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Magnetic field induced orientational bistability in a ferronematic cell

Magnetic field induced orientational bistability in a ferronematic cell
Magnetic field induced orientational bistability in a ferronematic cell
The equilibrium states of a suspension of single-domain ferroparticles in a nematic liquid-crystalline homeotropic cell subject to an external magnetic field are studied. We predict the existence of magnetic field induced orientational bistability in such a system in a magnetic field ?102 Oe. The existence of the bistability phenomenon is governed by conditions on the cell thickness and on the director anchoring energy. The effect can be controlled using a small bias magnetic field normal to the unperturbed director. The director reorientation in a magnetic field causes an effective change in refraction index, which enables the orientational bistability to be exploited in optical devices.
525-534
Burylov, S.V.
0d387dae-1dd0-4df4-9e86-b323fcd1d657
Zadorozhnii, V.I.
7d2e7c5a-b52c-4dd1-a7fe-cd8b708cd2ab
Pinkevich, I.P.
3bc6385f-a71b-419c-9996-0cc566e9b687
Reshetnyak, V.Yu.
1443c2dd-2066-4dd6-ae18-f3b408dea98d
Sluckin, T.J.
8dbb6b08-7034-4ae2-aa65-6b80072202f6
Burylov, S.V.
0d387dae-1dd0-4df4-9e86-b323fcd1d657
Zadorozhnii, V.I.
7d2e7c5a-b52c-4dd1-a7fe-cd8b708cd2ab
Pinkevich, I.P.
3bc6385f-a71b-419c-9996-0cc566e9b687
Reshetnyak, V.Yu.
1443c2dd-2066-4dd6-ae18-f3b408dea98d
Sluckin, T.J.
8dbb6b08-7034-4ae2-aa65-6b80072202f6

Burylov, S.V., Zadorozhnii, V.I., Pinkevich, I.P., Reshetnyak, V.Yu. and Sluckin, T.J. (2002) Magnetic field induced orientational bistability in a ferronematic cell. Molecular Crystals Liquid Crystals, 375, 525-534. (doi:10.1080/10587250210569).

Record type: Article

Abstract

The equilibrium states of a suspension of single-domain ferroparticles in a nematic liquid-crystalline homeotropic cell subject to an external magnetic field are studied. We predict the existence of magnetic field induced orientational bistability in such a system in a magnetic field ?102 Oe. The existence of the bistability phenomenon is governed by conditions on the cell thickness and on the director anchoring energy. The effect can be controlled using a small bias magnetic field normal to the unperturbed director. The director reorientation in a magnetic field causes an effective change in refraction index, which enables the orientational bistability to be exploited in optical devices.

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Published date: 2002

Identifiers

Local EPrints ID: 39260
URI: http://eprints.soton.ac.uk/id/eprint/39260
PURE UUID: 7d08a5a9-1ed3-4715-b2f5-33e9390ffea6
ORCID for T.J. Sluckin: ORCID iD orcid.org/0000-0002-9163-0061

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Date deposited: 26 Jun 2006
Last modified: 18 Feb 2021 16:31

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