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An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

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Flexible thermochromic fabrics enabling dynamic colored display.

Pan Li¹, Zhihui Sun¹, Rui Wang^1,2

¹Wuhan National Laboratory for Optoelectronics and Sport and Health Initiative, Optical Valley Laboratory, Huazhong University of Science and Technology, Wuhan, 430074, China.

Frontiers of Optoelectronics

|January 13, 2023

Summary

This summary is machine-generated.

Researchers developed scalable thermochromic fibers using wet spinning for smart textiles. These color-changing fibers offer stable, visible displays for intelligent wearable devices and dynamic QR code applications.

Keywords:

Fabric code Information interaction Thermochromic fibers Wet spinning

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Area of Science:

Materials Science
Textile Engineering
Nanotechnology

Background:

Intelligent wearable devices require advanced materials for functionalities like information display and human-machine interfaces.
Color-changeable fibers offer potential for dynamic visual outputs in smart textiles.
Existing methods for producing such fibers may lack scalability, cost-effectiveness, or stability.

Purpose of the Study:

To develop a low-cost, effective, and scalable method for producing thermochromic fibers.
To create flexible fibers with abundant and reversible color changes for diverse applications.
To demonstrate the practical utility of these thermochromic fibers in smart textiles and displays.

Main Methods:

Utilized wet spinning to fabricate thermochromic fibers.
Incorporated a combination of different thermochromic microcapsules into the fiber matrix.
Evaluated fiber properties including color change visibility, stability over thermal cycles, mechanical performance, and large-scale fabric integration.

Main Results:

Successfully produced flexible thermochromic fibers with abundant, reversible, and naked-eye observable color changes.
Demonstrated excellent color-changing stability, enduring over 8000 thermal cycles.
Confirmed large-scale fabricability and integration into various textiles with good mechanical properties.

Conclusions:

The developed wet spinning strategy provides a scalable and cost-effective route to advanced thermochromic fibers.
These fibers exhibit robust performance, making them suitable for dynamic colored displays and intelligent wearable applications.
The successful demonstration of dynamic QR code display validates the potential of these fibers in smart textiles and human-machine interfaces.