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Communication Dans Un Congrès Année : 2022

Fabrication of Micro Optical Ring Electrodes for Scanning Photoelectrochemical Microscopy Applications

Nikita Thomas
  • Fonction : Auteur
Nafisa Ahmed
  • Fonction : Auteur
Sabine Kuss
  • Fonction : Auteur

Résumé

Micro-Optical-Ring electrodes (MOREs) have shown their usefulness in nonbiological applications in the past, but their application to biological samples for diagnostic purposes has yet to be explored. Herein, a simple and cost effective fabrication method of MOREs with a defined geometry is presented. These microelectrodes were characterized by electrochemistry, numerical modeling and Scanning Electron Microscopy (SEM). The integration of MOREs into scanning probe techniques, such as Scanning Electrochemical/Photoelectrochemical Microscopy (SECM/SPECM) enables the sensitive detection and quantification of cell metabolites at the micro- and nanoscopic level. The applicability of the fabricated MOREs was tested by monitoring oxygen production in the biological model systems of Chlorella kessleri and Eremosphaera viridis . A variation in oxygen production levels by the algae was observed in the presence and absence of light, emitted through the MORE-integrated optical fiber. This proof-of-concept study demonstrates the applicability of MOREs to biological systems.
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Dates et versions

hal-04457678 , version 1 (14-02-2024)

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Citer

Nikita Thomas, Nafisa Ahmed, Dao Trinh, Sabine Kuss. Fabrication of Micro Optical Ring Electrodes for Scanning Photoelectrochemical Microscopy Applications. 2022 ECS - The Electrochemical Society, May 2022, Vancouver, Canada. pp.1867-1867, ⟨10.1149/MA2022-01431867mtgabs⟩. ⟨hal-04457678⟩
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