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Updated: Jul 11, 2026
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Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
Published on: May 15, 2017
Freedericksz transition in an anticlinic liquid crystal
1Department of Physics, Case Western Reserve University, Cleveland, Ohio 44106, USA.
Summary
Surface-stabilized anticlinic liquid crystals show a two-step electric-field transition to the synclinic phase. This study details the Freedericksz transition and its temperature dependence, observing quenched fluctuations and solitary wave transitions.
Area of Science:
- Materials Science
- Condensed Matter Physics
- Liquid Crystal Physics
Background:
- Anticlinic liquid crystals exhibit unique phase behaviors under external stimuli.
- The Freedericksz transition is a fundamental phenomenon in liquid crystal physics.
- Understanding electric-field-induced transitions is crucial for display technologies and advanced materials.
Purpose of the Study:
- To experimentally investigate the electric-field-induced phase transitions in very-long-pitch, surface-stabilized, anticlinic liquid crystals.
- To characterize the Freedericksz transition and its dependence on temperature.
- To explore the behavior of acoustic Goldstone mode fluctuations and the high-field transition to the synclinic phase.
Main Methods:
- Utilizing the Freedericksz geometry for experimental analysis.
- Measuring the threshold electric field (E(th)) as a function of temperature.
- Employing quasielastic light scattering to study acoustic Goldstone mode fluctuations.
Main Results:
- A two-step electric-field-induced transition from the anticlinic to the synclinic phase was observed.
- The Freedericksz transition, involving unequal azimuthal rotations in smectic layers, was characterized.
- Acoustic Goldstone mode fluctuations were found to be quenched by a DC electric field above E(th).
- A transition to the synclinic phase via solitary waves was observed at high electric fields.
Conclusions:
- The study elucidates the complex electric-field-induced phase transitions in anticlinic liquid crystals.
- The findings provide insights into the fundamental physics governing these materials.
- This research contributes to the understanding of liquid crystal behavior for potential applications.
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