Vaš brskalnik ne omogoča JavaScript!
JavaScript je nujen za pravilno delovanje teh spletnih strani. Omogočite JavaScript ali pa uporabite sodobnejši brskalnik.
Nacionalni portal odprte znanosti
Odprta znanost
DiKUL
slv
|
eng
Iskanje
Brskanje
Novo v RUL
Kaj je RUL
V številkah
Pomoč
Prijava
Surface stabilized topological solitons in nematic liquid crystals
ID
Nys, Inge
(
Avtor
),
ID
Berteloot, Brecht
(
Avtor
),
ID
Poy, Guilhem
(
Avtor
)
PDF - Predstavitvena datoteka,
prenos
(8,27 MB)
MD5: A67BC9F9AC6139C341BC1B297921F4F3
URL - Izvorni URL, za dostop obiščite
https://www.mdpi.com/2073-4352/10/9/840
Galerija slik
Izvleček
Photo-alignment is a versatile tool to pattern the alignment at the confining substrates in a liquid crystal (LC) cell. Arbitrary alignment patterns can be created by using projection with a spatial light modulator (SLM) for the illumination. We demonstrate that a careful design of the alignment patterns allows the stabilization of topological solitons in nematic liquid crystal (NLC) cells, without the need for chirality or strong confinement. The created LC configurations are stabilized by the anchoring conditions imposed at the substrates. The photo-aligned background at both substrates is uniformly planar aligned, and ring-shaped regions with a 180° azimuthal rotation are patterned with an opposite sense of rotation at the top and bottom substrate. A disclination-free structure containing a closed ring of vertically oriented directors is formed when the patterned rings at the top and bottom substrate overlap. Thanks to the topological stability, a vertical director orientation in the bulk is observed even when the centra of both patterned rings are shifted over relatively large distances. The combination of numerical simulations with experimental measurements allows identification of the 3D director configuration in the bulk. A finite element (FE) Q-tensor simulation model is applied to find the equilibrium director configuration and optical simulations are used to confirm the correspondence with experimental microscopy measurements. The created LC configurations offer opportunities in the field of optical devices, light guiding and switching, particle trapping and studies of topological LC structures.
Jezik:
Angleški jezik
Ključne besede:
nematic liquid crystals
,
topological solitons
,
optics
Tipologija:
1.01 - Izvirni znanstveni članek
Organizacija:
FMF - Fakulteta za matematiko in fiziko
Status publikacije:
Objavljeno
Različica publikacije:
Objavljena publikacija
Leto izida:
2020
Št. strani:
17 str.
Številčenje:
Vol. 10, art. no. 840
PID:
20.500.12556/RUL-124794
UDK:
538.9
ISSN pri članku:
2073-4352
DOI:
10.3390/cryst10090840
COBISS.SI-ID:
52294147
Datum objave v RUL:
18.02.2021
Število ogledov:
964
Število prenosov:
241
Metapodatki:
Citiraj gradivo
Navadno besedilo
BibTeX
EndNote XML
EndNote/Refer
RIS
ABNT
ACM Ref
AMA
APA
Chicago 17th Author-Date
Harvard
IEEE
ISO 690
MLA
Vancouver
:
Kopiraj citat
Objavi na:
Gradivo je del revije
Naslov:
Crystals
Skrajšan naslov:
Crystals
Založnik:
MDPI
ISSN:
2073-4352
COBISS.SI-ID:
36677893
Licence
Licenca:
CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:
http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:
To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:
18.02.2021
Sekundarni jezik
Jezik:
Slovenski jezik
Ključne besede:
nematski tekoči kristali
,
topološki solitoni
,
optika
Projekti
Financer:
ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:
P1-0099
Naslov:
Fizika mehkih snovi, površin in nanostruktur
Financer:
EC - European Commission
Program financ.:
H2020
Številka projekta:
834256
Naslov:
Interacting optical and topological solitons in frustrated cholesterics
Akronim:
OPTOSOL
Podobna dela
Podobna dela v RUL:
Podobna dela v drugih slovenskih zbirkah:
Nazaj