0434732 - ÚFCH JH 2016 RIV GB eng J - Článek v odborném periodiku
Silver, Barry Richard - Holub, Karel - Mareček, Vladimír
A simple electrochemical methodology for evaluation of the velocity of electroosmotic flow at the tip of polarized microcapillary.
Electrochimica acta. Roč. 156, FEB 2015 (2015), s. 316-320. ISSN 0013-4686. E-ISSN 1873-3859
Grant CEP: GA ČR GA13-04630S
Institucionální podpora: RVO:61388955
Klíčová slova: ion transport * electroosmotic flow * AC impendance
Kód oboru RIV: CG - Elektrochemie
Impakt faktor: 4.803, rok: 2015 ; AIS: 0.858, rok: 2015
DOI: https://doi.org/10.1016/j.electacta.2014.07.144

A simple electrochemical methodology for evaluation of the velocity of electroosmotic flow at the tip of a polarized microcapillary is herein described. The methodology relies on the application of a composite, potentiostatically-controlled voltage signal which comprises both AC and DC polarization components. Subsequent analysis of the current-time response yields an approximation for the velocity of electroosmotic flow at the microcapillary tip. Using this methodology, it is also herein shown, that previously observed low-frequency pseudo-inductive behaviour is related to an accumulation of ions into the capillary tip region under an applied potential via a mechanism based on electroosmosis.
Trvalý link: http://hdl.handle.net/11104/0238729