Focused ion beam fabrication of high-resolution electrochemical-electroluminescence coupling bipolar nanoelectrode array sensors
High temporal and spatial resolution electrochemical sensor arrays can greatly benefit various parallel sensing applications. Herein, we provide a simple method for the controlled and scaled fabrication of bipolar nanoelectrode arrays (BPnEAs) for high-resolution electrochemical sensing applications...
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2024-12-01
|
| Series: | Sensors and Actuators Reports |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666053924000365 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | High temporal and spatial resolution electrochemical sensor arrays can greatly benefit various parallel sensing applications. Herein, we provide a simple method for the controlled and scaled fabrication of bipolar nanoelectrode arrays (BPnEAs) for high-resolution electrochemical sensing applications. BPnEAs are prepared on silicon nitride film windows through the dual-beam FIB nanofabrication technique. Coupling a conventional electrochemical redox reaction with a tris (2,20-bipyridyl) ruthenium /2-(dibutylamino)ethanol electrochemiluminescence (ECL) system, which is based on a high-viscosity solvent to reduce molecular diffusion, allows for the reporting of conventional electrochemical redox processes with high spatial and temporal resolution. The use of the BPnEA-ECL sensor is demonstrated on 10 × 10 Pt or C BPnEAs for monitoring the reduction of 0.5 M H2SO4. BPnEA-ECL sensors containing different electrode materials (Pt and C) are reported for the first time and are used to monitor the reduction of 0.5 M H2SO4, thus revealing the difference in electrocatalytic capacities between Pt and C. Subsequently, we reveal the outstanding capabilities of the BPnEA-ECL system for catalyst screening. |
|---|---|
| ISSN: | 2666-0539 |