Abstract
Passive acoustic structures can be used to engineer wavefronts in many practical applications. By tuning its topology, the local refraction, scattering or inner resonances can be tailored for a particular functionality. We report the use of metasurfaces to synthesize wavefronts by tuning subwavelength 3D-printed elastic resonators for ultrasonic frequencies. These structures are shown to be remarkably flexible for spatially-coding arbitrary phase-conjugated fields corresponding to the ones used for selected biomedical ultrasound applications. In this way, by tuning the hologram inner structure, we can synthesize high-intensity acoustic images with unprecedent resolution, which are currently being applied to focus therapeutic ultrasound beams and treat several diseases in a non-invasive, non-ionizing, localized and low-cost manner.
BibTeX citation
@inproceedings{MWSW04Jimenez2023,
author = {Noé Jiménez},
booktitle = {MWSW04: Multiple scattering in engineering and applied sciences. Cambridge, UK. 22 - 26 May},
doi = {https://www.newton.ac.uk/seminar/38824/},
editor = {Proceedings of the MWSW04},
isbn = {ISBN: 978-84-87985-30-4},
month = {04},
organization = {University of Cambridge},
pages = {1},
publisher = {Isaac Newton Institute for Mathematical Sciences},
series = {Oral},
title = {Metamaterials for therapeutic ultrasound applications},
url = {https://www.newton.ac.uk/event/mwsw04/},
year = {2023}
}