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Electroluminescent soft elastomer actuators with adjustable luminance and strain.

Ye Rim Lee1, Jongyeop An1, Hyun Soo Kim1

  • 1Department of Mechanical Engineering, Korea University, Seoul 02841, Republic of Korea. blee@korea.ac.kr.

Soft Matter
|October 3, 2019
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Summary

Researchers developed a novel soft actuator with both light emission and movement capabilities. This breakthrough enhances human-machine interaction through advanced color displaying actuator technology.

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Area of Science:

  • Materials Science
  • Robotics
  • Optoelectronics

Background:

  • Developing multifunctional soft actuators is crucial for advanced human-machine interfaces.
  • Existing devices often excel in single functions like actuation or light emission, limiting integrated applications.

Purpose of the Study:

  • To create a single soft actuator exhibiting both electroluminescence (EL) and significant soft actuation.
  • To surpass the performance of previous devices that offered only individual functions.

Main Methods:

  • Engineered highly conductive, transparent, and stretchable electrodes.
  • Incorporated high-k nanoparticles to intensify the electric field for EL particles.
  • Utilized AC + DC composite signals for a simplified device structure.

Main Results:

  • Achieved a soft actuator with 85% strain for actuation.
  • Demonstrated electroluminescence with a maximum luminance of 300 cd m⁻².
  • The combined functionalities exceeded the performance of single-function devices.

Conclusions:

  • The developed multifunctional soft actuator integrates high-performance EL and actuation.
  • This innovation paves the way for novel soft devices enhancing human-machine interactions.
  • Future applications include color displaying actuators for improved user experiences.