Inspired by the wings of the moth, the scientist plans to design the wallpaper with sound insulation effect

Science Fiction Network June 16 (Wang Ziyu) Moth is a kind of insects who like to act in night and like to gather in the bright place. A thin layer of scales are attached to its wings and body. The colors and styles of these scales are very beautiful, like bird feathers. But recently, scientists have discovered another major role of moth wings. The wallpaper inspired by these scales can be used to block noise.

It is reported that some moths can avoid bats through the "silence" scales on the body. The bat is located in the dark to position the moth by emitting an ultrasonic call, which reflects from the body of the insect. Some moths can hear these calls and take them accordingly. But those deaf moths cannot effectively avoid the pursuit of bats. In order to avoid pursuit, these moths have evolved a special scales in wings and chests. This scales can absorb up to 85%of the transmission sound, making it difficult for bats to find these moths.

In order to test the "silence" scales, in addition to blocking bat bolts, it has the same effect on other noise. Scientists cut out a 8mm round sheet from the wings of the deaf Chinese silkworm moth, and then put the round sheet on the aluminum plate of the same size. When the speaker aims at the disk transmitting ultrasonic signal, the scientist found that the wings tissue absorbed Gundam Gundam. 87%of the sound. More importantly, this scale is very thin, and the thickness is only one -fifth of the sound wavelength it absorbed.

Scientists said they planned to develop an artificial version of the wing scales that can effectively absorb the noise heard by humans. Although the ultrasonic signal used in the experiment is higher than the range that humans can hear, in the future, an ultra -thin sound -absorbing wallpaper is likely to enter our lives.

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