Light beam induced finger instability in a photosensitive liquid crystal cell
Author
dc.contributor.author
Andrade Silva, Ignacio
Author
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Clerc Gavilán, Marcel Gabriel
Author
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González Cortés, Martín Gregorio
Author
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Odent, Vincent
Admission date
dc.date.accessioned
2021-11-16T15:10:42Z
Available date
dc.date.available
2021-11-16T15:10:42Z
Publication date
dc.date.issued
2021
Cita de ítem
dc.identifier.citation
Physical Review Research 3, L022027 (2021)
es_ES
Identifier
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10.1103/PhysRevResearch.3.L022027
Identifier
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https://repositorio.uchile.cl/handle/2250/182730
Abstract
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Interfaces limiting two phases in driven systems may exhibit rich dynamical behaviors. Optically induced phase transitions are of particular interest for the study of interfacial phenomena. Dye-doped liquid crystals offer an ideal scenario in which phase transitions can be induced by purely optical means. Light-driven interface dynamics and spatial structure have been partially unveiled. Here we report the emergence of fingerlike structures at the nematic-isotropic interface in a photoisomerization experiment. A reduced model reveals the instability origin, which is derived from a model for the dopant concentration and the order parameter. Analogously to the hydrodynamically triggered finger instability, the interdigital space follows a power law. When the cell is in the isotropic phase and the light turns off, transient foamlike and labyrinthine textures are observed. Numerical simulations reproduce the observed behaviors. Our findings open an avenue for optically addressed interfacial dynamics and shape tailoring of spatial textures, not only liquid crystals but also polymers.
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Patrocinador
dc.description.sponsorship
ANID-PFCHA Doctorado Nacional Grant 2017-21171672
ANID Millenium Science initiative program ICN17_012
Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT)
CONICYT FONDECYT 1210353
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Lenguage
dc.language.iso
en
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Publisher
dc.publisher
Amer Physical Soc.
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Type of license
dc.rights
Attribution-NonCommercial-NoDerivs 3.0 United States