Ultrafast laser irradiation above a threshold intensity turns sapphire locally into an acid-etchable amorphous or polycrystalline form, enabling hierarchical nanostructures with rose-petal wetting and broadband diffuse transmittance.
Atomistic understanding of the variable nano-hardness of C-plane sapphire considering the crystal anisotropy,
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Fabrication of Hierarchical Sapphire Nanostructures using Ultrafast Laser Induced Morphology Change
Ultrafast laser irradiation above a threshold intensity turns sapphire locally into an acid-etchable amorphous or polycrystalline form, enabling hierarchical nanostructures with rose-petal wetting and broadband diffuse transmittance.