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A new study shows that sapphire, the second most durable gemstone after diamond, could be the key to developing the best anti-glare, anti-fogging, dust-resistant, scratch-free surfaces.

A sample of the sapphire. Credit: The University of Texas at Austin. Imagine a phone screen that never gets scratched, glasses that don’t glare, or a car windshield that stays clear of dust and fog.

While not quite as scratch-resistant as traditional bulk sapphire -- the nanostructures are comparable to tungsten or traditional glass in that way -- these new sapphire nanostructures repel fog, dust ...

While not quite as scratch-resistant as traditional bulk sapphire – the nanostructures are comparable to tungsten or traditional glass in that way – these new sapphire nanostructures repel fog, dust ...

More information: Kun-Chieh Chien et al, Scratch-resistant sapphire nanostructures with anti-glare, anti-fogging, and anti-dust properties, Materials Horizons (2025). DOI: 10.1039/D4MH01844C ...

dust and glare with self-cleaning capabilities. "This is very exciting since nanostructures are traditionally seen as being fragile, but making them in sapphire can solve this problem," said Kun ...