Reflective mode of deformed-helix ferroelectric liquid crystal cells for sensing applications

Zourab Brodzeli; Leonardo Silvestri; Andrew Michie; Qi Guo; Evgeny P. Pozhidaev; Vladimir Chigrinov; François Ladouceur

doi:10.1080/02678292.2013.807942

Reflective mode of deformed-helix ferroelectric liquid crystal cells for sensing applications

Zourab Brodzeli
, Leonardo Silvestri^*
, Andrew Michie
, Qi Guo
, Evgeny P. Pozhidaev
, Vladimir Chigrinov
, François Ladouceur

^*Corresponding author for this work

University of New South Wales
Australian Technology Park
Hong Kong University of Science and Technology
P.N. Lebedev Physical Institute of the Russian Academy of Sciences

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

33 Scopus citations

Abstract

We present a detailed theoretical and experimental study of the reflectance response of a deformed-helix ferroelectric (DHF) liquid crystal (LC) cell to an applied voltage under cross-polarisers. Using a model based on the effective dielectric tensor approximation, we derive simple analytical formulas to design a LC cell with maximum modulation depth and optimal linearity of the electro-optical response intensity versus the electric field. Our experimental results show that the cell works at frequencies up to 10 kHz and exhibits excellent linearity, with a total harmonic distortion as low as -70 dB. These findings suggest that DHF-LCs can be exploited to develop simple and accurate optical sensors.

Original language	English
Pages (from-to)	1427-1435
Number of pages	9
Journal	Liquid Crystals
Volume	40
Issue number	10
DOIs	https://doi.org/10.1080/02678292.2013.807942
State	Published - Oct 2013
Externally published	Yes

Keywords

effective dielectric tensor
ferroelectric liquid crystals
reflective mode
sensing

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10.1080/02678292.2013.807942

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title = "Reflective mode of deformed-helix ferroelectric liquid crystal cells for sensing applications",

abstract = "We present a detailed theoretical and experimental study of the reflectance response of a deformed-helix ferroelectric (DHF) liquid crystal (LC) cell to an applied voltage under cross-polarisers. Using a model based on the effective dielectric tensor approximation, we derive simple analytical formulas to design a LC cell with maximum modulation depth and optimal linearity of the electro-optical response intensity versus the electric field. Our experimental results show that the cell works at frequencies up to 10 kHz and exhibits excellent linearity, with a total harmonic distortion as low as -70 dB. These findings suggest that DHF-LCs can be exploited to develop simple and accurate optical sensors.",

keywords = "effective dielectric tensor, ferroelectric liquid crystals, reflective mode, sensing",

author = "Zourab Brodzeli and Leonardo Silvestri and Andrew Michie and Qi Guo and Pozhidaev, \{Evgeny P.\} and Vladimir Chigrinov and Fran{\c c}ois Ladouceur",

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T1 - Reflective mode of deformed-helix ferroelectric liquid crystal cells for sensing applications

AU - Brodzeli, Zourab

AU - Silvestri, Leonardo

AU - Michie, Andrew

AU - Guo, Qi

AU - Pozhidaev, Evgeny P.

AU - Chigrinov, Vladimir

AU - Ladouceur, François

PY - 2013/10

Y1 - 2013/10

N2 - We present a detailed theoretical and experimental study of the reflectance response of a deformed-helix ferroelectric (DHF) liquid crystal (LC) cell to an applied voltage under cross-polarisers. Using a model based on the effective dielectric tensor approximation, we derive simple analytical formulas to design a LC cell with maximum modulation depth and optimal linearity of the electro-optical response intensity versus the electric field. Our experimental results show that the cell works at frequencies up to 10 kHz and exhibits excellent linearity, with a total harmonic distortion as low as -70 dB. These findings suggest that DHF-LCs can be exploited to develop simple and accurate optical sensors.

AB - We present a detailed theoretical and experimental study of the reflectance response of a deformed-helix ferroelectric (DHF) liquid crystal (LC) cell to an applied voltage under cross-polarisers. Using a model based on the effective dielectric tensor approximation, we derive simple analytical formulas to design a LC cell with maximum modulation depth and optimal linearity of the electro-optical response intensity versus the electric field. Our experimental results show that the cell works at frequencies up to 10 kHz and exhibits excellent linearity, with a total harmonic distortion as low as -70 dB. These findings suggest that DHF-LCs can be exploited to develop simple and accurate optical sensors.

KW - effective dielectric tensor

KW - ferroelectric liquid crystals

KW - reflective mode

KW - sensing

UR - https://www.scopus.com/pages/publications/84888003534

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DO - 10.1080/02678292.2013.807942

M3 - 文章

AN - SCOPUS:84888003534

SN - 0267-8292

VL - 40

SP - 1427

EP - 1435

JO - Liquid Crystals

JF - Liquid Crystals

IS - 10

ER -

Reflective mode of deformed-helix ferroelectric liquid crystal cells for sensing applications

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Keywords

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