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Faradaic and non-faradaic depletions by anodic electrode corrosion with strong electrolytes on tautochrone curve interdigitated electrodes

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cris.virtual.department Universiti Malaysia Perlis
cris.virtualsource.department 3f983c2e-28f9-4f7e-9c19-b081a6c20fd8
dc.contributor.author Jia-Chun Lim
dc.contributor.author Subash Chandra Bose Gopinath
dc.contributor.author Hemavathi Krishnan
dc.contributor.author Sing-Mei Tan
dc.date.accessioned 2026-01-21T01:58:33Z
dc.date.available 2026-01-21T01:58:33Z
dc.date.issued 2025
dc.description.abstract By integrating conventional parallel electrodes with two semi-circular curves, a new tautochrone curve interdigitated electrodes (TCIDE) biosensor was fabricated to be compatible for Faradaic and non-Faradaic measurements. Scanning electron microscopy affirmed the immaculate fabrication, as multiple scans showed that both the width and gap of electrodes were 50.0 μm, with a maximum percentage error of ∼8.0 %. A maximum current of 29.54 μA was generated with a strong electrolyte (pH 2), signifying the weak adaptability of the device to a highly acidic medium. The stability of the biosensor was further evaluated by prolonging the exposure duration to different pH levels for 5 min. Substantial increases in current were recorded under extreme pH environments (pH 2, 3, and 12) over the duration at 2.0 V, while others maintained excellent stability. A high-power microscope revealed that the anodic aluminium transducers experienced surface corrosion, elucidating the unusual current fluctuations. The mechanisms of anodic corrosion caused by the strong electrolytes were additionally proposed and discussed. As validated by electrochemical impedance spectroscopy, this study provides valuable insights into the declined biosensing performances of corroded anodes.
dc.identifier.doi 10.1016/j.matchemphys.2024.130193
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S025405842401321X
dc.identifier.uri https://hdl.handle.net/20.500.14170/15812
dc.language.iso en
dc.publisher Elsevier Ltd
dc.relation.ispartof Materials Chemistry and Physics
dc.relation.issn 0254-0584
dc.subject Aluminium transducer
dc.subject Conductance
dc.subject Electrochemical impedance spectroscopy
dc.subject Nanoscale imaging
dc.subject pH insensitivity
dc.title Faradaic and non-faradaic depletions by anodic electrode corrosion with strong electrolytes on tautochrone curve interdigitated electrodes
dc.type journal-article
dspace.entity.type Publication
oaire.citation.endPage 10
oaire.citation.startPage 1
oaire.citation.volume 331
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
oairecerif.author.affiliation Universiti Malaysia Perlis
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