Print Email Facebook Twitter Ultrasonically Powered and Controlled Microsystem for Dual-Wavelength Optogenetics with a Multi-Load Regulation Scheme Title Ultrasonically Powered and Controlled Microsystem for Dual-Wavelength Optogenetics with a Multi-Load Regulation Scheme Author Rashidi, A. (TU Delft Bio-Electronics) Zamani, M. (TU Delft Bio-Electronics; Aarhus University) Mondal, Tanmay (Tyndall National Institute) Hosseini, Seyedsina (Technical University of Denmark) Laursen, Kjeld (Aarhus University) Corbet, Brian (Tyndall National Institute) Moradi, Farshad (Aarhus University) Date 2023 Abstract This letter presents an ultrasonically powered dual-wavelength optogenetic device that targets simultaneous excitation and inhibition of neural activities, or in a broader sense, optical stimulation in two distinct wavelengths for targeting different populations of neurons. This can be applied to a variety of neurological disorders. The device features a load regulator circuit that shares the available power budget between two LEDs in a power-efficient and controlled way suppressing the need for adaptive matching and overvoltage protection circuits. Furthermore, the regulator circuit is capable of detecting power burst availability on the device and generating a control signal, accordingly. For 5.25 -mW acoustic power at the device's surface, the rectified voltage, and the total current load of the system are regulated to 2.79 V and 600A , respectively. The maximum chip and device efficiencies of 92.5% and 31.8% are measured, respectively. The total die area in 180- nm CMOS technology nose and the estimated system volume are 0.16/2 and 0.572/3 , respectively. Subject AcousticsAperture efficiencydual-wavelength optogeneticsdustload regulatorOptogeneticsOscilloscopespiezoelectricRegulatorsSonar equipmentTransducersUltrasonic power transferVoltage control To reference this document use: http://resolver.tudelft.nl/uuid:acd71cf8-09d6-4b00-bcea-a09117aa811c DOI https://doi.org/10.1109/LSSC.2023.3239601 Embargo date 2023-07-01 ISSN 2573-9603 Source IEEE Solid State Circuits Letters, 6, 33-36 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 A. Rashidi, M. Zamani, Tanmay Mondal, Seyedsina Hosseini, Kjeld Laursen, Brian Corbet, Farshad Moradi Files PDF Ultrasonically_Powered_an ... Scheme.pdf 2.25 MB Close viewer /islandora/object/uuid:acd71cf8-09d6-4b00-bcea-a09117aa811c/datastream/OBJ/view