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

Andrada Velea; Sten Vollebregt; Vasso Giagka

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

Andrada Velea, Sten Vollebregt, Vasso Giagka

Research output: Contribution to conference › Abstract › Scientific

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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 language	English
Pages	218-219
Number of pages	2
Publication status	Published - 2019
Event	2019 IEEE 14th Nanotechnology Materials and Devices Conference (NMDC) - Stockholm, Sweden, Stockholm, Sweden Duration: 27 Oct 2019 → 30 Oct 2019 https://www.nmdc2019.conf.kth.se

Conference

Conference	2019 IEEE 14th Nanotechnology Materials and Devices Conference (NMDC)
Abbreviated title	IEEE NMDC
Country/Territory	Sweden
City	Stockholm
Period	27/10/19 → 30/10/19
Internet address	https://www.nmdc2019.conf.kth.se

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

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. ",

author = "Andrada Velea and Sten Vollebregt and Vasso Giagka",

year = "2019",

language = "English",

pages = "218--219",

note = "2019 IEEE 14th Nanotechnology Materials and Devices Conference (NMDC), IEEE NMDC ; Conference date: 27-10-2019 Through 30-10-2019",

url = "https://www.nmdc2019.conf.kth.se",

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Towards a Microfabricated Flexible Graphene-Based Active Implant for Tissue Monitoring During Optogenetic Spinal Cord Stimulation. / Velea, Andrada; Vollebregt, Sten ; Giagka, Vasso.
2019. 218-219 Abstract from 2019 IEEE 14th Nanotechnology Materials and Devices Conference (NMDC), Stockholm, Sweden.

Research output: Contribution to conference › Abstract › Scientific

TY - CONF

T1 - Towards a Microfabricated Flexible Graphene-Based Active Implant for Tissue Monitoring During Optogenetic Spinal Cord Stimulation

AU - Velea, Andrada

AU - Vollebregt, Sten

AU - Giagka, Vasso

PY - 2019

Y1 - 2019

N2 - 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.

AB - 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.

UR - https://static.sys.kth.se/sci/aphys/photonics/NMDC2019_abstracts.pdf

M3 - Abstract

SP - 218

EP - 219

T2 - 2019 IEEE 14th Nanotechnology Materials and Devices Conference (NMDC)

Y2 - 27 October 2019 through 30 October 2019

ER -

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

Abstract

Conference

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