Hyper-stable cholesteric heliconical architectures for monochromatic light separation

A hyper-stable cholesteric heliconical superstructure has been achieved at room temperature through a simple strategy of mixing liquid crystal dimers. This breakthrough, recently reported in Matter by Li and colleagues, demonstrates an unprecedented and practical optic system for monochromatic light filtering important for various fields. A hyper-stable cholesteric heliconical superstructure has been achieved at room temperature through a simple strategy of mixing liquid crystal dimers. This breakthrough, recently reported in Matter by Li and colleagues, demonstrates an unprecedented and practical optic system for monochromatic light filtering important for various fields. Hyper-stable field-stimulated soft cholesteric heliconical architecturesYuan et al.MatterAugust 18, 2023In BriefThrough meticulously designing the composition of liquid-crystal dimers, a hyper-stable cholesteric heliconical (CH) material system has been realized. Unlike existing material systems that quickly crystallize within a few hours, the proposed material system remains crystallization free for over 1 year. The resulting CH superstructure demonstrates dynamic and reversible modulation of the photonic band gap across a wide spectral range under electrical fields while possessing robust electro-optical performance even after long-term storage, opening up exciting avenues for advancing photonic engineering. Full-Text PDF