Bridging the'Last Millimeter' Gap of Brain-Machine Interfaces via Near-Infrared Wireless Power Transfer and Data Communications
Autor: | Hun-Seok Kim, Eunseong Moon, Taekwang Jang, Joseph T. Costello, David Blaauw, Cynthia A. Chestek, Jongyup Lim, Jamie Phillips, Michael Barrow, Samuel R. Nason, Jungho Lee |
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Rok vydání: | 2021 |
Předmět: |
business.industry
Computer science Optical link Electrical engineering Optical power 02 engineering and technology Neural engineering Integrated circuit 021001 nanoscience & nanotechnology 01 natural sciences Signal Atomic and Molecular Physics and Optics Article Electronic Optical and Magnetic Materials law.invention 010309 optics CMOS law 0103 physical sciences Wireless Wireless power transfer Electrical and Electronic Engineering 0210 nano-technology business Biotechnology |
Zdroj: | ACS Photonics |
ISSN: | 2330-4022 |
Popis: | Arrays of floating neural sensors with high channel count that cover an area of square centimeters and larger would be transformative for neural engineering and brain-machine interfaces. Meeting the power and wireless data communications requirements within the size constraints for each neural sensor has been elusive due to the need to incorporate sensing, computing, communications, and power functionality in a package of approximately 100 micrometers on a side. In this work, we demonstrate a near infrared optical power and data communication link for a neural recording system that satisfies size requirements to achieve dense arrays and power requirements to prevent tissue heating. The optical link is demonstrated using an integrated optoelectronic device consisting of a tandem photovoltaic cell and microscale light emitting diode. End-to-end functionality of a wireless neural link within system constraints is demonstrated using a pre-recorded neural signal between a self-powered CMOS integrated circuit and single photon avalanche photodiode. |
Databáze: | OpenAIRE |
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