Screened Coulomb interactions of general macroions with nonzero particle volume

Povzetek

A semianalytical approach is developed to calculate the effective pair potential of rigid arbitrarily shaped macroions with a nonvanishing particle volume, valid within linear screening theory and the mean-field approximation. The essential ingredient for this framework is a mapping of the particle to a singular charge distribution with adjustable effective charge and shape parameters determined by the particle surface electrostatic potential. For charged spheres, this method reproduces the well-known Derjaguin- andau-Verwey-Overbeek (DLVO) potential. Further exemplary benchmarks of the method for more complicated cases, like tori, triaxial ellipsoids, and additive torus-sphere mixtures, leads to accurate closed-form integral expressions for all particle separations and orientations. The findings are relevant for determining the phase behavior of macroions with experiments and simulations for various particle shapes.

Ključne besede

fizika mehke snovi;elektrostatika;elektrostatski potencial;makroioni;soft matter physics;electrostatics;electrostatic potential;macroions;

Podatki

Jezik:	Angleški jezik
Leto izida:	2020
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL FMF - Fakulteta za matematiko in fiziko
UDK:	537.2
COBISS:	23873539
ISSN:	2643-1564
Št. ogledov:	386
Št. prenosov:	193
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	fizika mehke snovi;elektrostatika;elektrostatski potencial;makroioni;
Strani:	str. 033144-1-033144-13
Letnik:	ǂVol. ǂ2
Zvezek:	ǂiss. ǂ3
Čas izdaje:	2020
DOI:	10.1103/PhysRevResearch.2.033144
ID:	11924506