51动漫

Physics

Bunnies draped in fake polar bear fur are both cosy and stealthy

By Leah Crane

20 February 2018

New Scientist. Science news and long reads from expert journalists, covering developments in science, technology, health and the environment on the website and the magazine.

A bunny covered in fabric that mimics a polar bear’s fur

Ying Cui

It鈥檚 a bunny in bear鈥檚 clothing. By wrapping a rabbit up in a new textile inspired by polar bear hair, researchers have been able to keep all the animal鈥檚 body heat in, keeping it both cosy and invisible to infrared imaging.

The hollow interior structure of a polar bear鈥檚 fur helps the bears insulate themselves against harsh Arctic winters. Each hair is about 200 micrometre across, full of pores 15 to 20 micrometres wide. It is harder for heat to move through air…

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