.png){kind=icon}
.png){kind=icon}
Return
Electrically Tunable Heliconical Smectic Superstructure in Polar Fluids
.png){kind=icon}
OA
AI
DOI：10.1002/adma.74025.png)
.png){kind=icon}
.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
The ferroelectric nematic (NF) phase and related polar liquid-crystalline phases form a new class of strongly polarized yet fluid soft matter. Well-recognized heliconical ferroelectric phases such as NTBF and SmC P H ${\mathrm{SmC}}_{\mathrm{P}}^{\mathrm{H}}$ exist, but their electro-optic functionality in smectic systems has been largely unexplored. In this study, we report a newly designed single-component achiral molecule exhibiting a hierarchical polar phase sequence: SmAF–NTBF–HEC– SmC P H ${\mathrm{SmC}}_{\mathrm{P}}^{\mathrm{H}}$ . The key feature of the SmC P H ${\mathrm{SmC}}_{\mathrm{P}}^{\mathrm{H}}$ phase is its ability to form a stable macroscopic orientation without any alignment layers and to enable continuous, reversible pitch modulation over a wide spectral range at ultralow electric fields, approximately one-third of those required for conventional heliconical nematics. The system exhibits characteristic electro-optic properties in the sub-kilohertz range, differentiating it from heliconical materials controlled by dielectric–elastic balance at higher frequencies. In addition, the SmC P H ${\mathrm{SmC}}_{\mathrm{P}}^{\mathrm{H}}$ phase's polar heliconical smectic structure facilitates enhanced second-harmonic generation via favorable phase matching, thereby establishing a simple and robust platform for low-voltage photonic applications.
Keywords:
heliconical
helielectric
polar fluid
reflective color
SHG
AI Summary
Key information extracted from the uploaded paper, including a brief overview, abstract, background, key highlights, visual analysis, and future outlook.
Journal
IF:
26.8
Papers:
3.4W
Citations:
46.0W
View more organizations