Julian Schwab

Lead author, University of Stuttgart

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Last updated Nov 9, 2026

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Silicon air-hole metasurface focuses ultraviolet light

New Capabilities

Researcher at the University of Stuttgart

Silicon absorbs ultraviolet light, which is why UV optics usually depend on curved mirrors made from other materials. A University of Stuttgart team etched tiny air-filled cavities into silicon and used them to focus 325-nanometer light on a flat surface.

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