Novel Electrochemical Flow Sensor Based on Sensing the Convective-Diffusive Ionic Concentration Layer.
ACS Sens
; 4(7): 1806-1815, 2019 07 26.
Article
en En
| MEDLINE
| ID: mdl-31204472
ABSTRACT
Presented is a novel flow sensor based on electrochemical sensing of the ionic concentration-polarization (CP) layer developed within a microchannel-ion permselective membrane device. To demonstrate the working principle of the electrochemical flow sensor, the effect of advection on the transient and steady-state ionic concentration-polarization (CP) phenomenon in microchannel-Nafion membrane systems is studied. In particular, we focused on the local impedance, measured using an array of electrode pairs embedded at the bottom of the microchannel, as well as the total current across the permselective medium, as two approaches for estimating the flow. We examined both a stepwise application of CP under steady-state flow and a stepwise application of flow under steady-state CP.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Técnicas Analíticas Microfluídicas
/
Técnicas Electroquímicas
/
Movimiento
Límite:
Humans
Idioma:
En
Revista:
ACS Sens
Año:
2019
Tipo del documento:
Article
País de afiliación:
Israel