Broadband acoustic lens design using the principle of reciprocity and gradient-based optimization

2020 ◽  
Vol 148 (4) ◽  
pp. 2605-2605
Author(s):  
Feruza Amirkulova ◽  
Samer Gerges ◽  
Andrew N. Norris
Keyword(s):  
Lens Design ◽  
Acoustic Lens ◽  
Gradient Based

2110 STONE FRAGMENTATION USING A NEW ACOUSTIC LENS DESIGN FOR ELECTROMAGNETIC SHOCKWAVE LITHOTRIPTERS IN A SWINE MODEL

2010 ◽  
Vol 183 (4S) ◽  
Author(s):  
John Mancini ◽  
Walter Simmons ◽  
Eliza Raymundo ◽  
Daniel Yong ◽  
Michael Ferrandino ◽  
...  
Keyword(s):  
Swine Model ◽  
Lens Design ◽  
Stone Fragmentation ◽  
Acoustic Lens

Acoustic lens design by genetic algorithms

2004 ◽  
Vol 70 (21) ◽  
Author(s):  
A. Håkansson ◽  
J. Sánchez-Dehesa ◽  
L. Sanchis
Keyword(s):  
Genetic Algorithms ◽  
Lens Design ◽  
Acoustic Lens

1 GHz differential phase acoustic lens design for surface and subsurface applications

2002 ◽  
Author(s):  
H.F. Routh ◽  
E.A. Sivers ◽  
H.L. Bertoni ◽  
B.T. Khuri-Yakub ◽  
D.D. Waters
Keyword(s):  
Lens Design ◽  
Differential Phase ◽  
Acoustic Lens

A new acoustic lens design for electromagnetic shock wave lithotripters.

2010 ◽  
Vol 127 (3) ◽  
pp. 1761-1761
Author(s):  
Nathan Smith ◽  
W. Neal Simmons ◽  
Georgy Sankin ◽  
Pei Zhong
Keyword(s):  
Shock Wave ◽  
Lens Design ◽  
Acoustic Lens ◽  
Electromagnetic Shock ◽  
Electromagnetic Shock Wave ◽  
Shock Wave Lithotripters

scholarly journals The acoustic lens design and in vivo use of a multifunctional catheter combining intracardiac ultrasound imaging and electrophysiology sensing

2008 ◽  
Vol 55 (3) ◽  
pp. 602-618 ◽  
Author(s):  
Douglas N. Stephens ◽  
Kai E. Thomenius ◽  
Aman Mahajan ◽  
Kalyanam Shivkumar ◽  
Kang Kim ◽  
...  
Keyword(s):  
Ultrasound Imaging ◽  
Lens Design ◽  
Acoustic Lens ◽  
Intracardiac Ultrasound

Multi-acoustic lens design methodology for a low cost C-scan photoacoustic imaging camera

2016 ◽  
Author(s):  
Bhargava Chinni ◽  
Zichao Han ◽  
Nicholas Brown ◽  
Pedro Vallejo ◽  
Tess Jacobs ◽  
...  
Keyword(s):  
Design Methodology ◽  
Photoacoustic Imaging ◽  
Low Cost ◽  
Lens Design ◽  
Acoustic Lens ◽  
Imaging Camera

scholarly journals Sound Localization through Multi-Scattering and Gradient-Based Optimization

Mathematics ◽  
2021 ◽  
Vol 9 (22) ◽  
pp. 2862
Author(s):  
Feruza Amirkulova ◽  
Samer Gerges ◽  
Andrew Norris
Keyword(s):  
Sound Localization ◽  
Focal Point ◽  
Incidence Angle ◽  
Analytic Form ◽  
Acoustic Lens ◽  
Gradient Based ◽  
Sound Amplification ◽  
Inverse Designs ◽  
Incident Waves ◽  
Localization Region

A gradient-based optimization (GBO) method is presented for acoustic lens design and sound localization. GBO uses a semi-analytical optimization combined with the principle of acoustic reciprocity. The idea differs from earlier inverse designs that use topology optimization tools and generic algorithms. We first derive a formula for the gradients of the pressure at the focal point with respect to positions of a set of cylindrical scatterers. The analytic form of the gradients enhances modeling capability when combined with optimization algorithms and parallel computing. The GBO algorithm maximizes the sound amplification at the focal point and enhances the sound localization by evaluating pressure derivatives with respect to the cylinder positions and then perturbatively optimizing the position of each cylinder in the lens while incorporating multiple scattering between the cylindrical scatterers. The results of the GBO of the uni- and multi-directional broadband acoustic lens designs are presented including several performance measures for the frequency dependence and the incidence angle. A multi-directional broadband acoustic lens is designed to localize the sound and to focus acoustic incident waves received from multiple directions onto a predetermined localization region or focal point. The method is illustrated for configurations of sound hard and sound soft cylinders as well as clusters of elastic thin shells in water.

Acoustic gradient index lens design using gradient based optimization

2018 ◽  
Vol 143 (3) ◽  
pp. 1948-1948 ◽  
Author(s):  
Feruza Amirkulova ◽  
Samuel T. Caton ◽  
Morgan Schrader ◽  
Trenton J. Gobel ◽  
Andrew Norris
Keyword(s):  
Lens Design ◽  
Gradient Index ◽  
Gradient Based ◽  
Gradient Index Lens
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