Interfacial Alignment and Field‑Responsive Liquid Crystal Soft Materials: From Anchoring Design to Electro‑Optic Switching.

Interfacial phenomena play a decisive role in the structure and performance of liquid crystal (LC) soft materials, serving as the foundation for director alignment, defect landscapes, and field-induced responses. With the evolution of LC science towards complex architectures—such as blue phases, polymer-stabilized and dispersed systems, confined droplets, and nanocomposite liquid crystals—interfaces have shifted from passive boundaries to active elements that shape material behavior. Innovations in alignment technologies, including solution-processed oxides, sol–gel films, self-assembled monolayers, plasma or photo-assisted surfaces, and hierarchical topographies, now allow precise manipulation of anchoring energy, pretilt, and azimuthal orientation. This capacity is vital for the development of thin-film and confined LC systems with low-voltage operation, rapid switching, and adaptable functionality.This Research Topic seeks to advance our understanding of how interfacial alignment and anchoring engineering influence the field-responsive characteristics of LC soft matter, from molecular to macroscopic scales. We invite works that elucidate the interplay between surface treatments, nanostructure/microstructure, and resulting anchoring properties—including strength, pretilt, orientation, and ionic effects—and quantify their impact on device-level outcomes such as threshold voltage, dynamic response, optical contrast, and operational reliability. Emphasis is placed on integration of experimental, theoretical, and computational approaches, especially those combining synthesis and processing with continuum modeling, simulation, and data-driven analysis. The goal is to develop design principles for soft materials whose alignment and field response are systematically tuned for next-generation photonics, We welcome submissions as Original Research, Methods, Mini-Review, Review, and Perspective articles. Contributions should address LC alignment and field-responsive switching in thin films, confined geometries, and device structures.Relevant research themes include:- Design and application of polymeric and non-polymeric alignment layers (e.g., polyimide, oxide/sol-gel films, self-assembled monolayers)- Development and characterization of nanoenabled or hybrid alignment surfaces (including nanoparticles, graphene-based, and other functional additives)- Mechanical, plasma, UV/ozone, wrinkled, hierarchical, nanostructured, and photoinduced alignment techniques- Advanced interfacial characterization and quantitative measurement of anchoring, pretilt, and defect landscapes- Modeling, theory, and simulations bridging interface design to LC switching dynamics (e.g., continuum modeling, finite-element, and data-driven approaches)- Field-responsive LC systems such as blue phase LCs, polymer-dispersed LCs, microemulsions, reactive mesogens, ferromagnetic or negative dielectric anisotropy LCs, and photo- or nanoparticle-tunable composites Topic editors: Hong-Gyu Park, Ramesh Manda, Ingo Dierking Source: https://www.frontiersin.org/research-topics/78809/interfacial-alignment-and-field-responsive-liquid-crystal-soft-materials-from-anchoring-design-to-electro-optic-switching