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Topological-defect-induced surface charge heterogeneities in nematic electrolytes
Ravnik, Miha (Author), Everts, Jeffrey Christopher (Author)

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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.

Language:English
Keywords:nematic liquid crystals, topological defects, flexoelectricity, dielectric properties, electrostatics
Tipology:1.01 - Original Scientific Article
Organization:FMF - Faculty of Mathematics and Physics
Year:2020
Number of pages:str. 037801-1-037801-7
Numbering:Vol. 125, iss. 3
UDC:538.9
ISSN on article:0031-9007
DOI:10.1103/PhysRevLett.125.037801 Link is opened in a new window
COBISS.SI-ID:23706371 Link is opened in a new window
Views:152
Downloads:191
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Record is a part of a journal

Title:Physical review letters
Shortened title:Phys. rev. lett.
Publisher:American Physical Society
ISSN:0031-9007
COBISS.SI-ID:1282575 This link opens in a new window

Document is financed by a project

Funder:EC - European Commission
Funding Programme:H2020
Project no.:795377
Name:Topological Colloidal Double Layers
Acronym:TCDL

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:P1-0099
Name:Fizika mehkih snovi, površin in nanostruktur

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:J1-1697
Name:Študij sil znotraj celic s pomočjo deformacij fotonskih kapljic

Funder:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije (ARRS)
Project no.:L1-8135
Name:Biološka zdravila: detektor tvorbe proteinskih delcev na osnovi tekočih kristalov

Secondary language

Language:Slovenian
Keywords:nematski tekoči kristali, topološki defekti, fleksoelektričnost, dielektričnost, elektrostatika

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