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

Abstract

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 distribution of surface charges and the effect is enhanced when the liquid crystal is flexoelectric. We demonstrate the principle for patterned surfaces and charged colloidal spheres. More generally, our results indicate an interesting approach to control surface charges on external surfaces without changing the surface chemistry.

Keywords

nematski tekoči kristali;topološki defekti;fleksoelektričnost;dielektričnost;elektrostatika;nematic liquid crystals;topological defects;flexoelectricity;dielectric properties;electrostatics;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UL FMF - Faculty of Mathematics and Physics
UDC: 538.9
COBISS: 23706371 Link will open in a new window
ISSN: 0031-9007
Views: 1453
Downloads: 400
Average score: 0 (0 votes)
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Other data

Secondary language: Slovenian
Secondary keywords: nematski tekoči kristali;topološki defekti;fleksoelektričnost;dielektričnost;elektrostatika;
Pages: str. 037801-1-037801-7
Volume: ǂVol. ǂ125
Issue: ǂiss. ǂ3
Chronology: 2020
DOI: 10.1103/PhysRevLett.125.037801
ID: 11920741