Jeffrey Christopher Everts (Avtor), Bohdan Senyuk (Avtor), Haridas Mundoor (Avtor), Miha Ravnik (Avtor), Ivan I. Smalyukh (Avtor)

Povzetek

The physical behavior of anisotropic charged colloids is determined by their material dielectric anisotropy, affecting colloidal self-assembly, biological function, and even out-of-equilibrium behavior. However, little is known about anisotropic electrostatic screening, which underlies all electrostatic effective interactions in such soft or biological materials. In this work, we demonstrate anisotropic electrostatic screening for charged colloidal particles in a nematic electrolyte. We show that material anisotropy behaves markedly different from particle anisotropy. The electrostatic potential and pair interactions decay with an anisotropic Debye screening length, contrasting the constant screening length for isotropic electrolytes. Charged dumpling-shaped near-spherical colloidal particles in a nematic medium are used as an experimental model system to explore the effects of anisotropic screening, demonstrating competing anisotropic elastic and electrostatic effective pair interactions for colloidal surface charges tunable from neutral to high, yielding particle-separated metastable states. Generally, our work contributes to the understanding of electrostatic screening in nematic anisotropic media.

Ključne besede

elektrostatika;nematski elektroliti;koloidi;fizika mehke snovi;electrostatics;nematic electrolytes;colloids;soft matter physics;

Podatki

Jezik: Angleški jezik
Leto izida:
Tipologija: 1.01 - Izvirni znanstveni članek
Organizacija: UL FMF - Fakulteta za matematiko in fiziko
UDK: 537.2
COBISS: 49147651 Povezava se bo odprla v novem oknu
ISSN: 2375-2548
Št. ogledov: 324
Št. prenosov: 153
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: elektrostatika;nematski elektroliti;koloidi;fizika mehke snovi;
Strani: 12 str.
Letnik: ǂVol. ǂ7
Zvezek: ǂart. no. ǂeabd0662
Čas izdaje: Jan. 2021
DOI: 10.1126/sciadv.abd0662
ID: 12512665