Bridging the “Last Millimeter” Gap of Brain-Machine Interfaces via Near-Infrared Wireless Power Transfer and Data Communications

• DOI: 10.1021/acsphotonics.1c00160
• Publication Date: 2021-04-21T21:43:11Z
• Authors: Eunseong Moon; Michael Barrow; Jongyup Lim; Jungho Lee; Samuel R. Nason; Joseph Costello; Hun Seok Kim; Cynthia Chestek; Taekwang Jang; David Blaauw; Jamie D. Phillips
• Keywords: Photodiode

Arrays of floating neural sensors with high channel count that cover an area square centimeters and larger would be transformative for engineering brain-machine interfaces. Meeting the power wireless data communications requirements within size constraints each sensor has been elusive due to need incorporate sensing, computing, communications, functionality in a package approximately 100 micrometers on side. In this work, we demonstrate near infrared optical communication link recording system satisfies achieve dense arrays prevent tissue heating. The is demonstrated using integrated optoelectronic device consisting tandem photovoltaic cell microscale light emitting diode. End-to-end pre-recorded signal between self-powered CMOS circuit single photon avalanche photodiode.