Variations in the charge-transport, nonlinear optical, and electro-optical properties of RM734 due to halogenation: a quantum mechanical study DOI
Manish Kumar,

Mirtunjai Mishra,

Devesh Kumar

et al.

New Journal of Chemistry, Journal Year: 2024, Volume and Issue: 48(30), P. 13566 - 13576

Published: Jan. 1, 2024

Due to their high anisotropic behavior, liquid crystals possess strong nonlinear optical properties.

Language: Английский

The Emergence of a Polar Nematic Phase: A Chemist's Insight into the Ferroelectric Nematic Phase DOI Creative Commons
Ewan Cruickshank

ChemPlusChem, Journal Year: 2024, Volume and Issue: 89(5)

Published: March 7, 2024

Abstract The discovery of a new polar nematic phase; the ferroelectric nematic, has generated great deal excitement in field liquid crystals. To date there have been around 150 materials reported exhibiting phase, general, following three key archetypal structures with these compounds known as RM734, DIO and UUQU‐4N. In this review, relationship between molecular structure stability N F , phase will be described from chemist's perspective. This look to highlight wide variety functionalities which incorporated into how changes influence transition temperatures mesophases present. appears stabilised particularly by reducing length terminal alkyl chains present adding fluorines laterally along backbone. review introduce background before then showing range exhibit describing their structure–property relationships therefore giving an up–to–date account literature for fascinating mesophase.

Language: Английский

Citations

23

Emergent Antiferroelectric Ordering and the Coupling of Liquid Crystalline and Polar Order DOI Creative Commons
Jordan Hobbs, Calum J. Gibb, Richard J. Mandle

et al.

Small Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 3, 2024

Polar liquid crystals possess 3D orientational order coupled with unidirectional electric polarity, yielding fluid ferroelectrics. Such polar phases are generated by rod‐like molecules large dipole moments. 2,5‐Disubstituted 1,3‐dioxane is commonly employed as a motif in said systems, and herein it shown to suffer from thermal instability consequence of equatorial‐trans axial‐trans isomerism at elevated temperatures. Isosteric building blocks utilized potential replacements for the unit, doing so new examples ferroelectric systems obtained. For binary mixtures certain composition, emergence antiferroelectric phase, finding not observed either parent molecules, observed. This study also reveals critical tipping point otherwise apolar systems. These results hint possibility uncovering highly ordered liquid‐crystalline delineate distinct transition mechanisms ordering.

Language: Английский

Citations

13

Polar order in a fluid like ferroelectric with a tilted lamellar structure – observation of a polar smectic C (SmCP) phase DOI Creative Commons
Jordan Hobbs, Calum J. Gibb, Damian Pociecha

et al.

Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 30, 2024

Abstract The discovery of fluid states matter with spontaneous bulk polar order is appreciated as a major in the fields soft and liquid crystals. Typically, this manifests superimposed atop conventional phase structures thus far limited to orthogonal types. Here we report family materials which exhibit previously unseen state conclude smectic C phase, so term it SmC P . polarisation over two orders magnitude larger than that found ferroelectric chiral used some LCD devices. Fully atomistic molecular dynamics simulations faithfully spontaneously reproduce proposed structure associated properties; comparison experimental simulated X‐ray scattering patterns shows excellent agreement. disclosed here have significantly smaller dipole moments typical crystals such RM734 suggests role electrical polarity generating perhaps overstated, view supported by consideration other systems.

Language: Английский

Citations

6

The role of fluorine substituents on the formation of the ferroelectric nematic phase DOI Creative Commons
Ewan Cruickshank, Rebecca Walker, Grant J. Strachan

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 20, 2024

We report on a series of materials which exhibit range nematic phases including the rare example single compound shows both enantiotropic N X and F phases.

Language: Английский

Citations

3

Calorimetric and optical investigation of the nematic, splay-nematic, and ferroelectric nematic phases of RM734 liquid crystal DOI Creative Commons
Marta Lavrič, Nerea Sebastián, Calum J. Gibb

et al.

Liquid Crystals, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 8

Published: March 19, 2025

Language: Английский

Citations

0

Research on Quantum Materials and Quantum Technology at RIKEN DOI Creative Commons
Koji Ishibashi,

Shinichi Yorozu,

T. Arima

et al.

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

RIKEN covers fundamental research on physics, chemistry, biology, life and medical science, information mathematical engineering. Here, we outline activities quantum materials technology that include topological correlated materials, spintronics, nanoscale structures, atomic optics, computing.

Language: Английский

Citations

0

Reviewing Ferroelectric Nematic Liquid Crystals: From Fundamental Properties to Cutting‐Edge Applications DOI
Raj Kumar Khan

Applied Research, Journal Year: 2025, Volume and Issue: 4(3)

Published: May 19, 2025

ABSTRACT Ferroelectric nematic (N F ) liquid crystals (LCs) have garnered substantial interest due to their unique polar ordering, phase transitions, and electro‐optic (E‐O) properties, with potential applications spanning from low‐power reflective displays advanced photonics microfluidics. This review explores the multifaceted nature of N LCs comprehensively analyzes behavior, alignment, surface interactions. Notable findings include (N)‐N transition's weak first‐order nature, treatments' role in inducing order, meron‐like structures resembling ferromagnetic domains. Furthermore, highlights tunability under electric fields, offering exciting possibilities for adaptive optics, sensors, actuators. Despite these advancements, challenges remain optimizing molecular controlling defects, expanding scalability LC technologies. By addressing key experimental theoretical studies, this aims present a deeper understanding crystals' E‐O responses, revolutionize future LC‐based

Language: Английский

Citations

0

The Influence of Methyl Groups on the Formation of the Ferroelectric Nematic Phase DOI Creative Commons
Ewan Cruickshank, Rebecca Walker, Magdalena Majewska

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: May 27, 2025

Language: Английский

Citations

0

Evaluation of polar alignment structure and surface anchoring energy in ferroelectric nematic liquid crystals by renormalized transmission spectroscopic ellipsometry DOI Creative Commons
Sakunosuke Abe,

Amon Nakagawa,

Yosei Shibata

et al.

Applied Physics Express, Journal Year: 2024, Volume and Issue: 17(3), P. 031001 - 031001

Published: Feb. 26, 2024

Abstract It is essential to estimate the surface polar anchoring energy in order discuss interfacial orientation of ferroelectric nematic liquid crystals. In this study, we accurately estimated twist angle a π -twist cell with an antiparallel rubbing manner, by means renormalized transmission spectroscopic ellipsometry, which has great deal experience measuring ordinary We also succeeded estimating reduced from equation derived simplified torque balance equation. assumed that on 10 2 .

Language: Английский

Citations

2

Sulfur-based ferroelectric nematic liquid crystals DOI
Yuki Arakawa,

Qiong Ning,

Karthick Subramani

et al.

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

We report a structure–property relationship in sulfur-based thermotropic ferroelectric nematic (N F ) materials.

Language: Английский

Citations

2