Bridging the “last millimeter” gap of brain-machine interfaces via near-infrared wireless power transfer and data communications
Open accessAbstract
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.
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A self-powered mote with NIR wireless power and data transfer was designed and showed promising results in a simulated brain environment.
“In a study incorporating a self-powered mote with NIR wireless power and data transfer, an implant showing promising results in a simulated brain environment is designed (Moon et al., 2021).”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Moon et al., 2021
The Introduction and Self-Powered NIR Neural Link sections report a self-powered circuit and a successful NIR power-and-data link tested with components placed side by side in a setup that mimicked the proposed link. The Conclusion and Future Implementation section says substantial work remains to assemble and package neural motes, so the paper does not show a completed implant performing in a simulated brain environment. No page numbers are available in our copy. (LLM, conf=0.88)
Experimental — accuracy not yet measuredThe projected −41.3 dB total losses of an experimental optical link indicate a need for additional improvement.
“The projected −41.3 dB total losses of such an experimental optical link point to the necessity for additional improvement.”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Moon et al., 2021
Power and data may be wirelessly delivered while simulating the link conditions between the mote and receiver.
“This effectively shows that power and data may be wirelessly delivered while simulating the link conditions between the mote and receiver.”
From Comparative analysis of energy transfer mechanisms for neural implants (2024) · cites this paper as Moon et al., 2021
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- Authors
- Moon, E., Barrow, M., Lim, J., Lee, J., Nason, S. R., Costello, J., Kim, H. S., Chestek, C., Jang, T., Blaauw, D., & Phillips, J. D.
- Affiliations
- University of Michigan (US)
- ETH Zurich (CH)
- Corresponding author
- Phillips, Jamie D.
- ORCID
- Venue
- ACS Photonics
- Publisher
- American Chemical Society (ACS)
- Published
- 2021-04-20
- Volume
- 8
- Issue
- 5
- Pages
- 1430-1438
- ISSN
- 2330-4022 (ISSN-L)
- PMC
- PMC8336758
- OpenAlex
- W3156199991
- Semantic Scholar
- 439b289725d6deef6a8e00d0c312b90173d35de0
- Cited by
- 31
- References
- 40
- Citations by year
- 2026: 3 · 2025: 4 · 2024: 5 · 2023: 6 · 2022: 10 · 2021: 3
- FWCI
- 2.77
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Licence
- Locations
- ACS Photonics (publishedVersion)
- PubMed (publishedVersion)
- PubMed Central (acceptedVersion)
- Funders
- National Eye Institute (R21EY02945201)
- National Institute of Child Health and Human Development (F31HD098804)
- Topics
- Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neural Engineering
- Physical Sciences › Engineering › Biomedical Engineering › Wireless Body Area Networks
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Wireless Power Transfer Systems
- Keywords
- brain-computer interface, optoelectronic integrated devices, single-photon avalanche diodes
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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