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Jarrod Reedie A team of engineers at Indiana’s Purdue University have created an “ultra-white” paint that is capable of reflecting up to 98.1% of sunlight, that could potentially negate the need for air conditioning and even reduce carbon emissions if used on a mass scale. Developed as part of a six-year project, the researchers say that if the paint covered a 93sqm roof area it would be able to create a cooling power to ten kilowatts, far more powerful than domestic air conditioners.  The paint is made with a chemical compound called barium sulfate, that is used within cosmetics and photo paper to make them white. The barium sulfate particles are made up of different sizes which scatter sunrays and are able to cool immediate surrounding surfaces. The size of the particle determines how much light it scatters, so a wider range of particle sizes allows the paint to scatter more of the light spectrum from the sun.

Xiangyu liRayw herrickMassachusetts institute of technologyPurdue research foundation office of technology commercializationBirck nanotechnology centerTechnologies research center at purdue universityIndiana purdue universityOffice of scientific researchPurdue universityMassachusetts institutePurdue research foundation officeCooling technologies research centerAir force officeமாசசூசெட்ஸ் நிறுவனம் ஆஃப் தொழில்நுட்பம்பர்‌ட்யூ ஆராய்ச்சி அடித்தளம் அலுவலகம் ஆஃப் தொழில்நுட்பம் வணிகமயமாக்கல்பிர்க் நானோ தொழில்நுட்பம் மையம்