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Cross sectioning insects in an electron microscope with a femtosecond laser [video]

Hacker News Top · 2026-07-20 Cached

Integrate a femtosecond laser into a scanning electron microscope, use a side beam to cut carbonized insects, and image layer by layer to reveal internal structures; although not fully reaching the cold ablation state, clear cross-sectional images can already be obtained.

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#femtosecond-laser

New method turns ocean water into drinking water, without waste

Hacker News Top · 2026-06-05 Cached

Researchers at the University of Rochester developed a solar-thermal desalination method using laser-etched black metal that efficiently produces fresh water without chemical additives and transforms leftover salts into useful materials, avoiding brine waste.

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New solar desalination breakthrough makes fresh water without toxic brine

Hacker News Top · 2026-05-31 Cached

Researchers at the University of Rochester have developed a solar-powered desalination system using femtosecond laser-textured black metal that efficiently produces fresh water from seawater without generating toxic brine waste, addressing key environmental and operational challenges.

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