Št. zadetkov: 8
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Oznake:
fizika mehke snovi;elektrostatika;elektrostatski potencial;makroioni;soft matter physics;electrostatics;electrostatic potential;macroions;
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 ...
Leto:
2020
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizikalna kemija;površinski pojavi;koloidi;električna dvojna plast;physical chemistry;charged surfaces;colloids;electric double layers;
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 char ...
Leto:
2018
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
nematske tekočine;elektrostatika;električna dvojna plast;fleksoelektričnost;površinsko sidranje;nematic fluids;electrostatics;electric double layer;flexoelectricity;surface anchoring;
We investigate the effects of electric double layers and flexoelectricity on the surface anchoring in general nematic fluids. Within a simplified model, we demonstrate for a nematic electrolyte how the surface anchoring strength can be affected by the surface charge, bulk ion concentration and/or fl ...
Leto:
2021
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
nematski tekoči kristali;topološki defekti;fleksoelektričnost;dielektričnost;elektrostatika;nematic liquid crystals;topological defects;flexoelectricity;dielectric properties;electrostatics;
We show that topological defects in an ion-doped nematic liquid crystal can be used to manipulate the surface charge distribution on chemically homogeneous, charge-regulating external surfaces, using a minimal theoretical model. In particular, the location and type of the defect encodes the precise ...
Leto:
2020
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;nematski tekoči kristali;topološki defekti;elektrostatska dvojna plast;condensed matter physics;nematic liquid crystals;topological defects;electrostatic double layer;
Charge profiles in liquid electrolytes are of crucial importance for applications such as supercapacitors, fuel cells, batteries, or the self-assembly of particles in colloidal or biological settings. However, creating localized (screened) charge profiles in the bulk of such electrolytes generally r ...
Leto:
2021
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
fizika kondenzirane snovi;nematski tekoči kristali;ionske tekočine;condensed matter physics;nematic liquid crystals;ionic fluids;
Adopting a spintronics-inspired approach, we study the reciprocal coupling between ionic charge currents and nematic texture dynamics in a uniaxial nematic electrolyte. Assuming quenched fluid dynamics, we develop equations of motion analogously to spin torque and spin pumping. Based on the principl ...
Leto:
2023
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
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Oznake:
elektrokinetika;površinski pojavi;hidrodinamika;electrokinetics;surface phenomena;hydrodynamics;
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 char ...
Leto:
2018
Vir:
Fakulteta za matematiko in fiziko (UL FMF)
Izvirni znanstveni članek
Oznake:
elektrostatika;nematski elektroliti;koloidi;fizika mehke snovi;electrostatics;nematic electrolytes;colloids;soft matter physics;
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 electrost ...
Leto:
2021
Vir:
Fakulteta za matematiko in fiziko (UL FMF)