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Design of Acoustic Bifocal Lenses Using a Fourier-Based Algorithm

Fuster Escuder, José Miguel; Pérez-López, Sergio; Candelas Valiente, Pilar (MDPI AG, 2021-12)

[EN] In this work, we develop a new design method based on fast Fourier transform (FFT) for implementing zone plates (ZPs) with bifocal focusing profiles. We show that the FFT of the governing binary sequence provides a ...
Fractal lenses based on Cantor binary sequences for ultrasound focusing applications

Pérez-López, Sergio; Fuster Escuder, José Miguel; Candelas Valiente, Pilar; Rubio Michavila, Constanza (Elsevier, 2019)

[EN] In this work, we demonstrate the application of Cantor fractal lenses in acoustics. The Cantor Zone Plate (CZP), previously introduced in optics, is designed from a conventional Fresnel Zone Plate (FZP) using a binary ...
On the Design of Soret Zone Plates based on Binary Sequences using Directional Transducers

Candelas Valiente, Pilar; Pérez-López, Sergio; Fuster Escuder, José Miguel (MDPI AG, 2021-09)

[EN] In this work, we analyze the effect of the distribution of transparent Fresnel regions over the focusing profile of Soret Zone Plates (SZP) based on binary sequences. It is shown that this effect becomes very significant ...

Mostrando ítems 1-3 de 3