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

Research output: Contribution to journalArticle

1 Citation (Scopus)

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 languageEnglish
JournalMolecular Crystals and Liquid Crystals
Volume436
DOIs
Publication statusPublished - 2005

Fingerprint

Liquid Crystals
Electrooptical effects
Liquid crystals
electro-optics
liquid crystals
cells
Optics
optics
propagation
Temperature
temperature

Keywords

  • Bi-mesogen
  • Ferroelectric cell
  • Stripe-switching

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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

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AU - George, A. K.

AU - Al-Hassani, B.

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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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