NUS Innovates Self-Healing, Light-Emitting Robotic Fibres with Magnetic Properties for Smart Textiles and Robotics
Researchers at the National University of Singapore (NUS) have introduced a new innovative flexible fiber called the Scalable Hydrogel-clad Ionotronic Nickel-core Electroluminescent (SHINE) fiber. This fiber is characterized by its self-healing, light-emitting, and magnetic properties, which could enhance interactions between humans and robots in a variety of applications, particularly within smart textiles and robotics.
Features of the SHINE Fiber
The SHINE fiber is designed to be flexible, capable of emitting bright light, and features a self-repairing mechanism that enables it to restore nearly 100% of its original brightness after damage. It also supports wireless power and can be manipulated using magnetic forces.
Significance of the Research
According to Associate Professor Benjamin Tee, the lead researcher, the development of sustainable materials that emit light is significant. He noted that the self-healing capability of the fiber is reminiscent of biological tissues, such as skin. This multifunctional fiber has the potential to be used in light-emitting applications for soft robotics and interactive displays.
Research Collaboration and Publication
This research project, in collaboration with the Institute for Health Innovation & Technology (iHealthtech) at NUS, was published in the journal *Nature Communications* on December 3, 2024.
Technical Specifications of SHINE Fiber
The SHINE fiber addresses limitations seen in current light-emitting fibers, which often face issues with fragility and multifunctionality. Its coaxial design features a nickel core for magnetic properties, a zinc sulfide layer for light emission, and a hydrogel electrode that improves transparency. The research team successfully produced fibers up to 5.5 meters long, which retained their functionality after nearly a year of exposure to open air.
Luminance and Self-Healing Capabilities
The SHINE fiber recorded a luminance of 1068 cd/m², exceeding the visibility threshold recommended for bright environments. The hydrogel layer can self-heal by reforming chemical bonds under ambient conditions, while the remaining components recover their structure and functionality through heat application. This self-repair feature allows the fiber to withstand mechanical stress following damage, which contributes to its sustainability.
Future Directions for Research
The magnetic actuation capability of the fiber permits manipulation with external magnets, facilitating its use as a light-emitting component in soft robotics. Future research will focus on enhancing the precision of magnetic actuation and investigating the integration of sensing capabilities within textiles made solely from SHINE fibers.
(Source: National University of Singapore)
