Physicists in the US have created metal surfaces that repel water to the extent that droplets bounce away.
They sculpted the surface of small pieces of platinum, titanium and brass using a very high-powered laser.
The materials “self-clean” because water droplets gather dust particles before they slide away.
If it can be scaled up, the technique could help produce hygienic, easily-maintained devices – from solar panels to toilets – that do no rust or ice up.
Hydrophobic Materials
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