A phenomenological model of photo-induced traveling waves in liquid-crystalline langmuir monolayers

Tohru Okuzono, Yuka Tabe, Hiroshi Yokoyama

Research output: Contribution to journalArticle

Abstract

A phenomenological model of photo-induced traveling waves in liquid-crystalline Langmuir monolayers is presented. A linear stability analysis and numerical simulations of this model reveal that there are two oscillatory unstable modes with lower and higher wavenumbers which cause the traveling waves. The unstable mode with the lower wavenumber arises due to an interplay between the spontaneous splay deformation of liquid crystal order and the anisotropic photoexcitation of molecules. The other unstable mode with the higher wavenumber is concerned with the phase separation of the concentration field induced by the spontaneous splay deformation. The numerical simulations also show the coexistence between these two modes for certain parameter values.

Original languageEnglish
JournalMolecular Crystals and Liquid Crystals
Volume435
DOIs
Publication statusPublished - 2005
Externally publishedYes

Fingerprint

monomolecular films
traveling waves
Monolayers
Crystalline materials
Liquid Crystals
Linear stability analysis
Photoexcitation
Computer simulation
Liquids
liquids
Phase separation
Liquid crystals
Molecules
photoexcitation
simulation
liquid crystals
causes
molecules

Keywords

  • Langmuir monolayers
  • Nonequilibrium structures
  • Photo-isomerization
  • Traveling waves

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

A phenomenological model of photo-induced traveling waves in liquid-crystalline langmuir monolayers. / Okuzono, Tohru; Tabe, Yuka; Yokoyama, Hiroshi.

In: Molecular Crystals and Liquid Crystals, Vol. 435, 2005.

Research output: Contribution to journalArticle

@article{c72c5fca9aa240e486a7ef8c12592a7e,
title = "A phenomenological model of photo-induced traveling waves in liquid-crystalline langmuir monolayers",
abstract = "A phenomenological model of photo-induced traveling waves in liquid-crystalline Langmuir monolayers is presented. A linear stability analysis and numerical simulations of this model reveal that there are two oscillatory unstable modes with lower and higher wavenumbers which cause the traveling waves. The unstable mode with the lower wavenumber arises due to an interplay between the spontaneous splay deformation of liquid crystal order and the anisotropic photoexcitation of molecules. The other unstable mode with the higher wavenumber is concerned with the phase separation of the concentration field induced by the spontaneous splay deformation. The numerical simulations also show the coexistence between these two modes for certain parameter values.",
keywords = "Langmuir monolayers, Nonequilibrium structures, Photo-isomerization, Traveling waves",
author = "Tohru Okuzono and Yuka Tabe and Hiroshi Yokoyama",
year = "2005",
doi = "10.1080/15421400590955316",
language = "English",
volume = "435",
journal = "Molecular Crystals and Liquid Crystals",
issn = "1542-1406",
publisher = "Taylor and Francis Ltd.",

}

TY - JOUR

T1 - A phenomenological model of photo-induced traveling waves in liquid-crystalline langmuir monolayers

AU - Okuzono, Tohru

AU - Tabe, Yuka

AU - Yokoyama, Hiroshi

PY - 2005

Y1 - 2005

N2 - A phenomenological model of photo-induced traveling waves in liquid-crystalline Langmuir monolayers is presented. A linear stability analysis and numerical simulations of this model reveal that there are two oscillatory unstable modes with lower and higher wavenumbers which cause the traveling waves. The unstable mode with the lower wavenumber arises due to an interplay between the spontaneous splay deformation of liquid crystal order and the anisotropic photoexcitation of molecules. The other unstable mode with the higher wavenumber is concerned with the phase separation of the concentration field induced by the spontaneous splay deformation. The numerical simulations also show the coexistence between these two modes for certain parameter values.

AB - A phenomenological model of photo-induced traveling waves in liquid-crystalline Langmuir monolayers is presented. A linear stability analysis and numerical simulations of this model reveal that there are two oscillatory unstable modes with lower and higher wavenumbers which cause the traveling waves. The unstable mode with the lower wavenumber arises due to an interplay between the spontaneous splay deformation of liquid crystal order and the anisotropic photoexcitation of molecules. The other unstable mode with the higher wavenumber is concerned with the phase separation of the concentration field induced by the spontaneous splay deformation. The numerical simulations also show the coexistence between these two modes for certain parameter values.

KW - Langmuir monolayers

KW - Nonequilibrium structures

KW - Photo-isomerization

KW - Traveling waves

UR - http://www.scopus.com/inward/record.url?scp=33644811335&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33644811335&partnerID=8YFLogxK

U2 - 10.1080/15421400590955316

DO - 10.1080/15421400590955316

M3 - Article

VL - 435

JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

SN - 1542-1406

ER -