Related Experiment Video
Updated: Jul 13, 2025
07:56
Preparation of Liquid Crystal Networks for Macroscopic Oscillatory Motion Induced by Light
Published on: September 20, 2017
11.7K
Electrically driven kinklike distorting waves in microsized liquid crystals
S S Kharlamov1, D V Shmeliova1, S V Pasechnik1
1Moscow Technological University (MIREA), Moscow 119454, Russia.
Physical Review. E
|October 18, 2023
Summary
Researchers visualized electrically driven kinklike distortion waves in liquid crystal channels. A new mechanism converts electric fields into traveling waves when the field exceeds a threshold, stopping material flow.
Area of Science:
- Physics
- Materials Science
Background:
- Kinklike distortion waves are observed in liquid crystal (LC) channels.
- Understanding their excitation and evolution is crucial for LC device applications.
Purpose of the Study:
- To investigate electrically driven kinklike distortion regimes in a microsized LC channel.
- To visualize the excitation and evolution of these waves for the first time.
Main Methods:
- Experimental investigation of kinklike distortion waves.
- Analytical investigation using a nonlinear extension of the Ericksen-Leslie theory.
- High-speed camera recording of normalized light intensity evolution.
Main Results:
- Kinklike distortion waves were excited by the interaction between electric fields and director field gradients.
- The flow of liquid crystal material completely stops when the electric field exceeds a threshold (E >> E_th).
- A novel mechanism for electric field conversion via electrically driven distorting traveling kinklike waves was identified.
Conclusions:
- Electrically driven kinklike waves can be excited in homogeneously aligned liquid crystal (HALC) channels.
- This phenomenon offers a new pathway for electric field manipulation in LC systems.
- The study provides the first visualization of traveling wave excitation and evolution in such channels.
