Short communication: a simple and accurate method of measuring the zeta-potential of microfluidic channels

Fernández-Mateo, Raúl, García-Sánchez, Pablo, Calero, Víctor, Ramos, Antonio and Morgan, Hywel (2021) Short communication: a simple and accurate method of measuring the zeta-potential of microfluidic channels. Electrophoresis, 43 (12), 1259-1262. (doi:10.1002/elps.202100267).

Record type: Article

Abstract

We describe an improved method for determining the electroosmotic mobility and zeta potential of surfaces based on a current-monitoring method. This technique eliminates the requirement for measurements of channel dimensions and sample conductivities, leading to a simple high precision measurement. The zeta potential of PDMS is measured for native surfaces and surfaces treated with a nonionic surfactant in low-conductivity electrolytes.

Text

Electrophoresis - 2021 - Fern ndez‐Mateo - Short communication A simple and accurate method of measuring the - Version of Record

Available under License Creative Commons Attribution.

Download (248kB)

More information

Accepted/In Press date: 23 October 2020

Published date: 9 November 2021

Additional Information: Funding Information: . PGS and AR acknowledge Grant PGC2018‐099217‐B‐I00 funded by MCIN/AEI/ 10.13039/501100011033 and by “ERDF A way of making Europe” Publisher Copyright: © 2021 The Authors. Electrophoresis published by Wiley-VCH GmbH.

Keywords: current-monitoring method, electroosmosis, PDMS, zeta-potential