Korean researchers have developed high-transparency LED lights inspired by fireflies

Recently, researchers at the Korea Advanced Science and Technology Research Center conducted a study on the belly of fireflies using a scanning electron microscope. They found that the part of the lantern that glows on the belly of the firefly is made up of three layers, which have obvious similarities with the LED bulb. A standard LED bulb consists of a reflector cup and a lens-clamped source. Similarly, a firefly lantern consists of a reflective layer, a luminescent layer and a stratum corneum or a carapace covered with fine folds. Compared to the remaining part of the shell of the firefly, the folds of the light transmitted by the firefly's abdomen are quite neat and orderly.

Researchers have developed a lens for LED lights that resembles the small folds covered by fireflies' "lanterns." This lens allows 98% of the light to pass through it, which is better than a conventional light bulb and this improvement is similar to applying an expensive anti-reflective coat to the bulb.

The researchers found that the folds helped the fireflies' special light wavelengths pass through the firefly lanterns more efficiently, so they tried to etch a similar pattern with plastic. The results show that creating a similar pattern on an LED bulb can transmit more light. Researchers say the technology can be used to enhance the light of camera phones, flashlights, headlights and even home lighting.

The researchers used nano-etching to package the bulb into a honeycomb shape rather than a long fold like a firefly. But like a real firefly, this pattern seems to be most effective when the light is 560 nanometers in length or similar to the yellow-green light of fireflies.

Researchers say this does not mean that we will all carry the lights of firefly colors. This nanostructure can be modified to enhance different wavelengths, which are very sensitive to the shape of the nanostructures, which can be optimized for a particular wavelength of light.

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