Water Automatically Leaps Off Lizard’s Self-Cleaning Skin

It started when Jolanta Watson put a frozen box-patterned gecko on a glass slide. The lizard’s skin is adorned with beautiful auburn and tan blotches, and Watson wanted to study it under a microscope. But as she reached for a scalpel, she noticed that tiny water droplets had formed on the slide. The longer she looked, the more droplets there were. Where were they coming from?

The microscope revealed the answer. Through its lens, Watson saw that droplets would condense on the gecko’s skin, roll into each other, and jump off under their own power. That’s why the slide was wet. The box-patterned gecko’s skin can actively repel ...

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