Ultrasonically Powered and Controlled Microsystem for Dual-Wavelength Optogenetics With a Multiload Regulation Scheme

Amin Rashidi; Milad Zamani; Tanmay Mondal; Seyedsina Hosseini; Kjeld Laursen; Brian Corbett; Farshad Moradi

doi:10.1109/LSSC.2023.3239601

Ultrasonically Powered and Controlled Microsystem for Dual-Wavelength Optogenetics With a Multiload Regulation Scheme

Amin Rashidi, Milad Zamani, Tanmay Mondal, Seyedsina Hosseini, Kjeld Laursen, Brian Corbett, Farshad Moradi

Department of Electrical and Computer Engineering - Electronics and Photonics

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaper › Letter › peer-review

8 Citations (Scopus)

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 μ 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 600 μA , 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 mm2 and 0.572 mm3 , respectively

Original language	English
Journal	IEEE Solid-State Circuits Letters
Volume	6
Pages (from-to)	33-36
Number of pages	4
DOIs	https://doi.org/10.1109/LSSC.2023.3239601
Publication status	Published - Jan 2023

Keywords

Aperture efficiency
dual-wavelength optogenetics
dust
load regulator
piezoelectric
ultrasonic power transfer

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10.1109/LSSC.2023.3239601

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title = "Ultrasonically Powered and Controlled Microsystem for Dual-Wavelength Optogenetics With a Multiload Regulation Scheme",

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 μ 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{\textquoteright}s surface, the rectified voltage, and the total current load of the system are regulated to 2.79 V and 600 μA , 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 mm2 and 0.572 mm3 , respectively",

keywords = "Aperture efficiency, dual-wavelength optogenetics, dust, load regulator, piezoelectric, ultrasonic power transfer",

author = "Amin Rashidi and Milad Zamani and Tanmay Mondal and Seyedsina Hosseini and Kjeld Laursen and Brian Corbett and Farshad Moradi",

year = "2023",

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doi = "10.1109/LSSC.2023.3239601",

language = "English",

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pages = "33--36",

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T1 - Ultrasonically Powered and Controlled Microsystem for Dual-Wavelength Optogenetics With a Multiload Regulation Scheme

AU - Rashidi, Amin

AU - Zamani, Milad

AU - Mondal, Tanmay

AU - Hosseini, Seyedsina

AU - Laursen, Kjeld

AU - Corbett, Brian

AU - Moradi, Farshad

PY - 2023/1

Y1 - 2023/1

N2 - 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 μ 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 600 μA , 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 mm2 and 0.572 mm3 , respectively

AB - 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 μ 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 600 μA , 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 mm2 and 0.572 mm3 , respectively

KW - Aperture efficiency

KW - dual-wavelength optogenetics

KW - dust

KW - load regulator

KW - piezoelectric

KW - ultrasonic power transfer

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U2 - 10.1109/LSSC.2023.3239601

DO - 10.1109/LSSC.2023.3239601

M3 - Letter

VL - 6

SP - 33

EP - 36

JO - IEEE Solid-State Circuits Letters

JF - IEEE Solid-State Circuits Letters

ER -

Ultrasonically Powered and Controlled Microsystem for Dual-Wavelength Optogenetics With a Multiload Regulation Scheme

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Keywords

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