Towards a Microfabricated Flexible Graphene-Based Active Implant for Tissue Monitoring During Optogenetic Spinal Cord Stimulation

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Abstract

Our aim is to develop a smart neural interface with transparent electrodes to allow for electrical monitoring of the site of interest during optogenetic stimulation of the spinal cord. In this work, we present the microfabrication process for the wafer-level development of such a compact, active, transparent and flexible implant. The transparent, passive array of electrodes and tracks have been developed using graphene, on top of which chips have been bonded using flip-chip bonding techniques. To provide high flexibility, soft encapsulation, using polydimethylsiloxane (PDMS) has been used. Preliminary measurements after the bonding process have shown resistance values in the range of kΩ for the combined tracks and ball-bonds.
Original languageEnglish
Pages218-219
Number of pages2
Publication statusPublished - 29 Oct 2019
EventIEEE Nanotechnology Materials and Devices Conference - Stockholm, Sweden
Duration: 27 Oct 201930 Oct 2019
https://www.nmdc2019.conf.kth.se

Conference

ConferenceIEEE Nanotechnology Materials and Devices Conference
Abbreviated titleIEEE NMDC
CountrySweden
CityStockholm
Period27/10/1930/10/19
Internet address

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