Zone ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Fresnel Zone Plate Lenses

scholarly journals Graphene nanoribbon based plasmonic Fresnel zone plate lenses

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16594-16601 ◽  
Author(s):  
Sunan Deng ◽  
Haider Butt ◽  
Kyle Jiang ◽  
Bruno Dlubak ◽  
Piran R. Kidambi ◽  
...  
Keyword(s):  
Fresnel Zone ◽  
Graphene Nanoribbon ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Fresnel Zone Plate Lenses

A graphene-based metamaterial lens is theoretically proposed by combining plasmonic nanoribbons with Fresnel Zone Plate (FZP) architecture to realize wavelength-selective and tunable lensing.

scholarly journals Acoustic Focusing Enhancement In Fresnel Zone Plate Lenses

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Daniel Tarrazó-Serrano ◽  
Sergio Pérez-López ◽  
Pilar Candelas ◽  
Antonio Uris ◽  
Constanza Rubio
Keyword(s):  
Fresnel Zone ◽  
Zone Plate ◽  
Fresnel Zone Plate ◽  
Acoustic Focusing ◽  
Fresnel Zone Plate Lenses
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