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Liquid crystals under the spotlight: light based measurements of electrical and flow properties of liquid crystals

Liquid crystals under the spotlight: light based measurements of electrical and flow properties of liquid crystals
Liquid crystals under the spotlight: light based measurements of electrical and flow properties of liquid crystals
Optical light modulation in photorefractive liquid crystal cells depends strongly on the relative voltage drop across the photoconductive and liquid crystal layers. This quantity can be estimated using the Voltage Transfer Function, a generalization of the standard cross polarized intensity measurements. Another advantage of this new measurement technique is that we can use it to estimate dynamical parameters of the liquid crystal and of the device, either through simple black-box models or using a full Ericksen-Leslie theory. In this latter case we can obtain estimates of some of the viscosities of the liquid crystal.
liquid crystals, photorefractive liquid crystals, optical light modulators, liquid crystal viscosity, liquid crystal cells
0277-786X
1-6
Bennett, Thomas P.
149b33f3-d18f-4a77-bee1-7575951ac8c6
Proctor, Matthew
e2587944-ff00-4a72-bed0-9547b62f95aa
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
D'Alessandro, Giampaolo
bad097e1-9506-4b6e-aa56-3e67a526e83b
Bennett, Thomas P.
149b33f3-d18f-4a77-bee1-7575951ac8c6
Proctor, Matthew
e2587944-ff00-4a72-bed0-9547b62f95aa
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
D'Alessandro, Giampaolo
bad097e1-9506-4b6e-aa56-3e67a526e83b

Bennett, Thomas P., Proctor, Matthew, Kaczmarek, Malgosia and D'Alessandro, Giampaolo (2015) Liquid crystals under the spotlight: light based measurements of electrical and flow properties of liquid crystals. Proceedings of SPIE. 17th International Conference on Optical Fibre Sensors, 9565, 1-6. (doi:10.1117/12.2187086).

Record type: Article

Abstract

Optical light modulation in photorefractive liquid crystal cells depends strongly on the relative voltage drop across the photoconductive and liquid crystal layers. This quantity can be estimated using the Voltage Transfer Function, a generalization of the standard cross polarized intensity measurements. Another advantage of this new measurement technique is that we can use it to estimate dynamical parameters of the liquid crystal and of the device, either through simple black-box models or using a full Ericksen-Leslie theory. In this latter case we can obtain estimates of some of the viscosities of the liquid crystal.

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More information

e-pub ahead of print date: 9 August 2015
Published date: 5 September 2015
Keywords: liquid crystals, photorefractive liquid crystals, optical light modulators, liquid crystal viscosity, liquid crystal cells
Organisations: Quantum, Light & Matter Group, Applied Mathematics

Identifiers

Local EPrints ID: 384925
URI: https://eprints.soton.ac.uk/id/eprint/384925
ISSN: 0277-786X
PURE UUID: 7b66baa6-e977-46b1-a6ec-a60f2f0100bf
ORCID for Giampaolo D'Alessandro: ORCID iD orcid.org/0000-0001-9166-9356

Catalogue record

Date deposited: 14 Jan 2016 09:48
Last modified: 06 Jun 2018 13:05

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