Effect of the surface anchoring on the electro-optic response of Bi-mesogen organosiloxane liquid-crystal materials

C. Carboni; A. K. George; B. Al-Hassani

doi:10.1080/15421400590954786

Effect of the surface anchoring on the electro-optic response of Bi-mesogen organosiloxane liquid-crystal materials

C. Carboni^*, A. K. George, B. Al-Hassani

^*Corresponding author for this work

Physics

Research output: Contribution to journal › Article › peer-review

Abstract

The electro-optic response of a bi-mesogen organosiloxane liquid crystal material confined in a cell with strong surface anchoring is investigated. The specimen displays an increase in the apparent tilt of the optic axis as the temperature is increased and a mono-stable electro-optic response with different response times for switching on and switching off. The cell takes 5ms to be switched on and 200 μs to be switched off. A stripe-switching regime is observed at high field, with the rate of propagation of the stripes decreasing as the field is increased. A tentative interpretation of this unexpected behaviour is proposed.

Original language	English
Pages (from-to)	117/[1071]-126/[1080]
Journal	Molecular Crystals and Liquid Crystals
Volume	436
DOIs	https://doi.org/10.1080/15421400590954786
Publication status	Published - 2005

Keywords

Bi-mesogen
Ferroelectric cell
Stripe-switching

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1080/15421400590954786

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title = "Effect of the surface anchoring on the electro-optic response of Bi-mesogen organosiloxane liquid-crystal materials",

abstract = "The electro-optic response of a bi-mesogen organosiloxane liquid crystal material confined in a cell with strong surface anchoring is investigated. The specimen displays an increase in the apparent tilt of the optic axis as the temperature is increased and a mono-stable electro-optic response with different response times for switching on and switching off. The cell takes 5ms to be switched on and 200 μs to be switched off. A stripe-switching regime is observed at high field, with the rate of propagation of the stripes decreasing as the field is increased. A tentative interpretation of this unexpected behaviour is proposed.",

keywords = "Bi-mesogen, Ferroelectric cell, Stripe-switching",

author = "C. Carboni and George, {A. K.} and B. Al-Hassani",

note = "Funding Information: The authors acknowledge the financial support of Sultan Qaboos University, grant IG/SCI/04/18. The authors wish to thank Professor P Zugenmaier for providing the materials used for the present work and Dr J. Lagerwall for useful discussions during the ILCS conference.",

year = "2005",

doi = "10.1080/15421400590954786",

language = "English",

volume = "436",

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journal = "Molecular Crystals and Liquid Crystals",

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TY - JOUR

T1 - Effect of the surface anchoring on the electro-optic response of Bi-mesogen organosiloxane liquid-crystal materials

AU - Carboni, C.

AU - George, A. K.

AU - Al-Hassani, B.

N1 - Funding Information: The authors acknowledge the financial support of Sultan Qaboos University, grant IG/SCI/04/18. The authors wish to thank Professor P Zugenmaier for providing the materials used for the present work and Dr J. Lagerwall for useful discussions during the ILCS conference.

PY - 2005

Y1 - 2005

N2 - The electro-optic response of a bi-mesogen organosiloxane liquid crystal material confined in a cell with strong surface anchoring is investigated. The specimen displays an increase in the apparent tilt of the optic axis as the temperature is increased and a mono-stable electro-optic response with different response times for switching on and switching off. The cell takes 5ms to be switched on and 200 μs to be switched off. A stripe-switching regime is observed at high field, with the rate of propagation of the stripes decreasing as the field is increased. A tentative interpretation of this unexpected behaviour is proposed.

AB - The electro-optic response of a bi-mesogen organosiloxane liquid crystal material confined in a cell with strong surface anchoring is investigated. The specimen displays an increase in the apparent tilt of the optic axis as the temperature is increased and a mono-stable electro-optic response with different response times for switching on and switching off. The cell takes 5ms to be switched on and 200 μs to be switched off. A stripe-switching regime is observed at high field, with the rate of propagation of the stripes decreasing as the field is increased. A tentative interpretation of this unexpected behaviour is proposed.

KW - Bi-mesogen

KW - Ferroelectric cell

KW - Stripe-switching

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JO - Molecular Crystals and Liquid Crystals

JF - Molecular Crystals and Liquid Crystals

ER -

Effect of the surface anchoring on the electro-optic response of Bi-mesogen organosiloxane liquid-crystal materials

Abstract

Keywords

ASJC Scopus subject areas

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