White beetle's reflective coating could lead to brighter paper and computer screens
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A beetle that appears the whitest shade of white to the human eye has been examined by scientists.
Researchers say that the scales on the Cyphochilus beetle can scatter light better than any other animal or plant.
They believe its reflective coating could be copied to make brighter computer screens and paints as well as whiter paper.
Researchers say that the scales on the Cyphochilus beetle (pictured) can scatter light better than any other animal or plant, making it an inspiration to scientists looking to develop new reflective materials
The beetle has developed its extraordinary whiteness to blend in with the white mushrooms common in its native South-East Asia.
Another species called Lepidiota Stigma has the same pigmentation.
Animals use a rainbow of colours for camouflage, communication, mating and to control their temperature.
Pigments in their skin absorb certain wavelengths of light and reflect others - giving them a colour.
So to appear the whitest shade of white, the beetles reflect all wavelengths of light equally.
To appear the whitest shade of white, the beetles reflect all wavelengths of light equally. They do this using a specially-adapted internal structure (pictured) to make a reflective coating
The ultra-white Cyphochilus use the geometry of a dense network of chitin - a molecule which is found everywhere from the shells of mussels to the structure of mushrooms – to reflect light. A magnified image of the Lepidiota Stigma beetle, which has the same pigmentation, is pictured
The ultra-white Cyphochilus uses the geometry of a dense network of chitin - a molecule that is found everywhere from shells to mushrooms – to do this.
Scientists at Cambridge University have shown that the beetles have optimised their internal structure to produce maximum 'white' with minimal material and effort.
Scientists likened them to a painter who needs to whiten a wall with a very small quantity of paint.
Lead researcher Dr Silvia Vignolini, of the University's Cavendish Laboratory, said: 'Current technology is not able to produce a coating as white as these beetles can in such a thin layer.
'The lessons we are learning from these beetles is two-fold.
'On one hand, we now know how to look to improve scattering strength of a given structure by varying its geometry.
'On the other hand the use of strongly scattering materials, such as the particles commonly used for white paint, is not mandatory to achieve an ultra-white coating.'
Co-author on the study, Dr Matteo Burresi, of the Italian National Institute of Optics in Florence, said: 'These scales have a structure that is truly complex since it gives rise to something that is more than the sum of its parts.'
In recent years, many engineers have been turning to nature to inspire 'new' types of structures.
Using technology perfected by the beetles, scientists hope to make paper, plastics and paints a brighter white.
They also believe that white-light reflectors inside computer and TV displays could also be made whiter and lighter, according to the study, which was published in the journal Scientific Report.
The beetle (pictured) has developed its extraordinary whiteness to blend in with the white mushrooms common in its native South-East Asia
Scientists at Cambridge University have shown that the beetles have optimised their internal structure (pictured) in order to produce maximum 'white' with minimal material and effort
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