Abstract
Optical holograms can modulate light wavefronts to generate visible images. In the same way, acoustic images can also be synthesized by holograms, shaping the areas where mechanical waves present a high amplitude, and areas where the media is at rest. In recent years, acoustic holograms have been exhaustively studied, mainly triggered by the emergence of 3D printing technologies. Artificially structured materials have enabled accurate wavefront engineering for many applications such as particle trapping and manipulation, scattering control and vortex generation, fast 3D-printing, volumetric displays, or 3D imaging. Acoustic holograms have found recent application in biomedical applications, in particular in emerging therapeutic applications of focused ultrasound. Compared to light, acoustic waves can penetrate deeper into biological tissues. Therefore, acoustic holograms are bursting onto current biomedical applications due to their capability to shape and focus ultrasound fields inside biological media. These engineered materials can encode complex wavefronts to compensate the phase aberrations produced by stiff layers of tissues, such as skull bones in transcranial propagation, enabling the creation of arbitrary therapeutic patterns in the brain or even vortex beams.
BibTeX citation
@inproceedings{JimenezEuromech2022,
author = {Noé Jiménez and Diana Andrés and Sergio Jiménez-Gambín and Antonios N. Pouliopoulos and José M. Benlloch and Jonathan Vappou and Elisa E. Konofagou and Alicia Carrión-García and Francisco Camarena},
booktitle = {EUROMECH Colloquium 610. Emerging topics in acoustic and mechanical metamaterials. Benicassim, Spain. 25-27 April},
doi = {https://euromech.org/colloquia/2021/610},
editor = {Conference proceedings},
month = {4},
organization = {European Mechanics Society},
pages = {79-80},
series = {Invited},
title = {Shaping therapeutical acoustic images using acoustic holograms},
url = {https://euromech.org/colloquia/2021/610},
year = {2022}
}