Stenciling: nature is well done. Further proof with this study of fireflies which allowed to see the LED lamps become more efficient. Another example of biomimicry.
Fireflies, Source of Inspiration For New LED Lamps
One of the problems about LED lamps is that their effectiveness is limited by the ability of light to escape from the lamp. Researchers have discovered that by changing LEDs using the abdomen of fireflies, the brightness of the light source could be increased. Indeed, the abdomen of the Photuris Firefly is covered with jagged scales. These help the insect to shine harder.
Imitate the Abdomen of Fireflies
A team of Belgian, french and Canadian researchers work on this idea. It would be one of these insects imitate the structure of abdomen “lantern” on a surface that is placed over an existing LED light, or a light-emitting diode. The amount of light emitted by the semiconductor would increase to 55%. Indeed, much of the light emitted by the LED is reflected at the bottom of the lamp. This effect is due to the fact that the light reacts differently through the materials composing the LEDs and the air. The efficiency of the LED is reduced.
LED and Firefly: Same Problem For Light
Through the abdomen of a Firefly, the light is facing conditions similar to what happens in an LED light. Nevertheless, the Firefly emits more light. The researchers therefore examined the microscopic structure of the abdomen of a Firefly found in the Panama. They checked that the exoskeleton of this region of the body allows to let through more light, structure in scales. Computer simulations have validated the hypothesis.
Nanotechnology to Mimic the Fireflies
Researchers from the University of Sherbrooke to the Canada have realized experience. They made a film mimicking the structure in the abdomen of the Firefly sawtooth examined. They then added this movie on a standard LED to gallium nitride. A formidable efficiency on light. This would be very interesting since it would limit energy consumption.
Upgrades pre and post-production
Korean researchers have recently discovered the nanostructures of the exoskeleton of other species of fireflies to act as a glare filter. This helps the insects to better shine in the night. The Korean team has built LEDs with lenses inspired by the nanostructures observed on animals. Still 3% light won.
This manipulation needs to be made directly to the manufacturing. On the other hand, the amendment inspired by the striations of the abdomen can be done in post-manufacturing. This makes it possible to improve existing LED lamps.
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