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Nanometric butterfly wings created
Date:10/9/2009

very limited when it comes to obtaining effective copies on a nanometric scale and they often damage the original biostructure because they are used in corrosive atmospheres or at high temperatures. The new technique "totally" overcomes these problems, as it is employed at room temperature and does not require the use of toxic substances.

Martn-Palma points out that the structures resulting from replicating the biotemplate of butterfly wings could be used to make various optically active structures, such as optical diffusers or coverings that maximise solar cell light absorption, or other types of devices. "Furthermore, the technique can be used to replicate other biological structures, such as beetle shells or the compound eyes of flies, bees and wasps," the researcher says.

The compound eyes of certain insects are sound candidates for a large number of applications as they provide great angular vision. "The development of miniature cameras and optical sensors based on these organs would make it possible for them to be installed in small spaces in cars, mobile telephones and displays, apart from having uses in areas such as medicine (the development of endoscopes) and security (surveillance)", Martn-Palma says.


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