NTU researchers develop long-lasting anti-fog coating that 'self-cleans' under sunlight

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NTU researches develop long-lasting anti-fog coating that 'self-cleans' under sunlight

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In a news release on Tuesday , the university said the new coating overcomes the current limitations of anti-fog sprays and wipes, which are temporary as they cannot withstand washing and must be reapplied regularly.

Fogging happens when tiny water droplets form on surfaces due to condensation, which then scatter light and reduce visibility. Titanium dioxide also gives the coating its ability to self-clean, by reacting with ultraviolet light to break down organic residues. Using applications on spectacles as an example, Prof Chen said: “If you properly use it, I would guess we’re talking about years — one year, two years and so on. But of course if you abuse it, nobody can help.”

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