Jeffrey Christopher Everts (Avtor), Miha Ravnik (Avtor)

Povzetek

Charged surfaces in contact with liquids containing ions are accompanied in equilibrium by an electric double layer consisting of a layer of electric charge on the surface that is screened by a diffuse ion cloud in the bulk fluid.This screening cloud determines not only the interactions between charged colloidal particles or polyelectrolytes and their self-assembly into ordered structures, but it is also pivotal in understanding energy storage devices, such as electrochemical cells and supercapacitors. However, little is known to what spatial complexity the electric double layers can be designed. Here, we show that electric double layers of non-trivial topology and geometry -including tori, multi-tori and knots- can be realised in charged topological colloidal particles, using numerical modelling within a mean-field Poisson-Boltzmann theory.We show that the complexity of double layers -including geometry and topology- can be tuned by changing the Debye screening length of the medium, or by changing the shape and topology of the (colloidal) particle. More generally,this work is an attempt to introduce concepts of topology in the field of charged colloids, which could lead to novel exciting material design paradigms.

Ključne besede

fizikalna kemija;površinski pojavi;koloidi;električna dvojna plast;physical chemistry;charged surfaces;colloids;electric double layers;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 544.6/.7
COBISS: 3239524 Povezava se bo odprla v novem oknu
ISSN: 2045-2322
Št. ogledov: 851
Št. prenosov: 498
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: fizikalna kemija;površinski pojavi;koloidi;električna dvojna plast;
Strani: 10 str.
Letnik: ǂVol. ǂ8
Zvezek: ǂart. no. ǂ14119
Čas izdaje: Sep. 2018
DOI: 10.1038/s41598-018-32550-8
ID: 10961178