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Light-controlled skyrmions and torons as reconfigurable particles
Optics Express
|November 6, 2019
Summary
Researchers used chiral liquid crystals to control topological solitons called skyrmions with light. This breakthrough enables dynamic manipulation of skyrmions for potential technological applications.
Area of Science:
- Condensed matter physics
- Soft matter physics
- Topological matter
Background:
- Topological solitons, like skyrmions, appear in diverse physical systems but are difficult to access experimentally.
- Chiral nematic liquid crystals naturally form twisted structures, offering a potential platform for studying skyrmions.
- Current methods for controlling skyrmion dynamics and scale in liquid crystals are limited.
Purpose of the Study:
- To investigate the use of light to control topological solitons (skyrmions) in chiral nematic liquid crystals.
- To explore the potential for dynamic control and technological applications of skyrmions.
Main Methods:
- Combined experimental studies with numerical modeling of chiral liquid crystals.
- Utilized optically controlled helical pitch to manipulate skyrmion properties.
- Employed low-intensity, unstructured light for control.
Main Results:
- Demonstrated that light can control the stability, dimensions, and interactions of skyrmions.
- Showcased light-induced spatial patterning and self-assembly of skyrmions.
- Achieved dynamic control over skyrmion behavior using light.
Conclusions:
- Low-intensity light offers a versatile tool for manipulating topological solitons in chiral liquid crystals.
- This approach overcomes limitations in dynamic control and opens avenues for technological applications of skyrmions.
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