High resolution voltammetric and field-effect transistor readout of carbon fiber microelectrode biosensors.
Journal
Sensors & diagnostics
ISSN: 2635-0998
Titre abrégé: Sens Diagn
Pays: England
ID NLM: 9918383983506676
Informations de publication
Date de publication:
01 May 2022
01 May 2022
Historique:
entrez:
1
6
2022
pubmed:
2
6
2022
medline:
2
6
2022
Statut:
ppublish
Résumé
Rapid and sensitive pH measurements with increased spatiotemporal resolution are imperative to probe neurochemical signals and illuminate brain function. We interfaced carbon fiber microelectrode (CFME) sensors with both fast scan cyclic voltammetry (FSCV) and field-effect transistor (FET) transducers for dynamic pH measurements. The electrochemical oxidation and reduction of functional groups on the surface of CFMEs affect their response over a physiologically relevant pH range. When measured with FET transducers, the sensitivity of the measurements over the measured pH range was found to be (101 ± 18) mV, which exceeded the Nernstian value of 59 mV by approximately 70%. Finally, we validated the functionality of CFMEs as pH sensors with FSCV
Identifiants
pubmed: 35647552
doi: 10.1039/d2sd00023g
pmc: PMC9119317
mid: NIHMS1797942
doi:
Types de publication
Journal Article
Langues
eng
Pagination
460-464Subventions
Organisme : NINDS NIH HHS
ID : R41 NS113702
Pays : United States
Déclaration de conflit d'intérêts
Conflicts of interest There are no conflicts to declare.
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