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 ...