High-tech yarn can be used to make luminous clothing
The Science and Technology Development Center of the Ministry of Education reported on October 30, 2007 that scientists from the University of Manchester have recently invented a high-tech textile yarn that is powered by batteries and can make clothing that glows in the dark. The yarn was invented by The William Lee Innovation Center (WLIC) in the School of Materials. The new material is expected to be used in clothing for cyclists, joggers and walkers.
Luminous objects currently in use—such as those used on emergency signs, bicycles, and highway maintenance workers—rely on external light sources to make them glow. They fail in low-light situations and require a light source like car headlights to be visible, which may be too late for the wearer.
WLIC’s new invention comes from electroluminescent yarn, which makes the wearer continuously visible and therefore contributes to safety. Electroluminescent yarn is a brand-new technology that emits light through battery power and is technically based on thin-film electroluminescence. In the middle of the yarn is a conductive core, and the outer layer is covered with electroluminescent ink – which emits light when electricity passes through it – and a transparent protective shell layer. There is also a layer of conductive yarn on the outside.
When the electroluminescent yarn is powered through the inverter, the electric field generated between the inner and outer conductors will cause the electroluminescent shell to glow. The glowing point is located at the contact point between the outer yarn and the inner yarn. One possible application for this technology is fabrics and road safety signs. Dr. Tilak Dias, head of WLIC, said: “Current electroluminescent yarns are less flexible than traditional yarns, but more flexible than optical fibers, so they can be used in fabrics to emit light. These yarns can be simply It is incorporated into the fabric and emits light when there is an electric current.”
He also said: “The luminescence of a single yarn is stronger than the luminescent yarn currently used in some highly visible areas. By using special textile By making more yarns per unit area, the brightness of electroluminescent yarns can be increased.”
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