Topological-defect-induced surface charge heterogeneities in nematic electrolytes

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

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.

• Jezik: Angleški jezik
• Ključne besede: nematic liquid crystals, topological defects, flexoelectricity, dielectric properties, electrostatics
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FMF - Fakulteta za matematiko in fiziko
• Status publikacije: Objavljeno
• Različica publikacije: Recenzirani rokopis
• Leto izida: 2020
• Št. strani: Str. 037801-1-037801-7
• Številčenje: Vol. 125, iss. 3
• PID: 20.500.12556/RUL-117812
• UDK: 538.9
• ISSN pri članku: 0031-9007
• DOI: 10.1103/PhysRevLett.125.037801
• COBISS.SI-ID: 23706371
• Datum objave v RUL: 27.07.2020

Gradivo je del revije

• Naslov: Physical review letters
• Skrajšan naslov: Phys. rev. lett.
• Založnik: American Physical Society
• ISSN: 0031-9007
• COBISS.SI-ID: 1282575

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: nematski tekoči kristali, topološki defekti, fleksoelektričnost, dielektričnost, elektrostatika