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Polymer-based interconnection cables to integrate with flexible penetrating microelectrode arrays

Title
Polymer-based interconnection cables to integrate with flexible penetrating microelectrode arrays
Authors
Oh, KeonghwanByun, DonghakKim, Sohee
DGIST Authors
Kim, Sohee
Issue Date
2017
Citation
Biomedical Microdevices, 19(4)
Type
Article
Article Type
Article
Keywords
CablesDurabilityElectrochemical Impedance Spectroscopy (EIS)Electrochemical PhenomenaElectrodesEquivalent Circuit ModelEquivalent CircuitsFlat CablesFlexible Penetrating Microelectrode Array (FPMA)Integrated Circuit InterconnectsInterconnection CableInterconnection MethodMicroelectrode ArrayMicroelectrodesNeural InterfaceNeural InterfacesNeural Signal RecordingParylene CPhosphate Buffered Saline SolutionsPolyimidePolyimidesPolymeric ImplantsWire
ISSN
1387-2176
Abstract
There have been various types of interconnection methods for neural interfacing electrodes, such as silicon ribbon cables, wire bonding and polymer-based cables. In this study, interconnection cables were developed for integration with a Flexible Penetrating Microelectrode Array (FPMA) that was previously developed for neural signal recording or stimulation. Polyimide and parylene C were selected as base materials for the interconnection cables as both materials can preserve the flexibility of the FPMA better than other interconnection methods such as silicon ribbon cable or wire bonding. We conducted durability tests to determine if the interconnection cables were suitable for in-vivo implantation, by long-term soaking of the cables in phosphate buffered saline solution. We measured the changes in impedance over time, and equivalent circuit models were used to analyze the electrochemical phenomena on the surface of the cables. Lastly, we implanted the cable-integrated electrodes device onto rabbit’s sciatic nerve and recorded neural signals to prove the feasibility of the developed FPMA integration system. © 2017, Springer Science+Business Media, LLC.
URI
http://hdl.handle.net/20.500.11750/4435
DOI
10.1007/s10544-017-0217-9
Publisher
Springer New York LLC
Related Researcher
  • Author Kim, So Hee Neural Interfaces & MicroSystems Lab
  • Research Interests Neural interface; Neural stimulation; Bio MEMS; Stretchable electronics; Numerical simulation of implant-body interactions
Files:
There are no files associated with this item.
Collection:
Robotics EngineeringNeural Interfaces & MicroSystems Lab1. Journal Articles


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