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Butterflies' wings dazzle with science
November 04, 2004The brilliant dazzle of butterflies' wings could hold the key to a new type of optical material, called photonic crystals. Over the past 15 years, photonic crystals have attracted the attention of a vast international community, as scientists have begun to realise their potential applications in the field of optoelectronics and telecommunications.
According to Dr Luca Plattner, who undertook research in the School of Electronics and Computer Science at the University of Southampton, our understanding of the way that light is reflected from the wings of butterflies could lead to the fabrication of new photonic crystals.
Dr Plattner investigated the optical properties of a periodic nanostructure found on the wings of a tropical butterfly, Morpho rhetenor. Several decades of scientific investigation had shown that understanding the source of the butterfly's dazzling blue coloration required the use of the most advanced techniques employed in optical engineering.
Dr Plattner's study explored the remarkable properties of the nanostructures and the physical mechanisms that produce them, both experimentally through optical measurements which complemented those reported by other scientists, and theoretically via cutting-edge simulation techniques developed for photonics. This enabled him to fabricate optical structures inspired by the butterfly microstructure using silicon-based materials and processes that are common in microelectronics.
The work was carried out under the supervision of Professor Greg Parker.
'The reason for studying the structure on the wings of that particular butterfly was that it has strong similarities to the photonic crystals already fabricated in the ECS Microelectronics Research Group,' said Luca Plattner. 'I was able to explore a biomimetic process, one in which we can learn new lessons from nature which are beneficial to both engineers and entomologists.'
Dr Plattner's work will be published in the first print issue of the Royal Society's Interface magazine, due out on 22 November.
Southampton, University of
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