Giant Electroviscous Effects in a Ferroelectric Nematic Liquid Crystal

Kumar, M. Praveen; Karcz, Jakub; Kula, Przemysław; Karmakar, Smarajit; Dhara, Surajit

doi:10.1103/physrevapplied.19.044082

Cited by 6 publications

(1 citation statement)

References 38 publications

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“…This journal is © The Royal Society of Chemistry 2023 Kumar et al have also employed a synthetic strategy in which the rings are installed in the reverse order. 30 The method presented by Kumar et al contains only three synthetic steps using a boronic ester as the protecting group (Fig. 2(c)).…”

Section: Resultsmentioning

confidence: 99%

New RM734-like fluid ferroelectrics enabled through a simplified protecting group free synthesis

Gibb,

Mandle

2023

J. Mater. Chem. C

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Section: Resultsmentioning

confidence: 99%

New RM734-like fluid ferroelectrics enabled through a simplified protecting group free synthesis

Gibb,

Mandle

2023

J. Mater. Chem. C

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Electrically activated ferroelectric nematic microrobots

Máthé,

Nishikawa,

Araoka

et al. 2024

Nat Commun

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Ferroelectric nematic liquid crystals are fluids exhibiting spontaneous electric polarization, which is coupled to their long range orientational order. Due to their inherent property of making bound and surface charges, the free surface of ferroelectric nematics becomes unstable in electric fields. Here we show that ferroelectric liquid bridges between two electrode plates undergo distinct interfacial instabilities. In a specific range of frequency and voltage, the ferroelectric fluid bridges move as active interacting particles resembling living organisms like swarming insects, microbes or microrobots. The motion is accompanied by sound emission, as a consequence of piezoelectricity and electrostriction. Statistical analysis of the active particles reveals that the movement can be controlled by the applied voltage, which implies the possible application of the system in new types of microfluidic devices.

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Dielectric anisotropy changes in MBBA liquid crystal doped with barium titanate by a new method

Beigmohammadi,

Khadem Sadigh,

Poursamad

2024

Sci Rep

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In response to the burgeoning interest in enhancing the properties of liquid crystal composites, this research systematically explores the intricate interplay between MBBA nematic liquid crystals and ferroelectric barium titanate nanoparticles. The focus is modulating dielectric properties under temperature, frequency, and an applied electric field. Nuanced insights into temperature-dependent behavior, parallel and perpendicular component alterations, and a nonlinear correlation between nanoparticle concentration and dielectric constant are revealed. The study delves into dielectric anisotropy, indicating a reduction with increasing temperature. Structural analyses validate size reduction and crystal phase maintenance of barium titanate nanoparticles (NPs), emphasizing their impact on dielectric characteristics. Frequency-dependent investigations underscore a consistent decline in permittivity with rising frequency across nanoparticle concentrations. Application of an electric field in filling process of liquid crystal cells reveals irregular changes in dielectric constant, holding promise for tailored applications in display technologies. These comprehensive findings offer valuable insights into manipulating dielectric anisotropy properties of MBBA liquid crystal by a simple method for potential advancements in optoelectronic devices and display technologies.

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Giant Electroviscous Effects in a Ferroelectric Nematic Liquid Crystal

Cited by 6 publications

References 38 publications

New RM734-like fluid ferroelectrics enabled through a simplified protecting group free synthesis

New RM734-like fluid ferroelectrics enabled through a simplified protecting group free synthesis

Electrically activated ferroelectric nematic microrobots

Dielectric anisotropy changes in MBBA liquid crystal doped with barium titanate by a new method

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