Electrochemical Redox Cycling with Pyrolytic Carbon Stacked-Layer Nanogap Electrodes.

ABSTRACT: Redox cycling (RC) amplification has been introduced as an efficient strategy to enhance signals in electrochemical sensing at low analyte concentrations of relevant biomarkers such as dopamine. RC amplification requires closely spaced and electrically separate electrodes, preferably with nanogaps. The aim of this study was to establish a method enabling the microfabrication of carbon-based stacked-layer nanogap electrodes (SLNE) designed for RC amplification. Pyrolytic carbon was employed as the electrode material and Al₂O₃ deposited by atomic layer deposition as the insulating layer in between the two electrodes. SLNE with 89 nm nanogaps were realized without the need for high-resolution lithography methods, and access to the bottom generator electrode was enabled b

SUBMITTER: Stovring N 

PROVIDER: S-EPMC11892468 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature