Researchers make better heat sensor based on butterfly wings

(PhysOrg.com) — Scientists have long known that butterfly wings produce their iridescent colors by bouncing light around and between tiny ridges in structures made of chitin. More recently they’ve discovered that the chitin material in their wings also expands when struck by infrared radiation which causes a change in its refraction index, converting it to visible light. Now, by adding a layer of carbon nanotubes to the wing material, the researchers have found they are able to increase the amount of heat absorbed.

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Researchers make better heat sensor based on butterfly wings