ArticleProceedings of the National Academy of Sciences of the United States of America2021
Liquid-crystal-based topological photonics.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 30 citations in OpenAlex.
- Thermal Control of Concentric Topographies Patterned by Dynamic Electro-Templated Generated Chiral Solitonic Structures.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Moiré effect enables versatile design of topological defects in nematic liquid crystals.Nature communications · 2024Article
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Authors and funding
4 authors at 2 institutions in 2 countries.
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Abstract
Liquid crystals are complex fluids that allow exquisite control of light propagation thanks to their orientational order and optical anisotropy. Inspired by recent advances in liquid-crystal photo-patterning technology, we propose a soft-matter platform for assembling topological photonic materials that holds promise for protected unidirectional waveguides, sensors, and lasers. Crucial to our approach is to use spatial variations in the orientation of the nematic liquid-crystal molecules to emulate the time modulations needed in a so-called Floquet topological insulator. The varying orientation of the nematic director introduces a geometric phase that rotates the local optical axes. In conjunction with suitably designed structural properties, this geometric phase leads to the creation of topologically protected states of light. We propose and analyze in detail soft photonic realizations of two iconic topological systems: a Su-Schrieffer-Heeger chain and a Chern insulator. The use of soft building blocks potentially allows for reconfigurable systems that exploit the interplay between topological states of light and the underlying responsive medium.
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