Ring Electrode Geometry for Microfluidic Electrochemistry.

Autor: Ledden B; SFC Fluidics, 534 West Research Center Blvd., Ste. 260, Fayetteville, AR USA 72701., Bruton J Jr; SFC Fluidics, 534 West Research Center Blvd., Ste. 260, Fayetteville, AR USA 72701.
Jazyk: angličtina
Zdroj: Sensors and actuators. B, Chemical [Sens Actuators B Chem] 2019 Oct 15; Vol. 297. Date of Electronic Publication: 2019 Jun 25.
DOI: 10.1016/j.snb.2019.126735
Abstrakt: We developed a ring electrode sensor for down-stream electrochemical sensing of microfluidic ELISA assay. The sensor is designed to easily integrate into the flow environment. Noble metal inks on Low Temperature Co-fired Ceramic provide straight forward fabrication at the mesoscale yielding robust sensors with very low sensing volumes. Two different sensor geometries were modeled. The best design was fabricated and tested in both static and flowing solutions. The sensor exhibits both macroelectrode and microelectrode behavior depending on fluid flow rate. Sensors of this type may be ideal for applications where electrochemical detection is desired in a flowing solution since the ring electrode has low propensity for bubble trapping.
Databáze: MEDLINE