B. L. Werkhoven (Avtor), Jeffrey Christopher Everts (Avtor), S. Samin (Avtor), R. van Roij (Avtor)

Povzetek

We theoretically study the electrokinetic problem of a pressure-induced liquid flow through a narrow long channel with charged walls, going beyond the classical Helmholtz-Schmolukowski picture by considering the surprisingly strong combined effect of (i) Stern-layer conductance and (ii) dynamic chargeregulating rather than fixed surface charges. We find that the water flow induces, apart from the well-known streaming potential, also a strongly heterogeneous surface charge and zeta potential on chemically homogeneous channel walls. Moreover, we identify a novel steady state with a nontrivial 3D electric flux with 2D surface charges acting as sources and sinks. For a pulsed pressure drop our findings also provide a first-principles explanation for ill-understood experiments on the effect of flow on interfacial chemistry [D. Lis et al., Science 344, 1138 (2014)].

Ključne besede

elektrokinetika;površinski pojavi;hidrodinamika;electrokinetics;surface phenomena;hydrodynamics;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
Založnik: American Physical Society
UDK: 537.36
COBISS: 3210852 Povezava se bo odprla v novem oknu
ISSN: 0031-9007
Št. ogledov: 834
Št. prenosov: 538
Ocena: 0 (0 glasov)
Metapodatki: JSON JSON-RDF JSON-LD TURTLE N-TRIPLES XML RDFA MICRODATA DC-XML DC-RDF RDF

Ostali podatki

Sekundarni jezik: Slovenski jezik
Sekundarne ključne besede: elektrokinetika;površinski pojavi;hidrodinamika;
Strani: str. 264502-1-264502-6
Letnik: ǂVol. ǂ120
Zvezek: ǂiss. ǂ26
Čas izdaje: 2018
DOI: 10.1103/PhysRevLett.120.264502
ID: 10943478