Cooling Fibre with Selective Near-Infrared and Visible Light Reflection

Abstract/Technology Overview

This novel synthetic fibre reflects near-infrared (NIR) and visible light from the sun and allows the human body to release far-infrared (FIR), achieving outstanding cooling effects under solar radiation. Inspired by Salty Ice Plant, a natural plant which holds salt crystals on the surface of leaves and stems and reflects sunlight to cool itself, we use bicomponent melt spinning to deposit nano-sized ceramic crystals inside synthetic fibres.

Textiles made from these fibres reflect sunlight while allowing the body to release heat freely. In addition, these textiles can block most of the UV light by absorption. They provide excellent cool feeling in the sunshine, which is especially helpful to workers in open places and residents in tropical areas.

Technology Features, Specifications and Advantages

  • Durable bicomponent filaments with ceramic particles inside
  • Able to reflect NIR and visible light selectively without preventing body heat release
  • Effective UV absorption with sun protection
  • Long-lasting cooling effect without heat accumulation
  • Able to reduce 2 – 4°C, around 20% of NIR and 30% of UV, under intense sunlight
  • Low in material cost and feasible to be spun with existing equipment

Potential Applications

  • Apparels for outdoor recreational and sporting activities, as the heat shielding function can improve wearer’s comfort
  • Protective garments for residents in tropical areas where sunlight is intense
  • Protective uniforms for outdoor workers who are subjected to long-hours of exposure to the sun and the risk of heat stroke
  • General sun-shielding products, such as tents, canopies, curtains, sunshades and vehicle covers

Contact Person

Macy Huen


International Strategic Technology Alliance (ISTA)

Technology Category
  • Ceramics
  • Nano Materials
  • Polymers
  • Wellness & Spa
Technology Readiness Level
  • TRL 6

Cooling fibre, near-infrared light, selective reflection