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Multi-Stimuli Dually-Responsive Intelligent Woven Structures with Local Programmability for Biomimetic Applications.

Runxin Xu1, Guanzheng Wu1,2, Mengmeng Jiang1

  • 1Key Laboratory of Eco-Textiles, Ministry of Education, Jiangnan University, Wuxi, 214122, P. R. China.

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Summary

Researchers developed a novel smart fabric that changes color and shape when heated or exposed to electricity. This multi-responsive material offers precise, low-voltage control for advanced applications.

Keywords:
biomimetic applicationdual-response effectelectrothermally induced fabricshape-color changing materialsthermochromic pigments

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Area of Science:

  • Materials Science
  • Smart Materials
  • Textile Engineering

Background:

  • Development of materials with multiple stimuli-responsive properties is crucial for advanced technological applications.
  • Existing smart materials often lack integrated color-changing and shape-memory functionalities or require high activation energy.

Purpose of the Study:

  • To engineer a novel electrothermally multi-responsive fabric exhibiting both color-changing and shape-memory effects.
  • To investigate the micro- and macro-scale design principles for controlling the dual-response behavior.
  • To demonstrate the fabric's potential in advanced applications through a biomimetic prototype.

Main Methods:

  • Fabrication of composite fibers using metallic yarns and polymeric/thermochromic microcapsules via melt-spinning.
  • Weaving the composite fibers into a smart fabric capable of dual-response to thermal and electrical stimuli.
  • Optimization of fiber microstructures and fabric macrostructures to achieve desired shape-memory and color-changing properties.

Main Results:

  • The smart fabric exhibits simultaneous color change and shape recovery upon heating or electrical stimulation.
  • Achieved high shape fixity (99.95%) and recovery (79.2%) ratios.
  • Demonstrated low-voltage (5 V) activation for electrical response and precise local area activation through macro-scale design.

Conclusions:

  • The developed smart fabric integrates color-changing and shape-memory functionalities, activated by low voltage and precise electrical control.
  • The study highlights the importance of micro- and macro-scale design in achieving multi-stimuli-responsive materials.
  • Successful fabrication of a biomimetic dragonfly prototype showcases the broad potential of this groundbreaking smart material.