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Nanomaterials Introduced the Very First Material that can keep us Cool

By Parul Gupta September 7, 2016

Using nanomaterials in the textile industry is a conventional sort of commercial applications of nanotechnology. Nanomaterials have offered us with stain resistant materials and allowed an assortment of wearable electronics to happen. But, there is one issue in clothing that still needs to be solved, and that is keeping us cool in hot, summer weather.
 
 
Now a study at Stanford University has used a nanomaterial known as nanoporous polyethylene or nanoPE and experiment it to identify how it could tackle the limitation of preparing a material that can keep us cool. The results disclosed that it might be much more effectual at making us feel cool than any other sort of natural or synthetic fabrics. The primary reason due to which clothing has still failed to provide relief from the heat is that our bodies release heat in sort of mid-infrared radiation (IR), and our attires obstruct that wavelength from absconding. While this creates clothing a precise benefit when it is cold, in pleasing weather it is a distinct disadvantage.
 
According to the research, it has been revealed that the interconnected pores of the material based on nanoPE enabled 96% of the infrared heat to move through it, allowing cotton to escape only 1.6% of the IR. The scientists of Stanford – headed by Yi Cui who has listed a wide body of work in obtaining nanomaterials to enhance the performance of batteries – asserted that this capability to allow IR to pass through would help the person wearing the fabric feel approximately 4 degrees Fahrenheit cooler than if they were wearing cotton fabric.
 
The nanoPE substance is enabled to accomplish this release of the IR heat due to the size of the pores that are interconnected. The size of pores can vary from 50 to 1000 nanometres. They are hence comparable in size to wavelengths of light that are visible that enables the substance to scatter the light. However, since the pores are much tinier that the wavelength of infrared light, the nanoPE material is transparent to the IR.
 
The researchers of Stanford were also able to enhance the water wicking efficiency of the nanoPE material by utilizing a microneedle punching functionality and layering the material with a water-repelling substance. As a result, the perspiration can heat up through the substance unlike with regular polyethylene.
 
“If you can offer coolness to the person rather than the building where they live or work, then it could save an intense amount of energy,” says Cui.
 
The studies with the substance were conducted on a gadget that copies the heat output of human layer that seems conspicuously non-human. Anyone that has analysed the utilization of nanomaterials in the textile industry will inform you that the problem raised by manufacturers about any novel substance is the ‘hand of fabric’ or how does it seem to our touch.
 
In a continuation of the study, the Stanford group will be offering the substance enhanced textures and material-like elements. If they can combat that trouble, the next will be preparing the substance cost-effectively in bulk production.

Filed Under: News

 

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