Charge injection capacity of ferroelectric microelectrodes for bioelectronic applications

Charge injection capacity of ferroelectric microelectrodes for bioelectronic applications

We analyze the extracellular stimulation current and the charge injection capacity (CIC) of microelectrodes coated with an insulating layer to prevent toxic electrochemical effects in bioelectronic applications. We show for a microelectrode coated with an insulating ferroelectric layer that the ferr...

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Main Author: Maximilian T. Becker
Format: Article
Language:English
Published: AIP Publishing LLC 2021-06-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/5.0049202
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spelling doaj-69c633f4a8f643d9995baf0853b6a5b92021-07-08T13:20:00ZengAIP Publishing LLCAIP Advances2158-32262021-06-01116065106065106-610.1063/5.0049202Charge injection capacity of ferroelectric microelectrodes for bioelectronic applicationsMaximilian T. Becker0NMI Natural and Medical Sciences Institute, Markwiesenstr. 55, 72770 Reutlingen, Germany and Physikalisches Institut, Center for Quantum Science (CQ) and LISA+, University of Tübingen, Auf der Morgenstelle 14, 72076 Tübingen, GermanyWe analyze the extracellular stimulation current and the charge injection capacity (CIC) of microelectrodes coated with an insulating layer to prevent toxic electrochemical effects in bioelectronic applications. We show for a microelectrode coated with an insulating ferroelectric layer that the ferroelectric polarization current contributes to the extracellular stimulation current. Depending on the remanent polarization Pr of the ferroelectric, the polarization current in the switching regime can increase the CIC by up to two orders of magnitude as compared to the commonly used extracellular capacitive stimulation with microelectrodes that are coated with a dielectric layer.http://dx.doi.org/10.1063/5.0049202
collection DOAJ
language English
format Article
sources DOAJ
author Maximilian T. Becker
spellingShingle Maximilian T. Becker
Charge injection capacity of ferroelectric microelectrodes for bioelectronic applications
AIP Advances
author_facet Maximilian T. Becker
author_sort Maximilian T. Becker
title Charge injection capacity of ferroelectric microelectrodes for bioelectronic applications
title_short Charge injection capacity of ferroelectric microelectrodes for bioelectronic applications
title_full Charge injection capacity of ferroelectric microelectrodes for bioelectronic applications
title_fullStr Charge injection capacity of ferroelectric microelectrodes for bioelectronic applications
title_full_unstemmed Charge injection capacity of ferroelectric microelectrodes for bioelectronic applications
title_sort charge injection capacity of ferroelectric microelectrodes for bioelectronic applications
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2021-06-01
description We analyze the extracellular stimulation current and the charge injection capacity (CIC) of microelectrodes coated with an insulating layer to prevent toxic electrochemical effects in bioelectronic applications. We show for a microelectrode coated with an insulating ferroelectric layer that the ferroelectric polarization current contributes to the extracellular stimulation current. Depending on the remanent polarization Pr of the ferroelectric, the polarization current in the switching regime can increase the CIC by up to two orders of magnitude as compared to the commonly used extracellular capacitive stimulation with microelectrodes that are coated with a dielectric layer.
url http://dx.doi.org/10.1063/5.0049202
work_keys_str_mv AT maximiliantbecker chargeinjectioncapacityofferroelectricmicroelectrodesforbioelectronicapplications
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