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Updated: Sep 16, 2025
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Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
Published on: May 15, 2017
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A Dynamic Analysis of Toron Formation in Chiral Nematic Liquid Crystals Using a Polarization Holographic Microscope
Tikhon V Reztsov1, Aleksey V Chernykh1, Tetiana Orlova2,3
1Research and Educational Center for Photonics and Optical IT, ITMO University, 3 Kadetskaya Liniya V.O., bld. 2, lit. A, Saint Petersburg 197101, Russia.
Polymers
|July 12, 2025
Summary
We explored the polarization and phase dynamics of torons in chiral nematic liquid crystals. Torons enable spin-orbit coupling of light, useful for vector beam shaping in photonic devices.
Area of Science:
- Physics
- Materials Science
- Optics
Background:
- Chiral nematic liquid crystals feature topological structures like torons with significant optical properties.
- Applications in photonic devices are emerging, but their formation dynamics are not well understood.
Purpose of the Study:
- Investigate the dynamic optical response and polarization transformation during toron formation.
- Explore the potential of torons for light manipulation and advanced photonic applications.
Main Methods:
- Generated torons using focused femtosecond infrared laser pulses.
- Employed a custom polarization holographic microscope for real-time data acquisition.
- Reconstructed the Jones matrix to analyze polarization changes.
Main Results:
- Successfully characterized the real-time polarization and phase dynamics of toron formation.
- Demonstrated that torons induce spin-orbit coupling of light.
- Showcased torons' analogy to q-plates for light manipulation.
Conclusions:
- Toron formation dynamics are now better understood.
- Torons offer a novel mechanism for spin-orbit coupling.
- These findings pave the way for advanced vector beam shaping and topological photonics.
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