S-MRUT: Sectored-Multi Ring Ultrasonic Transducer for selective powering of brain implants
| dc.contributor.author | Hosseini, Seyedsina | |
| dc.contributor.author | Laursen, Kjeld | |
| dc.contributor.author | Rashidi, Amin | |
| dc.contributor.author | Mondal, Tanmay | |
| dc.contributor.author | Corbett, Brian | |
| dc.contributor.author | Moradi, Farshad | |
| dc.contributor.funder | Horizon 2020 | en |
| dc.date.accessioned | 2020-09-10T10:29:17Z | |
| dc.date.available | 2020-09-10T10:29:17Z | |
| dc.date.issued | 2020-06-09 | |
| dc.date.updated | 2020-09-10T10:17:18Z | |
| dc.description.abstract | One of the main challenges of the current ultrasonic transducers for powering brain implants is the complexity of focusing ultrasonic waves in various axial and lateral directions. The available transducers usually use electrically controlled phased array for beamforming the ultrasonic waves, which increases the complexity of the system even further. In this paper, we propose a straightforward solution for selective powering of brain implants to remove the complexity of conventional phased arrays. Our approach features a Sectored-Multi Ring Ultrasonic Transducer (S-MRUT) on a single piezoelectric sheet, specifically designed for powering implantable devices for optogenetics in freely moving animals. The proposed uni-directional S-MRUT is capable of focusing the ultrasonic waves on brain implants located at different depths and regions of the brain. The S-MRUT is designed based on Fresnel Zone Plate (FZP) theory, simulated in COMSOL, and fabricated with microfabrication process. The acoustic profile of the seven different configurations of the SMRUT were measured using a hydrophone with the total number of 7436 grid points. The measurements show the ability of the proposed S-MRUT to sweep the focus point of the acoustic waves in the axial direction in depths of 1 – 3mm, which is suitable for powering implants in the striatum of the mouse. Furthermore, the proposed S-MRUT demonstrates a steering area with the average radius of 0:862mm, and 0:678mm in experiments, and simulations, respectively. The S-MRUT is designed with the size of 3.8 × 3.8 × 0.5mm3 and the weight of 0:054gr, showing that it is compact and light enough to be worn by a mouse. Finally, the S-MRUT was tested in our measurement setup, where it successfully transfers sufficient power to a 2:8mm3 optogentic stimulator to turn on a microLED on the stimulator. | en |
| dc.description.status | Peer reviewed | en |
| dc.description.version | Accepted Version | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.citation | Hosseini, S., Laursen, K., Rashidi, A., Mondal, T., Corbett, B. and Moradi, F. (2020) 'S-MRUT: Sectored-Multi Ring Ultrasonic Transducer for selective powering of brain implants', IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control. doi: 10.1109/TUFFC.2020.3001084 | en |
| dc.identifier.doi | 10.1109/TUFFC.2020.3001084 | en |
| dc.identifier.issn | 0885-3010 | |
| dc.identifier.issn | 1525-8955 | |
| dc.identifier.journaltitle | IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control | en |
| dc.identifier.uri | https://hdl.handle.net/10468/10501 | |
| dc.language.iso | en | en |
| dc.publisher | Institute of Electrical and Electronics Engineers (IEEE) | en |
| dc.relation.project | info:eu-repo/grantAgreement/EC/H2020::RIA/767092/EU/in vivo optogeneticS, elecTrophysiology and phArmacology with an ultRasonically-powered DUST for Parkinson's Disease/STARDUST | en |
| dc.rights | © 2020, IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | en |
| dc.subject | Acoustic transducer | en |
| dc.subject | Acoustics | en |
| dc.subject | Brain implant | en |
| dc.subject | Electrodes | en |
| dc.subject | Mice | en |
| dc.subject | Neural implants | en |
| dc.subject | Optogenetics | en |
| dc.subject | Transducers | en |
| dc.subject | Ultrasonic transducers | en |
| dc.subject | Uni-directional transducer | en |
| dc.title | S-MRUT: Sectored-Multi Ring Ultrasonic Transducer for selective powering of brain implants | en |
| dc.type | Article (peer-reviewed) | en |
