Wafer-Scale Graphene-Based Soft Electrode Array with Optogenetic Compatibility

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Abstract

This paper reports on the characterization of a microfabricated wafer-scale, graphene-based, soft implant for spinal cord applications. Graphene is used because of its high transparency and good conductivity, making it suitable for optogenetic applications. Moreover it has a high mechanical strength and is potentially biocompatible. The implant consists of multi-layered chemical vapor deposited graphene, in the form of electrodes and tracks, encapsulated between 2 layers of silicone. Methods such as Raman spectroscopy, optical transmittance, and electrical measurements combined with bending tests and in-vitro experiments, using phosphate-buffered saline (PBS) solution, were employed to characterize the device. The results have shown high bendability and no critical damage of the graphene after immersing the device in PBS solution up to 7 days. To the authors' best knowledge, this is the first work that presents a soft and fully scalable optogenetics-compatible graphene-based spinal cord electrode array.
Original languageEnglish
Title of host publication33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
Place of PublicationVancouver, Canada
PublisherIEEE Sensors
Pages421-424
Number of pages4
ISBN (Electronic)9781728135809
ISBN (Print)978-1-7281-3581-6
DOIs
Publication statusPublished - 2020
Event33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020 - Vancouver, Canada
Duration: 18 Jan 202022 Jan 2020
Conference number: 33
https://www.mems20.org

Publication series

NameProceedings of the IEEE International Conference on Micro Electro Mechanical Systems (MEMS)
Volume2020-January
ISSN (Print)1084-6999

Conference

Conference33rd IEEE International Conference on Micro Electro Mechanical Systems, MEMS 2020
Abbreviated titleMEMS 2020
CountryCanada
CityVancouver
Period18/01/2022/01/20
Internet address

Keywords

  • Wafer-scale implant
  • graphene
  • optogenetic compatibility
  • silicone

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