Large Electroclinic Effect and Associated Properties of Chiral Smectic a Liquid Crystals

Shashidhar, R.; Naciri, Jawad; Ratna, Banahalli R.

doi:10.1002/9780470141724.ch2

Cited by 9 publications

(2 citation statements)

References 46 publications

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“…The switching time also shows a dependence on E such that it monotonically decreases with increasing field strength. It has been previously demonstrated that the presence of a Sm-A * −Sm-C * transition is not a necessary condition for the electroclinic effect [9,10]. This holds true for the θ and τ response of the monomeric mixture used in the current study (see supplementary material, [11]).…”

supporting

confidence: 62%

Critical Field Strength in an Electroclinic Liquid Crystal Elastomer

Spillmann

Kapur²,

Bentrem³

et al. 2010

Phys. Rev. Lett.

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We elucidate the polymer dynamics of a liquid crystal elastomer based on the time-dependent response of the pendent liquid crystal mesogens. The molecular tilt and switching time of mesogens are analyzed as a function of temperature and cross-linking density upon application of an electric field. We observe an unexpected maximum in the switching time of the liquid crystal mesogens at intermediate field strength. Analysis of the molecular tilt over multiple time regimes correlates the maximum response time with a transition to entangled polymer dynamics at a critical field strength.

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supporting

confidence: 62%

Critical Field Strength in an Electroclinic Liquid Crystal Elastomer

Spillmann

Kapur²,

Bentrem³

et al. 2010

Phys. Rev. Lett.

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“…Chiral liquid crystals have attracted considerable interest due to their helical supramolecular structure leading to excellent properties such as unique optical properties, thermochromism and ferroelectricity as well as their potential application in electrooptical devices . The chirality can be introduced into different positions of LC molecules and is usually located in the terminal position of the mesogenic core.…”

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confidence: 99%

Dielectric Parameters of a Benzoate‐Based Chiral Rod‐Like Liquid Crystal

Özerol

Ocak

2019

ChemistrySelect

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In this study, the mesomorphic properties and dielectric parameters of a benzoate-based chiral rod-like liquid crystal 4-[4-(S)-3,7-Dimethyloctyloxybenzoyloxy]benzoic acid (DMOBB) were investigated. The rod-like liquid crystal with (S)-3,7-Dimethyloctyloxy chiral moiety exhibits enantiotropically chiral nematic (N*) phase and a wide-temperature chiral tilted smectic phase (SmC*) which is of a great interest due to broad application prospects. Dielectric Parameters of DMOBB chiral liquid crystal have been characterized by impedance spectroscopy in the frequency range between 1 Hz and 10 MHz at range of between 25°C and 200°C. In difference to the earlier works, this study provides a detailed investigation of the dielectric parameters of benzoate-based chiral rod-like liquid crystal.[a] Dr.

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