Transient light scattering of ferroelectric liquid crystals enhanced by adding ferroelectric liquid crystalline polymers

Manabu Kawasaki, Huai Yang, Hirotsugu Kikuchi, Tisato Kajiyama

Research output: Contribution to journalArticle

Abstract

A side-chain type ferroelectric liquid crystalline polymer (FLCP) was mixed with a low-molecular-weight ferroelectric liquid crystal (LMWFLC) to improve the light switching contrast for the transient light-scattering mode (TSM). Optical transmittance through an optically homogeneous chiral smectic C phase in a FLCP/LMWFLC composite system was observed by a polarizing optical microscope. The transmittance of the transparent state of the composite system upon the application of an a.c. electric field was almost the same in comparison with that of LMWFLC. On the other hand, the light-scattering intensity for the composite system upon the application of an a.c. electric field was somewhat stronger than that for LMWFLC. The enhancing mechanism of the transient light scattering induced by an addition of FLCP to LMWFLC has been discussed through the light switching measurements for free-standing FLC thin films.

Original languageEnglish
Pages (from-to)69-84
Number of pages16
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume381
Publication statusPublished - Dec 1 2002

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Liquid Crystals
Liquid crystal polymers
low molecular weights
Light scattering
Liquid crystals
Ferroelectric materials
light scattering
liquid crystals
polymers
liquids
Molecular weight
composite materials
transmittance
Large scale systems
electric fields
optical microscopes
Electric fields
Opacity
thin films
Microscopes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

Cite this

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abstract = "A side-chain type ferroelectric liquid crystalline polymer (FLCP) was mixed with a low-molecular-weight ferroelectric liquid crystal (LMWFLC) to improve the light switching contrast for the transient light-scattering mode (TSM). Optical transmittance through an optically homogeneous chiral smectic C phase in a FLCP/LMWFLC composite system was observed by a polarizing optical microscope. The transmittance of the transparent state of the composite system upon the application of an a.c. electric field was almost the same in comparison with that of LMWFLC. On the other hand, the light-scattering intensity for the composite system upon the application of an a.c. electric field was somewhat stronger than that for LMWFLC. The enhancing mechanism of the transient light scattering induced by an addition of FLCP to LMWFLC has been discussed through the light switching measurements for free-standing FLC thin films.",
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AU - Kawasaki, Manabu

AU - Yang, Huai

AU - Kikuchi, Hirotsugu

AU - Kajiyama, Tisato

PY - 2002/12/1

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N2 - A side-chain type ferroelectric liquid crystalline polymer (FLCP) was mixed with a low-molecular-weight ferroelectric liquid crystal (LMWFLC) to improve the light switching contrast for the transient light-scattering mode (TSM). Optical transmittance through an optically homogeneous chiral smectic C phase in a FLCP/LMWFLC composite system was observed by a polarizing optical microscope. The transmittance of the transparent state of the composite system upon the application of an a.c. electric field was almost the same in comparison with that of LMWFLC. On the other hand, the light-scattering intensity for the composite system upon the application of an a.c. electric field was somewhat stronger than that for LMWFLC. The enhancing mechanism of the transient light scattering induced by an addition of FLCP to LMWFLC has been discussed through the light switching measurements for free-standing FLC thin films.

AB - A side-chain type ferroelectric liquid crystalline polymer (FLCP) was mixed with a low-molecular-weight ferroelectric liquid crystal (LMWFLC) to improve the light switching contrast for the transient light-scattering mode (TSM). Optical transmittance through an optically homogeneous chiral smectic C phase in a FLCP/LMWFLC composite system was observed by a polarizing optical microscope. The transmittance of the transparent state of the composite system upon the application of an a.c. electric field was almost the same in comparison with that of LMWFLC. On the other hand, the light-scattering intensity for the composite system upon the application of an a.c. electric field was somewhat stronger than that for LMWFLC. The enhancing mechanism of the transient light scattering induced by an addition of FLCP to LMWFLC has been discussed through the light switching measurements for free-standing FLC thin films.

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