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Microfluidic Preparation of Liquid Crystalline Elastomer Actuators
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Welding complex-shaped actuators from dynamic liquid crystal elastomers.

Jie Jiang1, Hongshuang Guo1, Hao Zeng1

  • 1Smart Photonic Materials, Faculty of Engineering and Natural Sciences, Tampere University P.O. Box 541 Tampere FI-33101 Finland Hongshuang.Guo@tuni.fi Arri.Priimagi@tuni.fi.

Journal of Materials Chemistry. C
|June 9, 2025
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Summary
This summary is machine-generated.

Researchers developed a new welding technique for liquid crystal elastomers (LCEs) to create complex soft actuators. This method allows for controlled shape transformations and preserves material properties for advanced soft robotics.

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Area of Science:

  • Materials Science
  • Polymer Science
  • Robotics

Background:

  • Liquid crystal elastomers (LCEs) are advanced materials with unique stimuli-responsive properties, making them ideal for soft actuators and soft robotic systems.
  • Current fabrication methods for complex-shaped LCE actuators with precise shape-morphing capabilities are limited.
  • Achieving controlled shape transformations in multicomponent LCEs while maintaining individual component functions is a significant challenge.

Purpose of the Study:

  • To present a novel welding-based strategy for fabricating light-responsive, multicomponent LCE actuators.
  • To enable complex shape morphing in LCE actuators by integrating differently oriented LCE segments.
  • To establish a versatile platform for creating weldable, arbitrarily aligned, and complex-shaped LCE actuators.

Main Methods:

  • A welding strategy utilizing dynamic disulfide bonds was employed for fabricating LCE actuators.
  • The dynamic disulfide bonds were incorporated into surface-aligned, chain-extended LCEs.
  • This method ensures robust adhesion between LCE segments without disrupting molecular orientation during the welding process.

Main Results:

  • The developed welding technique successfully produced light-responsive, multicomponent LCEs with complex shape morphing capabilities.
  • The distinct functional responses of individual LCE components were preserved after welding.
  • The resulting LCE actuators seamlessly integrated differently oriented LCE segments, demonstrating diverse shape-morphing abilities.

Conclusions:

  • The welding-based strategy offers a robust method for fabricating complex-shaped LCE actuators.
  • This approach enables precise control over shape transformations in multicomponent LCE systems.
  • The developed platform facilitates the creation of versatile, weldable LCE actuators for advanced soft robotics applications.